Simulation and Optimization of Assembly Structure of Thermoelectric Refrigeration Box Based on SolidWorks Flow Simulation

doi:10.12096/j.2096-4528.pgt.19085

Abstract

Abstract:

In order to improve the refrigeration performance of thermoelectric refrigeration box, the common thermoelectric (semiconductor) refrigeration box on the market was analyzed, and the structure between the refrigeration assembly of the refrigeration box and the wall of the box was explored. SolidWorks Flow Simulation was used to model and simulate the structure between the refrigeration assembly and the wall of the refrigeration box. The effects of gravity, fan direction, groove size and bracket on the refrigeration performance of semiconductor refrigeration box were analyzed. It is concluded that when the groove size is fixed, the cooling performance of thermoelectric refrigeration box is optimal when the gravity direction is at the longest side of the box size, the direction of fan intake is suction and symmetrical bracket is added in the groove. The four sides of the support are cut out as many circles as possible, and the larger the circle is, the better.

Key words: thermoelectric refrigeration box, Solid-Works Flow Simulation, installation framework, optimal analysis

CLC Number:

TK172
TU831

Xiayong SHAO, Zhiguo ZHANG, Guoneng LI, Yanghui YE, Bin DENG, Qing WANG, Victor Chimdike Obinani. Simulation and Optimization of Assembly Structure of Thermoelectric Refrigeration Box Based on SolidWorks Flow Simulation[J]. Power Generation Technology, 2021, 42(3): 374-381.

Figures/Tables 12

Tab. 1 Size parameters of box body

类别	长/mm	宽/mm	高/mm	误差/mm
内尺寸	280	170	140	±0.50
外尺寸	340	230	200	±0.50

Tab. 2 Partial dimensions of refrigeration assembly

类别	长/mm	宽/mm	高/mm
制冷片	40	40	4
硅脂	40	40	0.5
散热器翅片	4	1	7
散热器底座	40	40	3
风扇外尺寸	40	40	10

Fig.1 Models of thermoelectric refrigeration assembly and thermoelectric refrigeration box

Fig.2 Architecture of thermoelectric refrigeration assembly and box

Fig.3 Flow chart of refrigeration box simulation

Fig.4 Partial simulation results of slotting and slotting of thermoelectric refrigeration box

Fig.5 Change of average temperature of fluid in box under different gravity directions without support in "41.7 gap"

Fig.6 Shape of supporting frame for "50 gap"

Fig.7 Shape of supporting frame for "41.7 gap"

Tab. 3 Dimensional parameters of brackets

类别	缝隙	厚度/mm	深度/mm
支撑1	50	10	10
支撑2	50	10	10
支撑3	50	10	10
支撑4	41.7	1.7	10
支撑5	41.7	1.7	10
支撑6	41.7	1.7	10
支撑7	41.7	1.7	10

Fig.8 Part of the simulation results with brackets

Fig.9 Temperature field simulation surface diagram

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