Year round performance and economic evaluation of solar power plant for Indian tropical condition.

In this paper, a 50 MWe design capacity solar parabolic dish concentrator Stirling engine power plant (SPDCSPP) has been modeled for analysis, where 2000 units of 25 kWe parabolic dish concentrator each considered for getting desired capacity. An attempt has been made to carryout the economic evaluation of SPDCSPP for selected Indian tropical condition. Variations of the efficiency of Stirling engine power plant at the variation of the load conditions are considered for year round performance evaluation. The developed model is examined for Indian location, i.e., Delhi. It is found that year round collector-receiver efficiency varies from 69.43% to 77.88%, and overall power plant efficiency varies from 16.86% and 25.79%. The installation cost per MWe electrical capacity is 15.32 crore rupees, and 28.10 lakhs rupees as operation and maintenance cost per MWe electrical capacity. The unit cost of electric energy generation (kWhe) is about 11.06 Indian rupees, with 30 years lifespan of the plant and 10% interest rate on investment. [ABSTRACT FROM AUTHOR]