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/ºF. Determine the heat if the temperature changes from (a) 220°C to 475°C and (b) 475 R to 1220 R. Given: U= 25 + 0.7t (ft-lb/ºF)

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