Q1: One kg of air at a temperature of 40°C is compressed isothermally from a pressure of 1.5 bar to 6 bar Determine the heat rejected by the air during the process of compression .For air Cp = 1.005 kJ/ kg .K and Cy = 0.712kJ/ kg. K %3D

Q: A certain ideal gas has the following properties: Cpo = A + (B/T) where A and B are constants and T…

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Q: Patm=101kPa; g=9.81m/s² A substance is contained in a piston cylinder assembly with properties as…

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Q: An unknown material, m1 = 0.27 kg, at a temperature of T1 = 83 degrees C is added to a Dewer (an…

A: Given m1 = 0.27 kg, T1 = 83 degrees C m2 = 1.6 kg T2 = 24 degrees C.  cw = 4186 J/kg⋅K. Find…

Q: Krypton in a closed system is compressed adiabatically from 94 K and 1 bar to a final pressure of 24…

A: Given: initial temperature→T1=94 K Initial pressure→P1=1 bar Final pressure→P2=24 bar Krypton is…

Q: 1. Answer the following questions. (i) Consider water substance at an absolute pressure of 20 bar…

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Q: An unknown material, m1 = 0.26 kg, at a temperature of T1 = 89 degrees C is added to a Dewer (an…

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Q: Two lbs of water vapor in a piston-cylinder assembly expands at a constant pressure of 300 lb/in²…

A: Mass of water is given as Water is expanded inside a piston cylinder assembly at a constant pressure…

Q: A food product containing 75% moisture content is being frozen. Estimate the specific heat of the…

A: Given: The specific heat of dry product, cp,1 = 2 kJ/kgoC The specific heat of water, cp,2 = 4.2…

Q: You are replacing an HVAC system in your building. The system is a steam system that consists of a…

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Q: Consider the following systems. a) What is the heat capacity of a system consisting of a 0.870-kg…

A: “Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: d) Sketch a P-V diagram and T-S diagram, indicating P, V, T, for all points & AU, Q, W, AH & AS for…

A: The mass of gas is .The pressure at point A is The temperature at point A is .The volume at point A…

Q: A horizontal piston-cylinder assembly contains 2.00 kg of a fluid. The assembly is fitted with both…

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Q: A food product containing 75% moisture content is being frozen. Estimate the specific heat of the…

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Q: Five lbs of propane is contained in a closed, rigid tank initially at 80 lbf/in.2, 150°F. Heat…

A: Given data: Pi=80 lbf/in2Ti=150°FTf=0°F Need to determine the amount of energy transfer by heat.

Q: A food product containing 85% moisture content is being frozen. Estimate the specific heat of the…

A: GIVEN:85% moisture content is being frozencontent of water frozen=60%specific heat of the dry…

Q: Refrigerant R-134a contained within a piston-cylinder device undergoes isobaric heating processes…

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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.