Study of waste-heat-boiler size and performance of a conceptual marine COGAS system. Research and development report
Technical Report
·
OSTI ID:6963782
The effect of waste-heat-boiler weight and volume on the performance of an LM2500-based combined gas and steam turbine system (COGAS) is examined. The boiler is a once-through type which is controlled to extract the maximum heat from the gas turbine exhaust and still maintain acceptable minimum wall temperature. At a gas turbine power of 12,000 hp (8.95 MW), the boiler without feed-water heating can produce sufficient steam to generate 2840 hp (2120 kW) at a turbine efficiency of 80%. This boiler, including diffuser, weighs 19,300 lbs (8770 kg) and has a gas side pressure drop of 9 in. H2O (2.2 kPa). With feed-water heating, the steam power can be increased to 4000 hp (2980 kW) with a boiler weight of 38,300 lbs. (17,400 kg). The 24 and 33% respective increases in power for these two systems at cruise are translated to 15 and 20% improvement in fuel consumption over the LM2500 gas turbine at the higher power levels of the COGAS system. At the lower power levels, both COGAS systems yield a 20% improvement in fuel consumption over the basic gas turbine.
- Research Organization:
- David W. Taylor Research and Development Center, Bethesda, MD (USA)
- OSTI ID:
- 6963782
- Report Number(s):
- AD-A-173434/2/XAB; DTNSRCD-TM-27-80-19
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320304* -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Waste Heat Recovery & Utilization
BOILERS
CHEMICAL REACTIONS
COMBINED CYCLES
DIFFUSERS
ENERGY CONSUMPTION
ENERGY RECOVERY
ENERGY TRANSFER
EXHAUST GASES
FLUIDS
FUEL CONSUMPTION
GAS TURBINES
GASEOUS WASTES
GASES
HEAT RECOVERY
HEAT TRANSFER
HEATING
MACHINERY
POWER
RECOVERY
REDUCTION
STEAM TURBINES
THERMODYNAMIC CYCLES
TURBINES
TURBOMACHINERY
WALLS
WASTE HEAT BOILERS
WASTE HEAT UTILIZATION
WASTE PRODUCT UTILIZATION
WASTES
WEIGHT
320304* -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Waste Heat Recovery & Utilization
BOILERS
CHEMICAL REACTIONS
COMBINED CYCLES
DIFFUSERS
ENERGY CONSUMPTION
ENERGY RECOVERY
ENERGY TRANSFER
EXHAUST GASES
FLUIDS
FUEL CONSUMPTION
GAS TURBINES
GASEOUS WASTES
GASES
HEAT RECOVERY
HEAT TRANSFER
HEATING
MACHINERY
POWER
RECOVERY
REDUCTION
STEAM TURBINES
THERMODYNAMIC CYCLES
TURBINES
TURBOMACHINERY
WALLS
WASTE HEAT BOILERS
WASTE HEAT UTILIZATION
WASTE PRODUCT UTILIZATION
WASTES
WEIGHT