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reversible engine work done is minimum
That Qc is supplied by heat exchanger
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02. [HW] Textbook problem 6-160 (6 marks) A heat pump receives heat from a lake that...
A house uses a heat pump to maintain the indoor temperature at 22 C on a...
A house uses a heat pump to maintain the indoor temperature at 22 C on a cold winter day when the outside temperature is -10 C. On this day, the house receives heat from the heat pump at a rate of 24 kW. Is it possible for this heat pump to operate at 2.5 kW? Justify your answer.
6-104 A Camot heat pump is to be used to bcat a house and nutintain it...
6-104 A Camot heat pump is to be used to bcat a house and nutintain it at 25% in winter. On a day which the average outdoor temperature remains at about 2'C, the house is esti- mated to lose heat at a rate of 55,000 Jh. Iſ the heat pump consumes 4.8 kW of power while operating, determine (a) how long the heat pump ran on that day: (b) the toul heating costs, assuming an average price of 11e/kWh for...
A reversible heat engine receives heat of 2000 kJ from a furnace at temperature of 600...
A reversible heat engine receives heat of 2000 kJ from a furnace at temperature of 600 0C and rejects waste heat into the house. The portion of work produced by this heat engine utilized to drive a reversible heat pump to warmup the same house during the winter. The house is to be maintained at 21 0C at all times even though outside temperature drops to -15 0C. If the net-work output of the combined heat engine and heat pump...
Problem 3 A home in a Midwestern city is being heated with a heat pump in...
Problem 3 A home in a Midwestern city is being heated with a heat pump in a winter day where the outside temperature is 5 C. Due to poor insulation, the home loses 800 KW of heat to the outside surroundings. An space heater inside the room generates 150 KW and another 120 KW of heat is generated by all the appliances and people in the room. The home is desired to be maintained at 25°C The heat pump consumes...
Que.2a With suitable diagrams, describe the geothermal resource types 6 marks) b Show that the efficiency of a heat pump is higher in the heating mode than in the cooling mode. (2 marks) Que.2c A...
Que.2a With suitable diagrams, describe the geothermal resource types 6 marks) b Show that the efficiency of a heat pump is higher in the heating mode than in the cooling mode. (2 marks) Que.2c A heat pump is used to heat a house in the winter and cool it in the summer. The loads are 5000W in the winter with a house temperature of 20° C and 4000W in the summer with a house temperature of 25° C. Determine the...
A heat pump is used to heat a house and maintain it at 24°C. On a...
A heat pump is used to heat a house and maintain it at 24°C. On a winter day when the outdoor air temperature is -5°C (negative value), the house is estimated to lose heat at a rate of 80,000 kJ/h. Determine the minimum power required to operate this heat pump if heat is extracted from (a) the outdoor air at -4 oC and (b) the well water at 12C.
(12 pts) A heat pump operating on a cyclic process receives heat from a reservoir at...
(12 pts) A heat pump operating on a cyclic process receives heat from a reservoir at 500°C and rejects the waste heat at a rate of 30 kW to the ambient air at 300 K. If the work output of the engine is 45 kw, determine if the cycle is possible, and if the cycle is reversible. Explain with calculations. Show calculations using both efficiency (Method 1) and Entropy generation (Method 2) analysis.
US PRINTER VERSİON "ACKIC I Problem 5.044 SI A heat pump cycle is used to maintain...
US PRINTER VERSİON "ACKIC I Problem 5.044 SI A heat pump cycle is used to maintain the intenior of a building at 20°C. At steady state, the heat pump receives energy by 9eC and discharges energy by heat transfer to the building at a rate of 120,000 k/h. Over a period of 14 days, an electric meter records that 2000 kw-h of electricity is provided to the heat pump. Determine: (a) the amount of eneroy that the heat pump receives...
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...
In a vapor-compression refrigeration heat pump cycle with Refrigerant 134a as the working fluid provides heating...
In a vapor-compression refrigeration heat pump cycle with Refrigerant 134a as the working fluid provides heating at a rate of 15 kW to maintain a building at 20 °C year-round. During the heating mode in the winter, the outside temperature is 5 °C. It is also used for cooling in the summer when outside temperature is 34 °C. Saturated vapor at 2.4 bar leaves the evaporator and superheated vapor at 8 bar leaves the compressor. There is no significant heat...
6-104 A Camot heat pump is to be used to bcat a house and nutintain it at 25% in winter. On a day which the average outdoor temperature remains at about 2'C, the house is esti- mated to lose heat at a rate of 55,000 Jh. Iſ the heat pump consumes 4.8 kW of power while operating, determine (a) how long the heat pump ran on that day: (b) the toul heating costs, assuming an average price of 11e/kWh for...
Problem 3 A home in a Midwestern city is being heated with a heat pump in a winter day where the outside temperature is 5 C. Due to poor insulation, the home loses 800 KW of heat to the outside surroundings. An space heater inside the room generates 150 KW and another 120 KW of heat is generated by all the appliances and people in the room. The home is desired to be maintained at 25°C The heat pump consumes...
Que.2a With suitable diagrams, describe the geothermal resource types 6 marks) b Show that the efficiency of a heat pump is higher in the heating mode than in the cooling mode. (2 marks) Que.2c A heat pump is used to heat a house in the winter and cool it in the summer. The loads are 5000W in the winter with a house temperature of 20° C and 4000W in the summer with a house temperature of 25° C. Determine the...
(12 pts) A heat pump operating on a cyclic process receives heat from a reservoir at 500°C and rejects the waste heat at a rate of 30 kW to the ambient air at 300 K. If the work output of the engine is 45 kw, determine if the cycle is possible, and if the cycle is reversible. Explain with calculations. Show calculations using both efficiency (Method 1) and Entropy generation (Method 2) analysis.
US PRINTER VERSİON "ACKIC I Problem 5.044 SI A heat pump cycle is used to maintain the intenior of a building at 20°C. At steady state, the heat pump receives energy by 9eC and discharges energy by heat transfer to the building at a rate of 120,000 k/h. Over a period of 14 days, an electric meter records that 2000 kw-h of electricity is provided to the heat pump. Determine: (a) the amount of eneroy that the heat pump receives...
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...
In a vapor-compression refrigeration heat pump cycle with Refrigerant 134a as the working fluid provides heating at a rate of 15 kW to maintain a building at 20 °C year-round. During the heating mode in the winter, the outside temperature is 5 °C. It is also used for cooling in the summer when outside temperature is 34 °C. Saturated vapor at 2.4 bar leaves the evaporator and superheated vapor at 8 bar leaves the compressor. There is no significant heat...
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