COMBINED HEAT AND POWER

HEAT RECOVERY ON GENERATORS FUME

KHATERENGINEERING AND TRADING SAL

Client: UMC-RHElectro-Mechanical Consultant: Mr. Mario AzziElectrical Contractor: POTEL SARL

OVERVIEW COMBINED HEAT & POWER (CHP)

DEFINITION

TYPES OF CHP SYSTEMS

BENEFITS OF CHP

UMC-RH (Rizk Hospital)/ HEAT RECOVERY ON GENERATORS ENERGY NEEDS

HEAT RECOVERY SYSTEM

SAVINGS

WHAT IS CHP?• CHP = COMBINED HEAT & POWER

• CHP is the use of a heat engine to generate simultaneously electricity and useful heat.

• It is a way to use heat usually wasted when electricity is generated.It recovers waste of heating, cooling or dehumidification.

TYPES OF CHP SYSTEMSCHP comes in a variety of configurations to match the needs

of energy consumers:

CHP FOR HEATINGHeat and Power to multiple customers in city centers, towns, hospitals, … and other zones where there is high demand of heat.

TRIGENERATIONAlso known as combined cool, heat and power (CCHP).Heat is cooled by absorption chillers linked to the CHP system. Heat

INDUSTRIAL CHPHigh value of heat (at the temperatures and pressures required by industry) along with electricity.

produced is cooled by absorption chillers linked to the CHP system

BENEFITS OF CHP HIGH OVERALL EFFICIENCY UP TO 80% OR MORE at the

point of use CHP system

SAVINGS UP TO 30% of ENERGY BILLS

SAVINGS UP TO 30% of CARBON EMISSIONS

FLEXIBLE AND RESPONSIVE HEAT SUPPLYthe thermal energy (heat or cooling) produced by CHP can be easily stored and later delivered to meet demand

UMC-Rizk HospitalHEAT RECOVERY ON GENERATORS FUME

ENERGY NEEDS FOR HOSPITAL

HOSPITAL IS AN EXCELLENT CANDIDATE FOR A TRIGENERATION SYSTEM. IN OUR CASE, DESIGN IS APPLIED ONLY ON GAS EXHAUST TO COVER THE HEATING DEMAND.

THERMAL ENERGY - HOT WATER DEMAND FOR:

HOT WATER TANKS

LAUNDRY

HOSPITAL MEDICAL EQUIPMENT

STERILIZATION

SPACE HEATING/COOLING SYSTEM

ABSORPTION CHILLERS

OTHER SERVICES

FUEL FOR

GENSET100%

ELECTRICITY35%

LOSSES65%

RADIATOR20%

RADIATION15%

FUME30%

ELECTRICITY35%

GENSET PERFORMANCE RATES

UMC-RH POWER PLANT5 GENERATORS 650KVA AVAILABLE ON SITE

2 GENERATORS 650KVA CONNECTED TO RECOVERY SYSTEM

HEAT RECOVERY CONTROL WIRING

SHELL AND TUBE HEAT EXCHANGER

INLETFUME570°C

OUTLETFUME220°C`

INLETWATER

70°C

OUTLETWATER

90°C

MOTORISEDDAMPERS

VARIABLE SPEED PRIMARY PUMPS

SEASONAL PERFORMANCE

SEASON WINTER SPRING SUMMER FALL

ELECTRICAL

LOADLOW MEDIUM HIGH MEDIUM

AVAILABLE

RECOVERYLOW MEDIUM HIGH MEDIUM

HEATING

DEMANDHIGH MEDIUM LOW MEDIUM

HOURLY MEASUREMENTS

DATA FROM ENERGY METER GENERATORS DATA

DATE TIME HOT T°C COLD T°C ∆T FLOW RATE m3/h

KWRECOVERED

Load %

KW ELECTRICAL

(2 XGEN)

05/06/13 12:05 AM 91.5 85.2 6.3 27.665 194.49 38 394

05/06/13 12:10 AM 92.2 85.9 6.3 27.683 194.193 36 354

05/06/13 12:15 AM 92.7 86.7 6 26.784 182.35 39 400

05/06/13 12:20 AM 93.1 87.3 5.8 27.612 179.348 38 396

05/06/13 12:25 AM 92.9 87.7 5.2 28.682 167.511 37 380

05/06/13 12:30 AM 94.1 88.3 5.8 27.21 178.42 37 348

05/06/13 12:35 AM 90.5 84.2 6.3 27.6 194.49 32 336

05/06/13 12:40 AM 93.9 88.3 5.6 28.35 177 34 344

05/06/13 12:45 AM 94.5 88.7 5.8 27.74 180.9 34 346

05/06/13 12:50 AM 94.1 89.2 5 28 156.7 36 374

05/06/13 12:55 AM 95.3 89.5 5.1 26.36 171 32 316

05/06/13 13:00 AM 95.4 89.8 5.5 28.13 175.29 35 352

MEASUREMENTS TAKEN DURING OPERATION OF TWO GENSETS

DAILY MEASUREMENTSMEASUREMENTS TAKEN DURING OPERATION OF ONE GENSET

DATA FROM ENERGY METER

DATE TIME VOLUME m3 ENERGY KWh Free Energy KWh

09/03/13 11:59 PM 464.05 1800

10/03/13 11:59 PM 513.41 1940 140

11/03/13 11:59 PM 557.31 2080 140

12/03/13 11:59 PM 591.48 2240 160

13/03/13 11:59 PM 627.30 2410 170

14/03/13 11:59 PM 667.25 2580 170

15/03/13 11:59 PM 709.97 2780 200

16/03/13 11:59 PM 749.95 2900 120

17/03/13 11:59 PM 803.57 3020 120

18/03/13 11:59 PM 854.39 3170 150

19/03/13 11:59 PM 891 3310 140

20/03/13 11:59 PM 927.63 3450 140

21/03/13 11:59 PM 977.78 3600 150

SAVINGS

PERFORMANCE

• 2 X Genset 650KVA each2 X 300KW Heat Exchanger each (at 100% electrical load)3Hours/Day Operation80% Loading Factor

• Exhaust Flow Gas Rate: 2705 Kg/hr• Exhaust Entering Temperature: 568˚C• Exhaust Gas Leaving Temperature: 220˚C

• Water Flow Rate: 12.5m3/hr• Entering Temperature: 70˚C• Leaving Temperature: 90˚C 

SAVINGS SAVINGS

• Annual Hours of Operation:3 hours / day x 365 days = 1095 hours of operation

• Annual Capacity Recovered at 80% load:2 x 300 KW x 0.8 x 1095 hr = 525 600 KWh / year

• Input Fuel Energy Saved (90% eff.): 584 000 KWh / year• Fuel Cost per 1000 L Diesel: 1000 $• Hourly Savings: 44.4$• Less charges on boilers 10000$

• Fix Annual Cost:- Maintenance Cost- Special Cleaning Workmanship- Electricity for pumps- Spare parts

• NET SAVINGS:- NET TOTAL YEARLY SAVINGS ~ 60,000$- PAYBACK PERIOD ~ 3.5 YEARS

THANK YOU

KHATER ENGINEERING & TRADING SAL Pine Bldg, P.O.Box 55 Mansourieh-El-Metn, Lebanon Tel: +961 (4) 400353 - 409493, Fax:+961 (4) 401784