Question

Please!! I really need help fast. One of our CBE seniors has proposed that she could use a Carnot Cycle heat engine on the moon to generate electricity to power her project. She has found that the temperature ranges from 107 °C (direct sunlight) to -153 °C (shade). Using helium as the working fluid (MW = 4, ĉp = 2.5R), it is noted that the entropy change during the isothermal heat addition step is 1.58 kJ/kmol·K.
(a) How much heat is added from the high temperature thermal energy reservoir (kJ/kmol)? [Correct answer from review is 600 kJ/kmol]

(b) If the Carnot Cycle heat engine contains 1.25 kg of helium calculate the work interaction term for the adiabatic reversible expansion step (kJ). [Correct answer from review is -1013 kJ]

Answer 1

DELTA/Po No. Deto T. EM alet loul be heat added casnot heat erqind ans tael is heat hk e et heat enne ange My NoteBook Sign