An automobile engine with an efficiency 0.30 dumps heat to the environment at the rate of...

Question

Question

An automobile engine with an efficiency 0.30 dumps heat to the environment at the rate of 280 kW .

What's its mechanical power output in W ?

What's its mechanical power output in hp ?

Answer 1

Similar Homework Help Questions

Let's begin with an efficiency analysis of a gasoline engine. The engine in a large truck...

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 particular heat engine has a mechanical power output of 5.20 kw and an efficiency of...

A particular heat engine has a mechanical power output of 5.20 kw and an efficiency of 26.0%. The engine expels 8.20 x 10-J of exhaust energy in each cycle. (a) Find the energy taken in during each cycle kJ (b) Find the time interval for each cycle.
A heat engine operating between 30°C and 450°C has 22 % of maximum possible efficiency. If...

A heat engine operating between 30°C and 450°C has 22 % of maximum possible efficiency. If its power output is 125 kW, at what rate does the engine absorb heat?

(a Calculate the rate of heat transfer in w by radiation from a car radiator at...

(a Calculate the rate of heat transfer in w by radiation from a car radiator at 106°С ınto a 48 C en ronment, f the radiator, has an emissi of a 750 and a .35 m surface area. t (b) Is this a significant fraction of the heat transfer by an automobile engine? To answer this, assume a horsepower of 200 hp (150 kW) and the efficiency of automobile engines as 25%. @ No, this is between 1% and 5%...
A heat engine has thermal efficiency of 38%. It rejects heat to a cooling body at...

A heat engine has thermal efficiency of 38%. It rejects heat to a cooling body at a rate of 550 kW. What is the rate at which heat is transferred into the engine (kW)?
21 A Carnot heat engine receives heat from a reservoir at 700°C at a rate of...

21 A Carnot heat engine receives heat from a reservoir at 700°C at a rate of 6 MW and rejects the waste heat to the ambient at 300 K, as shown in the figure. The entire net power output of the heat engine is used to drive a Carnot refrigerator that removes heat from the cold medium at -10°C and transfers it to the same ambient at 300 K. Determine:35235333333 a) The thermal efficiency of the heat engine. b) The...

1. A Carnot engine has a hot reservoir at 250 degrees C, and a a cold...

1. A Carnot engine has a hot reservoir at 250 degrees C, and a a cold reservoir at 25.0 degrees C. What is the efficiency of this engine? A) 10% B) 43% C) 57% D) 90% 2. A heat engine does 50 J of work and dumps 30 J of heat into the cold reservoir. How much heat was absorbed from the hot reservoir? A) 20 J B) 30 J C) 50 J D) 80 J 3. A heat engine...
A gasoline engine with a thermal efficiency of 39 % has a power output of 50...

A gasoline engine with a thermal efficiency of 39 % has a power output of 50 hp. How much heat must be supplied per second to the engine? Express your answer in kilojoules.
7. A heat engine has one-third the thermal efficiency of a Carnot engine operating between temperatures...

7. A heat engine has one-third the thermal efficiency of a Carnot engine operating between temperatures of 90 °C and 410 °C. If the heat engine absorbs heat at a rate of 54.0 kW, at what rate is heat exhausted?

A gasoline engine has a power output of 170 kW (about 2.28×105 hp ). Its thermal...

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.