and a = 0.0166 m-/h. Calculate the time required for the temperature change to reach half its final value.

Q: A compressor takes in refrigerant R-134a at a pressure of 23.8 psia andcompresses it to 122.8 psia.…

A: Given Data⇒ Refrigerant R-134 a Suction pressure Psuction=23.8 PSia Discharge pressure…

Q: The volume and temperature of a gas at the beginning of expansion are 0.0056m3 and 183°C,…

A:

Q: Determine the quantity (volume) of saline water in a steam generator. The heat energy of 1525 kJ is…

A:

Q: At a power plant, superheated steam at 560°C  is used to drive a turbine for electricity generation.…

A: Given   Maximum temperature, Tmax = 560°C    Minimum temperature, Tmin = 38°C Find  Energy…

Q: A 5-hp pump compressor delivers oxygen at a rate of 30 cubic feet per minute. The pressure and…

A: Given data: Power consumed by compressor = 5 hp = 3.73 KW                     Discharge rate = 30…

Q: Liquid A has a density of 0.85 kg/m3 and a specific sensible heat capacitance (Cv) of 2.2 kJ/kgK.…

A:

Q: Two kilograms of water is contained in a piston-cylinder device where a linear spring is attached to…

A:

Q: In the figure below a piston is free to move and will not exit the cylinder. Initially the cylinder…

A: Given Data Mass of air at state 1 is :m=2 kg Initial pressure is : P1=1.5 bar Initial temperature…

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.