The temperature difference between objects in an object or system is a necessary condition for generating heat conduction and the heat transfer rate (called heat conduction rate) caused by the heat conduction method is determined by the temperature distribution inside the object. The mechanism of heat conduction is more complicated. In 1822, French mathematician Fourier refined the heat conduction data and practical experience, and summarized the heat conduction law as Fourier’s law. For a uniform medium of a certain thickness, if there is a temperature difference between the two sides, the heat per unit area from the side with a high temperature to the side with a low temperature per unit time is proportional to the temperature difference between the two sides, and is inversely proportional to the thickness of the homogeneous. Specific heat capacity is the amount of heat absorbed or released by a unit mass object when it changes its unit temperature. After the problem analysis, we built a multi-layer protective clothing model and analyzed and solved each layer by differential equation method. For the first problem, heat conduction per unit area per unit time can be obtained, and the heat obtained per layer per unit time is the heat obtained from the previous layer minus the heat transferred to the next layer. Bringing the data of Annex I, using Mathematica to find the numerical solution of the differential equation in 5400 seconds, obtaining the function of temperature with respect to time, making an image, and the image generated by the calculated value is basically consistent with the image generated by the data provided in Annex II. After data review, heat transfer also includes the invisible effects of various parameters. Radiation heat transfer has the greatest influence on the parameters. There-fore, in the optimization of the model, we mainly optimize the radiant heat parameters based on the multi-layer high-temperature workwear model established by ourselves.
Modeling and Simulation