Ql: A closed steel bottle contains ammonia at -20°C, x 20% and the volume is 0.05 m3.It has a safety valve that opens at a pressure of 1.4 MPa. By accident, the bottle is heated until the safety valve opens. Find the temperature and heat transfer when the valve first opens.

Q: A tank of 2m' volume contains saturated ammonia at a temperature of 40°C, the tank contains 50%…

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Q: 2-A closed container is filed with 2 kg of R-134a refrigerant at P=200 kPa. If the volume of the…

A:

Q: Thermodynamics problem. A 5m3 rigid container containing water of 80% quality and a pressure of…

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Q: A heat sink for computer server absorbs all the heat generated and cools down by air flow. The air…

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Q: A cylinder/piston contains carbon dioxide at 300°C, 1 MPa with a volume of 200L. The total external…

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Q: 1. One kg of air is heated and compressed in a piston/cylinder system from 400 K, 100 kPa to 1200 K,…

A: For the solution refer below images.

Q: The temperature at state A is 20ºC, that is 293 K, what is the temperature at state D, in Kevin?

A: Given:

Q: A 2kg steam was in a piston cylinder with pressure of 1 MPa and 200°C.Heat transferred isobarically…

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Q: A piston cylinder has 2.2 kg of air at 300 K and 150 kPa. It is now heated up in a two step process.…

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Q: Two rigid tanks are filled with water. Tank A is 0.2 m' at 200 kPa, 150 °C and tank B is 0.3 m at…

A: Given that, Volume of tank A is, VA=0.2 m3Pressure in tank A is, PA=200 kPa,Temerature in tank A is,…

Q: 3.113 The piston/cylinder in Fig. P3.113 contains 0.1 kg water at 500°C, 1000 kPa. The piston has a…

A: The objective of the question is to understand the thermodynamic process of water in a…

Q: 3kg of Co2 expanded in a stationary piston cylinder through a polytropic process from 30 degree…

A: T1= 30+273= 303K, m=3kgP1=250KPa, P2=100KPan=1.45T2T1= 1002501.45-11.45=228.014KTotal Work, W=…

Q: 4.19 A balloon behaves such that the pressure inside is proportional to the diameter squared. It…

A: Write the given values with the suitable variables. m=2 kgx=60%=0.6P2=600 kPa Here, m, x, and P2 are…

Q: A rigid container contains saturated vapour at 1.6 bar.  The container is cooled by -440 KJ and the…

A: GivenP1=1.6barQ=-440kJP2=1bar

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.