Diesel Engine Efficiency An engine operates on an ideal Diesel cycle with a compression ratio of 16:1. The temperature of air at the start of the compression is 27 °C. If the maximum engine temperature is 1473 °C, determine the thermal efficiency of this engine in [%]. (Note that isentropic constant for air is y = 1.4).
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- A heat engine provides a net power output of 14 kW and has an efficiency of 23 %. The engine rejects 1200 J of energy per cycle to a low temperature reservoir. a)Determine the amount of heat delivered to the engine from the high temperature reservoir per second. Your answer should be in units of Watts. b)Determine the required number of cycles per minute executed.part 1 of 2 A Carnot engine has a power output of 72 kW. The engine operates between two reservoirs at 20°C and 286°C. How much thermal energy is absorbed each hour? Answer in units of J. part 2 of 2 How much thermal energy is lost per hour? Answer in units of J. Y Yo i9 PM Thu Apr 29 Problem 1 Unanswered Consider n moles of a monatomic ideal gas that goes through the reversible cycle abca shown in the pV diagram. What is the change in internal energy AUin going from c to a along the curved path? 9 -PoVo A 13 B - PoVo 21 - PoVo 24 -PoVo 2po Po as Vo 4Vo
- 5:59 PM Thu Apr 29 L 40% O Submit Problem 2 Unanswered An engine runs with an intake temperature of TH = 450K and exhaust temperature of Tc = 300K. The engine's manufacturer claims the engine has an efficiency of 30%. Which of the following statements is correct?- The claimed efficiency is bogus because it violates the 2nd law of A thermodynamics. The claimed efficiency does not violate the 2nd law of thermodynamics. Submit1 mole of monatomic ideal gas initially at a volume of 2 L and a pressure of 10 atm is processed through a cycle where it first expands isothermally and reversibly to a final pressure of 2.5 atm, is then reversibly and isochorically cooled to a final temperature of 97.32 K, and then is reversibly and adiabatically compressed back to the initial state. 1. Determine the total work for the cycle 2. Determine change in internal energy for the cycleRequired information Problem 09.112 - Brayton Cycle with Regeneration using Variable Specific Heats - DEPENDENT MULTI- PART PROBLEM - ASSIGN ALL PARTS A Brayton cycle with regeneration using air as the working fluid has a pressure ratio of 7. The minimum and maximum temperatures in the cycle are 310 and 1150 K. Assume an isentropic efficiency of 75 percent for the compressor and 82 percent for the turbine and an effectiveness of 64 percent for the regenerator. Use variable specific heats for air. Problem 09.112.a - Air Temperatre of the Turbine Exit in a Brayton Cycle with Regeneration Determine the air temperature at the turbine exit. (You must provide an answer before moving on to the next part.) The air temperature at the turbine exit is K.