(9) The coefficient of performance of a residential heat pump is 2.85. If the input power to this heat pump is 2.7 kW, Calculate the rate of heat supply to the house, in kJ/h.
Q: thermal heat pump with a coefficient of performance of 1.3 supplies a building with 48000 BTU/hr of…
A: Given:COP of heat pump=1.3Heat supplied, Qa=48000 BTU/hrRate, R=$0.20/KWh
Q: PROBLEM 2 A household refrigerator has a coefficient of performance of 3 and requires a net power…
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Q: 2) A heat pump with the amount of heat of liquid refrigerant (mix) when it will enter the expansion…
A: Answer: The coefficient of performance of the heat pump is 0.575.
Q: A heat pump is used to meet the heating requirements of a house and maintain it at 20°C. On a day…
A: As per given Heat pump temprature=20°c Outside temperature =-2°c Heat loss by house =63000kj/h…
Q: b) On a winter day when the average outdoor temperature remains at about 4 ° C, the house is…
A: given data: surrounding temperature(T1)=40c=4+273=277Kroom maintain…
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Q: Define the coefficient of performance of a heat pump in words. Can it be greater than unity?
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Q: 1. Assess the limiting factors that impact on the economics of heat pumps. As an example, consider…
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A: Given, Heat absorbed from hot reservoir = Q1 = 1000 J Heat rejected to cold reservoir = Q2 = 700 J…
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Q: A heat engine operates on the Carnot cycle, and has a thermal efficiency of 75 percent. The waste…
A: Given data: η=75%TL=15°CQR=14 kW Need to determine the power output of the motor and the temperature…
Q: 4-A heat pump with an efficiency coefficient of 2.4 is used to heat a house. Which of the following…
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Q: b) A heat pump used to heat a house runs about one-third of the time. The house is losing heat at an…
A: Given Data Ql= 22000 kJ/h CoP= 2.8
Q: A heat pump can use a maximum of 2 kW power for maintaining a house at 20°C during winter. The rate…
A: Data given- Q1 = 3000 kJ/hr = (3000/3600) kJ/s Q1 = 0.833 kW W = 2 kW T1 = 20°C = 293 K…
Q: ) A heat pump is used to heat a house and maintain it at 25°C. On a winter day when the outdoor air…
A:
Q: A heat pump uses 100 J of energy as it operates for a given time. Isit possible for the heat pump to…
A: Heat pump is thermodynamic device which fetches or extracts heat energy from a thermal heat…
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A: Given: The cooling effect produces by an automotive air conditioner is W1=1 kW. The power consumes…
Q: 3. An air conditioner removes heat steadily from a house at a rate of 750 kl/min while drawing…
A: (a) Write the formula for COP of the air conditioner. COP=Q˙LW˙ Here, Q˙L is the rate of heat…
Q: A heat pump is to be used for heating a house in winter. The house is to be maintained at 78°F at…
A: Given, T1 = 78°F T2 = 50°F Tambient = 25°F Q = 70,000 Btu/h COP = 11-(T2T1)COP =…
Q: A heat pump is used to heat a house in the winter months. When the average outside temperature is…
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Q: A Carnot heat pump is used to heat and maintain a residential building at 75°F. An energy analysis…
A: Given: The outdoor temperature is TL= 35°F. The temperature of the building is TH=75°F. The rate of…
Q: A Carnot heat pump is used to heat and maintain a residential building at 75°F. An energy analysis…
A: Given: The outdoor temperature is TL= 35°F. The temperature of the building is TH=75°F. The rate of…
Q: A heat pump keeps the house at 20°C while the ambient (outside) temperature is 0°C. from the roof…
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Q: During a cycle of processes, the heat transfers are the following +120 kJ, -16 kJ, -48 kJ and +12…
A: Given, A cyclic process to be considered . heat interactions - +120kj, -16 kj , -48 kj ,and +12…
Q: A Carnot heat engine receives heat from a reservoir at 1200°C at a rate of 800 kJ/min and rejects…
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Q: Explain how you can reduce the energy consumption of your household refrigerator.
