A piston cylinder containes 0.1 kg air at 100 kpa, 126.85 C which goes through a polytropic compression process with n=1.3 to a pressure of 300 kpa. How much work has the air done in the process?

Q: A chiller cools liquid water for air-conditioning purposes. Assume that 2.5 kg/s water at 20°C, 100…

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Q: Air at a temperature of 500 0C is compressed at a constant pressure of 1.2MPa from a volume of 2 m3…

A: Q= U + W W at constant P = P*delta V Q = change in enthalpy at constant pressure change in enthalpy…

Q: posses for a carbon dioxide gas at 1958.76 C in kj/kg. use

A: R for CO2 =0.1889 T= 1958.76C = 2262K W= mRT m=1kg

Q: Air at 1000 Co, 1.0 MPa expands in a polytropic process with n = 1.3 to a pressure of 250   kPa.…

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Q: Q3/ A cylinder fitted with a movable piston contains water at 3 MPa, 50% quality, at which point the…

A: Given data: Pressure at initial state is P1=3 MPa, Quality at initial state is x1=50%=0.50, Volume…

Q: Air at 20℃, 100 kPa is compressed in a piston/cylinder without any heat transfer to a pressure of…

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Q: 1 kg of steam expands isentropically from 2.5 MPa & 300 Degrees Celsius to .95 MPa. Find the final…

A: following is the solution to the above problem-

Q: Number 3

A: To find change in enthalpy

Q: EXERCISES ON PROPERTIES OF STEAM 3). Ten kg of water 45 °C is heated at a constant pressure of 10…

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Q: A 1m3 tank contains 4kg of air which have undergone a constant pressure process at 728kPa to a…

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Q: 3 kg air with initial temperature of 200°C expands at a constant pressure of 4 bar to reach to a…

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Q: Consider air in a cylinder volume of 0.2 L at 7 MPa, 1800K. It now expands in a reversible…

A: Volume ratio = 8:1  V1 = . 0002 m3 P1 = 7 × 10 ^3 KPa  T = 1800 K  As volume ratio is 8 : 1 then V2…

Q: How much entropy is transferred if 200 W of thermal energy are transferred to a heat sink at 300K?

A: Consider the schematic diagram of the thermal reservoir (Heat sink) extracting heat.

Q: A closed system consists of 1 kg of air which is initially at 1.5bar and 67°C. The volume doubles as…

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Q: Air at 1000 Co, 1.0 MPa expands in a polytropic process with n = 1.3 to a pressure of 250   kPa.…

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Q: Q1: A cylinder/piston contains 0.1m³ of air at 110 kPa, 25°C. The air is compressed in a reversible…

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Q: Refrigerant R134a in piston cylinder assembly, 200 kPa in initial state pressure and in the form of…

A: Dryness fraction or quality is a parameter of the saturated vapor which is defined as the mass of…

Q: Air at 30°C Dry-bulb temperature, 40% RH enters a heating chamber at the rate of 500 cmh (cu.m/hr).…

A: Given:Air condition at the inlet, T1=30oC dbt, ϕ1= 40% RHAir volume flow rate at inlet, V1˙=500…

Q: Air at 1000 C°, 1.0 MPa expands in a polytropic process with n = 1.3 to a pressure of 250 kPa. Find…

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Q: QU/A piston-cylinder device with a set of stops initially contains 300 g of steam at 1000 Kpa and…

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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: Air at 200kPa, 3°C is contained in a cylinder behind a piston with initial volume of 0.1 m3. The…

A: Write the equation of the inside pressure. Here, Pa represents the ambient pressure, C represents…

Q: A stationary mass of gas was compressed (without friction) at constant pressure. Its state was…

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Q: Q2: A piston/cylinder initially contains air at 150 kPa, 400°C. The setup is allowed to cool to the…

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Q: 5. The piston/cylinder as shown in figure 2 contains 0.1 kg water at 500 C, 1000 kPa. The piston has…

A: Data given-. T1 = 500°C  P1 = 100 kPa  Specific volume   v1s = v1 / 2  m = 0.1 kg  Temprature of…

Q: helium in a steel tank is at 36 psia, 540 R with a volume of 4 ft^3 . it is used to fill a balloon.…

A: Given, State 1 conditions: P1=36 psiaT1=540 RV1=4 ft3 State 2 conditions: P2=18 psiaT2=540 R

Q: 100 kg/min of steam at 43 bars, 360 °C expands through a turbine isentropically until the pressure…

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Q: 3.Four kilogram of steam is initially at 1MPa and x=40% inside the piston cylinder. There is a 30C…

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Q: 2.A piston cylinder arrangement contains steam at 10MPaa saturated liquid. Heat was transferred…

A: PHigher =10 Mpa or 100 bar Plower=2 Mpa or 20 bar Now with the help of steam table we need to…

Q: Q2) A piston/cylinder has ammonia at 1600 kPa, 100°C with a volume of 0.1 m3. The piston is loaded…

A: To find: The work, heat transfer and total entropy generation. Given: The pressure is P1=1600 kPa.…

Q: A piston/cylinder has a volume of 0.05 m3 and contains steam at 500 kPa with a quality of 90%. Heat…

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Q: A gas with a mass of 0.1 Kg and a specific heat of 711.45 J/KgmK does 100 J of work on the…

A: Given:m=0.1 KgC=711.45 J/Kg.mKW=100 JQ=209.25 J

Q: Q3/ A cylinder fitted with a movable piston contains water at 3 MPa, 50% quality, at which point the…

A:

Q: -work and change

A: Find Work &  change in internal energy

Q: Air at 1000 Co, 1.0 MPa expands in a polytropic process with n = 1.3 to a pressure of 250 kPa. Find…

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Q: Water at 2.5 MPa and 200 degree celcius is heated at constant temperature up to 80% quality. Find…

A: Answer: (a)The quantity of heat received by the water is 1551.8 kJ/kg. (b) The work in non-flow…

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.