140415 LCC Revised Mechanical Systems Analysis Report

8/21/2019 140415 LCC Revised Mechanical Systems Analysis Report

1/164

Loudoun

ounty Virginia

Department of

Transportation &

Capital

Infrastructure

Lovettsville

Community Center

Mechanical Systems

Narrative & Analysis

V.3


2/164

LOVETTSVILLECOMMUNITY

CENTERRENOVATION

LOUDONCOUNTY,VIRGINIA

MECHANICALNARRATIVE

&

ECONOMICANALYSIS

APRIL 11,2014


3/164

LOVETTSVILLE COMMUNITYCENTER LCCHVACVIRGINIA PRELIMINARYDESIGNNARRATIVE

TABLE OF CONTENTS

1. EXECUTIVE SUMMARY............................................................................................................... 1

PAGE

2.

MECHANICAL SYSTEM OPTIONS ............................................................................................ 4

2.1 Option 1aPackaged Roof top unit (DX cooling & Propane gas heating), Fan poweredVariable volume boxes with Hot water heating.

2.2

Option 2a Geothermal system, Roof top unit (heat pump), WSHP with DOAS (DedicatedOutdoor Air System).

Appendices

Appendix A

Title Page

System Checksums

Design Cooling Load Summary

System Component Selection SummaryDesign Airflow Quantities

Design Cooling Capacities

Design Heating Capacities

Engineering Checks

System Load Profiles

Building Cooling & Heating Demand

Building Temperature Profile

Building Humidity Profile

Geothermal Plant Peak Load Summary

Geothermal Plant Cumulative Load Summary

Appendix B

Economic Parameters


4/164

LOVETTSVILLE COMMUNITY CENTER LCCHVAC

VIRGINIA PRELIMINARY DESIGN NARRATIVE

1.

EXECUTIVE SUMMARY

The engineering team of Setty & Associates International analyzed five (5) different options todetermine which HVAC system was the most economical and feasible type of system to be used forthis project. The five (5) options are deemed appropriate for this project and were analyzed are asfollows:

Option 1Packaged Roof top unit (DX cooling& electric pre-heating), Fan poweredVariable volume boxes with electric heating.

Option 1aPackaged Roof top unit (DX cooling & Propane gas heating), Fan powered

Variable volume boxes with Hot water heating.

Option 2Geothermal system, Roof top unit (heat pump) & Fan powered Variable volumeboxes with electric heating


Option 3 VRF with DOAS (Dedicated Outdoor Air System), Roof top unit (DX cooling &electric pre-heating).

On March 28, 2014 the options above were reviewed with the County Design/Construction and DGSStaff to determine which HVAC system should be implemented for the LCC project. Options 1 and2 were not accepted due to utilizing total electric as a fuel source. Option 3 (VRF) was not deemedacceptable due to unfavorable past experience by the DGS staff. Two(2) options were accepted,which are option 1a and 2a. Option 1a utilizing DX cooling and propane gas for roof top unitheating and gas fired hot water boiler for the fan powered VAV box reheat. this option is consideredto be the most viable option by the DGS staff as it relates to maintenance and occupant comfort.Option 2a utilizing the constant ground temperature to store and supply heat to the building. This isthe preferred option by county engineer since this option is save more energy. Radiant heating wereadded into the discussion during the meeting. Floor radiant heating will be provided for four (4)classrooms, one (1) day care and one (1) adult room. Each room will be provided with its owncontrol


5/164



Table 2 - Life Cycle Cost Analysis Summary (Without Maintenance Cost)

Option # First CostAnnualUtility

Cost

SimplePay Back

(years)

Life CycleCost

Analysis

Option 1a - Packaged Roof top unit (DXcooling & Propane gas heating), Fanpowered Variable volume boxes with Hotwater heating.

$503,624 $20,701 N/A $581,396.22

Option 2a - Geothermal system, Roof top

unit (heat pump), WSHP with DOAS(Dedicated Outdoor Air System). $683,921 $18,074 68.6 $577,654.40

The cost estimate above is not for budgeting purposes but only for comparison between systems(refer to Appendix E for cost breakdown). The costs were based on RS Means cost estimate. All ofthe advantages and disadvantages of the various systems are presented in section 2 - mechanicalsystem options. The final approved option could be impacted by the final architectural scheme.

The building HVAC load for new building will be calculated based on ASHRAE recommendationsand good engineering practices. The HVAC system will be designed to follow the followingguidelines:

Table 3 - Design Parameters

Item#

Category Design Parameters Parameter Notes

1Winter Temperature

Summer Temperature

68.5oF to 75.5oF

74

o

F to 80

o EPA 2000 & ASHRAE 55-04

F2 Humidity

30% to 60% RelativeHumidity

EPA 2000 & ASHRAE 55-04

3Outdoor AirV til ti

10 CFM per Person + 0.12/ft2 of Area


6/164



Four possible locations for the geothermal well field (refer to page 12 for locations) were also

reviewed during the meeting. The location considered were:

1.

Area of existing playground, North-East of new building.

2.

Area to the west of new building entrance.

3.

Area for future unpaved parking, North-West of new building.

4.

Area of Existing building/new parking.

Location 3 was deemed to be the most appropriate location by Loudon County staff. This location isthe most remote and had least impact of existing site conditions. The main distribution piping to thevault will be oversized to maintain acceptable pump head loss and operating cost. If this location isaccepted, the proposed mechanical room location will be relocated to the west end of the newbuilding in the final architectural DD scheme. The location of mechanical room that house thepump(s) for the geothermal / condenser water loop in the building will be determine after location ofgeothermal field is accepted.

2.

MECHANICAL SYSTEM OPTIONS

The two (2) options are deemed appropriate for this project and were analyzed are as follows:

Option 1aPackaged Roof top unit (DX cooling & Propane gas heating), Fan poweredVariable volume boxes with Hot water heating.


Option 1a Option 2a

EFFICIENCY AND OPERATIONS SAVINGS AVERAGE HIGH


7/164



2.1

Option-1: Packaged Roof top unit (DX cooling & Propane gas heating), Fan powered Variable

volume boxes with Hot water heating

In this scheme of system four (4) packaged, Roof Top Units (RTU-1 & RTU-2 for the gymnasium,RTU-3 for the lobby/admin and RTU-4 for the classroom wing), shall be installed on the buildingroof to provide cooling, heating and appropriate ventilation air to the spaces per IMC. Supply andreturn air shall be ducted vertically down with horizontal ductwork distribution above ceiling. TheRTUS and associated components shall be sized to accommodate the cooling, heating andventilation air requirements of all the spaces served at maximum occupancy. The RTUS shall beequipped with MERV 14 filters, DX cooling coil, gas heating coil, high efficiency

compressor/condensing sections and variable frequency drive fan/motor assemblies to modulateairflow as necessary to maintain space temperature set-points.

The term packaged refers to the HVAC unit which is incorporated into the RTU such thatconditioning (cooling& heating) of air can be done depending on the seasonal change andrequirement. Refrigerant DX coil & gas heating coil are located inside the RTU for cooling & pre-heating operation within the unit.


8/164



Boilers shall be sized based on natural gas input and provide hot water to the building distributionsystems. The hot water will generally circulate in the range of 180F and a maximum Delta T on thereturn water temperature of 20 to 40F will be the design goal. Two condensing boilers wereconsidered for this school. Each of these boilers will be sized to accommodate 80% of the peakheating load.


9/164



System Advantages

Good Individual zone control.

Packaged unit utilizes refrigerant R410A which is ozone depletion free& provideLEED benefits.

Low first cost.

Low classroom noise.

System Disadvantages

Most of the units are located on the roof which will impact the roof structurally.

