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一、热惯量对经典的热传导方程给予一个简单的温度周期函数为边值条件,求解方程,可以得到一个简单的公式: Q=-2/ω~(1/2)T_0P (1)式中Q为热能,T_0为温度变化的振幅,ω为周日角频率,P是物体固有的常量,其表达式为: P=Kρc~(1/2) (2)其中K为热导率(焦耳/米·秒·开尔温),ρ为密度(千克/米~3),c为比热容(焦耳/(千克·开尔温)。从式(1)可见,当物体吸收或损失的热能相同时,物体温度变化的振幅T_0与物体固有的
First, the thermal inertia of the classical heat conduction equation to give a simple temperature cycle function for the boundary conditions, solving the equation, you can get a simple formula: Q = -2 / ω ~ (1/2) T_0P (1) where Q Is thermal energy, T_0 is the amplitude of temperature change, ω is the angular frequency of the sun, P is an intrinsic constant of the object, and its expression is: P = Kρc ~ (1/2) (2) where K is the thermal conductivity (Joules / Ρ is the density (kg / m ~ 3), c is the specific heat capacity (Joules / (kg · Kelvin)) From equation (1) it can be seen that when the thermal energy absorbed or lost by the object is the same , The amplitude of the object temperature change T_0 is inherent to the object