A thermal efficiency of a combustion chamber valued equal to 73.15% with heat supplied to the system equal to 125 BTU. Calculate the net work produced in KJoules? 85.546 Kjoules 91.895 Kjoules 102.346 Kjoules 212.751 Kjoules
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- The combustion chamber of a diesel power plant has a theoretical heat value of 102 K Joules in a 98 25% combustion efficiency. What is the actual heat released in the systern in BTU? 90.44 BTU 94.99 BTU 98.55 BTU 99.98 BTU30. A cylinder contains an amount of gas. At pressure of 470 kPa and at temperature of 27 ̊C, thegas occupies a volume of 0.03 m3. It is then compressed according to Boyle’s law until its pressureis 1.3 MPa, and then expanded according to Charles’ Law until its volume is 0.02 m3. Calculate thefinal temperature of the gas. a. 292.35000C b. 248.85000C c. 216.22500C d. 280.31810CA piston cylinder arrangement initially contains 7.0 kgs of super- heated steam at 500 kPa and 250 C, now heat is removed until 44% condenses. 1) What is the amount of heat removed in (kJ)? 13935.32 11152.41 10432.49 7472.29 8357.65 6817.34 Not listed 12703.96 • 9243.01 2) What is the final volume (m )? O0.8448 1.0018 1.6297 1.2634 1.7866 1.1588 1.3681 1.4727 Not listed
- A diesel power plant has an overall efficiency of 30%. If the calorific value of diesel is 18000 BTU/lb and cost P6.000 per liter, how much is the fuel cost of production per KWHR of energy? Take the density of diesel as 900 grams per liter. A. P1.91/KWHR B. P1.85/KWHR C. P2.12/KWHR D. P2.45/KWHRA Boeing 767 due to fly from Montreal to Edmontonrequired refueling. Because the fuel gauge on the aircraft was not working, a mechanic used a dipstick todetermine that 7682 L of fuel were left on the plane.The plane required 22,300 kg of fuel to make the trip. Inorder to determine the volume of fuel required, thepilot asked for the conversion factor needed to converta volume of fuel to a mass of fuel. The mechanic gavethe factor as 1.77. Assuming that this factor was in metric units the pilot calculated the volume to beadded as 4916 L. This volume of fuel was added andthe 767 subsequently ran out the fuel, but landed safelyby gliding into Gimli Airport near Winnipeg. The errorarose because the factor 1.77 was in units of pounds perliter. What volume of fuel should have been added?A piston cylinder arrangement initially contains 7.0 kg of super-heated steam at 100 kPa and 250 oC, now heat is removed until 0.58 condenses. 1) What is the amount of heat removed in (kJ)? 12210 10946 11262 11736 11894 Not listed 2) What is the final volume (m3)? 4.9847 Not listed 4.5108 5.2220 4.2735 4.7479
- b) For an Otto Engine the temperature at the end of combustion is 280 K. If the temperature in the gas side and coolant side of the wall are 177 °C and 127 °C and cylinder wall thickness is 5 mm;28. The edges of a cast iron block weighing 32 kg were rounded off with a mill. When the block was reweighed, it was found to weigh only 29,5 kg. What percentage of the original cast iron block was lost? A. 7.8% В. 8.5% С. 3.4% D. 2.5% 29. If 3.5 L of used oil were to be disposed of each week over a three-year period, the total number of liters disposed of at the end of this time, assuming there are 52 weeks in a year, would be A. 495 L В. 546 LA diesel electric plant supplies energy by Meralco. During a 24 hour period, the plant consumed 200 gallons of fuel at 28 deg. C and produced 3930 kw-hr. Industrial fuel used is 28 degree API and was purchased at 5.50 per liter at 15.6 deg. C. What should be the cost of fuel to produce 1 kw-hr? a. 1.10 b. 1.05 c. 1.69 d. 1.00
- A piston cylinder arrangement initially contains 7.0 kg of super-heated steam at 100 kPa and 250 C, now heat is removed until 0.62% condenses. 1) What is the amount of heat removed in (kJ)? 11262 10946 11894 12210 None of the above 2) What is the final volume (m")? 4.2735 4.5108 4.9847 5.222 None of the aboveIf 250(ft)3(s) of air at 122(°F) and approximately atmospheric pressure is preheated for a combustion process to 932(°F), what rate of heat transfer is required?29. A cylinder contains an amount of gas. At pressure of 460 kPa and at temperature of 27'C, the gas occupies a volume of 0.08 m³. It is then compressed according to Boyle's law until its pressure is 1.2 MPa, and then expanded according to Charles' Law until its volume is 0.05 m³. Calculate the final temperature of the gas. a. 292.3500°C b. 248.8500°C c. 216.2250°C d. 280.3181°C