Global sensitivity analysis method of single-stage thermoelectric refrigeration system based on moment independence

A sensitivity analysis, thermoelectric refrigeration technology, applied in the fields of refrigerators, refrigeration and liquefaction, machine operation, etc., can solve the problems of lack of information, not considering the distribution information of input variables, etc., to improve reliability and reduce uncertainty Effect

Pending Publication Date: 2019-09-06
NORTHWESTERN POLYTECHNICAL UNIV
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Problems solved by technology

Among many global sensitivity analysis methods, variance-based sensitivity analysis is currently the most widely used global sensitivity analysis method due to its ease of calculation. However, the variance sensitivity index only uses the variance to measure the uncertainty of the model output variables, without considering the input The full distribution information of the variable, so some information may be missing

Method used

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  • Global sensitivity analysis method of single-stage thermoelectric refrigeration system based on moment independence
  • Global sensitivity analysis method of single-stage thermoelectric refrigeration system based on moment independence
  • Global sensitivity analysis method of single-stage thermoelectric refrigeration system based on moment independence

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Experimental program
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Effect test

Embodiment

[0104] The original logarithm of the single-stage thermoelectric refrigeration system takes N=127, and the design parameters of the single-stage thermoelectric refrigeration system obey the normal distribution, as shown in Table 1.

[0105] Table 1 Design parameters of single-stage thermoelectric refrigeration system

[0106]

[0107] The sample size is 1×10 4 , the moment-independent sensitivity index of the design variables of the thermoelectric refrigeration system to the cooling capacity is as follows: image 3 As shown, the variation trend of the moment-independent sensitivity index of the thermoelectric refrigeration system design variables to the cooling capacity with the sample size is as follows: Figure 4 Shown; the moment-independent sensitivity index of the design variable to the refrigeration coefficient is shown as Figure 5 As shown, the variation trend of the moment-independent sensitivity index of the design variable to the refrigeration coefficient with th...

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Abstract

The invention relates to a global sensitivity analysis method of a single-stage thermoelectric refrigeration system based on moment independence. For the global sensitivity analysis method, on the basis of considering a single-stage thermoelectric refrigeration system physical model under the influence of external heat transfer, a moment independent global sensitivity analysis model is established; an improved Monte Carlo simulation method is adopted to study independent torque sensitivity indexes of design variables for the refrigerating capacity and the refrigerating coefficient; and a single-stage thermoelectric refrigerating system is designed and improved according to a calculation result, so that the reliability of the system can be effectively improved, and important research significance and application value are achieved.

Description

technical field [0001] The technical field of automatic control of the present invention, specifically relates to the global sensitivity analysis of a single-stage thermoelectric refrigeration system. The influence of the uncertainty of input design variables on the stability of the output performance parameters of a single-stage thermoelectric refrigeration system is studied by means of a moment-independent sensitivity analysis method. It has a certain guiding effect on the design and optimization of single-stage thermoelectric refrigerators in engineering. Background technique [0002] With the rise of global energy-saving and environmental protection thoughts and the rapid development of thermoelectric materials, thermoelectric refrigeration technology has been widely used in the fields of heat dissipation of electronic components, micro-refrigeration devices, and waste heat recovery and utilization of buildings. Compared with traditional compressor refrigeration, thermoe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50F25B21/02
CPCF25B21/02F25B2321/02G06F30/20
Inventor 张峰徐夏雨程磊高洋王璐敖良波岳珠峰
Owner NORTHWESTERN POLYTECHNICAL UNIV
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