A certain heat pump operates on a reverse Carnot cycle, heating the interior of a house...
A certain heat pump operates on a reverse Carnot cycle, heating the interior of a house to 26 degrees C, while the exterior temperature is -2 degrees C.
a) What is the coefficient of performance for this heat pump?
b) If the house loses 100 kJ per hour to the exterior, how much power is required to run the heat pump?
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A certain heat pump operates on a reverse Carnot cycle, heating
the interior of a house...
SP3. A Carnot engine operating in reverse as a heat pump moves heat from a cold...
SP3. A Carnot engine operating in reverse as a heat pump moves heat from a cold reservoir at 7°C to a warmer one at 22°C. a) What is the efficiency of a Carnot engine operating between these two temperatures? b) If the Carnot heat pump releases 250 J of heat into the higher-temperature reservoir e co in each cycle, how much work must be provided in each cycle? c) How much heat is removed from the 7°C reservoir in each...
5, (25 points) A Carnot heat pump is used to maintain a house at 20 °C...
5, (25 points) A Carnot heat pump is used to maintain a house at 20 °C in winter and consumes 8 kW of power (electricity) when operating. On a day temperature outside the house is -3 °C, the house is estimated to lose heat at an average rate of 80,000 kJ/h. (Sa). (2p) Please identify the hot reservoir and the cool reservoir of this heat pump. (5b). (2p) Please draw of schematic diagram of this heat pump-house heating system with...
E A heat pump operates on a reversed Carnot cycle with a COP of 7.7. If...
E A heat pump operates on a reversed Carnot cycle with a COP of 7.7. If it keeps a -pace at 25 C by consuming 9.6 kW of power. a. Determine the temperature of the reservoir from which the heat is absorbed, b. Determine the heating load provided by the heat pump. 6 Draw the energy flow diagram of the heat pump. d. Determine the actual COP if its irreversibility is 17 kW. e Determine the second law efficiency of...
V6.23 Figure P6.23 shows a Carnot heat pump cycle operating at steady state with ammonia as...
V6.23 Figure P6.23 shows a Carnot heat pump cycle operating at steady state with ammonia as the working fluid. The condenser tem perature is 49°C, with saturated vapor entering and saturated liquid exiting. The evaporator temperature -12°C a. Determine the heat transfer and work for each process, in kJ/kg of ammonia flowing. o56, 73 kJ b. Evaluate the coefficient of performance for the heat pump. 5, c. Evaluate the coefficient of performance for a Carnot refrigeration cycle operating as shown...
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?
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
To make ice, a freezer that is a reverse Carnot engine extracts 42 k) as heat...
To make ice, a freezer that is a reverse Carnot engine extracts 42 k) as heat at -13°C during each cycle, with coefficient of performance 6.0. The room temperature is 29.9°C. How much (a) energy per cycle is delivered as heat to the room and (b) work per cycle is required to run the freezer? (a) Number Units (b) Number Units Click if you would like to Show Work for this question: Open Show Work
4. A refrigeration unit operates in an inverted Carnot cycle. It receives from the surroundings (at...
4. A refrigeration unit operates in an inverted Carnot cycle. It receives from the surroundings (at 27°C) 10,000 kcal per hour. If the temperature inside the unit must be kept at -50°C, what is the power of the unit's engine (recall that power is P = W/t)? A Carnot engine is an idealized, reversible engine. In real life, it is found that you need to use an engine capable of producing 5.50 kW to run this unit. Express the efficiency...
A heat pump is to be used to heat a house in winter and then reversed...
A heat pump is to be used to heat a house in winter and then
reversed to cool the house in summer. The interior space is to be
maintained at 20oC. Heat transfer through walls and roof is
estimated to be χ = 0.525 kJ/sec per degree difference in
temperature between inside and outside. (6a) (8p) In winter if the
outside temperature is 5oC, what is the minimum power required to
drive the heat pump? (6b) (12p) For the same...
SP3. A Carnot engine operating in reverse as a heat pump moves heat from a cold reservoir at 7°C to a warmer one at 22°C. a) What is the efficiency of a Carnot engine operating between these two temperatures? b) If the Carnot heat pump releases 250 J of heat into the higher-temperature reservoir e co in each cycle, how much work must be provided in each cycle? c) How much heat is removed from the 7°C reservoir in each...
5, (25 points) A Carnot heat pump is used to maintain a house at 20 °C in winter and consumes 8 kW of power (electricity) when operating. On a day temperature outside the house is -3 °C, the house is estimated to lose heat at an average rate of 80,000 kJ/h. (Sa). (2p) Please identify the hot reservoir and the cool reservoir of this heat pump. (5b). (2p) Please draw of schematic diagram of this heat pump-house heating system with...
E A heat pump operates on a reversed Carnot cycle with a COP of 7.7. If it keeps a -pace at 25 C by consuming 9.6 kW of power. a. Determine the temperature of the reservoir from which the heat is absorbed, b. Determine the heating load provided by the heat pump. 6 Draw the energy flow diagram of the heat pump. d. Determine the actual COP if its irreversibility is 17 kW. e Determine the second law efficiency of...
V6.23 Figure P6.23 shows a Carnot heat pump cycle operating at steady state with ammonia as the working fluid. The condenser tem perature is 49°C, with saturated vapor entering and saturated liquid exiting. The evaporator temperature -12°C a. Determine the heat transfer and work for each process, in kJ/kg of ammonia flowing. o56, 73 kJ b. Evaluate the coefficient of performance for the heat pump. 5, c. Evaluate the coefficient of performance for a Carnot refrigeration cycle operating as shown...
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
To make ice, a freezer that is a reverse Carnot engine extracts 42 k) as heat at -13°C during each cycle, with coefficient of performance 6.0. The room temperature is 29.9°C. How much (a) energy per cycle is delivered as heat to the room and (b) work per cycle is required to run the freezer? (a) Number Units (b) Number Units Click if you would like to Show Work for this question: Open Show Work
4. A refrigeration unit operates in an inverted Carnot cycle. It receives from the surroundings (at 27°C) 10,000 kcal per hour. If the temperature inside the unit must be kept at -50°C, what is the power of the unit's engine (recall that power is P = W/t)? A Carnot engine is an idealized, reversible engine. In real life, it is found that you need to use an engine capable of producing 5.50 kW to run this unit. Express the efficiency...
A heat pump is to be used to heat a house in winter and then
reversed to cool the house in summer. The interior space is to be
maintained at 20oC. Heat transfer through walls and roof is
estimated to be χ = 0.525 kJ/sec per degree difference in
temperature between inside and outside. (6a) (8p) In winter if the
outside temperature is 5oC, what is the minimum power required to
drive the heat pump? (6b) (12p) For the same...
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