Device and method for measuring heat flux density with thermal radiation shielding
A heat radiation shielding and heat flux density technology, applied in the direction of measuring devices, measuring heat, calorimeters, etc., can solve the problems of affecting temperature difference, high cost, large thermal resistance, etc., to reduce measurement errors, simple structure, and improve accuracy Effect
Active Publication Date: 2021-11-30
XI AN JIAOTONG UNIV
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Problems solved by technology
Among them, by measuring the electric power of the heating plate in the thermoelectric power generation device instead of the heat flow flowing into the thermoelectric power generation device, a large error will often occur because of the inevitable Joule heat generated on the wire, and the heating plate itself has a certain thickness. The heat loss cannot be ignored
Secondly, using a heat flow sensor to measure the heat flow flowing into the thermoelectric power generation device has high sensitivity, but the heat flow sensor has a complicated manufacturing process and high cost, and the thermal resistance is large, which will affect the temperature difference applied to both ends of the thermoelectric power generation device. size
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[0037] The following will refer to the attached figure 1 to attach Figure 10 Specific examples of the present invention are described in more detail. Although specific embodiments of the invention are shown in the drawings, it should be understood that the invention may be embodied in various forms and is not limited to the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.
[0038] It should be noted that certain terms are used in the specification and claims to refer to specific components. Those skilled in the art should understand that they may use different terms to refer to the same component. The specification and claims do not use differences in nouns as a way of distinguishing components, but use differences in functions of components as a criterion for distinguishing. "Includes" or "comprises" mentioned th...
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Disclosed is a heat flux measuring device and method with thermal radiation shielding. In the device, the lower surface of the thermal resistance layer is close to the heat source, the upper surface is close to the cold source, and the shielding layer is arranged around the side surface of the thermal resistance layer and separated from the thermal resistance layer. A predetermined distance, the cross-section of the thermal resistance layer and the shielding layer form a "mountain" structure, a thermocouple is inserted into the thermal resistance layer for measurement to measure temperature data, the measurement unit is connected to the thermocouple, and the measurement unit generates heat flow based on the temperature data density.
Description
technical field [0001] The invention relates to the technical field of heat flux density measurement, in particular to a heat flux density measurement device and method with thermal radiation shielding. Background technique [0002] The research on green new energy and sustainable development energy continues to deepen, such as thermoelectric power generation, solar power generation, wind power and so on. Among them, the thermoelectric power generation technology utilizes the Seebeck effect of thermoelectric materials, and only needs to apply a heat source to the hot end of the thermoelectric power generation device to generate a temperature difference between the two ends to generate electricity. In the process of research on thermoelectric power generation technology, it is often necessary to accurately measure the heat flux flowing into the hot end of the thermoelectric power generation device, so as to guide the device to improve and optimize the design and improve the e...
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IPC IPC(8): G01N25/20G01K17/00
CPCG01K17/00G01N25/20
Inventor 何海龙方振煊吴翊纽春萍荣命哲
Owner XI AN JIAOTONG UNIV