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ASTM C680用计算机程序估测绝热的平面系统,圆柱形和球形系统的表面温度及吸热或热损失的标准规范
日期:2012-02-13 21:45
s. The change in thermal conductivity with temperature is different for different materials, and for operation at a relatively small temperature difference, an average thermal conductivity may suffice. Thermal insulating materials (k 0.85 {Btuin}/{hft2F}) are porous solids where the heat transfer modes include conduction in series and parallel flow through the matrix of solid and gaseous portions, radiant heat exchange between the surfaces of the pores or interstices, as well as transmission th

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