Abstract:

Solar thermal power generation generates electricity in an environmental, pollutionfree and renewable way. It is of adjustable power output, but is of a higher cost than wind power and solar photovoltaic power at present. Solar thermal power generation can be divided into solar concentrating, heat absorbing, changing heat and heat storage. Quantitative analysis on the minimum cost of the 4 procedures are carried out separately. It is found that the material price of solar field, efficiency of solar thermal power system and construction exert regular impacts on the stability of the power  generation and so does the unit cost of power station. By improving the efficiency of solar thermal power generation system, controlling the construction fee according to local climate conditions, controlling the financing costs, material and the material price for solar field, the investment for the whole system can be reduced.

Key words:

solar energy, thermal power generation, solar tower field, heat absorption, heat exchange and heat storage, investment reduction