A prototype engine was built and tested, during the non-flow process it is observed that the Work per degree temperature is given as 80 ft-lbf/°F. Determine the heat if the temperature changes from (a) 290°C to 685°C and (b) 375 R to 1695 R.  Given: U = 25 +0.7t (ft-lb/°F)

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Q: correctly please. I ll rate for correct answer. Don't do wrong

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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.