Solar heat collecting device

A solar heat collection and heat collection module technology, applied in the fields of energy and electric power, can solve the problems of loss of power generation efficiency, control signal lag heat energy, uneven heating of the heat collection device, etc., to overcome the control signal lag and solve the problem of uneven heating. Effect

Inactive Publication Date: 2013-06-05
深圳市联讯创新工场科技开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is: in the solar heat collecting equipment in the prior art, the heat collecting device is heated unevenly due to the frequent and violent changes of the light intensity irradiated on the heat collecting equipment and due to the simple dependence on the working medium flow The temperature value measured by the temperature sensor at the outlet is used as the basis for controlling the speed of the driving pump, and the control signal lags behind the heat energy loss, which causes the power generation efficiency to decrease

Method used

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  • Solar heat collecting device
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Examples

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Effect test

Embodiment 1

[0057] This embodiment provides a solar thermal collector, comprising:

[0058] At least one heat collection module (11) is arranged between the inlet main pipe and the outlet main pipe, each of the heat collection modules (11) includes a hollow container with an inlet and an outlet, and a plurality of hollow containers are provided with suitable suction A pipeline through which the hot working medium flows, and a flow controller is arranged between the hollow container and the inlet main pipe and / or the outlet main pipe;

[0059] at least one driving pump, used to drive the heat-absorbing working fluid to flow into the hollow container;

[0060] It also includes a control system, controlling the flow controller to change the flow rate and / or flow rate of the heat-absorbing working fluid flowing into the hollow container;

[0061] Such as image 3 As shown, at least one heat collection module 11 is assembled to form a polyhedron structure, and the polyhedron structure is arr...

Embodiment 2

[0068] In this embodiment, the control system further includes a computing unit;

[0069] The calculation unit is based on the feedforward adjustment signal output by the feedforward adjustment unit combined with the preset temperature value T at the outlet of the heat collection module 11 stored in the control unit 0 Or / and preset pressure value P 0 , generating an adjustment signal for adjusting the flow controller;

[0070] The control system adjusts the corresponding flow controller according to the adjustment signal of each flow controller, so as to change the flow rate and / or flow rate of the endothermic working medium flowing into the corresponding hollow container.

[0071] The outlet of the hollow container is provided with an outlet temperature sensor and / or a pressure sensor for measuring the temperature and / or pressure value at the outlet of the hollow container, and the outlet temperature sensor and / or pressure sensor and the control system inter-communication c...

Embodiment 3

[0080] In this embodiment, on the basis of embodiment 1 or embodiment 2, the flow regulator is selected as a valve and / or a flow-driven pump;

[0081] When the flow regulator is a valve, the control system controls the opening of the valve to change the flow rate and / or flow rate of the endothermic working medium flowing into the hollow container;

[0082] When the flow regulator is a flow-driven pump, the control system controls the rotation speed of the flow-driven pump to change the flow and / or flow rate of the heat-absorbing working medium flowing into the hollow container.

[0083] As a variable implementation of this embodiment, each heat collection module can be provided with an inlet valve 6 and an outlet valve 7 respectively. When the temperature and pressure of the endothermic working medium at the outlet valve of a certain heat collection module increase, the control system Control the inlet valve and outlet valve to increase the opening, accelerate the speed of heat ...

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Abstract

A solar thermal collector apparatus comprising at least one thermal collector module (11). Each thermal collector module (11) comprises a hollow container (2) having an inlet and an outlet. A flow controller is arranged between the hollow container (2) and an inlet main pipe and / or an outlet main pipe. Each thermal collector module (11) also comprises at least one temperature sensor (4) and / or a light illuminance sensor (3), and is in a communication connection to a control system for measuring the temperature and / or the incident illuminance value. The control system comprises a feedforward regulator unit, which, after analysis and computation on the basis of the temperature and / or the illuminance value of each hollow container (2), generates a feedforward regulating signal for regulating each flow controller, thus altering the flow rate and / or the flow velocity of an endothermic working medium of the corresponding hollow container (2), and allowing the endothermic working medium to reach a predetermined pressure and temperature at the outlet of each thermal collector module (11). The solar thermal collector apparatus ensures uniform pressure and temperature of the endothermic working medium at the outlet of each thermal collector module (11), and obviates control signal lag.

Description

technical field [0001] The invention belongs to the technical field of energy and electric power, and in particular relates to a heat collecting device used in a solar power plant. Background technique [0002] As the global energy crisis becomes increasingly prominent, the development of new energy sources has become a common need of all mankind. Solar power generation technology is a new way to realize large-scale development and utilization of solar energy, and it is one of the effective ways to solve the global energy crisis. The heat collector used to collect solar energy is a very important part in the process of solar energy utilization. It mainly uses the liquid heat-absorbing working medium to absorb the heat of solar energy and then vaporizes at a certain temperature, and uses the heat carried by the steam to generate electricity. [0003] Tower solar power station is a kind of solar power station, which is widely used. A large number of heliostats are arranged o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24J2/40
CPCF24J2/407Y02E10/40F24J2/04F24J2/402F24J2/40F24S50/80F24S10/00F24S50/40
Inventor 孙海翔朱亮许迪窦新国钟强王威刘泉
Owner 深圳市联讯创新工场科技开发有限公司
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