Energy Efficiency Group

a report from

Energy Efficiency Group

Tomorrow’s Energy Technologies Today

www.energyefficiencygroup.net

If you have a mandate to further reduce costs … and you’ve

already done most all you can to cut costs, what is possible?

Generally save 10%-30% more with “latest” technologies

Generally qualify for rebates up to 70% of project cost

Enjoy 25% to 50% R.O.I.

Recover investment from savings in 12 to 36 months

Complete projects with no cash outlay

www.energyefficiencygroup.net 2

Department of Energy data


Delivered commercial energy consumption per capita - from DOE/EIA Annual

Energy Outlook 2006

Department of Energy report depicting impact of taking

advantage of the “best available technology” to cut cost.


Delivered commercial energy intensity (variation from reference case) - DOE/EIA

Added savings of 8% to 12% for facilities already highly efficient

Savings of 25% to 50% for facilities not yet energy efficient

HVAC…save to 50% with compressor and controls, CO

and CO2 sensors, EMS, and HVAC ultraviolet systems

LIGHTING …save to 70% for buildings, garages, and street lights

with latest fluorescent, LED, and induction lighting, and controls





Installs at A/C coil to cut energy cost, improve IAQ, eliminate coil cleaning

Florida Hospital emitters

enhance IAQ and infection

control, save maintenance

and downtime. The

substantial energy savings

are a great bonus.

— Florida

Hospital, Orlando, Flor

ida


UVC installation downstream of A/C coils

UVC cleans dirty coils and restores like-new performance

We have eliminated our four-

time per-year coil cleaning

program and estimate a

conservative 28% drop in

A/C system energy usage.

— American Electric

Power, Dallas, Texas


Steril-Aire UVC emitters

Microscopic amounts of coil fouling significantly reduce efficiency

1. All A/C attracts mold

and fouls coils.

2. Cleaning only removes

surface fouling.

3. Coil fouling reduces heat

transfer and air flow.


Fouling Efficiency

Thickness Loss

.006” 16%

.012” 20%

.024” 27%

.036” 33%

.064” 50%

UVC cleans coils and greatly improves indoor air quality

Coil fouling is

demonstrated with

samples taken from coils.

Installed in coil

plenum, UVC eradicates

bacteria and mold.

— Air Conditioning/

Heating/ Refrigeration

News


Sample with no fouling after Steril-Aire

Sample of fouling taken before Steril-Aire

Stop the spread of infectious disease through A/C delivery

system

UV disinfection works by

penetrating cell walls of

pathogenic organisms and

structurally altering

DNA, thus preventing cell

replication.

— U.S Environmental

Protection Agency


UVC light is so intense that it destroys DNA

of viruses and other microorganisms

Elimination of excess outside air ventilation for major energy savings

The City of Seattle has

standardized on the AirTest

CO2 sensor… although there

was significant savings on

cooling cost, the big savings

was on heating costs.

— Seattle City Light


CO2 sensors placed in zones throughout building

http://www.energyinnovation.net/pdfs/30eig/A13cec_letter.pdf


Elimination of excess outside air ventilation can save up to 20%

The cost for heating or

cooling of excessive

outside air for building

ventilation can be up to

20% of HVAC cost.

There are occupancy

variations and excess

ventilation over design

in most buildings.



Building air intakes are not measured and the delivery of outside air

is not controlled, generally resulting in significant over-ventilation.

Most buildings are over-ventilated 200% to 400% in excess of actual

need., especially those with significant occupancy swings .

CO2 system determines real-time occupancy throughout the building

and adjusts outside air to match the need and cut HVAC cost 5- 20%.


Latest advance in electrochemical sensor technology

Fan run time reduced from 24

hours to about 45 minutes

per day – over 90%

reduction with a simple

payback of 18 months.

— CB Richard

Ellis, Westwood Plaza


CO sensor installed in parking garage


Garage fan run time reduced by 90% at Trident Center

Total demand reduced from

67 kW before installation

to 7 kW after

installation, for a

reduction of 90%. The

project had a simple

payback of 12 months.

— Trident Center

Project

Summary, California

Energy Commission


Control unit


Fans typically run continuously when enclosed garages are open.

Generally, CO level may require fans about 10% of the time.

CO sensors operate fans only when necessary to keep CO from

reaching unhealthful levels to produce typical 80% to 90% savings.

VFDs on fans maintain constant base level of ventilation

and only increase fans to levels necessary if CO is present.


Turbocor oil-free compressor retrofit reducing HVAC costs to

70%

This revolutionary technology

provides efficiencies up to

30% better than any other

compressor in its size range

in addition to being

extraordinarily quiet and

virtually vibration free.

— 2003 AHR Expo

Innovation Awards


Turbocor oil-free compressor



Oil-free compressor with VFD and magnetic bearings

Based on test results, 30-40%

energy savings over

reciprocating air-cooled

compressor technologies

are realistic.

— San Diego Regional

Energy Office


Turbocor compressor installed on

88-ton York air-cooled chiller





With built-in VFD, Turbocor matches

cooling load at 60 tons to 700 tons +

Compact (approx.1/5 ordinary size)

Light (Less than 270lb)

Quiet (less than 70dB at full load)

Virtually frictionless (magnetic bearings)

On board digital electronics

Highly energy efficient and oil-free




ASHRAE research study 601

Lo

ss o

f Effic

ien

cy

Percent Oil in the System

The vast majority of

installed chillers have

an excess amount of

oil in the cooling

system.

The refrigerant charge

oil requirement of

compressors reduces

system efficiency often

over 20%.

In ten (10)

chillers

tested in the

ASHRAE

study,

average oil

system

overcharge

was 12.88%,

for average

21% energy loss.


Percent Oil in System


Percentages of time equipment operates at varying

load factors of comfort cooling for various climates

Visibly clear film reduces solar heat to

50% without changing building appearance

Tinted films reduce solar heat 50% to

80% and reduce glare

Reflective films reduce solar heat 80%

Graffiti protection film protects

windows from vandals

Security film protects against shattering


Infrared heat and U.V. rays

increase air conditioning

cost, create discomfort, and

cause fading.

Visually clear, tinted or

reflective solar protection

film can reduce up to 80%

of solar heat and block up

to 99% of U.V. rays.


Determine big picture of “what is possible” energy

savings and return-on-investment targets

Complete detailed assessment of facilities, develop and

evaluate energy savings options, and economic analysis

Develop Opportunity Report of action and economics for

one-stop, concept through completion energy strategy



Energy Efficiency Group

Tel: 310 770 9930

Tel: 818 674 1418

E-mail: [email protected]

http://energyeffiencygroup.com/index-4.html

Technology

Energy Efficiency Group