Risk of entire building or large areas of the building being without heating andcooling when equipment fails.

Higher energy operating costs.

Mechanical room is needed to house boiler(s) and hot water pump(s).

2.2

Option 2A: Geothermal system, Roof top unit (heat pump), WSHP with DOAS (Dedicated

Outdoor Air System)

In this scheme of system two (2) packaged, Roof Top Units (RTU-1 & RTU-2 for the gymnasium,shall be installed on the building roof to provide cooling, heating and appropriate ventilation air tothe spaces per IMC. Supply and return air shall be ducted vertically down with horizontal ductworkdistribution above ceiling. The RTUS and associated components shall be sized to accommodate thecooling, heating and ventilation air requirements of all the spaces served at maximum occupancy.The RTUS shall be equipped with MERV 14 filters, heat-pump cooling coil with reversible valvefor heating option, and variable frequency drive fan/motor assemblies to modulate airflow as

necessary to maintain space temperature set-points.

The term heat pump refers to the HVAC unit which is incorporated into the RTU such thatconditioning (cooling& heating) of air can be done depending on the seasonal change and


10/164



Water Source Heat Pump (WSHP):

Heat pumps units are good incremental units for use in classroom spaces provided; the OutsideAir requirement per International code is met by a dedicated OA system (DOAS). The highlatent loads presented by the required ventilation exceed the capacity of the heat pump unit coils.Circulated water is used as the heat sink to eliminate the need for individual condensing units aswould be required for air-cooled heat pumps. This arrangement allows for the heat source/sink tobe located in a remote location to minimize damage. The main water pipes can be run to eachheat pump present in the served space ceiling or a closet present inside the space. There areseveral manufacturers of this type of Heat pump. A typical image of this kind of unit is as shown

below.

Figure 5: Water Source Heat Pump (Indoor)

Unit heater shall be provided at the entrance areas and restrooms shall be exhausted as per IMCrequirement.

Geothermal field will require approximately 30 bore wells with a depth of 300 to 450 ft each.Vertical geothermal well layout will be used in this project as this type of installation takes lessground area when compared to horizontal type. Geo-thermal vault will be provided and installed nearthe selected field area to provide necessary condenser water for the roof top units. Below is the

d l i f h l fi ld


11/164



Dedicated Outside Air System (DOAS):

A dedicated outdoor air system (DOAS) is a type ofHVAC system that consists of two parallelsystems: a dedicated outdoor air ventilation system that handleslatent loads and a parallel system tohandlesensible loads.

Depending on the environment and the parallel system involved, the outdoor air system will handlesome of the sensible load in addition to the latent load and the parallel system will handle the rest ofthe sensible load. The main point of a DOAS system is to provide dedicated ventilation rather thanventilation as part of conditioned air. For a typical DOAS ventilation system, the outside air system

can accommodate around 0-30% of the space sensible load and thus provides enough ventilation asper international mechanical code. In order to create a comfortable indoor environment, the balanceof the space sensible loads is be accommodated by other optional equipment choices as fan coil unitsin this case. Also, a DOAS system comes with an energy wheel to make this unit more energyefficient. A typical DOAS unit is show in the image below.

System Advantages

Simultaneous heating and cooling is possible allowing credit for load movement within the

facility.

Low operating cost.

Decentralized approach allows one unit to be serviced without affecting any other zone.

Individual zone control.

Ventilation through DOAS is controlled by carbon dioxide sensor so it helps to monitor the

outside air quantity.

System Disadvantages

Highest Initial cost for installing because many types of equipment involved in this type of

system
http://en.wikipedia.org/wiki/HVAChttp://en.wikipedia.org/wiki/Latent_heathttp://en.wikipedia.org/wiki/Sensible_heathttp://en.wikipedia.org/wiki/Sensible_heathttp://en.wikipedia.org/wiki/Latent_heathttp://en.wikipedia.org/wiki/HVAC


12/164



Figure 6 shows a simple flow diagram of a ground source system. In the figure it can be seen that

water from the well field is circulated to the vault(s) and then to a series of water-to-water heatpumps. There are many configurations that water-to-water heat pumps can have to effectively heatand condition a building. In this example, the building load demands heating and coolingsimultaneously; therefore, three heat pumps are shown in heating operation and three in cooling. Theheat pumps through condensation or evaporation provide the hot or cold water to the building. Atthis point, the system operates in a similar fashion to a traditional boiler and chiller system.

Figure 6: Simple Flow Diagram of a Ground Source System

In a closed loop geothermal application, vertical wells spaced 15 to 20 feet apart are bored in the

ground on average 150 to 500 feet deep. Each well consists of a double loop of pipe with a U-bendat the bottom. The remaining open area of the drilled borehole is backfilled or grouted to encase theU-bend assembly. A typical ground loop installation can be seen in Figures 7.

VaultGeothermal

WellField

Cold Water

Hot Water

WWHP

WWHP

WWHP

WWHP

WWHP

WWHP

HP Conditioned

Air


13/164



Each vertical pipe is connected to a horizontal underground pipe that carries fluid in a closed system

to and from a well field header system that has multiple valved circuits that are brought into a vaultwhere they are connected to a manifold. The use of a vault proves to be advantageous by creatingredundancy in the system. If a problem occurs in one of the boreholes, that row can be isolatedthrough valves. This allows maintenance to take place without shutting down the entire system. Atypical vault installation can be seen in Figures 8 and 9.

Figure 8: Typical Ground Loop Vault


14/164



A typical manifold, as seen in Figure 10, includes butterfly isolation valves, combination

balancing/isolation valves and pressure/temperature ports for each circuit. With this design setup,circuit isolation, pressure testing and flow balancing can be easily performed.

Figure 10: Typical Ground Loop Manifold Piping Installation Details

Using geothermal heating and cooling is a very efficient alternative to using traditional boiler and chillercombinations. Minimal maintenance is required for a typical ground source system as well as a reducedd d h i l i M i i ll i l d i i d l k


15/164

LOVETTSVILLECOMMUNITYCENTER LCCHVAC

VIRGINIA PRELIMINARYDESIGNNARRATIVE

Proposed Geothermal field location


16/164



APPENDIX A


17/164

SETTY

LOUDON COUNTY, VA

LOVETTSVILLE COMMUNITY CENTER

SETTY

Comments

Company

Program user

Building owner

Location


Washington, D.C.Location

Latitude

Longitude

38.0 deg

77.05

deg

14

29.9

t

in. Hg

Time Zone

Elevation

Barometric pressure

Air density

Air specific heat

Density-specific heat product

Latent heat factor

Enthalpy factor

lb/cu ft0.0760

0.2444

1.1147

4,906.9

4.5604

Btu/lbF

Btu/hcfmF

Btumin/hcu ft

lbmin/hrcu ft

Summer design dry bulb

Summer design wet bulb

Winter design dry bulb

Summer clearness number

Winter clearness number

Summer ground reflectance

Winter ground reflectance

95

78

10

F

F

F

0.85

0.85

0.20

0.20

TETD-TA1

UATD

Design simulation period

Cooling load methodology

Heating load methodology

January - December

By Setty

W:\2014\SAP14728.01\SAP14728.01M\LOADS\LATEST\LCC

.TRC

Dataset name

05:01 PM on 04/10/2014Calculation time

TRACE 700 version

400Carbon Dioxide Level ppm

6.3


18/164

System ChecksumsBy Setty

Single ZoneRTU-1

HEATING COIL PEAKCLG SPACE PEAKCOOLING COIL PEAK TEMPERATURES

Heating DesignMo/Hr:Sum ofMo/Hr:7 / 17Mo/Hr:Peaked at Time: Cooling Heat ing

SADBOADB: 10OADB:93 / 77 / 114OADB/WB/HR:Outside Air: 57.0 95.0

Ra Plenum 76.3 68.8

ReturnPercentCoil PeakSpace PeakSpace PercentPercentNetPlenumSpace 76.8 68.8

Ret/OASens. + Lat. Of TotalTot SensSpace SensOf TotalSensibleOf TotalTotalSens. + Lat 54.777.7 0.00.2Fn MtrTDBtu/h (%)Btu/hBtu/h(%)Btu/h(%)Btu/hBtu/h0.00.4Fn BldTDEnvelope Loads0.01.1Fn Frict0Skylite Solar 0.000000000

