Engineering, 19.04.2021 16:10 zoeyandblaze
An array of electronic chips is mounted within a sealed rectangular enclosure, and cooling is implemented by attaching an aluminum heat sink (k 180 W/m K). The base of the heat sink has dimensions of w1 w2 100 mm, while the 6 fins are of thickness t 10 mm and pitch S 18 mm. The fin length is Lf 50 mm, and the base of the heat sink has a thickness of Lb 10 mm. If cooling is implemented by water flow through the heat sink, with u 3 m/s and T 17C, what is the base temperature Tb of the heat sink when power dissipation by the chips is Pelec 1800 W
Answers: 3
Engineering, 04.07.2019 18:10
Atmospheric air has a temperature (dry bulb) of 80° f and a wet bulb temperature of 60° f when the barometric pressure is 14.696 psia. determine the specific humidity, grains/lb dry air. a. 11.4 c. 55.8 d. 22.5 b. 44.1
Answers: 1
Engineering, 04.07.2019 18:20
Agas mixture consists of 8 kmol of h2 and 2 kmol of n2. determine the mass of each gas and the apparent gas constant of the mixture.
Answers: 3
Engineering, 04.07.2019 19:10
10 kg of co2 is initially contained at 400 kpa and 300 k. the gas constant for carbon dioxide is 189 j/lkg k) and has a specific heat ratio, k, of 1.289. isentropic expansion then occurs until the pressure is 200 kpa. a) determine the initial volume of co2 in m. b) determine the final temperature in k. c) determine the work done by the system during the expansion kl.
Answers: 2
Engineering, 04.07.2019 19:10
The maximum shear stress and maximum flexural stress occur at the same location along a beam subjected to a non-uniform bending load. a)-trune b)- false
Answers: 2
An array of electronic chips is mounted within a sealed rectangular enclosure, and cooling is implem...
Mathematics, 05.05.2020 08:19
History, 05.05.2020 08:19
Arts, 05.05.2020 08:19
History, 05.05.2020 08:19
English, 05.05.2020 08:19
Social Studies, 05.05.2020 08:19