The shop test of a single-acting, 8" x 12" engine whose record is hereby reported was made for the heat bala Engine: Indicated mean effective pressure = 155 psi Speed = 720 rpm Mechanical efficiency = 80% No. of cylinder:6 No. of stroke:4 Cooling water: Capacity of cooling pump = 98 gpm Temperature of inlet water = 131 F Temperature of outlet water = 152 F Fuel: Fuel oil: C12H30 Fuel temperature = 75 F Hydrometer test of fuel oil, SG = 0.945 Gas: Exhaust loss = 15,000 Btu/min Temperature of exhaust gas = 752 F Specific heat of exhaust gas = 0.26 Btu/lb-F Temperature of air = 80 F Radiation, friction and unaccounted for loss = 2000 Btu/min Calculate the percent excess air (%) reguired by the engine.
The shop test of a single-acting, 8" x 12" engine whose record is hereby reported was made for the heat bala Engine: Indicated mean effective pressure = 155 psi Speed = 720 rpm Mechanical efficiency = 80% No. of cylinder:6 No. of stroke:4 Cooling water: Capacity of cooling pump = 98 gpm Temperature of inlet water = 131 F Temperature of outlet water = 152 F Fuel: Fuel oil: C12H30 Fuel temperature = 75 F Hydrometer test of fuel oil, SG = 0.945 Gas: Exhaust loss = 15,000 Btu/min Temperature of exhaust gas = 752 F Specific heat of exhaust gas = 0.26 Btu/lb-F Temperature of air = 80 F Radiation, friction and unaccounted for loss = 2000 Btu/min Calculate the percent excess air (%) reguired by the engine.
Refrigeration and Air Conditioning Technology (MindTap Course List)
8th Edition
ISBN:9781305578296
Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson
Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson
Chapter23: Compressors
Section: Chapter Questions
Problem 15RQ: State the main advantage that a discus compressor's valve plate design has over a conventional...
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