INITIAL TEST RESULTS WITH A SINGLE-CYLINDER RHOMBIC-DRIVE STIRLING ENGINE
A 6 kW (8 hp), single-cylinder, rhombic-drive Stirling engine was restored to operating condition, and preliminary characterization tests run with hydrogen and helium as the working gases. Initial tests show the engine brake specific fuel consumption (BSFC) with hydrogen working gas to be within the range of BSFC observed by the Army at Fort Belvoir, Virginia, in 1966. The minimum system specific fuel consumption (SFC) observed during the initial tests with hydrogen was 669 g/kW hr (1.1 lb/hpx hr), compared with 620 g/kWx hr (1.02 lb/hpx hr) for the Army tests. However, the engine output power for a given mean compression-space pressure was lower than for the Army tests. The observed output power at a working-space pressure of 5 MPa (725 psig) was 3.27 kW (4.39 hp) for the initial tests and 3.80 kW (5.09 hp) for the Army tests. As expected, the engine power with helium was substantially lower than with hydrogen.
Department of the NavyThe Pentagon
Washington, DC United States 20350
- Cairelli, J E
- Thieme, L G
- Walter, R J
- Publication Date: 1978-7
- Pagination: 42 p.
- TRT Terms: Energy; Energy conservation; Engines; Equipment tests; Fuel consumption; Helium; Hydrogen; Performance tests; Stirling engines; Technology; Vehicle design; Vehicle power plants
- Old TRIS Terms: Automobile engines; Energy technology; Engine design; Engine tests; Stirling cycle
- Subject Areas: Design; Energy; Environment; Highways; Vehicles and Equipment;
- Accession Number: 00186550
- Record Type: Publication
- Source Agency: National Technical Information Service
- Report/Paper Numbers: NASA-TM-78919 Final Rpt.
- Contract Numbers: EC-77-A-31-1040
- Files: TRIS
- Created Date: Feb 27 1979 12:00AM