Calculate the Q, deltaU and W for the following processes. If pressure is not constant in the process, represent work in its integral form.  Isothermal compression of a gas from 150cm^3 to 50 cm^3, where P = 1.5 atm

Q: 5. During a polytropic process, an ideal gas with R = 38.68 ft-lb/ib0R and cv = 0.0747 BTU/lb0R,…

A: given that, P1=25 psiaP2=125psiaT1=500FT2=3500F we know that, in a polytropic process ,…

Q: A piston-cylinder assembly contains 5 kg of air modeled as an ideal gas with a constant specific…

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Q: SANAE IV, a research station of The South African National Antarctic Programme (SANAP), is located…

A: Entropy is the measure of disorderness of any system. If the heat flow occurs through any system,…

Q: adiabatic index, final pressure and work input.

A: Solution:-:         Given:-CO2-M=44kg/K mol                                   P1=3.7 bar…

Q: 1. An internally reversible process occurs in a system during which Q = – 12 KJ, ΔU = – 79 KJ and…

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Q: grams of steam has an initial enthalpy of 7100.546 kJ at 0.14546 Mpa. Isentropically compression…

A: Given:- The enthalpy of steam is, H=7100.546 kJ The initial pressure of the steam is, p1=0.14546…

Q: The following processes occur in a reversible thermodynamic cycle:   1-2: 0.2 kg heating at…

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Q: The mass of CO2 is 0.066 kg in a system (with molar mass 44 kg/kmol), occupying a volume of 0.026 m3…

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Q: fluid at 0.7 bar occupying 0.09 m3 is compressed reversibly to a pressure of 9.8 bar and specific…

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Q: 4 Calculate the isothermal and polytropic work of a reciprocating compressor and thus deduce the…

A: given; initial volume(V1)=0.1m3initial pressure(P1)=1bar                       =100kpainitially…

Q: n a piston cylinder system, a fluid at 0.5 bar occupying 0.10 m3 is compressed reversibly to a…

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Q: A 60-lb aluminum bar, initially at Ta = 170°F, is placed in a tank together with 190 lb of liquid…

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Q: When a stationary mass of gas was compressed without friction at constant pressure its initial state…

A: V1=Initial Volume of Stationary Gas=0.8 m3V2=Final Volume of Compressed Stationary Gas=0.4…

Q: A 40-lb aluminum bar, initially at Ta = 190°F, is placed in a tank together with 190 lb of liquid…

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Q: certain quantity of gas with an initial condition of 14 bar, 0.08 m3, and 450 K expands at constant…

A: Given Data State 1: 14 bar, 0.08 m3 and 450 K State 2: 0.25 m3, 14 bar

Q: Q15: Oxygen (molecular weight 32) is compressed reversibly and polytropically in a cylinder from…

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Q: deal gas with a molecular man of 30 is contained in an inflexible tark. It is heated from 259.45 °C…

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Q: In a piston cylinder system, fluid at 0.8 bar occupying 0.09 m3 is compressed reversibly to a…

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Q: During an isothermal process, at 900F, the pressure on 9 lb of air drops from 85 psia to 10 psig.…

A: Given that, Temperature of the isothermal process, T=90 °F=305.372 K,Initial pressure of air, P1=85…

Q: Please state the assumptions and tables.

A: From first law of thermodynamics:∫δQ=∫ δW⇒QH.-QL.=W.where,QH.=Heat associated with high temperature…

Q: A certain fluid at 10 bar is contained in a cylinder behind a piston. The initial volume being 0.05…

A: The heat exchanger is a device used to transfer heat from one fluid to another fluid. For heat…

Q: I need complete solution (step by step process) with given. Thanks Note: Instead of using g = 9.81…

A: Hl=1.39 mL=40 mf=0.012Q=600 L/s =0.6 m3/sg=9.806 m/s2

Q: Oxygen (molar mass 32 k g / k m o l ) expands reversibly in a cylinder behind a piston at a constant…

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Q: In a piston subjected to a constant temperature T=125°C, there are 20 grams of water with a quality…

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Q: occupying 0.09 m3 is compressed reversibly to a pressure of 9.8 bar and specific volume of  0.3…

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Q: The following processes occurs in a reveršible thermodynamic cycle: .3 1-2: Reversible polytropic…

A: As given in the question that system first goes through reversible polytropic compression. Then the…

Q: the heat added. A gas undergoes a thermodynamics cy

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Q: The following processes occurs in a reversible thermodynamic cycle: 1-2: Reversible polytropic…

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Q: Q/Fluid at 15 bar is contained in a cylinder behind a piston, the initial volume being 0.01 m3.…

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Q: A boiler is used to generate steam.  Water enters the boiler, saturated at 44°C at an unknown flow…

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Q: Integration of dQ/S is less than zero for irreversible process Select one: O True O False

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Q: ideal gas with a molecular mass of 32 is contained in an inflexible tank. It is heated from 244.32…

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Q: 1. An ideal gas whose mass is 1.36 kg m, R = 204.51 J/kg m and k = 1.6667. Heat added during a…

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Q: A pump is used to circulate hot water in a home heating system. Water enters the well-insulated pump…

A: The solution to the above problem is given below

Q: A refrigeration compressor with a C.O.P is 5.5 is driven by a motor with an output of 8 kW. Assuming…

A: Given that: COP of the refrigerating device = 5.5 The compressor is powered by a motor with 8 kW…

Q: The following processes occur in a reversible thermodynamic cycle: 1-2: 0.2 kg heating at constant…

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Q: Find an appropriate expression for the change in entropy in the following two cases: 1) S=S(TV) 2)…

A: Given: Temperature = T Pressure =P Volume =V Cv =sp. heat at constant volume CP = sp. heat at…

Q: Use the deal gas law to find the temperature rise/drop in the air (M = 18.57 kg/kmol) for the…

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Q: gas initially at 15 psia and 2 cubic feet undergoes a process to 90 psia and 0.60 cubic feet, during…

A: Given:P1=15 psiaV1=2 ft3P2=90 psiaV2=0.6 ft3∆H=15.5 BtuCv=2.44 Btu/lb.R

Q: A stationary insulated rigid tank contains 1kg of an ideal gas with Cy = 0.7 kJ/KgK and Cp = 1…

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Q: Consider a turbine operating at steady-state with the operating conditions shown in the figure.…

A: (a) Write the formula for the net power generated in the turbine. W˙net=m˙h1-h2 Here, m˙ is the mass…

Q: Unit mass of a fluid at a pressure of 4 bar, and with specific volume of 0.18m/kg, contained in a…

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Q: During their experimentation, a group of engineering students employed an unknown substance with a…

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Q: Consider the series of processes shown in the p-V diagram below for a piston-cylinder system. Given…

A: From the process 2 to 3, The work done in a process is the area under the curve in PV diagram.

Q: The following processes occur in a reversible thermodynamic cycle:   1-2: 0.2 kg heating at…

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Q: A gas whose composition is not known has 42.2k) of paddle work input at constant volume of 566L.…

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Q: In a piston cylinder system, a fluid at 0.8 bar occupying 0.07 m³ is compressed reversibly to a…

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Q: In a piston cylinder system, fluid at 0.8 bar occupying 0.07 m³ is compressed reversibly to a…

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Q: reversibly to a pressure of 9.5 bar and specific volume of  0.3 m3/kg according to the law pvn = c.…

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Q: occupying 0.08 m3 is compressed reversibly to a pressure of 10.9 bar and specific volume of  0.6…

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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.