EXPERIMENTALLY-DETERMINED EXTERNAL HEAT LOSS OF AUTOMOTIVE GAS TURBINE ENGINE

An external heat balance was conducted on a 150 HP two-shaft automotive gas turbine engine. The engine was enclosed in a calorimeter box and the temperature change of cooling air passing through the box was measured. Cooling airflow ranges of 1.6 to 2.1 lb-per-second and 0.8 to 1.1 lb-per-second were used. The engine housing heat loss increased as the cooling airflow through the calorimeter box was increased, as would be the case in a moving automobile. The heat balance between the total energy input and the sum of shaft power output and various losses compared within 30 percent at engine idle speeds and within 7 percent at full power. (Author)

• Corporate Authors:

  Lewis Research Center

  National Aeronautics and Space Administration
  Cleveland, OH  United States  44135
• Authors:
  • Meng, P R
  • Wulf, R F
• Publication Date: 1975-4

Media Info

• Pagination: 36 p.

Subject/Index Terms

• TRT Terms: Air; Calorimeters; Cooling systems; Flow; Gas turbines; Gravimeters; Heat balance; Heat loss; Heat transfer; Performance tests; Turbine engines; Vehicle power plants
• Uncontrolled Terms: Air flow
• Old TRIS Terms: Air cooling; Automobile engines
• Subject Areas: Highways; Safety and Human Factors; Vehicles and Equipment;

Filing Info

• Accession Number: 00091868
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: NASA-TM-X-71709, E-8318
• Files: TRIS
• Created Date: Sep 10 1976 12:00AM