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Global sensitivity analysis method for parameters of a two-stage thermoelectric refrigerator based on response quantity variance

A sensitivity analysis, thermoelectric refrigeration technology, applied in electrical digital data processing, special data processing applications, complex mathematical operations, etc., can solve the problems of system output performance changes, ignore the random uncertainty of thermoelectric refrigeration system parameters, etc., to improve reliability. sexual effect

Pending Publication Date: 2019-05-10
NORTHWESTERN POLYTECHNICAL UNIV
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Problems solved by technology

[0003] At present, the research on thermoelectric devices mainly focuses on the optimization problem under certain parameters, ignoring the random uncertainty of the parameters in the design and manufacturing process of the thermoelectric refrigeration system, and the research shows that the small fluctuations of some key design parameters of the thermoelectric refrigeration system will lead to System output performance varies greatly

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  • Global sensitivity analysis method for parameters of a two-stage thermoelectric refrigerator based on response quantity variance
  • Global sensitivity analysis method for parameters of a two-stage thermoelectric refrigerator based on response quantity variance
  • Global sensitivity analysis method for parameters of a two-stage thermoelectric refrigerator based on response quantity variance

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Embodiment Construction

[0056] Now in conjunction with embodiment, accompanying drawing, the present invention will be further described:

[0057] Step 1: Build a two-stage thermoelectric refrigerator model

[0058] The model is composed of n pairs of P-N semiconductor elements on the first layer and m pairs of P-N semiconductor elements on the second layer. The materials are connected so that the exothermic temperature of the second layer is equal to the endothermic temperature of the first layer. There is a series structure between the first layer and the second layer of semiconductors. The thermoelectric refrigerator works on a high temperature heat source T H and low temperature heat source T L Between, the temperature at the hot end of the thermoelectric refrigerator is T 1 , the cold junction temperature is T 2 , the connecting layer temperature between the first layer and the second layer is T m , and the heat transfer rate between the thermoelectric refrigerator and the high and low tem...

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Abstract

The invention relates to a global sensitivity analysis method for parameters of a two-stage thermoelectric refrigerating machine based on response quantity variance, the influence of fluctuation of design parameters of the two-stage thermoelectric refrigerating machine on the refrigerating performance of the two-stage thermoelectric refrigerating machine is studied through the global sensitivity analysis method, and a global sensitivity main index and a total index of the design parameters are calculated. In the actual manufacturing and using process of the thermoelectric refrigerating machine, design parameters are often fluctuated. The global sensitivity analysis can guide designers to carry out reasonable parameter design and resource distribution, and the influence of design parameterfluctuation on the system performance is reduced to the minimum, so that the reliability of the system in an uncertain environment is improved.

Description

technical field [0001] The invention belongs to the field of thermoelectric refrigeration, and in particular relates to a global sensitivity analysis method of a two-stage semiconductor thermoelectric refrigerator model. By establishing the thermodynamic equation of the two-stage semiconductor thermoelectric refrigerator, the influence of the fluctuation of the input design parameters on the global sensitivity of the output performance parameters is studied, and the design parameters are sorted according to the importance, so as to provide guidance for the design and optimization of the performance parameters of the thermoelectric refrigerator . Background technique [0002] Semiconductor refrigeration is a new refrigeration technology based on five thermoelectric effects: Seebeck effect, Peltier effect, Thomson effect, Joule effect, and Fourier effect. It has the advantages of simple structure, no moving parts, and fast refrigeration speed. The system has no refrigerant an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50G06F17/16
Inventor 张峰徐夏雨王璐王亚萌高洋敖良波岳珠峰
Owner NORTHWESTERN POLYTECHNICAL UNIV
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