combined heat and power heat recovery on generators fume
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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
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