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Q: What would be the maximum COP for a heat pump operating in your house with the outside temperature…
A: Given To determine the maximum COP for a heat pump.
Q: 11-A maximum of 5 kW of power can be consumed for a heat pump. If the efficiency coefficient is…
A: coefficient of performance COP = Desired effect / work input required
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A: Given that at T1= 1000 K and at T2= 500 K heat supply = Q1 , sink for both is same at T3=300 K;And…
Q: b) On a winter day when the average outdoor temperature remains at about 4°C, the house is estimated…
A: Heat pump: The device that is used for transfer heat is called a heat pump. Refrigerators and air…
Q: 1. A geothermal heat pump with a COP of 1.3 provides 48000 BTU/hr of heat to a building. Assuming an…
A: (a) electric power supplied =48000 BTU/hr = 14.064 KW electrical energy supplied to the building…
Q: An irreversible heat pump with COP of 2.4 is used to heat water to 80°C for cleaning (b) purposes.…
A:
Q: (9) The coefficient of performance of a residential heat pump is 1.95. If the input power to this…
A: Given data:
Q: An irreversible heat pump with COP of 2.4 is used to heat water to 80°C for cleaning purposes. This…
A:
Q: A claim states that a heat pump has been invented that requires work to be done on the system of…
A: It is impossible device , because net work done is greater than heat supplied.
Q: A heat engine operates by receiving heat from a reservoir at 900 oC at a rate of 800 kJ/min and…
A: As per company policy, we are restricted to solve only three sub-parts of one question at a time.…
Q: 1. The four heat engines shown below have the maximum possible efficiency. Rank from smallest to…
A: Q.1We know thatη=1−TLTHconsidering 1st cylinderT1=300KT2=600 Kη=1−300600=0.5η1=50%considering 2nd…
Q: The coefficient of performance of a residential heat pump is 1.6. Calculate the heating effect in…
A: coefficient of performance = 1.6 Workdone = 2 kW The rate of heat…
Q: Determine the net power required to operate the heat pump, in kW. whose coefficient of performance…
A: GivenCOP=2.5Qout=20kw
Q: 1.2 A reversible heat pump is used to maintain a temperature of 0°C in a refrigerator when it…
A:
Q: 10.) A heat pump used to heat a house runs about one-third of the time. The house is losing heat at…
A: GIVEN DATA - DESIRED EFFECT Q=24000KJ/h HEAT PUMP RUNS ONE-THIRD TIME COP =3 WE HAVE TO FIND POWER
Q: n inventor claims to have a solar powered heat pump that receives energy as heat from the sun at the…
A:
Q: A heat engine has a total heat input of 1.3 kJ and a thermal efficiency of 35 percent. How much work…
A:
Q: 1. During a cyclic process, a heat engine absorbs 500 J of heat from a hot reservoir, does work and…
A: Given:Heat engineheat absorbs, Q1=500 Jheat to sink, Q2=300 J
Q: c) A refrigerator is used to keep the cold space at -5 °C by rejecting 8 kJ/s of heat by the…
A:
![(9) The coefficient of performance of a residential heat pump is 2.85. If the
input power to this heat pump is 2.7 kW, Calculate the rate of heat supply
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- 1. A geothermal heat pump with a COP of 1.3 provides 48000 BTU/hr of heat to a building. Assuming an electrical power rate of $0.20/kWh. answer the following questions for this system: a. What would be the monthly cost to provide heat at a rate of 48000 BTU/hr if the heat was delivered by a simple electrical resistance heater? b. How much heat is drawn from the ground by the heat pump in that month, in kWh? c. What is the savings per month enjoyed by operating this heat pump for a month vs. a simple electrical resistance heater?(9) The coefficient of performance of a residential heat pump is 1.95. If the input power to this heat pump is 4.5 kW, Calculate the rate of heat supply to the house, in kJ/h. Reservoir HP W ReservoirA Carnot heat pump to heat a house in the winter and keep the interior temperature of the house at 25 ° C. is used. The heat losses of the house in a day when the outdoor temperature is 2 ° C are approximately 55000 kJ / hour. determined. If the heat pump is drawing 6.6 kW of power from the grid while it is running a) How many hours the heat pump has been running on the specified day (outdoor temperature is 2oC) b) By accepting that the electricity price is 0.085 dollars / kWh c) Calculate the cost of heating the same day if a direct electric heater was used.
