USE ENERGY RIGHT

With Green Solutions on Waste Heat Recovery Cooling/Heating TechnologyWaste Heat Recovery Cooling/Heating Technology

By David ZhuBy David Zhu Sales Manager of Shuangliang Eco-Energy Systems Co.,Ltd.

What Exhausted is not Waste, but Money !

What shall we do?at s a e do

Purpose of CCHP, Co-Gen & Tri-Gen: Raise energy efficiencyMain method: Waste Heat Recovery Cooling/Absorption Cooling TechnologyMain method: Waste Heat Recovery Cooling/Absorption Cooling Technology

85%

Shuangliang Solutions

HRC SystemProduce

-5 ℃< t <25 ℃

Waste

HRC System 5 ℃< t <25 ℃Chilled water

heat Produce

HRH System Plus 40 ℃,Maximum 175 ℃

H t t tHot water or up to 6bar steam

Topic: Use Energy Right, Energy Efficiencyop c Use e gy g t, e gy c e cy

Part I Waste Heat Recovery Heating Technology

Part II Waste Heat Recovery Cooling TechnologyPart III Typical Application of WHRCPart VI Boundary of HRC/HRH Applications

Part I Waste Heat RecoveryPart I Waste Heat Recovery Heating Technology

– Absorption Heat Pump

65℃ 250℃20℃ 130℃Waste heat Source

Temperature

65 130 250Waste heat

20 70

Waste heat boiler2nd category heat pump

1st category heat pump

Heat source can be steam, hot water, heat-conducting oil, , , g ,multi component gas and other related media.

Type of Absorption Heat Pump

First-category: •Gas, oil, steam, hot water. •COP: 1 8~2 2COP: 1.8 2.2•Waste hot water 20~70 Deg.C•Hot water 40 plus less 100 Deg.C•Capacity Range: 2-35MWCapacity Range: 2 35MW

Secondary-category: •Waste heat above 65 Deg.Cg•COP: 0.48•Hot water 40 plus less 175 Deg.C•Capacity Range: 1-15MW

All system is Tailor Made

1st Category Steam Operated Heat Pump

Driving Heat sourceDriving Heat source Waste Heat SourceWaste Heat Source Output HeatOutput Heat

Waste HeatWaste Heat Heat Output

1.0 0.8 1.8

QQinin 11 QQinin 22 Q Q outout00

Save energy by 40％ above!gy y ％

Working Principle of 1st Category Heat Pump

60% heat

90 ℃

60% heat

Output 100% heat

66 ℃

30 ℃40% heat66 ℃

40 ℃50 ℃

Application in Metallurgy – Aluminium Industry

Application in District/City Heating Network in China

Guo Dian Power Datong No.2 Power Plant, China

Heating Capacity: 10x 35MWg p yThe biggest absorption heat pump

project in the world

China National Offshore Oil Corp., Tianjin, China

3 units of direct fired heat pump,p p,Recovering heat of underground water

2nd Category Heat Pump:

Middle Grade Heat Middle Grade Heat High Grade Heat High Grade Heat Low Grade Heat is Low Grade Heat is rejected by cooling rejected by cooling

water water

1.0 0.48 0.52

QQinin 00 QQ tt 11 QQ tt 22QQinin QQoutout 11 QQoutout 22

Working Principle of 2nd Category Heat PumpOutput 52% of heat from 109 ℃ hot water

37 ℃

p

32 ℃

109 ℃

85 ℃

85 ℃140 ℃

109 ℃130 ℃

Output 48% of heat from 109 ℃ hotwater

Application in Polysilican Industry

32℃

38℃

85℃

HRHHRH II

32℃

Rectifying columnHRH

UnitHRH II

109℃

Hot water140℃

109℃

Hot water

Steam2.5-3bar steam130℃

Silica reduction stove

Steam generator

Polysilican reducing furnace

Steam generator

Application in Petroleum and Chemical - Butadiene Rubber Producing

Daqing Petrochemical CoDaqing Petrochemical Co., China

Heating Capacity: 3370KWBenefit: save 48000 tons of

steam/year and saveli tcooling water

Difference between 1st & 2nd Category Heat Pump

•1st Category Heat Pump consume 60% useful heat to recover 40% energy from low level waste heat (>20 ℃).

• 2nd Category Heat Pump consumed 100% medium g y ptemperature (>65 ℃ ) heat energy and achieve 48% high temperature useful heat and generate 52% low temperature waste heat.temperature waste heat.