0Skylite Cond 0.000000000

0Roof Cond 2.67-6,30400035,1825,182

0.0044,424Glass Solar 004345,7072844,4240

8,259Glass/Door Cond -27,477 11.66-27,47777,63858,2590AIRFLOWS

HeatingCooling4,694Wall Cond 3.11-7,332-6,04455,00845,686993

0Partition/Door 0.00000000

0Floor 0.0000000

Sec Fan0.000Infiltration 000000

0 0MinStop/Rh

17.4457,377Sub Total ==> -41,112-33,5205558,3544063,5516,174

5,251Return 5,251

Internal Loads

1,2601,260Exhaust

8,601Lights 0.000088,601710,7512,150

0 0Rm Exh

49,500People 0.0003233,75031

00Auxiliary

3,840Misc 0.000043,84023,8400

61,940Sub Total ==> 0.00004446,1904064,0912,150

904Ceiling Load 0.000-824181300-904

0Ventilation Load 35.75-84,2740001423,2160

Sup. Fan Heat 69,335

ENGINEERING CKS

HeatingCooling

Ret. Fan Heat 23,1123,112 % OA 24.024.0

Duct Heat Pkup 000 2.332.33cfm/ft

0Ov/Undr Sizing

47.50-111,985-111,985

0000

391.90cfm/ton

Exhaust Heat

-0.691,624

-2-2,527

167.94ft/ton

-104.7871.46Btu/hrft

150No. People120,221Grand Total ==> 100.00-235,747-146,329100.00105,357100.00160,7768,005

AREAS HEATING COIL SELECTIONCOOLING COIL SELECTIONTotal Capacity Sens Cap. Coil Airflow Enter DB/WB/HR Leave DB/WB/HR Gross Total Glass Coil Airflow Ent LvgCapacity

ton MBh MBh cfm F F gr/lb F F gr/lb ft (%) FFcfmMBh

Floor 2,250 Main Htg -235.8 5,251 54.7 95.013.4 160.8 129.8 5,251 77.7 64.2 68.4 55.4 54.1 60.3Main Clg

Part 0 Aux Htg 0.0 0.00.000.0 0.0 0.0 0 0.0 0.0 0.0 0.0 0.0 0.0Aux Clg

ExFlr 0

-4.0Preheat 54.7 55.45,2510.0 0.0 0.0 0 0.0 0.0 0.0 0.0 0.0 0.0Opt Vent

Roof 2,250 0 0

Wall 2,712 814 30Humidif 0.0 0 0.0 0.013.4 160.8Total

Opt Vent 0.0 0.00.00

-235.8Total

Envelope LoadsSkylite Solar

Skylite Cond

Roof Cond

Glass Solar

Glass/Door Cond

Wall Cond

Partition/Door

Floor

Infiltration

Sub Total ==>

LightsPeople

Misc

Sub Total ==>

Ceiling Load

Ventilation Load

Additional Reheat

OA Preheat Diff.

Ov/Undr Sizing

Exhaust Heat

RA Preheat Diff.

Grand Total ==>

Internal Loads

0

0

0

0.00

0.00

0.00

-2,527

Supply Air Leakage

Peaks

Dehumid. Ov Sizing 0 0

Adj Air Trans Heat 0 0 0 0 0 Adj Air Trans Heat 0 0 0Leakage Ups

Leakage Dwn

00Infil

AHU Vent

Nom Vent

Main FanTerminal

Adjacent Floor

Diffuser

Supply Air Leakage

Underflr Sup Ht Pkup Underflr Sup Ht Pkup

Adjacent Floor0 0 0 0

0 0

0 0 0

0

0

0 0 0 0

0 0.00

0 0.00

5,251

5,2515,251

0

1,260

1,260

0

0

5,251

5,2515,251

0

1,260

1,260

0

0

0 49,500 0

Int Door 0

Ext Door 0 0 0

TRACE 700 v6.3 calculated at 05:01 PM on 04/10/2014Project Name: LOVETTSVILLE COMMUNITY CENTER

Dataset Name: Alternative - 1 System Checksums Report Page 1 of 7LCC.TRC


19/164


Single ZoneRTU-2




Ra Plenum 76.3 68.6


Ret/OASens. + Lat. Of TotalTot SensSpace SensOf TotalSensibleOf TotalTotalSens. + Lat 49.578.0 0.00.2Fn MtrTDBtu/h (%)Btu/hBtu/h(%)Btu/h(%)Btu/hBtu/h0.00.4Fn BldTDEnvelope Loads0.01.1Fn Frict0Skylite Solar 0.000000000


0Roof Cond 3.21-6,28000033,9813,981

0.0023,644Glass Solar 003224,9811923,6440




0Floor 0.0000000


0 0MinStop/Rh

11.1429,286Sub Total ==> -21,821-14,9163930,3332733,7544,467

3,860Return 3,860

Internal Loads

1,2601,260Exhaust

8,601Lights 0.0000118,601910,7512,150

0 0Rm Exh

49,500People 0.0004433,75040

00Auxiliary

3,840Misc 0.000053,84033,8400

61,940Sub Total ==> 0.00006046,1905164,0912,150

941Ceiling Load 0.000-981192700-941



ENGINEERING CKS

HeatingCooling

Ret. Fan Heat 22,2872,287 % OA 32.632.6


0Ov/Undr Sizing

46.81-91,673-91,673

0000

370.82cfm/ton

Exhaust Heat

-0.991,934

-2-2,600

216.15ft/ton

-87.0455.52Btu/hrft






ExFlr 0

-25.5Preheat 49.5 55.43,8600.0 0.0 0.0 0 0.0 0.0 0.0 0.0 0.0 0.0Opt Vent

Roof 2,250 0 0


Opt Vent 0.0 0.00.00

-195.8Total


Skylite Cond

Roof Cond

Glass Solar

Glass/Door Cond

Wall Cond

Partition/Door

Floor

Infiltration

Sub Total ==>

LightsPeople

Misc

Sub Total ==>

Ceiling Load

Ventilation Load

Additional Reheat

OA Preheat Diff.

Ov/Undr Sizing

Exhaust Heat

RA Preheat Diff.

Grand Total ==>

Internal Loads

0

0

0

0.00

0.00

0.00

-2,600

Supply Air Leakage

Peaks



Leakage Dwn

00Infil

AHU Vent

Nom Vent

Main FanTerminal

Adjacent Floor

Diffuser

Supply Air Leakage



0 0

0 0 0

0

0

0 0 0 0

0 0.00

0 0.00

3,860

3,8603,860

0

1,260

1,260

0

0

3,860

3,8603,860

0

1,260

1,260

0

0

0 49,500 0

Int Door 0

Ext Door 0 0 0




20/164


Parallel Fan-Powered VAV, Htg Coil on Plenum InletRTU-3


Heating DesignMo/Hr:7 / 17Mo/Hr:7 / 17Mo/Hr:Peaked at Time: Cooling Heat ing


Ra Plenum 77.1 67.7


Ret/OASens. + Lat.

