Home » Thermodynamics » Thermodynamics Miscellaneous » Question
  1. A solar energy based heat engine which receives 80 kJ of heat at 100°C and rejects 70 kJ of heat to the ambient at 30°C is to be designed. The thermal efficiency of the heat engine is
    1. 70%
    2. 18.8%
    3. 12.5%
    4. Indetermine
Correct Option: C

ηth =
( 80 - 70 )
× 100 =
1
× 100 = 12.5%
808



Your comments will be displayed only after manual approval.