•1st Category Heat Pump need no cooling water in operation. But 2nd Category Heat Pump need cooling water systemBut 2 Category Heat Pump need cooling water system.

Part II Waste Heat RecoveryPart II Waste Heat Recovery Cooling Technology

Working Principle of HRC/Absorption Cooling

Charles law of Gases 

T ∞ P,  V = Constant

Pressure                                Temperature

101 kPa  (760mmHg)               100 ℃

℃84 kPa  (634mmHg)                 95 ℃

6.9 kPa  (52.4mmHg)                39 ℃

1 kPa  (7.51mmHg)                  7 ℃( g)

0.87 kPa  (6.54mmHg)                  5 ℃

0.75 kPa  (5.68mmHg)                  3 ℃

Two kinds of  Liquid Mediums

Refrigerant: Water

Ab b Li hi B id S l iAbsorbent: Lithium Bromide Solution

Working Principle of HRC/Absorption Cooling

WORKING PRINCIPLE (Double Effect)

Features of Absorption Cooling Technology/Absorption Chiller

• Environmentally Friendly•.Environmentally FriendlyCFCs free, no harm to OzonosphereStatic equipment, low noise

• Low Operation Cost

• High Reliability

• Less Maintenance• Less Maintenance

Major HRC EquipmentsFlue Gas Based Multi Energy Absorption Chiller-- Flue Gas Based Multi-Energy Absorption Chiller

Variable Combination:•Flue Gas onlyy•Flue Gas + Jacket Water •Flue Gas + Make-Up Burner•Flue Gas + Jacket Water + Make-Up BurnerFlue Gas + Jacket Water + Make Up Steam•Flue Gas + Jacket Water + Make-Up Steam

Flue gas source:•Gas turbine/engine exhaust•Gas turbine/engine exhaust

Cooling Capacity Range: 99RT—2000RT

Hot water operated Absorption Chiller

Hot water can be used:From 70 ℃ to 180 ℃

Cooling Capacity Range:99RT—1488RT

Steam Operated Absorption Chiller

Steam can be used:From 0bar to 8bar

Cooling Capacity Range:99RT—3000RT

Direct Fired Absorption Chiller

Fuel:•Biogas•Natural gas•LNG•LPGDi l•Diesel

Cooling Capacity Range:99RT 3000RT99RT—3000RT

Part III Typical Application of WHRCPart III Typical Application of WHRC-- Co-gen/Tri-gen System

Types of Cogen/Trigen

Flue gas onlyg yFlue gas + Make-up burner/steamFlue gas + Jacket waterFlue gas + Jacket water + Make up burner/steamFlue gas + Jacket water + Make-up burner/steamFlue gas SteamFlue gas Hot watergFlue gas Hot water + Jacket waterJacket water only

Flue gas chiller with or without make-up burner

PT SMART, ,Indonesia,

594RT, flue gas only,3 gas engines + 3 chillers

Flue gas chiller with or without make-up burner

Hainan Hairan Hi-Tech Energy Co,Ltd., China1157RT flue gas + make-up burner chiller1157RT, flue gas + make-up burner chiller

3 gas engines + 1 chiller

Flue gas + jacket water chiller with or without make-up burner

National Laboratory, Italy896RT, flue gas + jacket water, g j

6 gas engines + 2 chillers

2008 Olympic Games y pMedia Center, China

CCHP Load PlanPPower Summer: Max load is 2.8 MW and the min load is 1.0 MW.Winter: Max load is 2.4 MW and the min load is 0.5MW.

C li d H tiCooling and Heating Summer: Max cooling load is 6840KW/h and supply/return water temp is 7-12℃.Winter: Max heating load is 5900KW/h and supply/return water temp is 60-50℃.

SystemSystemPower Gas engine for independent power supply, utility power acts as standby and make-up

CoolingCooling1 unit of flue gas + jacket water with burner chiller 1 unit of direct-fired chiller as standbyFlue gas temp: about 500℃, Jacket water temp: 90℃.

Heating Exhausted flue gas from chiller produces hot water for a 65m3 hot water tank for 24 hours sanitary hot water supply, 1 unit of 1.86 MW gas fired-boiler makes up inadequate hot water.