Of TotalTot SensSpace SensOf TotalSensibleOf TotalTotalSens. + Lat

15.778.5 0.00.2Fn MtrTDBtu/h (%)Btu/hBtu/h(%)Btu/h(%)Btu/hBtu/h0.10.4Fn BldTDEnvelope Loads0.21.3Fn Frict0Skylite Solar 0.000000000


0Roof Cond 7.69-11,18200069,0519,051

0.0031,201Glass Solar 003431,2012031,2010


HeatingCooling3,757Wall Cond 5.15-7,479-5,75243,75734,8681,111


0Floor 0.0000000


1,623 1,623MinStop/Rh

32.2443,406Sub Total ==> -46,853-33,9444743,4063453,56910,162

4,598Return 1,623

Internal Loads

1,4621,507Exhaust

13,849Lights 0.00001513,8491117,3113,462

0 0Rm Exh

47,700People 0.0002926,50031

00Auxiliary

5,756Misc 0.000065,75645,7560

67,305Sub Total ==> 0.00005046,1054570,7673,462

2,741Ceiling Load 0.000-3,01932,74100-2,741



ENGINEERING CKS

HeatingCooling

Ret. Fan Heat 000 % OA 38.532.8


0Ov/Undr Sizing

0.0000

0000

353.38cfm/ton

Exhaust Heat

-2.623,812

-2-3,567

313.06ft/ton

-34.8538.33Btu/hrft






ExFlr 0

-75.8Preheat 10.0 55.11,5070.0 0.0 0.0 0 0.0 0.0 0.0 0.0 0.0 0.0Opt Vent

Roof 4,073 0 0


Opt Vent 0.0 0.00.00

-142.0Total


Skylite Cond

Roof Cond

Glass Solar

Glass/Door Cond

Wall Cond

Partition/Door

Floor

Infiltration

Sub Total ==>

LightsPeople

Misc

Sub Total ==>

Ceiling Load

Ventilation Load

Additional Reheat

OA Preheat Diff.

Ov/Undr Sizing

Exhaust Heat

RA Preheat Diff.

Grand Total ==>

Internal Loads

0

-2,257

-2,244

1.55

1.54

0.00

-3,567

Supply Air Leakage

93



Leakage Dwn

00Infil

AHU Vent

Nom Vent

Main FanTerminal

Adjacent Floor

Diffuser

Supply Air Leakage



0 0

0 0 0

0

0

0 0 0 0

0 0.00

0 0.00

4,598

4,5984,598

0

1,507

1,507

0

0

3,793

3,7931,623

2,170

1,462

1,462

0

0

0 47,700 0

Int Door 0

Ext Door 0 0 0




21/164


Parallel Fan-Powered VAV, Htg Coil on Plenum InletRTU-4


Heating DesignMo/Hr:9 / 11Mo/Hr:7 / 11Mo/Hr:Peaked at Time: Cooling Heat ing


Ra Plenum 76.4 68.0


Ret/OASens. + Lat.

Of TotalTot SensSpace SensOf TotalSensibleOf TotalTotalSens. + Lat

42.078.6 0.00.1Fn MtrTDBtu/h (%)Btu/hBtu/h(%)Btu/h(%)Btu/hBtu/h0.10.3Fn BldTDEnvelope Loads0.20.9Fn Frict0Skylite Solar 0.000000000


1,841Roof Cond 8.42-5,287-2,60021,13043,7381,898

0.0028,524Glass Solar 005935,7252928,5240

2,931Glass/Door Cond -15,186 24.17-15,186172832,9310AIRFLOWS



0Floor 0.0000000


950 950MinStop/Rh

39.7735,934Sub Total ==> -24,984-21,7276539,7643938,3802,446

3,039Return 950

Internal Loads

432475Exhaust

6,132Lights 0.0000106,13287,6651,533

0 0Rm Exh

15,600People 0.000148,57516

00Auxiliary

6,212Misc 0.0000106,21266,2120

27,943Sub Total ==> 0.00003420,9183029,4761,533

433Ceiling Load 0.000-633028700-433



ENGINEERING CKS

HeatingCooling

Ret. Fan Heat 000 % OA 19.215.6


0Ov/Undr Sizing

0.0000

0000

374.68cfm/ton

Exhaust Heat

-1.28806

-1-857

232.31ft/ton

-33.0051.65Btu/hrft






ExFlr 0

-24.2Preheat 10.0 55.74750.0 0.0 0.0 0 0.0 0.0 0.0 0.0 0.0 0.0Opt Vent

Roof 1,884 0 0


Opt Vent 0.0 0.00.00

-62.2Total


Skylite Cond

Roof Cond

Glass Solar

Glass/Door Cond

Wall Cond

Partition/Door

Floor

Infiltration

Sub Total ==>

LightsPeople

Misc

Sub Total ==>

Ceiling Load

Ventilation Load

Additional Reheat

OA Preheat Diff.

Ov/Undr Sizing

Exhaust Heat

RA Preheat Diff.

Grand Total ==>

Internal Loads

0

-2,162

-7,566

3.44

12.04

0.00

-857

Supply Air Leakage

80



Leakage Dwn

00Infil

AHU Vent

Nom Vent

Main FanTerminal

Adjacent Floor

Diffuser

Supply Air Leakage



0 0

0 0 0

0

0

0 0 0 0

0 0.00

0 0.00

3,039

3,0393,039

0

475

475

0

0

2,246

2,246950

1,296

432

432

0

0

0 15,600 0

Int Door 0

Ext Door 0 0 0




22/164


Water Source Heat PumpRTU-1




Ra Plenum 76.3 68.8


Ret/OASens. + Lat.

Of TotalTot SensSpace SensOf TotalSensibleOf TotalTotalSens. + Lat 54.677.4

0.00.2Fn MtrTDBtu/h (%)Btu/hBtu/h(%)Btu/h(%)Btu/hBtu/h0.00.4Fn BldTDEnvelope Loads0.01.1Fn Frict0Skylite Solar 0.000000000


0Roof Cond 2.69-6,30300035,1815,181

0.0044,371Glass Solar 004445,6552944,3710




0Floor 0.0000000


0 0MinStop/Rh

16.4356,588Sub Total ==> -38,561-30,9695557,6214162,7616,173

5,214Return 5,214

Internal Loads

1,2601,260Exhaust

8,601Lights 0.000088,601710,7512,150

0 0Rm Exh

49,500People 0.0003233,75032

00Auxiliary

3,840Misc 0.000043,84023,8400

61,940Sub Total ==> 0.00004446,1904164,0912,150

909Ceiling Load 0.000-829181800-909



ENGINEERING CKS

HeatingCooling

Ret. Fan Heat 000 % OA 24.224.2


0Ov/Undr Sizing

48.36-113,520-113,520

0000

404.31cfm/ton

Exhaust Heat

-0.701,634

-1-1,792

174.46ft/ton

-104.3268.79Btu/hrft






ExFlr 0

-4.6Preheat 54.6 55.45,2140.0 0.0 0.0 0 0.0 0.0 0.0 0.0 0.0 0.0Opt Vent

Roof 2,250 0 0


Opt Vent 0.0 0.00.00

-234.7Total


Skylite Cond

Roof Cond

Glass Solar

Glass/Door Cond

Wall Cond

Partition/Door

Floor

Infiltration

Sub Total ==>

LightsPeople

Misc

Sub Total ==>

Ceiling Load

Ventilation Load

Additional Reheat

OA Preheat Diff.

Ov/Undr Sizing

Exhaust Heat

RA Preheat Diff.

