subject
Engineering, 20.12.2019 21:31 josecano2

There is a 2mm gap between computer chips and heat sinks in the system. the temperatures of the chips and heat sinks are maintained at 400k and 300k, respectively. there is air between the gap with a temperature of 300k and heat transfer coefficient of 20 w/m2k. in this case, which heat transfer mode is dominant? explain your answer.

air properties: p=1.225kg/m3, u=1.8x10-5 ns/m2, kair = 0.02 w/mk.
heat sink and heat source: ksolid = 100w/mk, varepsilon =0.5 (for all surfaces)

ansver
Answers: 3

Other questions on the subject: Engineering

image
Engineering, 03.07.2019 14:10, kayabwaller4589
When at a point two solid phase changes to one solid phase on cooling then it is known as a) eutectoid point b) eutectic point c) peritectic point d) peritectoid point
Answers: 3
image
Engineering, 03.07.2019 14:10, volleyballfun24
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
image
Engineering, 04.07.2019 18:10, wirchakethan23
Hydraulic fluid with a sg. of 0.78 is flowing through a 1.5 in. i. d. pipe at 58 gal/min. the fluid has an absolute viscosity of 11.8 x 105 lbf-sec/ft2. is the flow laminar, turbulent or within the critical range? give both a numerical reynolds number and a term answer.
Answers: 3
image
Engineering, 04.07.2019 18:20, krojas015
Asolid cylinder is concentric with a straight pipe. the cylinder is 0.5 m long and has an outside diameter of 8 cm. the pipe has an inside diameter of 8.5 cm. the annulus between the cylinder ad the pipe contains stationary oil. the oil has a specific gravity of 0.92 and a kinematic viscosity of 5.57 x 10-4 m2/s. most nearly, what is the force needed to move the cylinder along the pipe at a constant velocity of 1 m/s?
Answers: 3
You know the right answer?
There is a 2mm gap between computer chips and heat sinks in the system. the temperatures of the chip...

Questions in other subjects:

Konu
Mathematics, 25.09.2020 14:01
Konu
Mathematics, 25.09.2020 14:01