An inventor comes to you saying he has invented a refrigerator that maintains a room at 20F while operating in a location at 80F with a coefficient of performance of 8.5, is this possible?

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: 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: While 50 kJ of heat is input to the closed system, a 5 kN.m work input occurs with a mixer placed in…

A: Given data: Write the expression to calculate the final internal energy of the system.

Q: Between two given thermal energy reservoirs, an irreversible heat engine will have nth than that of…

A: Ans:   lower  An irreversible heat engine will have lower thermal efficiency than that of reversible…

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: Re(Local)=5.05*10^6. Use Example 2B.2 as reference. Find out the total convective heat transfer rate…

A: Given that, Circuit board geometry: -L=0.15 m,    W=0.15 m,Convective heat flux to air, q''=890…

Q: A canot engine receives 130 Btu of heat from a hot reservoir at 700 °F and rejects 49 Btu of heat.…

A: Given:- Carnot cycle T1=700°F=644.11K Q1=130 Btu Q2=49 Btu To find:- a) Thermal efficiency b)…

Q: 3.Two Carnot heat engines run in series with the efficiency of first engine is 1/k times the second.…

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Q: The compressor of a refrigerator with a cooling coefficient (COP) of 5, located in the kitchen at…

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Q: Q2 (a) A heat engine is a system that converts heat into mechanical energy, which can then be used…

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Q: is most likely:     320 Btu/lbm     90 Btu/lbm     260 Btu/lbm     350 Btu/lbm

A: According to the given data Qin=350 Btu/lbm Efficiency = η=0.74 We need to find  Net-work

Q: Q1. Answer the following: - A- What are the differences between the heat and temperature?

A: Heat is the type of energy that is transmitted between systems or objects with varying temperatures.…

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: 4) A household refrigerator working on an irreversible refrigeration cycle rejects heat to the…

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Q: A heat pump system operates between temperature limits of -5 and 18°C. The heating load of the space…

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Q: You are considering adding a water-based thermal store work in combination with the heat pump. What…

A: Given Data: t=2.5 hrsQ=7 kWT=22oC   To Find: The volume of store.

Q: cold Depicted in Fig. Q1 is an irreversible refrigerator whose compressor is powered by a reversible…

A: “Since you have posted a question with multiple sub parts, we will provide the solution only to the…

Q: - (II) An ideal heat pump is used to maintain the inside temperature of a house at Tin = 22°C when…

A: Given data Inside temperature of house = Tin = 22 °Cheat pump does a work rate = 1700 WThe heat loss…

Q: Find the heat lost or gained (a) between the evaporator coils and compressor, (b) between the…

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Q: heat engine is a device able to transform work into heat  true or false

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Q: 3.13 A refrigeration plant is modeled as a closed system operating steadily between the cold space T…

A: Refrigeration, often known as chilling, is the act of removing undesired heat from one item,…

Q: 2. Between 300K and 600K is the operating temperature of a pair of heat pumps connected in series.…

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Q: 5.) Does a refrigerator full of food consume more power if the room temperature is 200C than if it…

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Q: Q.1 A refrigerator is being driven by a heat engine and coefficient of performance of refrigerator…

A: Data given-  COP of refrigerator = 4  Qextracted = Q3 = 3500 kJ  Wcombined = 300 kJ

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: Current Attempt in Progress An inventor has developed a refrigerator capable of maintaining its…

A: Given data  The temperature of freezer = 20°F The temperature of kitchen = 70°F Find the which claim…

Q: 2.Two Carnot heat engines run in series with the efficiency of first engine is k times the second.…

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Q: Please answer all questions or leave for someone else to answer. A feedwater heater, operating in…

A: Given Inlet 1 Pressure = 5 MPa Temperature = 275o C Mass flow rate = 40 kg/s Inlet 2 Pressure = 5…

Q: A heat pump produces 10.8372 kW of heat while taking in 7.28103 kW of heat from a reservoir…

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Q: 3.3 Would it be possible to use a normal domestic refrigerator as a heat source for a small  hot…

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Q: (a) A food compartment is to be maintained at 21°C by a refrigeration system. The total cooling…

A: GIVEN DATA- (a) Temprature limt 21'C to 35'C , Total Cooling load=330KJ/h , Heat Rejection=480KJ/h…

Q: A claim states that a heat pump has been invented that requires work to be done on the system of…

A: Solution: Given Data: W=400 kJQrej=300 kJ   To Find: Whether the given device is possible or not?

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: Consider a facility with a staff of 20 people that require cold drinking water each day. Each person…

A: Given: T1=20°CT2=8°CCOPref=2.9Troom=25°CQ˙room=45 W