Grand Total ==>

Internal Loads

0

0

0

0.00

0.00

0.00

-1,792

Supply Air Leakage

Peaks



Leakage Dwn

00Infil

AHU Vent

Nom Vent

Main FanTerminal

Adjacent Floor

Diffuser

Supply Air Leakage



0 0

0 0 0

0

0

0 0 0 0

0 0.00

0 0.00

5,214

5,2145,214

0

1,260

1,260

0

0

5,214

5,2145,214

0

1,260

1,260

0

0

0 49,500 0

Int Door 0

Ext Door 0 0 0




23/164


Water Source Heat PumpRTU-2




Ra Plenum 76.3 68.6


Ret/OASens. + Lat.Of TotalTot SensSpace SensOf TotalSensibleOf TotalTotal

Sens. + Lat 49.477.6



0Roof Cond 3.21-6,28000033,9813,981

0.0023,618Glass Solar 003224,9542023,6180




0Floor 0.0000000


0 0MinStop/Rh

10.6028,976Sub Total ==> -20,726-13,8213930,0502833,4434,467

3,846Return 3,846

Internal Loads

1,2601,260Exhaust

8,601Lights 0.0000118,601910,7512,150

0 0Rm Exh

49,500People 0.0004433,75041

00Auxiliary

3,840Misc 0.000053,84033,8400

61,940Sub Total ==> 0.00006046,1905364,0912,150

943Ceiling Load 0.000-984193000-943



ENGINEERING CKS

HeatingCooling

Ret. Fan Heat 000 % OA 32.832.8


0Ov/Undr Sizing

47.27-92,375-92,375

0000

383.98cfm/ton

Exhaust Heat

-0.991,939

-2-1,859

224.64ft/ton

-86.8653.42Btu/hrft






ExFlr 0

-25.7Preheat 49.4 55.43,8460.0 0.0 0.0 0 0.0 0.0 0.0 0.0 0.0 0.0Opt Vent

Roof 2,250 0 0


Opt Vent 0.0 0.00.00

-195.4Total


Skylite Cond

Roof Cond

Glass Solar

Glass/Door Cond

Wall Cond

Partition/Door

Floor

Infiltration

Sub Total ==>

LightsPeople

Misc

Sub Total ==>

Ceiling Load

Ventilation Load

Additional Reheat

OA Preheat Diff.

Ov/Undr Sizing

Exhaust Heat

RA Preheat Diff.

Grand Total ==>

Internal Loads

0

0

0

0.00

0.00

0.00

-1,859

Supply Air Leakage

Peaks



Leakage Dwn

00Infil

AHU Vent

Nom Vent

Main FanTerminal

Adjacent Floor

Diffuser

Supply Air Leakage



0 0

0 0 0

0

0

0 0 0 0

0 0.00

0 0.00

3,846

3,8463,846

0

1,260

1,260

0

0

3,846

3,8463,846

0

1,260

1,260

0

0

0 49,500 0

Int Door 0

Ext Door 0 0 0




24/164


Water Source Heat PumpWSHP - 1




Ra Plenum 76.3 68.5


Ret/OASens. + Lat.Of TotalTot SensSpace SensOf TotalSensibleOf TotalTotal

Sens. + Lat 68.776.2



2,310Roof Cond 7.10-16,663-2,60012,310511,6409,330

0.0072,424Glass Solar 004876,8273472,4240


HeatingCooling5,740Wall Cond 4.61-10,816-8,61945,86337,2271,487


0Floor 0.0000000


0 0MinStop/Rh

26.8887,755Sub Total ==> -63,059-46,7985791,1694698,57110,816

10,012Return 10,012

Internal Loads

1,9821,982Exhaust

19,981Lights 0.00001219,9811224,9764,995

0 0Rm Exh

63,300People 0.0002235,07530

00Auxiliary

11,968Misc 0.0000711,968611,9680

95,248Sub Total ==> 0.00004267,02347100,2444,995

2,058Ceiling Load 0.000-2,35611,84100-2,058

13,427Ventilation Load 56.50-132,535-132,53500613,4270


ENGINEERING CKS

HeatingCooling

Ret. Fan Heat 000 % OA 24.724.7


1,099Ov/Undr Sizing

17.95-42,106-42,106

11,09911,099

423.50cfm/ton

Exhaust Heat

-1.333,123

-1-2,755

314.15ft/ton

-39.5238.20Btu/hrft






ExFlr 0

0.0Preheat 0.0 0.001.2 14.6 14.5 1,982 81.6 67.8 80.2 75.0 65.7 80.2Opt Vent

Roof 5,957 0 0

Wall 3,982 1,176 30Humidif 0.0 0 0.0 0.019.0 227.6Total

Opt Vent 0.0 0.00.00

-235.4Total


Skylite Cond

Roof Cond

Glass Solar

Glass/Door Cond

Wall Cond

Partition/Door

Floor

Infiltration

Sub Total ==>

LightsPeople

Misc

Sub Total ==>

Ceiling Load

Ventilation Load

Additional Reheat

OA Preheat Diff.

Ov/Undr Sizing

Exhaust Heat

RA Preheat Diff.

Grand Total ==>

Internal Loads

0

0

0

0.00

0.00

0.00

-2,755

Supply Air Leakage

Peaks



Leakage Dwn

00Infil

AHU Vent

Nom Vent

Main FanTerminal

Adjacent Floor

Diffuser

Supply Air Leakage



0 0

0 0 0

0

0

0 0 0 0

0 0.00

0 0.00

8,030

8,0308,030

0

1,982

1,982

0

0

8,030

8,0308,030

0

1,982

1,982

0

0

0 63,300 0

Int Door 0

Ext Door 0 0 0




25/164


By Setty


LOUDON COUNTY, VA

Solar Gain

Glass TransmissionWall Transmission

Roof Transmission

Floor Transmission

Partition Transmission

Net Ceiling Load

Lighting

People

Misc. Equipment Loads

Cooling Infiltration

Sub-Total ==>

Ventilation Load

Supply Fan Load

Return Fan Load

Net Duct Heat Pickup

Wall Load to Plenum

Roof Load to Plenum

Lighting Load to Plenum

Misc. Equip. Load to Plenum

Glass Transmission to Plenum

Glass Solar to Plenum

Over/Under Sizing

Total Cooling Loads

44,424

8,2594,694

0

0

0

0

8,601

33,750 15,750

3,840 0

0 0

8,001 15,215

9,335

3,112

0

993

5,182

2,150

0 0

0

0

0

0 0

0

Reheat at Design

44,424

8,2594,694

0

0

0

0

8,601

9,335

3,112

993

5,182

2,150

0

0

0

23,216

49,500

3,840

0

0

0

103,567 15,750 119,317

129,811 30,965 160,776

27.6%

5.1%2.9%

0.0%

0.0%

0.0%

0.0%

5.3%

30.8%

2.4%

0.0%

74.2%

14.4%

5.8%

1.9%

0.0%

0.6%

3.2%

1.3%

0.0%

0.0%

0.0%

0.0%

0.0%

100.0 %

Load Component Sensible Latent TotalBtu/h Btu/h Btu/h

Percent

of Total

Coil Selection Parameters

Coil Entering Air (DB / WB)

Coil Entering Humidity RatioCoil Leaving Air (DB / WB)

