Engineering, 07.11.2019 23:31 ijohnson020702
Ahouse is maintained at 1 atm and 24°c, and warm air inside a house is forced to leave the house at a rate of 90 m3/h as a result of outdoor air at 5°c infiltrating into the house through the cracks. determine the rate of net energy loss of the house due to mass transfer. the gas constant of air is r = 0.287 kpa·m3/kg·k. the constant pressure specific heat of air at room temperature is cp = 1.005 kj/kg·°c.
Answers: 3
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.
Answers: 3
Engineering, 04.07.2019 18:10
Afluid flows with a velocity field given by v=(x/t)i.. determine the local and convective accelerations when x=3 and t=1.
Answers: 2
Engineering, 04.07.2019 18:10
Thermal stresses are developed in a metal when its a) initial temperature is changed b) final temperature is changed c) density is changed d) thermal deformation is prevented e) expansion is prevented f) contraction is prevented
Answers: 2
Engineering, 04.07.2019 18:10
Assuming compressible flow of air and that the measurements are done at flagstaff a pitot static tube that gives the difference of total and static pressure measures 0.35 m of mercury. what is the velocity of air? assume the temperature to be 300k. (submit your excel or matlab calculation sheet)
Answers: 1
Ahouse is maintained at 1 atm and 24°c, and warm air inside a house is forced to leave the house at...
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