A heat pump has a coefficient of performance of 3.1. Hint   If it requires 290 J of work per cycle, how much heat per cycle does it put into the hot reservoir? QH=QH= JJ How much heat per cycle is pulled in from the cold reservoir? QL=QL= J

A heat pump removes 2060 J of heat from the outdoors and delivers 3060 J of heat to the inside of a house. (a) How much work does the heat pump need?(b) What is the coefficient of performance of the heat pump?

In each cycle of its operation, a refrigerator removes 13 J of heat from the inside of the refrigerator and releases 36 J of heat into the room. How much work per cycle is required to operate this refrigerator?   J

The heat machine receives 1200 J of heat from high-temperature heat source and re lease the heat of 900 Ĵ to low tenperatuve hent sovrce in each Y ound Que sion : Find the of machine if each cycle takes 0.2 S. Angwer a) 60o0 w 67 4500 c) 60 W d) 1500 w F) 240 W 92 180 W

A large electrical power station generates 1400 MW of electricity with an efficiency of 31 %. a) How much heat does the power station need to generate this amount of electricity in one day? Qn = b) How much heat is exhausted to the environment in one day? Qc = J c) The exhaust heat is transferred to the ambient air at 15 °C. What is the change in entropy of the surrounding air in one day? AS = J/K %3D d) The heat driving the generators is in the form of superheated steam at 260 °C. If a Carnot engine had been used instead, what would it's efficiency be? Efficiency = e) How much work was lost (left undone) because a Carnot engine was not used? WCarnot Wactual = %3D

An engine absorbs 500 J of heat and reject 100 J of heat to cold reservoir in each cycle.  What is its efficiency? From the last question, how much work does the engine do in three cycles?

heat pump operates on a Carnot cycle between the cool exterior of a house and the warminterior. When the exterior temperature is 2.0 °C and the interior temperature is 20.0 °C.a) What is the coefficient of performance for the heat pump?b) The heat pump delivers 63 MJ of energy to the interior of the house. How much energy input isrequired in the form of work?

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.

A heat engine takes in 400 J of energy from a hot reservoir and performs 21.0 J of work in each cycle. (a) Find the efficiency of the engine._________ %(b) Find the energy expelled to the cold reservoir in each cycle. __________J

1. a) A heat engine with an efficiency of 25% does 600 J of work in each cycle. How much heat must be supplied from the high-temperature source in each cycle?  b) A heat engine with an efficiency of 40% takes in 800 J of heat from the high-temperature reservoir in each cycle. How much work does the engine do in each cycle? How much heat is released to the low-temperature reservoir?