Coil Leaving Humidity Ratio

Coil Sensible Load

Coil Total Load

Cooling Supply Air Temperature

Total Cooling Airflow

Resulting Room Relative Humidity

General Engineering Checks

Total Cooling Load

Area / Load

Total Floor AreaCooling Airflow

Airflow / Load

Percent Outdoor Air

Cooling Load Methodology

77.7 / 64.2

55.4 / 54.168.37

60.26

129.81

160.78

57.00

5,250.74

47.75

13.4

167.94

2,2502.33

391.90

24.0

TETD-TA1

cfm/ft

ton

ft/ton

ft

cfm/ton

%

F

gr/lbF

gr/lb

MBh

MBh

cfm

F

%

COOLING COIL SELECTIONCOOLING COIL LOAD INFORMATION

Zone - Zone - 001

System - RTU-1

Coil Location - Zone

Ambient DB/WB/HR: 93 / 77 / 114

Coil Peak Calculation Time: July, hour 17

-2,527 0 -2,527 -1.6%Exhaust Heat

Adj Floor Transmission 0 0.00

Adj Floor to Plenum 0 0

Underfloor Sup Heat Pickup

Supply Air Leakage

0 0

0 0

0.0%

0.0%

0

0.0%

0.0%


Dataset Name: Alternative - 1 Design Cooling Load Report Page 1 of 19LCC.TRC


26/164


By Setty


LOUDON COUNTY, VA

Solar Gain


Roof Transmission

Floor Transmission


Net Ceiling Load

Lighting

People

Misc. E ui ment Loads


Sub-Total ==>

Ventilation Load

Supply Fan Load

Return Fan LoadNet Duct Heat Pickup

Wall Load to Plenum

Roof Load to Plenum





Over/Under Sizing

Total Cooling Loads

23,644

3,1992,443

0

0

0

0

8,601

33,750 15,750

3,840 0

0 0

7,397 13,121

6,862

2,2870

486

3,981

2,150

0 0

0

0

0

0 0

0

Reheat at Design

23,644

3,1992,443

0

0

0

0

8,601

6,862

2,287

486

3,981

2,150

0

0

0

20,518

49,500

3,840

0

0

0

75,477 15,750 91,227

96,041 28,871 124,912

18.9%

2.6%2.0%

0.0%

0.0%

0.0%

0.0%

6.9%

39.6%

3.1%

0.0%

73.0%

16.4%

5.5%

1.8%0.0%0.4%

3.2%

1.7%

0.0%0.0%

0.0%

0.0%

0.0%

100.0 %

Load Component Sensible Latent Total

Btu/h Btu/h Btu/hPercent

of Total





Coil Sensible Load

Coil Total Load





Total Cooling Load

Area / Load

Total Floor Area

Cooling AirflowAirflow / Load

Percent Outdoor Air


78.0 / 64.5

55.4 / 53.869.42

59.21

96.04

124.91

57.00

3,859.95

49.11

10.4

216.15

2,250

1.72370.82

32.6

TETD-TA1

cfm/ft

ton

ft/ton

ft

cfm/ton

%

F

gr/lbF

gr/lb

MBh

MBh

cfm

F

%


Zone - Zone - 002

System - RTU-2

Coil Location - Zone



-2,600 0 -2,600 -2.1%Exhaust Heat




Supply Air Leakage

0 0

0 0

0.0%

0.0%

0

0.0%

0.0%




27/164


By Setty


LOUDON COUNTY, VA

Solar Gain


Roof Transmission

Floor Transmission


Net Ceiling Load

Lighting

People



Sub-Total ==>

Ventilation Load

Supply Fan Load


Wall Load to Plenum

Roof Load to Plenum





Over/Under Sizing

Total Cooling Loads

31,201

8,4483,757

0

0

0

0

13,849

26,500 21,200

5,756 0

0 0

10,631 15,190

9,536

00

1,111

9,051

3,462

0 0

0

0

0

0 0

0

Reheat at Design

31,201

8,4483,757

0

0

0

0

13,849

9,536

0

1,111

9,051

3,462

0

0

0

25,821

47,700

5,756

0

0

0

89,511 21,200 110,711

119,736 36,390 156,126

20.0%

5.4%2.4%

0.0%

0.0%

0.0%

0.0%

8.9%

30.6%

3.7%

0.0%

70.9%

16.5%

6.1%

0.0%0.0%0.7%

5.8%

2.2%

0.0%0.0%

0.0%

0.0%

0.0%

100.0 %



of Total





Coil Sensible Load

Coil Total Load





Total Cooling Load

Area / Load

Total Floor Area


Percent Outdoor Air


78.5 / 64.7

55.1 / 53.569.62

58.43

119.74

156.13

57.00

4,597.60

49.91

13.0

313.06

4,073

1.13353.38

32.8

TETD-TA1

cfm/ft

ton

ft/ton

ft

cfm/ton

%

F

gr/lbF

gr/lb

MBh

MBh

cfm

F

%


Type - Parallel Fan-Powered VAV, Htg Coil on Plenum Inlet

System - RTU-3

Coil Location - System



-3,567 0 -3,567 -2.3%Exhaust Heat




Supply Air Leakage

0 0

0 0

0.0%

0.0%

0

0.0%

0.0%




28/164


By Setty


LOUDON COUNTY, VA

Solar Gain


Roof Transmission

Floor Transmission


Net Ceiling Load

Lighting

People



Sub-Total ==>

Ventilation Load

Supply Fan Load


Wall Load to Plenum

Roof Load to Plenum





Over/Under Sizing

Total Cooling Loads

28,524

2,9312,639

1,841

0

0

0

6,132

8,575 7,025

6,212 0

0 0

7,193 18,894

4,230

00

549

1,898

1,533

0 0

0

0

0

0 0

0

Reheat at Design

28,524

2,9312,639

1,841

0

0

0

6,132

4,230

0

549

1,898

1,533

0

0

0

26,087

15,600

6,212

0

0

0

56,852 7,025 63,877

71,398 25,919 97,317

29.3%

3.0%2.7%

1.9%

0.0%

0.0%

0.0%

6.3%

16.0%

6.4%

0.0%

65.6%

26.8%

4.3%

0.0%0.0%0.6%

1.9%

1.6%

0.0%0.0%

0.0%

0.0%

0.0%

100.0 %



of Total





Coil Sensible Load

Coil Total Load





Total Cooling Load

Area / Load

Total Floor Area


Percent Outdoor Air


78.6 / 65.0

55.7 / 53.770.58

58.55

71.40

97.32

57.00

2,854.97

47.11

8.1

232.31

1,884

1.61374.68

15.6

TETD-TA1

cfm/ft

ton

ft/ton

ft

cfm/ton

%

F

gr/lbF

gr/lb

MBh

MBh

cfm

F

%


Type - Parallel Fan-Powered VAV, Htg Coil on Plenum Inlet

System - RTU-4

Coil Location - System



-857 0 -857 -0.9%Exhaust Heat




Supply Air Leakage

0 0

0 0

0.0%

0.0%

0

0.0%

0.0%




29/164


By Setty


LOUDON COUNTY, VA

Solar Gain


Roof Transmission

Floor Transmission


Net Ceiling Load

Lighting

People

Misc. Equipment Loads


Sub-Total ==>

Ventilation Load

Supply Fan Load

Return Fan Load

Net Duct Heat Pickup

Wall Load to Plenum

Roof Load to Plenum





Over/Under Sizing

Total Cooling Loads

44,371

7,5244,694

0

0

0

0

8,601

33,750 15,750

3,840 0

0 0

8,009 12,428

9,270

0

0

992

5,181

2,150

0 0

0

0

0

0 0

0

Reheat at Design

44,371

7,5244,694

0

0

0

