Q4/ An air compressor requires shaft work of 200 kJ/kg of air and the compression of air causes increase in enthalpy of air by 100 kJ/kg of air. Cooling water required for cooling the compressor picks up heat of 90 kJ/kg of air. Determine the heat transferred from compressor to atmosphere.

Q: Q2: A perfect gas has a kinetic energy at inlet the compressor 8 m/s at rate of 0.35 kg/s, where the…

A: Given ,  At the inlet to compressor- C1  = 8 m/s         m =0.35 kg/s         v1 = 0.77 m3 /kg…

Q: 3. A work done on the steady flow system is 30 kJ/kgm. Calculate the heat in HP if the mass flow…

A: Given:W=-30 KJ/Kgm=10 Kg/minu1=10 KJ/Kgu2=20 KJ/Kg

Q: m = 70 kg/s P₁ = 40 kPa Saturated Liquid Water W = 140 kW 2 Q = 302 MW Boiler 3

A: (a) To find: The boiler pressure. Given: The pressure at the entry of the pump is P1=40 kPa. The…

Q: (b) Steam at 4 MPa and 400 °C enters a nozzle steadily with a velocity of 60 m/s, and it leaves at 2…

A:

Q: In turbochargers a turbine is directly connected to a compressor. The power harvested by the turbine…

A:

Q: 200Kg/min superheated steam at 40 bar and 350C enters a turbine through a 7.5cm ID pipe. It exits at…

A:

Q: rom the turbine the heat loss per kg of steam flow rate is 5 kW. Find the power developed in kW by…

A: Given:Heat loss, Q=-5 kWFor inlet steam, h1=3250 kJ/kgvelocity, v1=180 m/sFor exit steam,h2=2360…

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.