Method and apparatus of solar central receiver with boiler and super-heater

a solar energy receiver and central heating technology, applied in the field of methods and equipment, can solve the problems of not being able to achieve the effect of cooling, not being able to take less energy flux, and not being able to control the solar energy flux, so as to achieve the effect of avoiding thermal stresses and high solar flux density

Inactive Publication Date: 2008-04-03
ZHU YANONG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0009]The separated boiler and super heater plus the helix parallel super heater absorb allow the receiver to take much higher solar flux density and avoid the thermal stresses.

Problems solved by technology

The solar energy flux is not a constant or controllable during the operating hours.
The super heater is working at higher temperature and the coolant is steam, which is far less effective of cooling than water, but on the other hand, it required taking less energy flux.
When the absorber is cooled with mixed water and steam, the maximum energy density is limited as when it is cooled by steam only.

Method used

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  • Method and apparatus of solar central receiver with boiler and super-heater
  • Method and apparatus of solar central receiver with boiler and super-heater
  • Method and apparatus of solar central receiver with boiler and super-heater

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Embodiment Construction

[0014]The central receiver system is illustrated in FIG. 1. A solar tower central receiver assembly contains a boiler 104 and a steam super heater 102. A drum 103 interconnects the boiler and super heater, and is for separating the steam from water. With well-controlled thermal dynamic properties and income solar flux density, the receiver is designed to take much higher energy density, and tolerate more on thermal stresses.

[0015]The boiler assembly as illustrated by FIG. 2 is constructed with four major components: the water chamber 204, the drum for separating water and steam 201, parallel absorb pipes 202 and circulation pipes 203.

[0016]The water chamber 204 is at the bottom of the boiler and drum 201 is at the top of the boiler. The parallel absorb pipes 202 are between the water chamber and drum with one end connected to water chamber 204 and another end connected to drum 201.

[0017]Water feed into water chamber 204, heated up when it is flowing through the absorb pipes 202 by t...

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PUM

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Abstract

A solar tower central receiver with separated boiler and Super-Heater allows better control on the output steam's temperature. The boiler takes higher solar flux density and works at lower temperature while the Super-Heater takes lower solar flux and works at high temperature to optimize the cost to performance ratio. The solar fluxes of the boiler and super-heater are adjustable through the pointing of the heliostats. The boiler consists of parallel pipes as solar absorber and the Super-Heater consists of helix parallel pipes as solar absorber. The steam drum chamber interconnects boiler and Super-Heater. The absorb pipes and circulation pipes are connected to water chamber, steam drum chamber, and Super-Heater chambers. The water level sensor and temperature sensors provide information regarding the operating status of the receiver.

Description

BACKGROUND OF THE INVENTION[0001]The present invention broadly relates to a central solar energy receiver and more particularly it relates to a solar energy receiver assembly for receiving radiant energy and generating steam from water. In a particularly preferred embodiment of the invention, it relates to a central solar energy receiver assembly for use in the solar tower power plant.[0002]The present invention relates to a central solar receiver with separated boiler and steam super heater for solar tower thermal power plant.[0003]The solar energy flux is not a constant or controllable during the operating hours. The solar flux various from daytime to evening, from summer to winter, and from good to bad whether, resulting that received energy density on central receiver is not constant, and is depending on the azimuth angles. The central receiver requires special cares before the optimized performance to cost ratio and high reliability to be reached. A high performance solar centr...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): F24J2/42F24S90/00
CPCF24S20/20Y02E10/40
Inventor ZHU, YANONG
Owner ZHU YANONG
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