A certain fluid at 10 KPa is contained in a cylinder behind a piston. The initial volume being 0.5 m. Calculate the work done by the fluid when it expands reversibly. a- At constant pressure to a final volume of 0,7 m b- according to a linear law to a final volume of 1 m' and a final pressure of 2.5 bar

Q: 3. In a hot water heating system, water heated to 95°C and then is pumped at the rate of 4 L/min…

A: Given data: Q˙=4 L/min=4×10-3×60 m3/hr=0.24m3/hrT1=95°CTR=85°C Need to determine the heat released…

Q: 1.5 kg of an ideal gas undergoes a process wherein the pressure decreases from 280 kPaa to 140 kPaa,…

A: Enthalpy H=U+P.V U -internal energy P-Pressure V-Volume. Change in enthalpy H2-H1=U2-U1 +P2V2-P1V1

Q: The rigid steel tank shown in the figure contains carbon dioxide gas. Initially the tank contains…

A: Given: Mass, m = 300 kg Volume, v = 100 m3 m1=10 kg/min3t2 if 0≤t≤3 min90 kg/min        if t>3…

Q: =100°C h= 400 kJ/kg What is the state of the pure substanc

A: for water @ 100°C hf = 167.5 kJ/kg hg = 2574.3 kJ/kg

Q: Two tanks connected with each other as shown. The first one has 2 kg of water at P=200 kPa, V, = 1m,…

A: option C i.e. 0.4264 is the correct answer.

Q: A piston-cylinder device initially contains 0.8m3 of saturated water vapor at 250 kPa. At this…

A: (a)The known quantities for initial state are as follows:Volume, V1 = 0.8 m3.Pressure, P1 = 250…

Q: A Piston-Cylinder arrangement initially contains 3 kg of water as saturated liquid at 200 kPa…

A:

Q: Two tanks connected with 2. each other as shown. The first one has 2 kg of water at P=200 kPa, V, =…

A:

Q: Oxygen (molar mass 32 kg/kmol ) expands reversibly in a cylinder behind a piston at a constant…

A:

Q: In an experiment, a certain amount of air is heated at constant pressure from 1.7 m³, 38 °C and 97…

A: Given Data: Initial pressure, P1=97 kPa Initial temperature, T1=38 degrees Celsius Temperature…

Q: PROBLEM #4: A piston cylinder device contains an ideal gas changed with an initial condition of 120…

A:

Q: Oxygen (molar mass 32 kg/kmol ) expands reversibly in a cylinder behind a piston at a constant…

A:

Q: A reciprocating compressor compresses air 1/8 th times of its initial volume. If the pressure of air…

A: Given, P1 = 5 bar V2 = 0.016 m3  PV1.6 = constant n=1.6 Given that,A reciprocating compressor…

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.