Flue gas chiller with make-up steam

Sinha Rotor Spinning Mills Limited, Bangladesh 1500RT, 3 gas engines + 1 chiller, 8 bar steam as make-up

DesignMachine room picture

Steam chiller + HRSG for gas/diesel engine/turbine

AutomaticDiverterValve

Exhaust 10 Bar STEAM TO STEAM Chillers

Exhaust

WASTE HEAT RECOVERY

Exhaust

WASTE HEAT RECOVERYBOILER/HRSG

EngineEngineEngine EngineEngineEngine

Financial Trade Center Karachi Pakistan

3 x 992 USRT 2 x 496 USRT2 x 496 USRT

5 Steam Chillers

Co-Gen System Gas Engines with HRSG

Pfizer, Singapore, 661RT, 1 steam chiller + HRSG for turbine

Hot water chiller + Waste Heat Recovery Boiler for gas/diesel engine /turbine

EXPANSIONTANKCHILLER Chiller Output- 250 TR

76 ℃

POWER

Bypass port >105 ℃.CHILLING

120 ℃

TITo Atm

>450 ℃

FINNED TUBE EXHAUSTHEAT RECOVERY UNIT

TI

JACKET WATER HEAT RECOVERY

91 ℃.93 ℃.

76 ℃78 ℃

Zee Television, India

270RT1 gas engine + 1 hot Water chiller

Hot water: 105/68 ℃

Combine all jacket water to one chiller

EngineEngineEngineTo chiller 91 ℃

70DC

90DC

Primary Circuit

To chiller 91 ℃

Secondary Circuit

Return 76 ℃

Colony Mills Ltd. Multan , Pakistan,2800RT 8 gas engines + 4 hot water chillers2800RT, 8 gas engines + 4 hot water chillers

GSK Biologics Vaccine Manufacture SingaporeGSK Biologics Vaccine Manufacture, Singapore223RT, 1 hot water chiller + 1 gas engine

Special Application for simultaneous Heating & Cooling Example proposal in Singapore

Heating:Is running 1 * 400KW boiler for 90℃ hot water from 60℃, plans to g , ppurchase one more same boiler for back up

Cooling:Cooling:Is using several direct fired absorption chillers

Proposal:Proposal:Special heat pump module for simultaneous Heating (400KW of 60/90℃ hot water) & Cooling (350KW of 12/7℃ chilled water)

Benefit:Shut down existing 1 boiler + 1 chiller, put them as standby and save consumption of natural gas

Working Principle of Special Application

90 ℃

60 ℃

400KW

7 ℃35 ℃

12 ℃350KW

30 ℃

Economic Analysis

1 Assume boiler efficiency is 95% to produce 400kw hot water need about1. Assume boiler efficiency is 95%, to produce 400kw hot water, need about 42.06m3 of 8609Kcal/Nm3 (36MJ/Nm3) natural gas;

2. Assume direct fire chiller's COP is 1.2, to produce 350kw chilled water, need about 29 04m3 of 8609Kcal/Nm3 (36MJ/Nm3) natural gas;need about 29.04m3 of 8609Kcal/Nm3 (36MJ/Nm3) natural gas;

3. If employee one boiler for 400kw hot water and one direct fired chiller for 350kw chilled water, totally needs 42.06 + 29.04m3 = 71.1m3 of natural gas;

4. Now our proposal needs 55.5m3 of 8609Kcal/Nm3 (36MJ/Nm3) natural gas only,4. Now our proposal needs 55.5m3 of 8609Kcal/Nm3 (36MJ/Nm3) natural gas only, SAVEMENT is 71.1 - 55.5 = 15.6m3 of 8609Kcal/Nm3 (36MJ/Nm3) natural gas every hour;

5. Assume factory runs this heat pump for 24 hours/day, 300 days/year, every y p p y, y y , yyear will SAVE 15.6m3/h * 24hours * 300days = 112320m3;

6. Cost of 8609Kcal/Nm3 (36MJ/Nm3) natural gas is SGD33/mmBTU, about USD0.89/Nm3, so EVERY YEAR CAN SAVE about USD0.89/Nm3 * 112320m3 = USD99964;

7. Payback time is less than 2 years.

Part VI Boundary of HRC/HRC ApplicationsPart VI Boundary of HRC/HRC Applications

B d f HRC/HRH A li tiBoundary of HRC/HRH Applications

Exist waste heatNeed cooling/heatingNeed cooling/heating

Combination of HRC & HRH Biochemical – Ethanol Producingg

THANK YOU!