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...
icon
Related questions
Question
The shop test of a single-acting, 8" x 12" engine whose record is hereby reported was made for the heat balance.
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 (%) required by the engine.
Transcribed Image Text:The shop test of a single-acting, 8" x 12" engine whose record is hereby reported was made for the heat balance. 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 (%) required by the engine.
The shop test of a single-acting, 8" x 12" engine whose record is hereby reported was made for the heat balance.
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 (%) required by the engine.
Transcribed Image Text:The shop test of a single-acting, 8" x 12" engine whose record is hereby reported was made for the heat balance. 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 (%) required by the engine.
Expert Solution
steps

Step by step

Solved in 2 steps

Blurred answer
Knowledge Booster
IC Engines
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
Refrigeration and Air Conditioning Technology (Mi…
Refrigeration and Air Conditioning Technology (Mi…
Mechanical Engineering
ISBN:
9781305578296
Author:
John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson
Publisher:
Cengage Learning