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Solar concentrator power station of the fresnel type with improved control of the outlet steam temperature

A technology of solar concentrators and power stations, which is applied in the direction of solar collectors, solar thermal power generation, solar collectors, etc. in specific environments, and can solve problems such as energy loss and high cost, achieve utilization rate optimization, and achieve fluid temperature rise and reduce the effect of temperature change

Inactive Publication Date: 2015-09-30
COMMISSARIAT A LENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it has a relatively high cost and part of the energy that would otherwise be recovered due to defocusing of the mirrors is lost

Method used

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  • Solar concentrator power station of the fresnel type with improved control of the outlet steam temperature
  • Solar concentrator power station of the fresnel type with improved control of the outlet steam temperature
  • Solar concentrator power station of the fresnel type with improved control of the outlet steam temperature

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Experimental program
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Embodiment Construction

[0040] exist figure 1 A schematic diagram of a Fresnel-type solar concentrator power plant (hereinafter "power plant") C according to the invention can be seen in . According to the invention, the solar power plant comprises one or more vaporization receivers 2 and at least one superheating receiver 4, the vaporization receiver being separate from the superheating receiver.

[0041] The inlet of the vaporization receiver 2 is connected to a supply of liquid fluid. The liquid fluid may for example be water. For simplicity, water will be considered to be the vaporized and superheated fluid in a power station. Any other fluid capable of being superheated is also suitable, such as 1,1,1,3,3-pentafluoropropane (HFC-245fa or R245fa) used in Rankine organic cycles.

[0042] In the example shown, a power plant C is used to feed a steam turbine T. Liquid water then exits the outlet of the turbine after the thermodynamic conversion cycle. A feed pump 5 is provided to circulate wate...

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PUM

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Abstract

Solar power station of the Fresnel type comprising a vaporizing receiver (2) and a superheating receiver (4) arranged in parallel, and mirrors (8.1, 8.2) comprising first mirrors (8.1) focused on the vaporizing receiver (2) during nominal operation and the second mirrors (8.2) being focused on the superheating receiver (4) in nominal operation, mirror movement means, in which power station the superheating receiver (4) is supplied with fluid in the form of steam by the vaporizing receiver (2), said power station also comprising means for controlling the movement means, and means for measuring at least one operating parameter of the power station. The control means activate the movement means as a function of at least one operating parameter of the power station so that at least one mirror (8.1, 8.2) is focused onto a different receiver (2, 4) from the receiver on which it is focused in nominal operation.

Description

technical field [0001] The present invention relates to a direct steam generating Fresnel type solar concentrator power plant which provides improved control of the outlet temperature. Background technique [0002] A Fresnel-type solar concentrator power station consists of a receiver provided with one or more tubes through which a fluid is circulated, and the receiver is suspended above a flat mirror that reflects light onto the receiver so that Heating the fluid. [0003] A Fresnel-type solar concentrator power plant may be associated with a heat conversion device such as a steam turbine. For this purpose, the fluid discharged from the receiver is in the form of superheated or saturated steam. [0004] In order to ensure optimum operation of the turbine, the temperature of the fluid discharged from the receiver must correspond to the optimum operating temperature of the turbine. This thus implies control of the steam temperature. [0005] As noted above, the receiver i...

Claims

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Application Information

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IPC IPC(8): F24J2/16F24J2/40F22B1/00F24J2/54F24S23/70F24S23/77
CPCF22B1/006Y02E10/47F24J2/16F24J2/407F24J2/541F24S20/20F24S23/77F24S30/425F24S40/52F24S50/20F24S50/40F24S2023/872
Inventor 西尔万·罗达瓦列里·韦列尔莫
Owner COMMISSARIAT A LENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
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