Engineering, 11.07.2019 02:20 akemble8862

An array of computer processors is mounted within a sealed square enclosure; cooling is implemented by attaching an aluminum heat sink (k-180 w/m"k). the base of the sink has side length of 100 mm, while the 6 fins are of thickness 10 mm, have a pitch (distance between centers) of 18 mm, and length 40 mm. assume the thermal resistance in the base layer is very thin. if cooling is implemented by 20°c water flow through the heat sink at a velocity of 4 m/s, what is the base temperature? when computing average heat transfer coefficient over the fins, one may assume parallel flow over a flat plate. (water properties: k=0.62 w/m"? , p=995 kg/m3, cp=4178 j/kg"k, v=7.73 x 10^-7 m/s)

Answers: 3

Show answers

Other questions on the subject: Engineering

Engineering, 04.07.2019 18:10, ahmedeldyame

Aloaded platform of total mass 500 kg is supported by a dashpot and by a set of springs of effective stiffness 72 kn/m. it is observed that when the platform is depressed through a distance x = 12.5 cm below its equilibrium position and then released without any initial velocity; it reaches its equilibrium position in the shortest possible time without overshoot. find the position and velocity of the loaded platform 0.10 sec. after its release. if a further load of 400 kg is added to the platform, find, i) the frequency of damped vibrations, and i) the amplitude of vibration after 2 complete oscillations, given that the initial amplitude is 15 cm.

Answers: 1

continue

Engineering, 04.07.2019 18:10, tobyhollingsworth178

Which from the following instrument is commonly used to detect the high pitch butzing sound in bearings? [clo4] a)-digital ultrasonic meter b)-infrared camera c)-spectroscopic d)-vibrometer

Answers: 2

continue

Engineering, 04.07.2019 18:20, safiyabrowne7594

Ahe-xe mixture containing a 0.75 mole fraction of helium is used for cooling electronics in an avionics application. at a temperature of 300 k and atmospheric pressure, calculate the mass fraction of helium and the mass density, molar concentration and molecular weight of the mixture. if the cooling capacity is 10 l, what is the mass of the coolant?

Answers: 3

continue

Engineering, 04.07.2019 18:20, mjcbs21

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

continue

You know the right answer?

An array of computer processors is mounted within a sealed square enclosure; cooling is implemented...