Engineering, 17.04.2020 19:56 xxaurorabluexx

A hot isothermal metal substrate at 300°C is coated with a 5 mm acrylic (density 1990 kg/m^3 , specific heat 1470 J/kgK, and conductivity 0.21 W/mK) sheet, initially at 20°C. As the sheet is getting heated by contact with the metal substrate determine how long will it take for the insulated back side of the sheet to reach its softening 90°C.

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A hot isothermal metal substrate at 300°C is coated with a 5 mm acrylic (density 1990 kg/m^3 , speci...