It refers to the amplitude of the h

It refers to the amplitude of the heat flow wave that is consumed to heat the wall material of infinite thickness when the amplitude of the surface temperature fluctuation is 1 ° C under a certain period of heat. When the heat wave period is constant, the heat storage coefficient of the material depends only on the thermal properties of the material itself, that is, the thermal conductivity, specific heat and density of the material. Therefore, all heavy, large specific heat, and good thermal conductivity materials have a large heat storage coefficient s value, strong heat storage ability to resist temperature fluctuations, and small fluctuations in internal temperature of the wall material; otherwise, it resists temperature The fluctuating heat storage capacity is weak, and the internal temperature of the wall material fluctuates greatly. In fact, the heat storage coefficient Y of the surface of the envelope and the heat storage coefficient S of the material have both common points and different points. Take the envelope structure composed of a single layer of homogeneous material as an example.