Engineering, 29.01.2020 06:47 xojade
1. a glass window of width w = 1 m and height h = 2 m is 5 mm thick and has a thermal conductivity of kg = 1.4 w/m*k. if the inner and outer surface temperatures of the glass are 15°c and -20°c. respectively, on a cold winter day, what is the rate of heat loss through the glass?
2. to reduce heat loss through windows, it is customary to use a double pane construction in which adjoining panes are separated by an air space. if the spacing is 10 mm and the glass surfaces in contact with the air have temperatures of 10° c and - 15°c, what is the rate of heat loss from a 1 m times 2 m window? the thermal conductivity of air is ka = 0.024 w/m*k.
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
The mass flow rate of the fluid remains constant in all steady flow process. a)- true b)- false
Answers: 1
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
Water in a partially filled large tank is to be supplied to the roof top, which is 8 m above the water level in the tank, through a 2.2-cm-internal-diameter pipe by maintaining a constant air pressure of 300 kpa (gage) in the tank. if the head loss in the piping is 2 m of water, determine the discharge rate of the supply of water to the roof top in liters per second.
Answers: 3
1. a glass window of width w = 1 m and height h = 2 m is 5 mm thick and has a thermal conductivity o...
English, 01.08.2019 00:30
History, 01.08.2019 00:30
History, 01.08.2019 00:30
Social Studies, 01.08.2019 00:30
Mathematics, 01.08.2019 00:30
Chemistry, 01.08.2019 00:30
Mathematics, 01.08.2019 00:30
Mathematics, 01.08.2019 00:30