Page 130 - Design of Solar Thermal Power Plants

CHAPTER
3

General Design of a Solar

Thermal Power Plant

3.1 POWER PLANT DESIGN POINT

3.1.1 Significance of Design Point
Design point is a primary parameter in concentrating solar power (CSP,
also known as solar thermal power) plant design and can be referred to
when defining the area of the concentration field, thermal receiver ca-
pacity, thermal storage capacity, the rated capacity of the power generator
unit, and the power plant’s annual power output, as well as other key
parameters such as the efficiencies of various equipment. The definition
of design point is explained in detail in the chapter 1.2.3 of this book.

3.1.2 Calculation Examples of Applying the Design Point
Design point is related to the longitude and latitude of the power plant,
annual mean ambient air temperature, local annual mean wind speed,
annual mean solar direct normal irradiance (DNI), and other natural
conditions. Normally, CSP plant design requires taking the solar time
midday on typical days, such as the spring equinox, autumnal equinox, or
summer solstice, during a typical year as the time mark for the design
point. The Badaling CSP plant in China has a power generation capacity
of 1 MW, which means that its power generation capacity at the design
point is 1 MW.
Energy balances for various system units at the design point are shown
in Table 3.1.

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https://doi.org/10.1016/B978-0-12-815613-1.00003-1 117 Published by Elsevier, Inc. under an exclusive license
Design of Solar Thermal Power Plants
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