Example 1 The inner and outer surfaces temperatures of a 0.5-cm thick 2-m x 2-m window glass in winter are 10ºC and 3ºC,

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Example 1 The Inner And Outer Surfaces Temperatures Of A 0 5 Cm Thick 2 M X 2 M Window Glass In Winter Are 10oc And 3oc 1 (138.03 KiB) Viewed 29 times

Example 1 The inner and outer surfaces temperatures of a 0.5-cm thick 2-m x 2-m window glass in winter are 10ºC and 3ºC, respectively, if the thermal conductivity of the glass is 0.78 W/m.K, determine the amount of heat loss through the glass over a period of 5 hr. what would your answer be if the glass were 1 cm thick? Example 2 A cork slab 10 cm thick has one face at -12 °C and other face at 21 °C. If the mean thermal conductivity of the cork in this temperature range is 0.042 J/m S °C, what is the rate of heat transfer through 1 m² of wall. Example 3 1500 W of heat pass through the metal slab of 5 cm thick and 5 cm² area. One face of the slab is at 5 °C and the other face 30 ºC. Calculate the thermal conductivity of the metal slab. Example 4: Logarithmic area and temperature calculations 13