Molten salt heat absorber heat efficiency test system and test method

A technology of testing system and heat absorber, which is applied in the direction of solar heating system, solar collector, solar collector safety, etc., can solve the problems of high surface radiation power, difficult implementation, large manpower and material resources, etc., to achieve operability Strong, reduced size, simple structure effect

Pending Publication Date: 2020-04-03
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although this scheme is feasible, in actual operation, due to the high installation position of the molten salt heat absorber and the large surface radiation power, the manpower and material resources required for this scheme are extremely large, and it is difficult to guarantee it even if the actual test is carried out. The accuracy of the test results, so it is more difficult to implement

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  • Molten salt heat absorber heat efficiency test system and test method
  • Molten salt heat absorber heat efficiency test system and test method
  • Molten salt heat absorber heat efficiency test system and test method

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Embodiment approach 1

[0036] The first embodiment of the present invention provides a thermal efficiency testing system for a molten salt heat absorber, which is used to test the thermal efficiency of a tower-type solar thermal power generation molten salt heat absorber 5, see figure 1 , figure 2 and image 3 As mentioned above, the straight line with the arrow indicates the direction of light irradiation, and the dotted line in the figure indicates the optical axis of the reflector, including: optical path system, thermal circuit system and measurement system.

[0037]Wherein, the thermal loop system includes a receiving tower 1, which is used to convert the energy in the optical path system. A receiving window 1a is arranged on the receiving tower 1, and a molten salt heat absorber 5 is arranged at the receiving window 1a, and the receiving window The shape of 1 a corresponds to the shape of the heating surface 5 a of the molten salt heat absorber 5 . And the molten salt pump 9 connected with ...

Embodiment approach 2

[0074] The second embodiment of the present invention also provides a method for testing the thermal efficiency of a molten salt heat absorber, comprising the following steps:

[0075] S1: adjust the distance d between the radiation control disc 3a and the molten salt heat absorber 5, the first temperature sensor 6a and the second temperature sensor 6b measure the inflow port 5b and the outflow port 5c of the molten salt heat absorber 5 respectively The temperature of the molten salt working medium, the flow meter 6c measures the flow of the molten salt working medium;

[0076] S2: Move the radiation control disc 3a, adjust the distance d between the radiation control disc 3a and the heating surface 5a, adjust the molten salt pump 9 to change the flow rate of the molten salt working medium, so that the inflow port 5b of the molten salt heat absorber 5 and the flow The temperature of the outlet 5c is identical with the temperature measured in the S1 step;

[0077] S3: measurin...

Embodiment approach 3

[0113] The third embodiment of the present invention provides a method for testing the thermal efficiency of a molten salt heat absorber. The test method of this embodiment is a further improvement on the second embodiment. The main improvement is that in step S2 of this embodiment , keep the distance d between the radiation control disk 3a and the heating surface 5a constant, rotate the radiation control disk 3a, and adjust the angle A formed by the radiation control disk 3a and the plane of the heating surface 5a.

[0114] see Figure 9 As shown, by adjusting the angle A formed by the radiation control disk 3a and the plane of the heating surface 5a, the radiation power received by the heating surface 5a is changed.

[0115] Specifically, in this embodiment, the control group without the radiation control disk 3a is also measured and corresponding data are obtained. The specific calculation steps are the same as those in the second embodiment, and will not be repeated here....

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Abstract

The invention relates to the technical field of solar photo-thermal power generation, and discloses a molten salt heat absorber heat efficiency test system and a test method. The molten salt heat absorber heat efficiency test system comprises an optical path system, a heat loop system, and a measurement system. The heat loop system comprises a receiving tower for converting energy in the optical path system; the receiving tower is provided with a receiving window, and a molten salt heat absorber is arranged at the receiving window; the light path system comprises an illumination controller, aheliostat field and a reflector; the receiving tower is arranged between the heliostat field and the reflector, and the heliostat field reflects light to the reflector; the reflector reflects light tothe receiving window, and the illumination controller is arranged between the reflector and the receiving tower, so that the radiation power on the heating surface of the molten salt heat absorber can be adjusted; and the measuring system comprises a measuring device and external equipment. According to the molten salt heat absorber heat efficiency test system and the test method, the overall heat efficiency of the heat absorber can be evaluated by testing the heat efficiency of a single tube bank in different temperature intervals, and therefore the cost is low, and operability is higher.

Description

technical field [0001] The invention relates to the technical field of solar thermal power generation, in particular to a thermal efficiency testing system and testing method of a molten salt heat absorber. Background technique [0002] Solar power generation technology is an effective means to alleviate the energy crisis, and has broad application prospects. This clean and efficient utilization technology has brought new hope for coping with the global energy crisis. China is very rich in solar energy resources. If the solar energy can be used rationally, it will help to solve the energy problem. [0003] Generally, solar thermal power generation mainly includes three methods: trough type, dish type and tower type. Among them, the tower type photothermal power generation system has large capacity, high concentration ratio, high operating temperature, and high efficiency. It is one of the fastest-growing technologies at present. . For the tower solar thermal power generati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24S40/90
CPCY02E10/40
Inventor 肖刚徐有杰倪明江骆仲泱岑可法程乐鸣周劲松
Owner ZHEJIANG UNIV
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