BROAD Micro Gas Air Conditioning

Functions: cooling, heating, hot waterFuel: NG, LPG, dieselCooling capacity: 23kW, 70kW, 115kW (6.6Rt, 20Rt, 33Rt)Ideal for homes, offces and small buildings, etc.

April 2008 En

BROAD FACTS

BROAD was established in 1988 with USD 3, 000 by Mr. Zhang Yue, BROAD Chairman.

In 1992, BROAD developed China’s first non-electric air conditioning.

BROAD has become the world’s largest manufacturer & seller since 1996.

In 2002, BROAD developed the world’s smallest micro gas air conditioning, which is termed BROAD Comfort Technology (BCT).

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(Villa Air Conditioning, BCT)Micro

Gas

Air

Conditioning

Cooling 7°C chilled water Area coverage:Heating 57°C heating water BCT23: 200-600m²Hot water 80°C hot water BCT70: 500-1,500m²Fuels: natural gas, diesel BCT115: 800-2,000m²Coolingefficiency110%Heatingefficiency88%

WITNESS THE QUALITY OF DELUXE VILLASMultifunctional Three functions in one: cooling/ heating/ hot water.

Powerful cooling & heating Gas input provides enough heat in icy winters.Water cooling offers enough cold in torrid summers.

Super energy saving Natural gas input saves 50% more primary energy compared with electric heat pumps.

Absolutely safe Installed outdoors at any place within 50m away fromhouses. No gas poisoning risks.

Widely applied Can be used for air conditioning, heating radiator,floorheatingandradiationheating,applicabletoall kinds of icy and torrid climate conditions.

Convenient for use Year-round auto operation of cooling, heating & hot water. Auto on/off per ambient temperature. Auto constant temperature control.

Top quality All models shaped by dies, made by assembly lines and 100% commissioned in factory. All European/US safetycertificatessecured.

Smallest in the world Designed for 200-2000m2 buildings and solved the world puzzle of small lithium bromide air conditioning.

(Villa Air Conditioning)Micro Gas Air Conditioning System

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1.Combustion To provide cooling/heating operation by using natural gas.

2.Cooling Concentrated solution enters absorber and condensed water enters evaporator for cooling.

3.Vacuum Auto purge device maintains the interior vacuum. No vacuum pump is needed during the whole lifespan.

6.Hot water 80℃primary heating water heats water in tanks.

5.Cooling/heating switch Auto cooling/heating switch valve.

4.Cooling water Heat rejection from air conditioning system and interior of the chiller.

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Performance Data

Model BCT23 BCT70 BCT115

cooling capacity kW 23 70 115

Rt 6.6 20 33

heating capacity kW 23 70 115

hot W capacity kW 7.7 39 39

A/C water

chilled water O/I temp °C 7/14 7/14 7/14

heating water O/I temp °C 57/50 57/50 57/50

flowrate m3/h 2.9 8.6 14.3

external head mH2O 8 11 12

hot W

primary heating water O/I temp °C 80/60 80/60 80/60

flowrate m3/h 0.33 1.68 1.68

NG consumption

cooling m3/h 2.2 6.4 10.5

heating m3/h 2.6 7.8 13.0

hot W m3/h 0.9 4.3 4.3

electricity and water consumption

electricity for cooling kW 1.8 5.2 7.2

electricity for heating kW 0.7 1.7 2.3

water for cooling t/h 0.06 0.18 0.30

operating noise dB(A) 63 65 65

ship. weight kg 550 1650 2480

A/C W hold-up volume kg 10 32 48

Others:1. Fuel: NG, LPG, Light oil, please specify it in purchase orders. Natural gas consumption is calculated 10 kWh/m3 (8,600 kcal/m3).2.Standardgaspressure:200~650mmH2O. Pressure release valve has to be installed if the pressure is higher than the standard.3. Standard condition for cooling: 36°C , humidity 50%. Permitted condition: summer ≤ 45°C winter ≥ -30°C.4. Lowest permitted outlet temp. for chilled W: 5°C. Pressure limit for chilled/ heating/ hot W: 40 mH2O.5. Hot W can only be used after secondary heat exchange, otherwise it gets scaled.6. Single phase power for BCT23 and 3 phase for BCT70/115.7. Rated cooling COP: 110% Rated heating COP: 88%8. Life design: 20 years.

