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2. A heat pump is operated to maintain a home at 25 °C when the outside temperature is only -5 °C...
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...
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.
Assignment Name: The second law of Thermodynamics for a heat pump Homework Purpose: Apply the second...
Assignment Name: The second law of Thermodynamics for a heat pump Homework Purpose: Apply the second law of Thermodynamies and Carnot cycle to a heat pump Task We propose to heat a house in the winter with a heat pump. The house is to be maintained at 20°C at l mes. When the ambient temperature outside drops to -10°C, the rate at which heat is lost from the house is estimated to be 25 kw. What is the minimum electrical...
5.75 A heating system must maintain the interior of a building at TH = 20 degree C when the outside temperature is T =...
5.75 A heating system must maintain the interior of a building at TH = 20 degree C when the outside temperature is T = 2 degree C. If the rate of heat transfer from the building through its walls and roof is 16.4 kW, determine the electrical power required, in kW, to heat the building using (a) electrical-resistance heating, (b) a heat pump whose coefficient of performance is 3.0, (c) a reversible heat pump operating between hot and cold reservoirs...
During winter time a heat pump is operating on a heating mode to maintain a living...
During winter time a heat pump is operating on a heating mode to maintain a living room at 23oC during which the outside temperature is -5oC. The system is using R134a as a working fluid. The refrigerant leaves the condenser at 28oC and enters a compressor at -10oC. The refrigerant flow rate is 0.12kg/s. Assume an ideal VCC to evaluate the system and report the followings: a. Process diagram b. Heating capacity kJ/hr c. Coefficient of performance of the system...
A heat pump operating with R-134a is used to maintain an indoor temperature of 21°C using...
A heat pump operating with R-134a is used to maintain an indoor temperature of 21°C using heat from the bottom of a lake that stays at 2°C. Assume an 80% efficient compressor. If the heat pump supplies 100 kW of energy to the building, calculate the required mass flow rate and COP for the heat pump. Calculate a few data points to plot the effect of a 10°C temperature range at the cold side on required mass flow rate and...
6. An office building requires a heat transfer rate of 20 kW to maintain the inside temperature a...
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....
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...
Assume that you heat your home with a heat pump whose heat exchanger is at Tc=2∘C, and which maintains the baseboard r...
Assume that you heat your home with a heat pump whose heat exchanger is at Tc=2∘C, and which maintains the baseboard radiators at Th=47∘C. If it would cost $1000 to heat the house for one winter with ideal electric heaters (which have a coefficient of performance of 1), how much would it cost if the actual coefficient of performance of the heat pump were 75% of that allowed by thermodynamics? Express the cost in dollars.
I have this case study to solve. i want to ask which type of case study...
I have this case study to solve. i want to ask which
type of case study in this like problem, evaluation or decision? if
its decision then what are the criterias and all?
Stardust Petroleum Sendirian Berhad: how to inculcate the pro-active safety culture? Farzana Quoquab, Nomahaza Mahadi, Taram Satiraksa Wan Abdullah and Jihad Mohammad Coming together is a beginning; keeping together is progress; working together is success. - Henry Ford The beginning Stardust was established in 2013 as a...
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...
Assignment Name: The second law of Thermodynamics for a heat pump Homework Purpose: Apply the second law of Thermodynamies and Carnot cycle to a heat pump Task We propose to heat a house in the winter with a heat pump. The house is to be maintained at 20°C at l mes. When the ambient temperature outside drops to -10°C, the rate at which heat is lost from the house is estimated to be 25 kw. What is the minimum electrical...
5.75 A heating system must maintain the interior of a building at TH = 20 degree C when the outside temperature is T = 2 degree C. If the rate of heat transfer from the building through its walls and roof is 16.4 kW, determine the electrical power required, in kW, to heat the building using (a) electrical-resistance heating, (b) a heat pump whose coefficient of performance is 3.0, (c) a reversible heat pump operating between hot and cold reservoirs...
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....
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...
I have this case study to solve. i want to ask which
type of case study in this like problem, evaluation or decision? if
its decision then what are the criterias and all?
Stardust Petroleum Sendirian Berhad: how to inculcate the pro-active safety culture? Farzana Quoquab, Nomahaza Mahadi, Taram Satiraksa Wan Abdullah and Jihad Mohammad Coming together is a beginning; keeping together is progress; working together is success. - Henry Ford The beginning Stardust was established in 2013 as a...
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