Q2. Air in a closed vessel of fixed volume 0.15m³, its pressure is 10 bar and at temperature 250°C. If the vessel is cooled so that the falls to 2.5 bar, pressure determine the final temperature, and the heat transferred. Take (Cv = 0.71 kJ/kg .K, R = 0.286 kJ / kg.K).

Q: A wind tunnel extracts atmospheric air at 20 °C and 101.3 kPa through a large fan located near the…

A: The pressure in the tunnel. Given: The atmospheric pressure is P1=101.3 kPa. The temperature of the…

Q: As part of a processing of biofuels, water is pumped into a circular tank with a diameter Dt. as…

A: For solution refer below images.

Q: Q1. In a piston-cylinder assembly attached with spring load is filled with 60 kg of water at…

A:

Q: Saturated steam vapor at 250 degree celcius moves along its isothern until the pressure become 1mpa.…

A: We have to find  a.  Initial pressure b. Change of enthalpy c. Entropy

Q: Artificial diamonds can be made using high-pressure, high-temperature presses. Suppose an artificial…

A:

Q: Air undergoes an isochoric process from T1 = 300°C to T2 = 250°C as an ideal gas in a closed system.…

A: Given data: The process is isochoric, so V1=V2 The initial temperature is T1=300°C=573 K The final…

Q: An oxygen tank has a volume of V = 3.00 m3. The gage pressure of oxygen in the tank is Pgage =…

A: Given Data: Volume of Tank VT=3 m3 Gage the pressure of oxygen Pg=400 kPa The atmospheric pressure…

Q: 4. A rigid tank contains 2 kg of air. The tank is initially at 25°C. The tank is heated until the…

A: Given The mass of the air is m=2 kg. The initial temperature of air is Ti=25°C. After heating the…

Q: A closed system contains air (assumed to be ideal gas) at a pressure P=300 kPa and temperature T=400…

A:

Q: Air undergoes an isothermal expansion as an ideal gas in a closed system.  The air pressure…

A: In an isothermal process, temperature of the system remains constant.

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.