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● BROAD recommendations are as follows: 1 unit for buildings ≤ 300m2

1~2unitsforbuildings≤ 2000m2

2~3unitsforbuildings> 2000m2

For year-round non-stop operation, at least 2 units are recommended, but standby units are not recommended. Several units can be incorporated into an integrated system. ● Lead time: 2~4monthsforsmallquantityorders. Orders greater than 300 units, take at least 4 months.

%

%

%

cooling capacity changes

cooling capacity %

ambient temp changes

ambient temp ℃

chilled water temp changes

chilled water outlet temp ℃

heating capacity changes

heating capacity %

cooling capacityfuel consumption

electricity consumption

24 26 28 30 32 34 36 38 40

5 6 7 8 9 10 11 12 13

water consumption

Performance CurvesModel Selection & Ordering

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Model A B C D E F G H I J K L M N

BCT23 1350 830 2230 2000 115 390 770 680 Φ22 Φ42 Φ15 Φ15 Φ22 800

BCT70 2250 1610 2230 2500 145 905 1055 1460 Φ35 Φ67 Φ35 Φ15 Φ35 1000

BCT115 2770 1610 2230 2500 145 1020 1460 1460 Φ35 Φ67 Φ35 Φ15 Φ35 1000

Design & Construction Tips

Dimensions

Note: All units are in mm.

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2. Line type: actuator output sensor input

P&I Diagram

hot W

hot W

fuel inlet

A/C W

net cable

power cable

A/C W

water make-up

timing drain

anti-sludge

biocide

hot air

1 HTG2 LTG3 condenser4 evaporator5 absorber6 HTHE7 LTHE8 cooling tower9 auto purge device10 hot W heater*

SPRPKTSBLQBRSBLQFJRSJF1F2F3F4

F5

V6

V7V8YRYDFE

YCG

FA

FB

FCFD

FFZHFKZGBCT1T2T3

T5T6T7T8T9

T11W1W2B1B2B3U1U2U3U4U5U6

solution pumprefrigerant pumpchilled/heating W pumpcooling W pumphot W pumpcooling tower fanburnercooling/heating switchvent three-way valveventreflowvalveHTG concentration regulating valvevacuum vent valve & mannual valvechilled/heating W flowmeter

heatingWflowmetergasflowmeterrefrigerant valvedrain device ( timer on)watermake-upfloatingball valvecooling water quality stabilizer valve (manual)non-condensable chamber purge valve (manual)direct purge valve (manual)solution valve (manual)fuel valve (manual)

vent shut-off valvecheck valveoutdoor control cabinet burner controlA/C W inlet temp sensorA/C W outlet temp sensorcooling W outlet temp sensorHTG temp sensor (to PLC)ambient temp sensorexhaust temp sensorhot W temperature sensorA/C W calibration temp sensor

control cabinet temp sensorHTG temp switch hot W temp switchA/CWflowswitchA/CWflowswitchhotWflowswitchHTG solution level proberefrigerant level probenon-condensable sensorLTG crystallization sensorcooling W level probevent over level probe

vent vent

Notes:1. Parts marked with " * " are for hot water, not applicable to cooling-heating type. Parts marked with " ** " are for heating operation, not applicable to cooling only type.

T8 W2 T7

U4

B3 U1

U6

T5

W1

T2T9

T11

U2

T6

T1 B1 B2T3

U3

U5

ZHF

FV7

RSB

ZHF

KZG

KTSBSP

FC

F2

YRRP

LQB

FEYD

F3

YCG

YCG

LQFJ

FA

FB

F5

8

54

76

3

2

1

RSJ

FD

V6

F

FV8F1 F4

10

9

BC

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Cooling Cycle

Making cold from hot! Here’s howeasily it is done.

