Page 13 - Design of Solar Thermal Power Plants

6 1. INTRODUCTION

multitower system shall be considered when designing the concentration
field. A single-tower system is recommended for a tower power plant that
uses molten salt as endothermic fluid because of great difficulties in the
high-temperature molten-salt transmission process, poor reliability, and
high pipeline cost.
The turbine and boiler configuration, model selection of main auxiliary
facilities, major production process system, and main powerhouse layout
in the power plant shall be determined through technical and economic
analyses. While satisfying the safe, economical, and reliable operation of
the power plant, the system and/or layout can be simplified in an
appropriate manner.

1.1.5 Control of Power Plant Influences on the Environment

In designing the power plant, it is necessary to indicate the disposal
plan for the concentrator as well as the thermal storage and heat transfer
materials, especially thermal storage medium to be used in large
amounts. The working medium of water/steam for heat transfer and
thermal storage is very environmental friendship.
If landscaping is damaged during concentration field construction, a
land restoration program shall be provided.
Wastewater, sewage, light pollution, noise, and all kinds of other pol-
lutants shall be prevented, controlled, and discharged by implementing
and executing national laws, regulations, and standards for environ-
mental protection, and the relevant rules for labor and industrial hygiene
must be tallied. These items can only be discharged by satisfying the
respective standards.
Engineering facilities for pollutant prevention and control as well as
labor and industrial hygiene facilities must be designed, constructed, and
placed into operation with the core work on a simultaneous basis.

1.1.6 Power Plant Seismic Resistance and Windproof Design

The solar collection system consists of concentrators and receivers.
Concentrators use optical equipment with high precision requirements.
Any deformation of the foundation or supporting structure of the
concentrator will greatly influence the precision of the concentrator and
have major impacts on the overall working conditions of the power plant
and could even result in scrapping of the concentration field. The seismic
design of the concentrator shall be based on the hundred-year earthquake.
The design of the receiver tower must be conducted by executing the
current China state standard. Seismic resistance shall also be considered
during design of the power plant’s concentrator.
Wind-resistant design for the concentrator and receiver tower of a CSP
power plant shall be conducted according to the hundred-year wind scale
of the plant’s applicable locality.