Converting sunlight to electricity with solar cells has an. efficiency of 15%. I

Question

Converting sunlight to electricity with solar cells has an. efficiency of 15%. It's possible to achieve a higher efficiency (though currently at higher cost) by using concentrated sunlight as the hot reservoir of a heat engine. Each dish in (Figure 1)concentrates sunlight on one side of a heat engine, producing a hot-reservoir temperature of 600 degree C. The cold reservoir, ambient air, approximately 26 degree C. The actual working efficiency of this 30%. Part A What is the theoretical maximum efficiency? Express our answer using two significant figures. e_max = ______ %

Explanation / Answer

Theoretical maximum efficiency

emax=1- Tc/Th

1- 299.16/873.16

Theoretical Emax =approx 65.73%

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