Two identical metal blocks, each weighing 25 kg and having a specific heat of 0.4 kJ/kg, are first heated to a temperature of 50 degrees Celsius. A refrigerator that is reversible accepts heat from one block and denies it to the other. Determine how much effort the refrigerator must do to generate a temperature differential of 150 degrees Celsius between the two blocks.

Q: power required to drive the compressor in a Carnot refrigerator is 56 hp. It operates between -6°C…

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Q: A household refrigerator draws 113.9 W of electricity in order to keep its refrigerated compartment…

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Q: A Carnot heat engine operating between two reservoirs at 20 °C and 350 °C produces 10 kW of net…

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Q: The power required to drive the compressor in a carnot refrigerator is 60hp. It operates between…

A: For solution refer below images.

Q: on water-cooled air-conditioning system with a condensing temperature of 45°C and evaporating…

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Q: The power required to drive the compressor in a Carnot refrigerator is 62 hp. It operates between…

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Q: A carnot engine is working between two fixed temperature reservoirs 600 K and 300 K. Determine the…

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Q: Find the required power (in kW) to operate this cooling machine and the lowest temperature inside…

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Q: Carnot refrigerator operates between reservoirs at -20∘C∘C and 40 ∘C∘C in a 25∘C∘C room. The…

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Q: A heating system must maintain the interior of a building at TH = 20°C when the outside temperature…

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Q: e power required to drive the compressor in a Carnot refrigerator is 46 hp. It operates between -8°C…

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Q: A heat engine that propels a ship produces 500 Btu/lbm of work while rejecting 300 Btu/lbm of heat.…

A: Given Data Work produces by the heat engine, W=500 Btu/lbm Heat rejected by the heat engine, Q2=300…

Q: The maximum efficiency of a heat engine works between 660 K and 323 K is

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Q: n a given process, a heat engine requires 2500J of energy and exhausts 1200J of heat. What is its…

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Q: A refrigerator operating between -5°C and 27°C has the capacity of 80 tons. Determine the number of…

A: Write the given data in the problem.  m=10 kgT1=27°CT2=0°C Here, m is the mass of the refrigerator,…

Q: (1) Explain how a heat engine works. (2) Explain the 2nd Law of thermodynamics.

A: Given data⇒ Heat engine

Q: A Carnot heat engine receives 650 kJ of heat from a source of unknown temperature and rejects 250 kJ…

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Q: Pa and 2 MPa. If heat is supplied to the heat engine at a rate of 380 kJ/s, the ma is heat engine…

A: GivenP1=5MpaP2=2MpaQ=380kj/s

Q: The power required to drive the compressor in a Carnot refrigerator is 48 hp. It operates between…

A: Given data: TL=-6°C=267 KTH=39°C=312 K Need to determine the coefficient of performance.

Q: The power required to drive the compressor in a Carnot refrigerator is 62 hp. It operates between…

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Q: A heat engine receives a heat-transfer at the rate of 2 MW at a high temperature of 750 °C. The…

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Q: Describe an imaginary process that satisfies the first law but violates the second law of…

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Q: An engineer receives a schematic fora reversible heat engine with three reservoirs at the…

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Q: If H is the work output of a heat engine and Q is the total heat input of an engine, then determine…

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Q: Define the work (boundary) done on an adiabatic system is equal to the increase in the energy of the…

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Q: The thermal effiency of a general heat engine is 35 percent, and it produces 60 hp. At what rate is…

A: The thermal efficiency of a general heat engine is,(ηe)=35% The work output,(W)=60 hp. Determine the…

Q: Heat can never pass from a colder to warmer body without another concurrent change within.” What is…

A: The second law of thermodynamics act as a barrier for refrigeration to occur naturally unless…

Q: Two identical metal blocks of mass 20 kg and specific heat 0.4 kJ/kg are at an initial temperature…

A: Let us call the two blocks as block1 and block2. (Refer to Figure1)Mass of each block (m)=…

Q: A heat pump is used to extract heat from the outside atmosphere to heat the inside of a building.…

A: Given: The cop = 2.7 The heat loss rate, Q = 62,893 kJ/hr = 17.47 kJ/s

Q: Two reservoirs maintained at 600°F and 50°F are used to operate a Carnot engine. The rate of work…

A: Detailed explanation and solution of the above problem uploaded in the below picture.

Work and Heat Transfer

It is generally related to thermal engineering which tells about the use, creation, conversion and transfer of heat energy between the systems. It is also considered that to transfer heat from one source to another, transfer of masses is also required. There are various mechanisms by which, transfer of heat takes place i.e. thermal conduction, convection, radiation or by change of phase. All these mechanisms have their own specific features which sometimes occur simultaneously within the same system.