A heat engine whose maximum theoretical efficiency is 25% draws heat grom a hot reservoir (source) at 127 degree Centigrade . At what temperature will it reject the heat to sink ?
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EFFI.=25%=25/100=1/4
NOW WE KNOW EFF.= 1-T2/T1 THEREFORE 1/4= 1-T2/T1 HERE GIVEN T1=127=127+273=400K THUS, 1/4=1-T2/400 OR T2 = 200K WHICH IS THE REQUIRED TEMPERATURE
NOW WE KNOW EFF.= 1-T2/T1 THEREFORE 1/4= 1-T2/T1 HERE GIVEN T1=127=127+273=400K THUS, 1/4=1-T2/400 OR T2 = 200K WHICH IS THE REQUIRED TEMPERATURE
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