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High and low temperature impact test chamber: what is convection and heat conduction

Hits:Updated:2019-12-25 15:12:30【Print】

In the 21st century today, high and low temperature impact test boxes are used to improve the utilization of raw materials, reduce energy consumption, improve product quality, and improve labor productivity and economic benefits. In order to achieve the transformation of traditional industries, the performance and application of components are improved.
High and low temperature impact test boxes are used for products that are often subjected to extremely rapid temperature changes in the intended use area or mode of use. For example: electronic equipment silos, missiles, optoelectronic equipment, and bombs in bomb silos on airplanes that take off from desert airports to high altitudes; products that are airdropped from high altitudes to desert areas; products that are transferred from indoor to outdoor in the Arctic. The purpose of an impact test chamber is to examine the impact of sudden changes in ambient temperature on product performance. During the test in the high and low temperature impact test box, the temperature of the refrigerant in the tube in the evaporator is lower than the temperature of the air outside the tube, and the heat in the air will be transferred to the refrigerant. This heat transfer is continuous. For the convenience of explanation, We divide it into two parts: convection and heat conduction. Convection is the transfer of heat from the air to the evaporator tube wall. Heat conduction is the heat transferred from the air to the tube wall through the tube to the refrigerant, which is mostly achieved by heat conduction.
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