Altitude test chamber is suitable for high temperature, low temperature, height, and high and low temperature cycle test on products (whole machine), parts and materials. And temperature-height comprehensive test, this chamber can be used for heat dissipation test samples and non-heat dissipation test samples during high and low temperature tests. high altitude For the test of the heat dissipation test sample in the low pressure test chamber, the heat dissipation power cannot exceed the cooling capacity of the test chamber. As a dynamic value ,refrigerating capacity change with temperature change