What would be the maximum COP for a heat pump operating in your house if the outside temperature is 55 F? Draw a heat flow diagram. How much cheaper will this be than electrical heating?
Q: 5. Imagine you have a heat pump connected to a cold and hot reservoir. During the operation of the…
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Q: 3.) A Carnot heat engine has a thermal efficiency of 0.600, and the temperature of its hot reservoir…
A: The question given is of a Heat engine running on a Carnot cycle. The work output during one cycle…
Q: heat removal rate from a refrigerated space and the power input to the compressor are 9.0kW and…
A: Given:HRR=9 kWW=1.8 kW
Q: Consider a building whose annual air-conditioning load is estimated to be 150,000 kWh in an area…
A: Given: The annual air-conditioning load is W=150,000 kWh, The unit cost of electricity is…
Q: A heat engine is operating on a Carnot cycle and has a thermal efficiency of 50 percent. The waste…
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Q: heat removal rate from the refrigerated space and the power input to the compressor are 9.0KW and…
A: Given:Qr=9.0 kWP=1.8 kW
Q: thermal machine operates between 2 tanks at 800ºC and 20ºC; half of the power produced by this…
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Q: 3. A heat engine operating between a geothermal steam source at 205°C and a riv- er at 18°C achieves…
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Q: 7. (a) Compute the possible maximum efficiency of a heat engine operating between the temperature…
A: Given Data (a) Higher temprature = 698'C Lower Temprature = 147'C We have to find Efficiency of…
Q: In one cycle, a certain heat engine takes in 1000 J of heat from its high-temperature reservoir and…
A: Given, Heat absorbed from hot reservoir = Q1 = 1000 J Heat rejected to cold reservoir = Q2 = 700 J…
Q: A heat engine operating with a hot reservoir of furnace gases at 2300 °C. The cooling water is…
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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: An air-conditioner with refrigerant-134a as the working fluid is used to keep a lab at 26°C by…
A: Given DataP1=500kPaP2=1200kPaP=850kWQ=100L/minT1=34°CT2=34°C
Q: ) A heat pump is used to heat a house and maintain it at 25°C. On a winter day when the outdoor air…
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Q: A heat pump used to heat a house runs about one-third of the time. The house is losing heat at an…
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Q: Refrigerant as a work fluid to keep an environment at 25 ° C. A heat pump using 134a is used. The…
A: The environment temperature of refrigerant fluid is given as,TL=25∘C The evaporator entering…
Q: orbing heat from the cold outdoors at 5 degrees celsius and supplying heat to a house at 22 degrees…
A: Given:TL=5°C =268 KTH=22°C =295 KQH=18000 KJ/h =180003600 KWP=2.5 KW
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 heat rate of 36,000 kJ/hr. a. What is the COP of the heat pump if the power consumed is 1.7 kW?…
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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 heat pump has a coefficient of performance of 3.1 in heating mode. If it requires 130 J of work…
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Q: 7 Heat is transferred from a tank of water in a refrigerator at(OC) degrees to a tank of boiling…
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Q: The energy leakage per unit time is 0.6 kW for each 1℃ temperature difference between a house to be…
A: The ratio of the desired effect to the work input for a power-consuming system such as a pump or…
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: A Carnot heat engine operates between a source at 727 °C and a sink at 27 °C If the heat engine is…
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Q: 3.) When a gas surrounded by air is compressed or expands adiabatically, its temperature rises or…
A: Since you have asked multiple questions, only the first question is solved for you. If you want any…
Q: A heat engine receives half of its heat supply at 1000 K and half at 500 K while rejecting heat to a…
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: nd out the COP of a Carnot heat pump operating between 6°C and
A: Given:High temperature of heat pump, T1=37o C or 310 KLow temperature of heat pump, T2=6o C or 279 K
Q: The COP of a Carnot heat pump operating between 6°C and 37°C is.
A: Given, Temperature at which heat is supplied to heat pump (Lower temperature) = TL = 6 oC = 279 K…
Q: The efficiency of an ideal heat engine working between the freezing point and boiling point of water…
A: Here, the thermal efficiency of the ideal heat engine is to be found which is working between…
Q: 1.)A heat engine is operating on a Carnot cycle and has a thermal efficiency of 58.65 percent. The…
A: Dear student, According to guidelines I am allowed to answer only one problem…
Q: The performance of a heat pump degrades (i.e., its COP decreases) as the temperature of the heat…
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Q: The performance of a heat pump degrades (i.e., its COP decreases) as the temperature of the heat…
A: Given: The temperature of house is T1=20°C The outdoor air temperature is T2=10°C Convert Celsius…
Q: 1.2 A reversible heat pump is used to maintain a temperature of 0°C in a refrigerator when it…
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Q: An inventor claims to have developed a heat pump that runs between a sink at 273 K and a source at…
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Q: You have a refrigerator in your garage. Does it perform differently in the summer than in the…
A: A fridge is simply not protected or made alright, to run in an exceptionally hot climate. When we…
Q: A heat engine accepts heat from a source at a rate of 500 kW, and it rejects heat to a sink at a…
A: Given data: *The rate at which the heat engine accepts the heat is Qs=500 kW. *The rate at which the…
Q: The performance of a heat pump degrades (i.e., its COP decreases) as the temperature of the heat…
A: Given
Q: A heat engine operates between two reservoirs at 800 and 20°C. One-third of the work output of the…
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Q: You are an engineer in an electric-generation station. You know that the flames in the boiler reach…
A: Given Boiler temperature = 1200 K Cooling water temperature = 300 K To find Maximum efficiency of…
Q: A heat engine has a total heat input of 1.3 kJ and a thermal efficiency of 35 percent. How much work…
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Q: The objective of a refrigerator is to remove QL from the cooled space.
