A gasoline engine with a thermal efficiency of 39 % has a power output of 50...
Let's begin with an efficiency analysis of a gasoline engine. The engine in a large truck takes in 2500 J of heat and delivers 500 J of mechanical work per cycle. The heat is obtained by burning gasoline with heat of combustion Le = 5.0 x 104 J/g. (a) What is the thermal efficiency of this engine? (b) How much heat is discarded in each cycle? (c) How much gasoline is burned during each cycle? (d) If the engine goes...
A gasoline engine has a power output of 170 kW (about 2.28×105 hp ). Its thermal efficiency is 22.0 %. 1- How much heat must be supplied to the engine per second? Express your answer in joules per second. 2-How much heat is discarded by the engine per second? Express your answer in joules per second.
Constants Part A A gasoline engine has a power output of 175 kW (about 2 34-105 hp) Its thermal efficiency is 32.0 % How much heat must be supplied to the engine per second? 5.3 1081 Submit Previous Answers Request Answer incorrect; Try Again: 2 attempts remaining Part B How much heat is discarded by the engine per second? J/s Submit
Problem 1 The work output (1000 kJ) and thermal efficiency of a Carnot heat engine (50%) are given. The heat supplied to the heat engine, the heat rejected and the temperature of heat sink are to be determined 1200 C Qn 5096 HE1000 kJ sink
A gasoline engine in a large truck takes in 10,000 J of heat and deliver 2,000 J of mechanical work. per cycle. The heat is obtained by burning gasoline with heat of combustion L-5.0 10* J/g. Heat of combustion of gasoline is how much energy gasoline produces by combustion per g.(20 points) a) What is the thermal efficiency of this engine? (4 points) b) How much heat is discard in each cycle? (4 points) c) How much gasoline is burned...
A car engine whose output power is 145 hp operates at about 16 % efficiency. Assume the engine's water temperature of 79 ∘C is its cold-temperature (exhaust) reservoir and 495 ∘C is its thermal "intake" temperature (the temperature of the exploding gas-air mixture). What is the ratio of its efficiency relative to its maximum possible (Carnot) efficiency? Estimate how much power (in watts) goes into moving the car. How much heat, in joules and in kcal, is exhausted to the...
The indicated thermal efficiency of a two stroke diesel engine is 60%. If the friction power is 15% of the heat generated, determine the brake thermal efficiency of the engine. Answer : 45% show complete solution.
A four-cylinder gasoline engine has an efficiency of 28 % and delivers 280 J of work per cycle per cylinder. A) If the engine runs at 25 cycles per second (1500 rpm), determine the work done per second. B)What is the total heat input per second from the gasoline. C) If the energy content of gasoline is 130 MJ per gallon, how long does one gallon last?
A Carnot engine has a power output of 167 kW. The engine operates between two reservoirs at 29◦C and 207◦C. A) How much thermal energy is absorbed each hour? Answer in units of J. B) How much thermal energy is lost per hour? Answer in units of J.
Part 1 of 2 A Carnot engine has a power output of 65 kW. The engine operates between two reservoirs at 25 degrees Celsius and 253 degrees Celsius. 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.