9. An auditorium which is 5m wide by 15m long and a ceiling of 3m. The initial air is maintained by air conditioning units at 101.3kPa and 22°C. At some point the air conditioning unit stopped its operation and the pressure & temperature becomes 105.0773 kPa & 33°C. Assuming the auditorium is empty. Determine the following: a. The mass of air inside, in kg b. Change in Internal Energy, in kJ c. Heat gained by the air, in kJ

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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.