815. 4 refrigerator engines and the second law of thermodynamics 1. The refrigerator engines P O W<0 W total/g 2Hl-ea 2c 0H=e +w T 815.4 refrigerator engines and the second law of thermodynamics Define the coefficient of performance: K H 1 a perfect refrigerator engine is one that has an infinite coefficient of performance. It does not violate the first law of thermodynamics 2. The second law of thermodynamics A perfect refrigerator engines(K-oo) do not exI st 1010 §15.4 refrigerator engines and the second law of thermodynamics 1. The refrigerator engines QC TC V P W < 0 Q Q W Q W Q Q H C H C = + total = = − Define the coefficient of performance: 1 1 − = − = = C H C H C C Q Q Q Q Q W Q K A perfect refrigerator engine is one that has an infinite coefficient of performance. It does not violate the first law of thermodynamics 2. The second law of thermodynamics A perfect refrigerator engines (K=∞) do not exist. §15.4 refrigerator engines and the second law of thermodynamics