摘要
近年来,频繁的高温天气已经严重影响作业人员的身心健康,因此有必要研制降温服以改善工人工作条件。通过对半导体降温服的部分制冷性能进行实验研究,结果表明:当最大制冷量为68.9 W的单个制冷片工作时,以P_0为中心,半径相同处,温度也基本相同,且随着距离的增加,各测点温差降低率先加快后减慢;当三个制冷片工作时,温度变化呈现一定的差异性,且随着距离的增加,P_5~P_8和P_9~P_(12)测点的温差先降低后上升,在距离制冷中心3 cm处有明显的转折点;半导体降温服交盖效应的范围为以制冷中心为圆心、半径4 cm左右的圆域,且在相邻两个制冷片距离相同的情况下,当制冷中心位于同一水平线时,交盖效应更明显。研究为半导体降温服的应用提供了一定的指导意义。
In recent years, high temperature is increasingly frequent, which has a serious effect on the health of workers. Thus, it is nec- essary to develop a cooling garment to improve work conditions. The cooling performance of thermoelectric cooling garment is experimentally investigated in the paper. The studies show that： under working conditions of only one element of thermoelectric cooler（ the maximum cooling capacity is 68.9 W）, the temperature is basically equal at the same radius as the center of P0, and as the distance increases, the temperature difference of each measuring point reduces rapidly first and then slows down; under working conditions of three elements of thermoelectric cooler, the temperature exhibits some differences, and as the distance increases, the measuring point temperature difference of Ps-P8 and Pg-P12 first decrease and then rise, which has a significant turning point at the distance of 3cm; the overlap effect scope of thermoelectric cooling garment is a circle, the radius of 4 cm at the center of P0, and at the same distance of two adjacent elements of thermoelectric cooler, the overlap effect is more obvious when the cooling center is located in the same horizontal line. This study provides some guidance for the application of thermoelectric cooling garment.
出处
《制冷学报》
CAS
CSCD
北大核心
2017年第2期40-44,共5页
Journal of Refrigeration
基金
教育部创新团队(IRT0856)
中国博士后科学基金(2016M590962)项目资助
陕西省重点科技创新团队计划(2012KCT-09)
陕西省13115科技创新工程(2010ZDGC-14)项目资助~~
关键词
半导体制冷
降温服
交盖效应
thermoelectric cooling
cooling garment
overlap effect
