Overheat protection device and overheat protection method for heat absorber for solar photothermal conversion

A technology of light-to-heat conversion and overheating protection, which is applied in the direction of thermal insulation of solar thermal collectors, solar thermal devices, solar thermal collectors, etc. and other problems, to achieve the effect of increasing the total annual power generation, reducing the temperature, and increasing the economic value.

CN105423576BActive Publication Date: 2017-09-05江苏交水建智能装备研究院有限公司
2 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2017-09-05

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses an overheat protection device of a heat absorber for solar energy photothermal conversion. The overheat protection device comprises the heat absorber, a thermoelectric conversion device, an air intake system and a control system; the heat absorber includes a thermal insulation cavity; a heat tube bundle is tightly bonded on the inner wall of the thermal insulation cavity, and is connected with the thermoelectric conversion device; air intake guide pipes and first air collecting tanks are uniformly arranged on the thermal insulation cavity in the peripheral direction; one ends of the air intake guide pipes extend into the thermal insulation cavity, and the other ends are connected with the first air collecting tanks in a sealed mode; the first air collecting tanks are connected with the air intake system in a sealed mode; the control system includes a controller and thermocouples; the multiple thermocouples are uniformly distributed on the heat tube bundle; the thermocouples are electrically connected with the controller; and the controller is connected with the intake system. The device monitors the surface temperature of metal heat tubes in real time; and when the temperature exceeds a heat resisting threshold value of the metal heat tubes, the air intake system is initiated to strengthen the convection loss to reduce the temperature so as to guarantee safe operation of the heat absorber. The invention further discloses an overheat protection method of the heat absorber for solar energy photothermal conversion.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the technical field of solar photothermal power generation, in particular to an overheat protection device and an overheat protection method for a heat absorber for solar photothermal conversion. Background technique

[0002] In the field of solar thermal power generation technology, due to the low energy flow density of solar radiation resources, it cannot be directly collected and utilized. It is often necessary to gather a large area of ​​solar energy to the surface of the metal heat pipe of the heat absorber, so that the metal heat pipe The heat exchange medium flowing inside obtains heat energy, and transmits the heat energy to the thermoelectric conversion device, and then realizes the conversion of sunlight energy into electrical energy output.

[0003] When designing a solar thermal power generation system, the power of the solar thermal power generation system and Its heat sink structure. When the solar thermal power...

Examples

Embodiment Construction

[0030] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0031] Such as figure 1 As shown, the overheating protection device of the present invention includes a heat absorber 10, a thermoelectric conversion device 8, an air intake system 27 and a control system 29, and the heat absorber 10 includes an insulating cavity 12 with an upper opening, and the inner wall of the insulating cavity 12 is There are a number of heat pipe clusters attached to it, such as Figure 5As shown, the heat pipe bundle is composed of a plurality of metal heat pipes 11 connected through the collection port 31. The solar light energy received by the metal heat pipes 11 is the light energy collected by the concentrator. The concentrator can be a dish concentrator or a tower concentrator. The heat pipe cluster is connected to the thermoelectric conversion device 8 outside the heat absorber 10. The thermoelectric conversion device 8 ad...