A heat pump absorbs 10 kW of heat from outside environment at 250 K while absorbing 15 kW of work. It delivers the heat to a room that must be kept warm at 300 K. The Coefficient of performance (COP) of the heat pump is

Q: A heat pump with a coefficient of performance of 1.8 supplies energy to a house at a rate of 75 MJ…

A: To find: electrical power used by the heat pump

Q: For a refrigerator with automatic defrost and a top-mounted freezer, the electric power required is…

A: The given information in the problem is shown in the following attached image:

Q: 4. A household refrigerator with a COP of 1.25 removes heat from the refrigerated space at a rate of…

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Q: An A/C unit removes heat from the house at a rate of 1 MJ/min. If the required power input to this…

A: Given:Heat rejected from the house, Q˙=1 MJ/minQ˙=160×103 kJ/secPower required to AC, Qi=6 kW

Q: 1. The four heat engines shown below have the maximum possible efficiency. Rank from smallest to…

A: Given data: -  The temperature of the hot region is Th. The temperature of the colder region is Tc.

Q: A 650 MW steam power plant has an efficiency of 62%.it is cooled by rejecting heat to a nearby…

A: Given Data: Power produced, P=650 MW Efficiency, n=62 %

Q: costs 8 cents per kW-hr, determine the minimum theoretical operating cost to heat the house for 24…

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Q: An engine operates between temperature limits of 900 K and T2 and another between T2 and 400 K. For…

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Q: If the energy crossing the boundary of a closed system is not heat, it must be work?

A: Heat and work are path-dependent properties. It cannot be stored. If the energy is crossing the…

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 garage is being retrofitted with a heat pump of COP=3. The garage heat losses are 10,000 BTU/h.…

A: To determine the cost of heating the garage for one month using the heat pump, we can use the…

Q: A heat pump is absorbing heat from the cold outdoors and supplying heat to a house. The house is…

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Q: A heat pump is used to maintain a space at 25 C during winter while the outdoor temperature is 10 C.…

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Q: Q7: An air conditioning system is used to maintain a house at a constant temperature of 20 C. The…

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Q: Q/ Two reservoirs 727 °C and 23 °C are used to operate heat engine. 50% from the power output of…

A: Heat engine is a device that works between two thermal reservoirs and produces work by supplying…

Q: A heat pump with a coefficient of performance of 3.5 provides energy at an average rate of 70000…

A: GivenCoefficient of performance COP=3.5Energy at an average rate of QH=70,000 kJ/hOutside temp…

Q: A heat pump supplies heat to a house at a rate of 30,000 kJ/hr. If the power consumed by the heat…

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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: Determine the COP (coefficient of performance) of a heat pump if the rate of heat rejected is 360…

A: Given, Rate of heat rejection = QR = 360 kJ/min Power supplied = W = 2 kW   Rate of heat rejection…

Q: A SYStem executes a power cycle while recieving 750 k) by heat transfer at a temperature of 1500°k…

A: GivenQ1=750kJT1=1500kQ2=-100kJT2=500KQ3=?T3=1000K

Q: A heat pump cycle delivers energy by heat transfer to a dwelling at a rate of 50,000 Btu/h. The…

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Q: eat engine work

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Q: A domestic refrigerator with a COP of 1.2 removes heat from the refrigerated space at a rate of 60…

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Q: You need an apartment for rent and as shown in the figure, you can see that the 3rd floors of each…

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Q: A heat pump operating at steady state maintains a dwelling at 23°C on a day when the outside…

A: The heat pump is used to maintain a certain temperature where the surrounding temperature is…

Q: A household refrigerator with a COP of 1.25 removes heat from the refrigerated space at a rate of…

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Q: 1. Please consider a heat engine that was taking in heat at the rate of 250 Btulsec and produced 85…

A: Given: Determine the efficiency of the heat engine. A heat engine is defined as a device that…

Q: the irreversibility (in W) due to heat transfer through the

A: Given. One side of a wall is maintained at,T1=400 KT2=300 KHeat transfer rate,Q=…

Q: One side of a wall is maintained at 400 K and the other at 300 K. The rate of heat transfer through…

A: Given Ts1=400 KTs2=300 KQ.=1000 WTsur=25oC To find Rate of heat transfer within wall

Q: An inventor claims to have a solar powered heat pump that receives energy as heat from the sun at…

A: COP of given heat pump=Q2WNow,W=10KWQ1=7KWNow,Q1+W=Q2⇒Q2=(10+7)=17KW⇒COP=1710KW=1.7Since COP>1…

Q: A heat pump with COP of 2.0 is used to heat water to 90 oC for cleaning purpose. This heat pump…

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Q: The temperature of a gym is wanted to be kept at 297K. The environment is 312 K and the gym unit has…

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Q: A solar collector absorbed 40 W/m2 heat from the atmosphere. This is equal to the convection brought…

A: Given data,  q = Q/A = 40 W/m²  T1=40°C  T2=80°C

Q: Q5: Determine which removes heat from the food compartment at a rate of 6000000 J/h for each 1200 W…

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Q: Determine the COP (coefficient of performance) of a heat pump if the rate of heat rejected is 360…

A: Given:  Heat Pump Rate of heat rejected = 360 kJ/min = 36060 = 6 kW Power Supplied = 2 kW

Q: Determine the net power required to operate the heat pump, in kW. whose coefficient of performance…

A: GivenCOP=2.5Qout=20kw