0

8,601

9,270

0

992

5,181

2,150

0

0

0

20,437

49,500

3,840

0

0

0

102,778 15,750 118,528

126,589 28,178 154,767

28.7%

4.9%3.0%

0.0%

0.0%

0.0%

0.0%

5.6%

32.0%

2.5%

0.0%

76.6%

13.2%

6.0%

0.0%

0.0%

0.6%

3.3%

1.4%

0.0%

0.0%

0.0%

0.0%

0.0%

100.0 %

Load Component Sensible Latent TotalBtu/h Btu/h Btu/h

Percent

of Total





Coil Sensible Load

Coil Total Load





Total Cooling Load

Area / Load

Total Floor Area

Cooling Airflow

Airflow / Load

Percent Outdoor Air


78.9 / 64.6

57.0 / 54.968.39

61.00

126.59

154.77

57.00

5,214.48

50.14

12.9

174.46

2,250

2.32

404.31

24.2

TETD-TA1

cfm/ft

ton

ft/ton

ft

cfm/ton

%

F

gr/lbF

gr/lb

MBh

MBh

cfm

F

%


Room - Gym-1

Zone - Zone - 001

System - RTU-1

Coil Location - Room



-1,792 0 -1,792 -1.2%Exhaust Heat




Supply Air Leakage

0 0

0 0

0.0%

0.0%

0

0.0%

0.0%




30/164


By Setty


LOUDON COUNTY, VA

Solar Gain


Roof Transmission

Floor Transmission


Net Ceiling Load

Lighting

People



Sub-Total ==>

Ventilation Load

Supply Fan Load


Wall Load to Plenum

Roof Load to Plenum





Over/Under Sizing

Total Cooling Loads

23,618

2,9152,443

0

0

0

0

8,601

33,750 15,750

3,840 0

0 0

7,401 10,278

6,837

00

486

3,981

2,150

0 0

0

0

0

0 0

0

Reheat at Design

23,618

2,9152,443

0

0

0

0

8,601

6,837

0

486

3,981

2,150

0

0

0

17,679

49,500

3,840

0

0

0

75,166 15,750 90,916

94,163 26,028 120,191

19.7%

2.4%2.0%

0.0%

0.0%

0.0%

0.0%

7.2%

41.2%

3.2%

0.0%

75.6%

14.7%

5.7%

0.0%0.0%0.4%

3.3%

1.8%

0.0%0.0%

0.0%

0.0%

0.0%

100.0 %



of Total





Coil Sensible Load

Coil Total Load





Total Cooling Load

Area / Load

Total Floor Area


Percent Outdoor Air


79.2 / 64.9

57.0 / 54.769.43

60.25

94.16

120.19

57.00

3,845.97

51.55

10.0

224.64

2,250

1.71383.98

32.8

TETD-TA1

cfm/ft

ton

ft/ton

ft

cfm/ton

%

F

gr/lbF

gr/lb

MBh

MBh

cfm

F

%


Room - Gym-2

Zone - Zone - 002

System - RTU-2




-1,859 0 -1,859 -1.5%Exhaust Heat




Supply Air Leakage

0 0

0 0

0.0%

0.0%

0

0.0%

0.0%




31/164


By Setty


LOUDON COUNTY, VA

Solar Gain


Roof Transmission

Floor Transmission


Net Ceiling Load

Lighting

People



Sub-Total ==>

Ventilation Load

Supply Fan Load


Wall Load to Plenum

Roof Load to Plenum





Over/Under Sizing

Total Cooling Loads

7,166

1,748868

0

0

0

0

2,683

5,500 4,400

1,198 0

0 0

0 1,935

301

00

262

1,329

671

0 0

0

738

0

0 0

0

Reheat at Design

7,166

1,748868

0

0

0

0

2,683

301

0

262

1,329

671

0

0

738

1,935

9,900

1,198

0

0

0

19,163 4,400 23,563

22,024 6,335 28,359

25.3%

6.2%3.1%

0.0%

0.0%

0.0%

0.0%

9.5%

34.9%

4.2%

0.0%

83.1%

6.8%

1.1%

0.0%0.0%0.9%

4.7%

2.4%

0.0%0.0%

0.0%

2.6%

0.0%

100.0 %



of Total





Coil Sensible Load

Coil Total Load





Total Cooling Load

Area / Load

Total Floor Area


Percent Outdoor Air


76.6 / 63.1

57.0 / 53.764.95

56.33

22.02

28.36

57.00

1,017.18

53.49

2.6

275.05

702

1.45398.54

29.9

TETD-TA1

cfm/ft

ton

ft/ton

ft

cfm/ton

%

F

gr/lbF

gr/lb

MBh

MBh

cfm

F

%


Room - Pre-School Room #1

Zone - Zone - 003

System - WSHP - 1




-440 0 -440 -1.6%Exhaust Heat




Supply Air Leakage

0 0

0 0

0.0%

0.0%

0

0.0%

0.0%




32/164


By Setty


LOUDON COUNTY, VA

Solar Gain


Roof Transmission

Floor Transmission


Net Ceiling Load

Lighting

People



Sub-Total ==>

Ventilation Load

Supply Fan Load


Wall Load to Plenum

Roof Load to Plenum





Over/Under Sizing

Total Cooling Loads

12,319

1,8901,152

0

0

0

0

2,683

5,500 4,400

1,198 0

0 0

0 2,149

374

00

349

1,609

671

0 0

0

1

0

0 0

0

Reheat at Design

12,319

1,8901,152

0

0

0

0

2,683

374

0

349

1,609

671

0

0

1

2,149

9,900

1,198

0

0

0

24,743 4,400 29,143

27,241 6,549 33,790

36.5%

5.6%3.4%

0.0%

0.0%

0.0%

0.0%

7.9%

29.3%

3.5%

0.0%

86.2%

6.4%

1.1%

0.0%0.0%1.0%

4.8%

2.0%

0.0%0.0%

0.0%

0.0%

0.0%

100.0 %



of Total





Coil Sensible Load

Coil Total Load





Total Cooling Load

Area / Load

Total Floor Area


Percent Outdoor Air


76.8 / 63.2

57.0 / 54.264.95

58.16

27.24

33.79

57.00

1,260.53

53.17

3.0

233.63

702

1.80419.51

24.1

TETD-TA1

cfm/ft

ton

ft/ton

ft

cfm/ton

%

F

gr/lbF

gr/lb

MBh

MBh

cfm

F

%



Zone - Zone - 004

System - WSHP - 1




-507 0 -507 -1.5%Exhaust Heat




Supply Air Leakage

0 0

0 0

0.0%

0.0%

0

0.0%

0.0%




33/164


By Setty


LOUDON COUNTY, VA

Solar Gain


Roof Transmission

Floor Transmission


Net Ceiling Load

Lighting

People



Sub-Total ==>

Ventilation Load

Supply Fan Load


Wall Load to Plenum

Roof Load to Plenum





Over/Under Sizing

Total Cooling Loads

6,262

356361

0

0

0

0

2,416

5,000 4,000

1,079 0

0 0

0 1,539

237

00

110

646

604

0 0

0

354

0

0 0

0

Reheat at Design

6,262

356361

0

0

0

0

2,416

237

0

110

646

604

0

0

354

1,539

9,000

1,079

0

0

0

15,473 4,000 19,473

17,167 5,539 22,706

27.6%

1.6%1.6%

0.0%

0.0%

0.0%

0.0%

10.6%

39.6%

4.7%

0.0%

85.8%

6.8%

1.0%

0.0%0.0%0.5%

2.8%

2.7%

0.0%0.0%

0.0%

1.6%

0.0%

100.0 %



of Total





Coil Sensible Load

Coil Total Load





Total Cooling Load

Area / Load

Total Floor Area


Percent Outdoor Air


76.1 / 62.9

57.0 / 53.464.95

54.94

17.17

22.71

57.00

800.82

54.29

2.1

306.28

