Huadian Technology ›› 2017, Vol. 39 ›› Issue (4): 74-76.

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Study on the selection method of direct normal irradiance design points for tower molten salt solar thermal power generation

  

  1. Northeast China Power Engineering Company Limited of China Power Engineering Consulting Group Corporation, Changchun 130021, China
  • Published:2017-04-25

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Abstract:

According to the technical features of tower solar thermal power generation, taking the 50MW installation capacity as a computation model, and on the basis of solar energy resource conditions of a certain area, different direct normal irradiances (DNI) are chosen as the design points, and together with different solar multiples (SM) and thermal storage times, several allocation plans are formed. Taking the same annual utilization hours as boundary condition and taking the minimum unit price as optimization target, this paper simulated and filtered the allocation plans. The results shows that different annual power generating requirements need different allocation plans. Even in same area, different annual power generating capacities need different design points. The design points is a necessary condition to confirm the day lighting area at concentrated field under a certain SM, and through the optimization design of spotlight, heat absorption, heat storage and generating unit capacity, the day lighting area at concentrated field could be confirmed. At last, the confirmation of design point could provide a reference for the equipment selection in the design of spotlight and heat storage systems.

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