- A geothermal heat pump with a coefficient of performance of 1.3 supplies a building with 48000 BTU/hr of heat. Assuming a $0.20/kWh electricity rate. Provide responses to the following questions about this system: a. How much would it cost per month to supply heat at a rate of 48000 BTU/hr using a basic electrical resistance heater? b. In that month, how much heat is extracted from the earth by the heat pump, in kWh? c. What is the monthly savings associated with using this heat pump vs a basic electrical resistive heater?A heat pump with COP of 2.0 is used to heat water to 90 oC for cleaning purpose. This heat pump absorb heat from surrounding at 30 oC and received the entire power, ̇ from a Carnot heat engine operating between 200 oC and 25 oC. The Carnot heat engine received 6.3 kW of heat from the high temperature source. i) Draw the schematic diagram of the above system. ii) Determine the power received by the heat pump, ̇ from Carnot heat engine, kW. iii) Calculate the rate of heat supplied to the water by the heat pump, kW. iv) Determine the COP of the heat pump if it operates on a reversed Carnot cycle.A heat engine with a thermal efficency of 45% rejects 500kJ/kg of heat. How much heat does it recieve?
- If a house needs a minimum heat transfer rate of 75 kJ/h (i.e., 75 kJ of heat needs to be transferred into the house during one hour) to maintain a pleasant indoor temperature. If one wants to use a heat pump with a COP of 5.55 to fulfill this heat transfer rate, what is the corresponding electricity (in kWh) consumption to run such a heat pump for one hour?A heat engine operates between thermal energy stores at 800 ° C and 20 ° C. Half of the power generated by the heat engine drives the Carnot heat pump, which is used to heat a house. While the interior temperature of the house is 22 ° C, the outside temperature is 2 ° C, the heat loss of the house is 62000 kJ / h. In these conditions, calculate the minimum heat that should be given to the heat machine per unit time as kW.A heat pump with a motor of 2 kW is used to keep a chicken hatchery at 30°C. This latter loses energy at a rate of 0.5 kW per degree difference to the colder ambient. The heat pump has a COP that is 50% of a Carnot heat pump. a- Draw a sketch for the entire system showing all energy transfers. b- Illustrate a heat pump operating between two constant-temperature energy reservoirs showing all energy transfers. c- What is the minimum ambient temperature for which the heat pump is sufficient?
- A heat pump with a coefficient of performance of 3.5 provides energy at an average rate of 70000 kJ/h to maintain a building at 20 °C on a day when the outside temperature is -5 °C. If the electricity costs 8.5 cents per kWh. Assume heating is 24 hours a day. (1) Determine the actual operating cost in $/day. (2) Determine the minimum theoretical operating cost in $/day.1. In an analysis, a heat engine based on the Carnot cycle operating between 1000 0C and 300 0C. The heat rejected from this engine to the sink was at a rate of 800 kJ/min. Determine the thermal efficiency (in %) and power output (in kW) of the engin 2.You found out that the power output of your dream car is the same as the sum of each digits of your student number (in kW) with a percentage thermal efficiency the same as the first four digit of your student number divided by 100. The calorific value of the fuel available has a calorific value of 40 000 kJ/kg. Assuming a constant power output from the car, calculate the heat transfer rate (in kW) and the fuel consumption rate (in kg/h)A heat pump with a coefficient of performance of 3.5 provides energy at an average rate of 70,000 kJ/h to maintain a building at 20 deg C on a day when the outside temperature is -5 deg C. If electricity costs 8.5 cents per kWh, (a) determine the actual operating cost and the minimum theoretical operating cost, each in $/day. (b) compare the results of part (a) with the cost of electrical-resistance heating.
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