When a liquid absorbs heat from itssurroundings it evaporates. Forexample, when you spread alcohol onyour hand, your hand will feel verycool as the alcohol absorbs heat fromyour hand and evaporates into the air.Air conditioning equipment is designedaccording to this principle.

Water evaporates at 100 ° C undernormal atmospheric pressure, butwater can also evaporate at very lowtemperatures under vacuumconditions. By creating a vacuum (6-mmHg pressure) in the air tight vesselof the BCT outdoor unit, water canevaporate even at 4° C.

The BCT outdoor unit utilizes lithiumbromide as the absorbent, water as therefrigerant and natural gas as theheating source. Because lithiumbromide solution is a very strongabsorbent, it can absorb the surround-ing vapor and maintain the lowpressure condition in the evaporator.

Chilled water at 14° C enters the insideof the copper evaporator tubes and therefrigerant water at 4° C is sprayed onthe outside of the tubes (undervacuum). The refrigerant waterabsorbs heat from the chilled waterand evaporates (becomes vapor);thereby the chilled water temperatureis reduced to 7° C. Concentratedlithium bromide solution in theabsorber, attracts and absorbs therefrigerant vapor and then transfers theheat from the vapor to the coolingwater. The cooling water heat isreleased to the ambient air via thecooling tower. The diluted lithiumbromide solution is pumped to thehigh temperature generator where it isreheated and refrigerant vapor evaporatesfrom the solution making the solutionconcentrated once again. The concen-trated solution repeats the absorbingprocess and the steam goes to thecondenser where it is liquefied andreturned to the evaporator to begin thecycle again.

Heating Cycle

Combustion heats the lithium bromidesolution in the high temp. generator.The hot vapor produced by the solutionmigrates to the low pressure vesselheating the water in the heat exchangertubes to provide space heating. Thisheat transfer condenses and returns thevapor to the Lithium Bromide solutionand is pumped into the high temp.generator to repeat the cycle.

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EXTENSIVE APPLICATIONSBCT chillers are not only ideal for homes but alsoshops, restaurants, office buildings or even for starhotels and clubs. For buildings with big investment,more BCT chillers can be used for different loadrequirements, which is more convenient and moreenergy- saving, more money-saving and more flexiblefor chiller location.

For instance, seven BCT chillers are used in a hotel to provide air conditioning and hot water fordeluxe suites, lobby, dining-rooms, meeting rooms, entertainment center and fitness center.

BCT chiller can be for a 5,000m2 building

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BCT outdoor units can be locatednicely outside the hotel.

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BCT outdoor units look big. If clients do notlike eye-catching industrial equipment, theymay purchase from BROAD a standardizedwooden enlosure or clients may build a big-sized wooden fence or plant a few trees.

STRINGENT QUALITY

SYSTEM

Production lines of BCT outdoor units are BROAD-designed, adopting the most cutting-edge facilities andinstruments, consisting of more than 200 processes.

BROAD has the quality deviation upper limit of 0.002%,which requires very qualified staff. Management staff,engineers and workers co-set up the quality managementsystem with meticulous care.

BCT quality control features are as follows: 100%inspection for all parts purchased, every vacuum partmust be helium checked, the whole chiller shotblasted, chiller coated with high temperature resistantresin. Every chiller must be tested and experimentednot less than 24 hours.

BCT system got CE marked andETL listed in 2004, which includeoutdoor units, indoor units, hotwater tanks and control system.BCT chillers are in more than 60countries now.

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100g love the earth

Note: BROAD pursues a policy of continuous product perfection. Catalog information is subject to changes without notice.

ISO9001

BROADcentralairconditioninghasobtainedallcertificationofISO,CE, UL, ETL, ASME, and other international certication

ENERGY CONSERVATION IS

PRIORITY OF A/C

BROAD Town, Changsha, P.R.China Zip Code: 410138Tel: +86-731-84086688Fax: +86-731-84610087Web: www.broad.comEmail: terminals@broad.net