Nitrogen with a mass of 2.5 kg expands at a constant pressure. The initial pressure and temperature in the piston cylinder system is 170 kPa and 27 oC, respectively. Because of the heat transfer, the system reached a final temperature of 200 oC. Note R= 0.2968 kJ/kgK Determine: a. The heat required b. The work c. The change of enthalpy d. The change of internal energy

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A: First, determine the exit temperature at the end of the expansion process.

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Q: done during the process is

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Q: A steady-state, steady-flow compressor draws in 15 m3/min of air whose density is 1.267 kg/m3 and…

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Q: Initially, a closed system consists of 2 lb of water vapor at the temperature and volume of 300°F…

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Q: An gas whose pressure, volume and temperature are 275 KN/m³, 0.09 m³ and 365 °F, respectively, has…

A: GivenP=275 kN/m2=275kPaV=0.09m3T1=365oF=458.15KT2=15oC=288KR=0.29 kJ/kgKCp=1.005kJ/kgK

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: 2 kg of air, which can be modeled as an ideal gas, undergoes an isothermal process from 1.3bar and…

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Q: Problem 2: A piston-cylinder device contains 50 kg of water at 250 kPa and 25 °C. The…

A: Given data:    mass of water, m=50kg    Initial pressure,P1=250kpa=P2    Initial temperature,…

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A:

Q: Three pounds mass of water in a piston-cylinder assembly, initially a saturated liquid at 35 lb/in²,…

A: Solution:

Q: An gas whose pressure, volume and temperature are 275 KN/m³ , 0.09 m³ and 365 °F, respectively, has…

A:

Q: Q3: A- 0.5kg/s of a fluid flows in a steady state process. The properties of fluid at entrance are…

A:

Q: An gas whose pressure, volume and temperature are 275 KN/m³ ,0.09 m³ and 365 °F, respectively, has…

A: Given Data  Initial state of the gas P1=275KN/m2 V1=0.09 m3 T1=365F=458.15K T2=15C=273.15+15=288.15K…

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A: Option d is correct.

Q: An air compressor handling 300 m³/min increases the pressure from 1 bar to 2.3 bars and heat is…

A: Given Data  Discharge rate, Q=300 m3/min=5m3/s Inlet pressure, P1=100Kpa Outlet pressure, P2=230KPa…

Q: A piston cylinder device contains 0.2 kg of air initially at 0.06 m³ and 3 bar. The air is first…

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Q: Heat in the amount of 7.5 kJ is added to a closed system while its internal energy decreases by 12…

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Q: Q19: A stationary mass of gas is compressed without friction from an initial state of 2 m3 and 2 x…

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Q: 3.1) A plunger-cylinder that initially contains 0.55 kg of air at a temperature of 250 °C and a…

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Q: Two kilograms of water execute a Carnot power cycle. During the isothermal expansion, the water is…

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A: Option c is correct. The final volume will be 0.2167 liter

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Q: 40 kg of air at 345 kPa is contained a rigid vessel at temperature 20 deg.C, heat is then applied…

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A: as per guideline i have to solve only three subpart of your question

Q: Air with cv = 0.723 KJ/Kgm - °R is compressed in a piston-cylinder machine according to pV1.3 = c…

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Q: An auditorium which is 5m wide by 15m long and a ceiling of 3m. The initial air is maintained by air…

A: Given, V1 = 5 x 15 x 3 m3 =225 m3 P1 = 101.3 kPa =101.3 X 1000 Pa T1 = 22 °C = 22+273 = 295 K P2 =…

Q: to x2 = 90

A:

Q: 7.A system contains 0.15 m3 of a gas at a pressure of 3.8 bar and 150 C. It is expanded…

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Q: Two kg of helium operate on a three-process cycle where the processes are: constant volume (1-2);…

A: Given data:- Three process cycle P1 = 100 kpa T1 = (300 + x) X = 22 T1 = 322 k V1/V3 = 5   Find :-…

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Q: Four pounds of steam initially dry and saturated expand isentropically in a non-flow process from an…

A: Given: Mass of the steam, ms=4 lb initial pressure, P1=275 psia final pressure, P2=125 psia

Q: volume 3 → 1: constant-temperature compression .The necessary information is T1 = 100°C, T2 = 600°C,…

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Q: Q2/0.5 kg of air it pressure 1.2 bar and volume 0.4 m' compressed isothermally, then compressed…

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Q: 1. Ten cu ft of air at 300 psia and 400°F is cooled to 140°F at constant volume. What are (a) the…

A: Given data as per question T1=4000F=477.59 k=859.67 0RT2=1400F=333.15k=599.67 0R

Q: A piston -cylinder containing steam at 700 Kpa and 250 C undergoes a constant pressure process until…

A: given data: p1= 700kpa T1= 250°C X= 0.6 P1=P2 Find: Work done Heat transferred ΔU ΔH

Q: 5 lbm of air expands inside a piston cylinder configuration at a constant pressure of 24 psia.…

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Q: A 800 J of work is done by a system, while 500 J of heat is removed from the system.

A: Given that, Work done by the systen, W=800 J,Heat removed from the system, Q=-500 JNegative sign is…

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A: To know the behavior of gases in various conditions, various assumptions are made because in real…

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.