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.
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An air conditioner is used to maintain a house at
400C when the temperature outside is...
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...
Please show all equations needed in answer and please specify which thermodynamics table is used for...
Please show all
equations needed in answer and please specify which thermodynamics
table is used for what values taken from any tables
Waeer 2C 12 MMP 25 c Problem I: 12 MP An air conditioner with R-134a as the working fluid maintains a house at a constant temperature of 23°C during the summer. The minimum temperature in the air conditioner cycle is -8°C, and the maximum temperature in the air conditioner cycle is equivalent to the outside temperature. The house...
(d) Figure Q3 shows an air-conditioner is used to maintain a house at 15 °C by...
(d) Figure Q3 shows an air-conditioner is used to maintain a house at 15 °C by removing the heat from the house to the outside air at a temperature of 30 °C. The house is estimated to gain heat at a rate of 200,000 kJ/h. The air- conditioner consumes 5 kW of electric power when running. Analyse if the air-conditioner is powerful enough to perform the task. (10 marks) [Total : 25 marks] Air- cond 30 °C 15 °C 200,000...
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...
6-108 An air-conditioner with refrigerant-134a as the working fluid is used to keep a room at...
6-108 An air-conditioner with refrigerant-134a as the working fluid is used to keep a room at 23C by rojece ing the waste heat to the outdoor air at 34'C. The room gains heat through the walls and the windows at a rate of 250 J/min while the heat generated by the computer, TV, and lights amounts to 900 W. The reſngcrant enters the com- pressor at 400 kPa as a saluralod vapor at a rate of 80 L/min and leaves...
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
value 10.00 points Question An air-conditioner with refrigerant-134a s the working fluid is used to keep...
value 10.00 points Question An air-conditioner with refrigerant-134a s the working fluid is used to keep a room at 21°C-Ass by rejecting the waste heat to the outdoor air at 37°C. The room gains heat through the walls and the windows at a rate of 249 kJ/min while the heat generated by the computer, TV, and T lights amounts to 600 W. The refrigerant enters the compressor at 360 kPa as a saturatedV vapor at a rate of 100 L/min...
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 ideal heat pump is used to maintain the inside temperature of a house at Tin...
An ideal heat pump is used to maintain the inside temperature of a house at Tin = 20 ∘C when the outside temperature is Tout. Assume that when it is operating, the heat pump does work at a rate of 1700 W . Also assume that the house loses heat via conduction through its walls and other surfaces at a rate given by (650W/∘C)(Tin−Tout). For what outside temperature would the heat pump have to operate at all times in order...
Heat Loss and Heating Costs of a House Part A A house has well-insulated walls 17.1...
Heat Loss and Heating Costs of a House Part A A house has well-insulated walls 17.1 cm thick (assume conductivity of air) and area 411 m2, a roof of wood б.бб cm thick and area 279 m2, and uncovered windows 0.626 cm thick and total area 33.4 m2. Assuming that the heat loss is only by conduction, calculate the rate at which heat must be supplied to this house to maintain its temperature at 21.4°C if the outside temperature is...
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...
Please show all
equations needed in answer and please specify which thermodynamics
table is used for what values taken from any tables
Waeer 2C 12 MMP 25 c Problem I: 12 MP An air conditioner with R-134a as the working fluid maintains a house at a constant temperature of 23°C during the summer. The minimum temperature in the air conditioner cycle is -8°C, and the maximum temperature in the air conditioner cycle is equivalent to the outside temperature. The house...
(d) Figure Q3 shows an air-conditioner is used to maintain a house at 15 °C by removing the heat from the house to the outside air at a temperature of 30 °C. The house is estimated to gain heat at a rate of 200,000 kJ/h. The air- conditioner consumes 5 kW of electric power when running. Analyse if the air-conditioner is powerful enough to perform the task. (10 marks) [Total : 25 marks] Air- cond 30 °C 15 °C 200,000...
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...
6-108 An air-conditioner with refrigerant-134a as the working fluid is used to keep a room at 23C by rojece ing the waste heat to the outdoor air at 34'C. The room gains heat through the walls and the windows at a rate of 250 J/min while the heat generated by the computer, TV, and lights amounts to 900 W. The reſngcrant enters the com- pressor at 400 kPa as a saluralod vapor at a rate of 80 L/min and leaves...
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
value 10.00 points Question An air-conditioner with refrigerant-134a s the working fluid is used to keep a room at 21°C-Ass by rejecting the waste heat to the outdoor air at 37°C. The room gains heat through the walls and the windows at a rate of 249 kJ/min while the heat generated by the computer, TV, and T lights amounts to 600 W. The refrigerant enters the compressor at 360 kPa as a saturatedV vapor at a rate of 100 L/min...
Heat Loss and Heating Costs of a House Part A A house has well-insulated walls 17.1 cm thick (assume conductivity of air) and area 411 m2, a roof of wood б.бб cm thick and area 279 m2, and uncovered windows 0.626 cm thick and total area 33.4 m2. Assuming that the heat loss is only by conduction, calculate the rate at which heat must be supplied to this house to maintain its temperature at 21.4°C if the outside temperature is...
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