632

1.27388.09

34.4

TETD-TA1

cfm/ft

ton

ft/ton

ft

cfm/ton

%

F

gr/lbF

gr/lb

MBh

MBh

cfm

F

%



Zone - Zone - 005

System - WSHP - 1




-258 0 -258 -1.1%Exhaust Heat




Supply Air Leakage

0 0

0 0

0.0%

0.0%

0

0.0%

0.0%




34/164


By Setty


LOUDON COUNTY, VA

Solar Gain

Glass Transmission

Wall Transmission

Roof Transmission

Floor Transmission


Net Ceiling Load

Lighting

People



Sub-Total ==>

Ventilation Load

Supply Fan Load


Wall Load to Plenum

Roof Load to Plenum





Over/Under Sizing

Total Cooling Loads

7,616

770

602

0

0

0

0

2,416

5,000 4,000

1,079 0

0 0

0 1,605

276

00

183

1,416

604

0 0

0

1

0

0 0

0

Reheat at Design

7,616

770

602

0

0

0

0

2,416

276

0

183

1,416

604

0

0

1

1,605

9,000

1,079

0

0

0

17,483 4,000 21,483

19,505 5,605 25,109

30.3%

3.1%

2.4%

0.0%

0.0%

0.0%

0.0%

9.6%

35.8%

4.3%

0.0%

85.6%

6.4%

1.1%

0.0%0.0%0.7%

5.6%

2.4%

0.0%0.0%

0.0%

0.0%

0.0%

100.0 %



of Total



Coil Entering Humidity Ratio

Coil Leaving Air (DB / WB)


Coil Sensible Load

Coil Total Load





Total Cooling Load

Area / Load

Total Floor Area


Percent Outdoor Air


76.8 / 63.2

57.0 / 54.1

64.95

57.88

19.50

25.11

57.00

930.16

52.68

2.3

279.18

632

1.47410.89

29.7

TETD-TA1

cfm/ft

ton

ft/ton

ft

cfm/ton

%

F

gr/lb

F

gr/lb

MBh

MBh

cfm

F

%



Zone - Zone - 006

System - WSHP - 1



Coil Peak Calculation Time: August, hour 16

-458 0 -458 -1.8%Exhaust Heat




Supply Air Leakage

0 0

0 0

0.0%

0.0%

0

0.0%

0.0%




35/164


By Setty


LOUDON COUNTY, VA

Solar Gain

Glass Transmission

Wall Transmission

Roof Transmission

Floor Transmission


Net Ceiling Load

Lighting

People



Sub-Total ==>

Ventilation Load

Supply Fan Load


Wall Load to Plenum

Roof Load to Plenum





Over/Under Sizing

Total Cooling Loads

1,871

281

155

0

0

0

0

956

0 0

0 0

0 0

0 596

57

00

47

1,546

239

0 0

0

1

0

0 0

0

Reheat at Design

1,871

281

155

0

0

0

0

956

57

0

47

1,546

239

0

0

1

596

0

0

0

0

0

3,262 0 3,262

5,083 596 5,679

32.9%

5.0%

2.7%

0.0%

0.0%

0.0%

0.0%

16.8%

0.0%

0.0%

0.0%

57.4%

10.5%

1.0%

0.0%0.0%0.8%

27.2%

4.2%

0.0%0.0%

0.0%

0.0%

0.0%

100.0 %



of Total






Coil Sensible Load

Coil Total Load





Total Cooling Load

Area / Load

Total Floor Area


Percent Outdoor Air


76.8 / 63.2

57.0 / 53.2

64.95

54.24

5.08

5.68

57.00

192.02

45.44

0.5

1,401.84

700

0.27384.55

21.9

TETD-TA1

cfm/ft

ton

ft/ton

ft

cfm/ton

%

F

gr/lb

F

gr/lb

MBh

MBh

cfm

F

%


Room - Corridor

Zone - Zone - 007

System - WSHP - 1




-70 0 -70 -1.2%Exhaust Heat




Supply Air Leakage

0 0

0 0

0.0%

0.0%

0

0.0%

0.0%




36/164


By Setty


LOUDON COUNTY, VA

Solar Gain

Glass Transmission

Wall Transmission

Roof Transmission

Floor Transmission


Net Ceiling Load

Lighting

People



Sub-Total ==>

Ventilation Load

Supply Fan Load


Wall Load to Plenum

Roof Load to Plenum





Over/Under Sizing

Total Cooling Loads

12,603

939

844

0

0

0

0

2,695

5,500 4,400

1,203 0

0 0

0 1,971

355

00

256

968

674

0 0

0

1

0

0 0

0

Reheat at Design

12,603

939

844

0

0

0

0

2,695

355

0

256

968

674

0

0

1

1,971

9,900

1,203

0

0

0

23,784 4,400 28,184

25,666 6,371 32,037

39.3%

2.9%

2.6%

0.0%

0.0%

0.0%

0.0%

8.4%

30.9%

3.8%

0.0%

88.0%

6.2%

1.1%

0.0%0.0%0.8%

3.0%

2.1%

0.0%0.0%

0.0%

0.0%

0.0%

100.0 %



of Total






Coil Sensible Load

Coil Total Load





Total Cooling Load

Area / Load

Total Floor Area


Percent Outdoor Air


76.4 / 63.0

57.0 / 54.0

64.95

57.61

25.67

32.04

57.00

1,197.59

53.76

2.9

246.59

705

1.70418.89

25.4

TETD-TA1

cfm/ft

ton

ft/ton

ft

cfm/ton

%

F

gr/lb

F

gr/lb

MBh

MBh

cfm

F

%


Room - Childcare#5

Zone - Zone - 008

System - WSHP - 1




-372 0 -372 -1.2%Exhaust Heat




Supply Air Leakage

0 0

0 0

0.0%

0.0%

0

0.0%

0.0%




37/164


By Setty


LOUDON COUNTY, VA

Solar Gain

Glass Transmission

Wall Transmission

Roof Transmission

Floor Transmission


Net Ceiling Load

Lighting

People



Sub-Total ==>

Ventilation Load

Supply Fan Load


Wall Load to Plenum

Roof Load to Plenum





Over/Under Sizing

Total Cooling Loads

5,656

532

447

0

0

0

0

1,831

6,000 4,800

817 0

0 0

0 1,896

252

00

136

953

458

0 0

0

1

0

0 0

0

Reheat at Design

5,656

532

447

0

0

0

0

1,831

252

0

136

953

458

0

0

1

1,896

10,800

817

0

0

0

15,283 4,800 20,083

16,643 6,696 23,339

24.2%

2.3%

1.9%

0.0%

0.0%

0.0%

0.0%

7.8%

46.3%

3.5%

0.0%

86.1%

8.1%

1.1%

0.0%0.0%0.6%

4.1%

2.0%

0.0%0.0%

0.0%

0.0%

0.0%

100.0 %



of Total






Coil Sensible Load

Coil Total Load





Total Cooling Load

Area / Load

Total Floor Area


Percent Outdoor Air


76.6 / 63.1

57.0 / 53.9

64.95

56.92

16.64

23.34

57.00

848.87

54.75

2.1

224.92

479

1.77398.60

35.0

TETD-TA1

cfm/ft

ton

ft/ton

ft

cfm/ton

%

F

gr/lb

F

gr/lb

MBh

MBh

cfm

F

%


Room - Adultroom#6

Zone - Zone - 009

System - WSHP - 1




-439 0 -439 -1.9%Exhaust Heat




Supply Air Leakage

0 0

0 0

0.0%

0.0%

0

0.0%

0.0%




38/164


By Setty


LOUDON COUNTY, VA

Solar Gain

Glass Transmission

Wall Transmission

Roof Transmission

Floor Transm

Documents

140415 LCC Revised Mechanical Systems Analysis Report