The invention belongs to the technical field of
textile performance testing, and discloses a cooling type heat retention
property testing device and method based on a dynamic
heat balance principle. Comprising a box body
assembly, a
heating system arranged above the box body
assembly, a temperature measuring
system penetrating through the side wall of the box body
assembly and extending into the box body assembly, a reflective heat
insulation system laid in the box body assembly and a sample fixing
system. The temperature measuring
system comprises a temperature measuring probe and a
thermocouple tester, one end of the temperature measuring probe penetrates through the side wall of the box body assembly, the other end of the temperature measuring probe is connected with the
thermocouple tester, an opening is formed in the center of the top of the box body assembly, and the sample fixing system is arranged at the opening of the top of the box body assembly. The warmth retention
property testing device designed by the invention is adaptive to a thick velvet bag test, breaks through the thickness limitation of traditional instruments such as YG606 and the like, can accommodate a velvet bag sample with the thickness of 2-15cm through the top opening design and enough box
body space, and solves the technical problem that a thick velvet bag cannot be tested.