Engineering, 13.12.2019 05:31 Har13526574
Abrick of 203 x 102 x 57 mm in dimensions is being burned in a kiln to 1100°c, and then allowed to cool in a room with ambient air temperature of 30°c and convection heat transfer coefficient of 5 w/m2·k. if the brick has properties of rho=1920 kg/m3,crho= 790 j/kg·k, and k = 0.90 w/m·k, determine the time required to cool the brick to a temperature difference of 5°c from the ambient air temperature.
Answers: 2
Engineering, 03.07.2019 14:10
If the thermal strain developed in polyimide film during deposition is given as 0.0044. assume room temperature is kept at 17.3 c, and thermal coefficient of expansion for the film and the substrate are 54 x 10^-6c^-1 and 3.3 x 10^-6c^-1respectively. calculate the deposition temperature.
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Engineering, 04.07.2019 18:10
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Engineering, 04.07.2019 18:10
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Answers: 3
Engineering, 04.07.2019 18:20
What is the heat treatment of metals? what is the benefit of it? why and how it's useful? answer in details, do not write by hand.
Answers: 3
Abrick of 203 x 102 x 57 mm in dimensions is being burned in a kiln to 1100°c, and then allowed to c...
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