1.A Carnot air conditioner keeps the temperature in a house at 297 K on a day...
1.A Carnot air conditioner keeps the temperature in a house at 297 K on a day where the outside temperature is 311 K. What is the coefficient of performance of this air conditioner?
2.A Carnot engine has an efficiency of 22.0%. It is operating between two reserves at constant temperature that differ by 750C. What is the minimum temperature (TL) and the maximum temperature (TH)?
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1.A Carnot air conditioner keeps the temperature in a house at
297 K on a day...
An ideal Camot engine is operated as an air conditioner to cool a house in the...
An ideal Camot engine is operated as an air conditioner to cool a house in the summer. The air conditioner removes 14 kJ of heat per second from the house, and maintains the inside temperature at 293 K while the outside temperature is 369 K. The power required to run the air conditioner under these operating conditions is closest to OA. 5800 W OB. 4400 W OC. 6600 W OD. 5100 W O E 3600 W
An Air conditioner maintains a house temperature of 23C while outside temp is 50C. If gbe...
An Air conditioner maintains a house temperature of 23C while outside temp is 50C. If gbe refrigeration cycle removes 8kw from the house and compressor does 2 hp of work on the refrigerent. determine 1. the heat rejected to the outside environment in kw? 2. the actual coefficient of performance for A/C unit 3. the max possible cop
An air conditioner is used to maintain a house at 400C when the temperature outside is...
An air conditioner is used to maintain a house at 400C when the temperature outside is 850C. The house gains heat through the walls and the windows at a rate of 2130kJ/kg/min, and heat generation rate within the house from people, lights and appliances amounts to 120kJ/min. Determine the minimum power required for the air conditioner and cost of its operation over a three month summer at a rate of $0.15Kw Hr.
A window air conditioner uses 1307 W of electricity and has a coefficient of performance of...
A window air conditioner uses 1307 W of electricity and has a coefficient of performance of 2.75. For simplicity, let's assume that all of that electrical energy is transformed into work done by the air conditioner to cool a room with dimensions of 7 m x 7 m x 3 m. The air inside this room will initially have the same temperature as the air outside (319 K) and the air conditioner will attempt to cool the room to 295...
Question 1 (10 marks) As shown in Fig. Q1, a house is cooled by an air...
Question 1 (10 marks) As shown in Fig. Q1, a house is cooled by an air conditioning system to maintain the temperature inside the house to be 25 °C during the summer. When the ambient temperature outside is 45 °C, the rate at which heat is transferred to the house is estimated to be Qleak .u HP 30 kW 1.1 Calculate the coefficient of performance (COP) of this air conditioning system if it operates on a Carnot cycle? Fig. Q1...
QS. An air-conditioner with a power input of 1.5 kW is working as a refrigerator (B-3) or as a heat pump (B' 4). It...
QS. An air-conditioner with a power input of 1.5 kW is working as a refrigerator (B-3) or as a heat pump (B' 4). It maintains an office at 20C year round which exchanges 0.5 kW per degree temperature difference with the atmosphere. There is a range of the outside temperatures for which this unit is sufficient a) Write the expressions that define the coefficient of performance (COP) for a refrigerator (B) and a heat pump (B) b) Calculate the maximum...
Probleml An air comditionot with R-134m as the working laido maintains a house at a constant...
Probleml An air comditionot with R-134m as the working laido maintains a house at a constant temperature of 25 0C durisg the summer. The minumats temperdiure in the air conditioner cycle is-S°C, and the maximum temperatire in the air conditioner cycle is eqaivalent to the outside tempcrature. The house gains beat froth the walls and windows at 95,000 kJh when the outside temperature is 35 C, and the people, lighits, and appliances in the house geoerate 7,000 kJh What is...
The pressure of air in your house can stay constant during the day if the temperature...
The pressure of air in your house can stay constant during the day if the temperature rises. Let the temperatures be 295 K during the day, and 288 K at night, and volume of the house be 900 m3. Determine the number of moles of air that leave the house during the daytime.
A car air conditioner operating with R-134a as working fluid has a minimum temperature of -10°C...
A car air conditioner operating with R-134a as working fluid has a minimum temperature of -10°C and a maximum pressure of 1 MPa. The actual adiabatic compressor exit temperature is 50°C. Heat is rejected in the condenser to ambient air at 27°C. Assume no pressure loss in the heat exchangers. Find the specific heat transfer from the cold space and that to the hot space, the COP, and the isentropic efficiency of the compressor. Also, determine the exergy destroyed in...
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...
An ideal Camot engine is operated as an air conditioner to cool a house in the summer. The air conditioner removes 14 kJ of heat per second from the house, and maintains the inside temperature at 293 K while the outside temperature is 369 K. The power required to run the air conditioner under these operating conditions is closest to OA. 5800 W OB. 4400 W OC. 6600 W OD. 5100 W O E 3600 W
Question 1 (10 marks) As shown in Fig. Q1, a house is cooled by an air conditioning system to maintain the temperature inside the house to be 25 °C during the summer. When the ambient temperature outside is 45 °C, the rate at which heat is transferred to the house is estimated to be Qleak .u HP 30 kW 1.1 Calculate the coefficient of performance (COP) of this air conditioning system if it operates on a Carnot cycle? Fig. Q1...
QS. An air-conditioner with a power input of 1.5 kW is working as a refrigerator (B-3) or as a heat pump (B' 4). It maintains an office at 20C year round which exchanges 0.5 kW per degree temperature difference with the atmosphere. There is a range of the outside temperatures for which this unit is sufficient a) Write the expressions that define the coefficient of performance (COP) for a refrigerator (B) and a heat pump (B) b) Calculate the maximum...
Probleml An air comditionot with R-134m as the working laido maintains a house at a constant temperature of 25 0C durisg the summer. The minumats temperdiure in the air conditioner cycle is-S°C, and the maximum temperatire in the air conditioner cycle is eqaivalent to the outside tempcrature. The house gains beat froth the walls and windows at 95,000 kJh when the outside temperature is 35 C, and the people, lighits, and appliances in the house geoerate 7,000 kJh What is...
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...
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