A Study of Waste-Heat-Boiler Size and Performance of a Conceptual Marine COGAS System.

reportActive / Technical Report | Accession Number: ADA173434 | Open PDF

Abstract:

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 38,3000 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. Keywords Waste-heat recovery, Waste-heat-boiler sizing, Gas turbine, Heat Transfer, and Steam bottoming cycle.

Author(s):
Muench, R. K. ; Knauss, D. T. ; Purnell, J. G.
Author Organization(s):
DAVID W TAYLOR NAVAL SHIP RESEARCH AND DEVELOPMENT CENTER BETHESDA MD
Descriptive Note:
Research and development rept.,
Pagination:
0031

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
DTNSRCD-TM-27-80-19
Task Number(s):
SF43432301
Project Number(s):
F43432
 Subject Terms
Joint Capability Areas:
JCA_4.1_Deployment and Distribution; JCA_5_Command and Control; JCA_4_Logistics; JCA_1.2.6_Concepts; JCA_5.3_Planning
Communities of Interest:
Energy and Power Technologies
Descriptor(s):
*GAS TURBINES, *HEAT RECOVERY, *STEAM TURBINES, *BOILERS, HEAT TRANSFER, HIGH POWER, LOW POWER, POWER LEVELS, TEMPERATURE, SIZES(DIMENSIONS), CYCLES, GASES, REDUCTION, HEATING, WEIGHT, PRESSURE, LOW LEVEL, YIELD, FUEL CONSUMPTION, WALLS, POWER, BOTTOM, EXHAUST GASES, FEED WATER, DIFFUSERS, MARINE ENGINES
Field(s)/Group(s):
Air Conditioning, Heating, Lighting and Ventilating, Marine Engineering
Keyword(s):
COGAS systems, Waste heat recovery, Waste heat boiler sizing, Waste heat boilers, PE62543N, WU12721152
Report Date:
1980 Feb 01