A: objective of refrigerator
Q: B) A reversible heat engine operates between two reservoirs at temperatures of 600°C and 40°C. The…
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Q: c) A refrigerator is used to keep the cold space at -5 °C by rejecting 8 kJ/s of heat by the…
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- Can a heat pump switch from heating to cooling and from cooling to heating automatically?A heat pump is used to heat a house. When the outside air temperature is 266K and the inside is maintained at 293K, the heat loss from the house is 195 kW. a. What is the minimum electric power (kW) required to operate the heat pump? b. What is the rate of heat transfer to the heat pump? C. What is the COP for an ideal heat pump operating between these temperatures?QUESTION 8 A farmer runs a heat pump with a 2 kW motor. It should keep a chicken hatchery at 30°C, which loses energy at a rate of 10 kW to the colder ambient Tamb. What is the minimum COP that will be acceptable for the heat pump? (please sketch the schematic diagram)
- Refrigerationa.) Explain why you can’t cool down your kitchen by leaving your refrigerator or freezer door open with your refrigerator plugged in for an extended period of time.b.) The condenser of a home refrigerator is commonly underneath the appliance, thus the condensing refrigerant exchanges heat with household air, which averages 70oF. It is proposed toreconfigure a refrigerator so that the condenser is in the garage, where the average yearly temperature is about 50oF. Assume a freezer temperature of 0oF, a minimum temperature difference of 10K for heat transfer, and an actual coefficient of performance of 60% that of a Carnot cycle. Calculate the Coefficient of Performance for both configurations and discuss the pros and cons of this proposal.c.) Which is the most effective way to increase the coefficient of performance of a Carnot refrigerator: to increase TC with TH held constant or to decrease TH with TC held constant? Justify mathematically. For a real refrigerator, do…Yeji just came back from dance practice and went straight to her bedroom. It was summer so the temperature in her bedroom was estimated to be around 40°C. She then turned her air conditioner on, closed her door and windows, and it cooled her bedroom to 18°C in 20 minutes. Calculate,a. How much heat was transferred to cool her bedroom to 18°C?b. What is the power consumption of the air conditioner, in kW?The air conditioner has a COP of 2.8. Assume the mass of her entire bedroom to be 750 kg of air, Cv = 0.72 kJ/kg.°C and Cp = 1.0 kJ/kg.°C.*Round off all answers to four decimal places*2.0 What is the highest possible theoretical efficiency of a heat engine operating with a hot reservoir of furnace gases at 2000'C when the cooling water available is at 10°C? Ans. 87.54%
- A 750 MW power plant operates between 450 0C and 40 0C thermal reservoirs. If this plant has a cycle thermal efficiency of 48 %, a) calculate the needed energy input to the thermal engine, and the b) needed mass flow rate of cooling water needed at the condenser if its DT has to be 25 0 The cooling water has a density of 1000kg/m3 and a specific heat of 4.181 kJ/(kg-K).Based on the steam engine represented on the following figure, a) Describe the heat engine cycle and explain why it is useful. b) Describe the energy conversions that occur.Pls. Answer thank you! A logging firm in Isabella operates a Diesel Electric Plant to supply its electric energy requirements. During a 2 hour period, the plant consumed 250 gallons of fuel at 80°F and produced 2900 kW-hrs. Industrial fuel is used at 30°API and was purchased at P30/li at 60°F. Determine the overall thermal efficiency in percent of the plant.
- 3.) When a gas surrounded by air is compressed or expands adiabatically, its temperature rises or decreased even though there is no heat input or dissipated to the gas. Where does the energy come from to raise or lower the temperature? 4.) Why must a room air conditioner be placed in a window rather than just set on the floor and plugged in? Why can a refrigerator be set on the floor and plugged in?Pls. Answer thank you! An air-conditioning system is used to maintain a house at 75°F when the temperature outside is 95°F. The house is gaining the heat through the walls and windows at a rate of 1250 Btu/min, and the heat generation rate within the house from people, lights, and appliances amounts to 350 Btu/min. Determine the minimum power input required for this air-conditioning system.Q-4 ) In a winter season when outside temperature is -4°C, the inside of house is to be maintained at 22°C. Estimate the minimum power required to run the heat pump of maintaining the temperature. Assume heating load as 150MJ/h.