A heat pump is used to heat a building. The external temperature is lower than the...
A heat pump is used to heat a building. The external temperature is lower than the internal temperature. The pump's coefficient of performance is 4.20, and the heat pump delivers 4.16 MJ as heat to the building each hour. If the heat pump is a Carnot engine working in reverse, at what rate must work be done to run it?
Homework Answers
COP = DESIRED EFFECT / WORK INPUT
4.2 = ( 4.16*1000000/3600)/ RATE OF WORK INPUT
RATE OF WORK INPUT = 275 W . Ans
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A heat pump is used to heat a building. The external temperature
is lower than the...
A heat pump is used to heat a building. The external temperature is lower than the...
A heat pump is used to heat a building. The external temperature is lower than the internal temperature. The pump's coefficient of performance is 3.74, and the heat pump delivers 5.39 MJ as heat to the building each hour. If the heat pump is a Carnot engine working in reverse, at what rate must work be done to run it?
A heat pump is used to heat a building. The external temperature is lower than the...
A heat pump is used to heat a building. The external temperature is lower than the internal temperature. The pump's coefficient of performance is 3.61, and the heat pump delivers 7.34 M) as heat to the building each hour. If the heat pump is a Carnot engine working in reverse, at what rate must work be done to run it? Number Units
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earning Goal: To understand that a heat engine run backward is a heat pump that can be used as a refrigerator....
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A certain heat pump operates on a reverse Carnot cycle, heating the interior of a house...
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4. A refrigeration unit operates in an inverted Carnot cycle. It receives from the surroundings (at...
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V6.23 Figure P6.23 shows a Carnot heat pump cycle operating at steady state with ammonia as...
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A heat pump is capable of delivering more energy to the home than goes into the...
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A heat pump is used to heat a building. The external temperature is lower than the internal temperature. The pump's coefficient of performance is 3.61, and the heat pump delivers 7.34 M) as heat to the building each hour. If the heat pump is a Carnot engine working in reverse, at what rate must work be done to run it? Number Units
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6. An office building requires a heat transfer rate of 20 kW to maintain the inside temperature at 21°C when the outside temperature is 0°C. A vapor-compression heat pump with Refrigerant 134a as the working fluid is to be used to provide the necessary heating. The compressor operates adiabatically with an isentropic efficiency of 82%. Specify appropriate evaporator and condenser pressures of a cycle for this purpose assuming Δ1cond-Al evap-10°C, as shown below. The states are numbered as shown below....
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