Parabolic trough type solar thermal collector efficiency dynamic test device and method

A technology of solar heat collectors and trough heat collectors, which is applied in the direction of testing optical properties, can solve the problems of lack of adjustment and high-precision control, and achieve the effects of expanding the range of heat utilization, easy realization, and expanding test conditions

Pending Publication Date: 2019-06-07
CHINA JILIANG UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

Moreover, unlike laboratory test conditions, field test conditions often lack corresponding adjustments and high-precision control equipment to stabilize the inlet temperature of the trough collector within 2%.

Method used

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  • Parabolic trough type solar thermal collector efficiency dynamic test device and method
  • Parabolic trough type solar thermal collector efficiency dynamic test device and method
  • Parabolic trough type solar thermal collector efficiency dynamic test device and method

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Embodiment Construction

[0052] The present invention will be further described below in conjunction with drawings and embodiments.

[0053] like figure 1 As shown, the specific implementation of the present invention includes a trough heat collector 2, a circulating oil pump 4, a high oil tank 5, a circulating water pump 7, a cooling water tank 10, a cooling water flow regulating valve 11, an electromagnetic flowmeter 12, a plate heat exchanger 14, a vortex Street flow meter 16 and heat transfer oil flow regulating valve 17; the plate heat exchanger 14 is placed in the thermal insulation box 15, and the output end of the pipeline on one side of the plate heat exchanger 14 is connected to the input end of the circulating oil pump 4, and the circulating oil pump 4 The output end of the trough collector 2 is connected to the input end of the trough collector 2 through the vortex flowmeter 16 and the heat transfer oil flow regulating valve 17 in turn, and the output end of the trough collector 2 is conne...

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Abstract

The invention discloses a parabolic trough type solar thermal collector efficiency dynamic test device and method. A plate type heat exchanger is connected with a circulating oil pump; the circulatingoil pump is connected with the input end of a trough type thermal collector through a vortex shedding flowmeter and a heat conduction oil flow regulating valve; the trough type thermal collector is connected with the plate type heat exchanger through an elevated oil tank; the plate type heat exchanger is connected with a cooling water tank; the output end of the cooling water tank is connected with the plate type heat exchanger through a circulating water pump, a cooling water flow regulating valve and an electromagnetic flowmeter; cooling water enters the plate type heat exchanger, takes away heat and then flows back to the cooling water tank; under a single-axis tracking mode, the trough type thermal collector collects solar radiation energy and converts the solar radiation energy intothermal energy for temperature rise test; and physical quantities acquired by sensors are recorded and uploaded, and the efficiency of the trough type solar thermal collector is calculated. With the dynamic test method of the invention adopted, test conditions can be extended, and a parabolic trough type solar thermal collector efficiency dynamic test can be carried out accurately. The test deviceand method are suitable for testing the efficiency of high-light concentrating trough type solar thermal collectors under complicated and changeable weather.

Description

technical field [0001] The invention relates to a device and method in the field of parabolic trough solar linear concentration field, in particular to a device and method for dynamically testing the efficiency of a parabolic trough solar heat collector. Background technique [0002] According to the development roadmap of solar thermal utilization, the basic goal of China's solar energy application development is: in 2020, 2030 and 2050, solar energy applications will replace fossil energy by more than 150 million, 310 million and 860 million tons of standard coal respectively, of which electricity will be provided 150 billion, 510 billion and 2.1 trillion kWh, respectively. The specific form of the development route of solar thermal utilization: before 2020, the application of solar water heating system will still be the mainstream application method, and about 60% of buildings will install solar water heating system; meanwhile, the application of solar heating and cooling...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M11/02
Inventor 陈兵役陈乐富雅琼曾涛
Owner CHINA JILIANG UNIV
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