Engineering, 22.08.2019 16:30, MK100
A2 mx 1.5 m section of wall of a furnace is not insulated and the temperature at the outer surface of this section is measured to be 110 °c. the temperature of the furnace room is 32 °c. it is proposed to insulate this section with glass wool insulation (k = 0.038 w/m. k) in order to reduce the heat loss by 90 percent. determine the thickness of the insulation using the total thermal resistance, assuming the outer surface temperature of the metal section still remains at 110 °c, the effective convection heat transfer coefficient at the surface of the outer furnace is h = 10 w/m²k and disregarding any radiation.
Answers: 3
Engineering, 04.07.2019 08:10, doggo242
Which of the following is an easy way to remember the modified “x” tire rotation? a. nondrive wheels straight, cross the drive wheels b. drive wheels straight, cross the nondrive wheels c. drive wheels crossed, nondrive wheels straight d. drive wheels crossed, nondrive wheels crossed
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Engineering, 04.07.2019 18:10, niicoleassssssf
Aflywheel accelerates for 5 seconds at 2 rad/s2 from a speed of 20 rpm. determine the total number of revolutions of the flywheel during the period of its acceleration. a.5.65 b.8.43 c. 723 d.6.86
Answers: 2
Engineering, 04.07.2019 18:10, oshawn108
Ahot wire operates at a temperature of 200°c while the air temperature is 20°c. the hot wire element is a tungsten wire of 5 um diameter and 2 mm in length. plot using excel current, heat transfer and heat generated by the wire for air velocity varying from 1-10 m/s in steps of lm/s? matlab the sensor voltage output, resistance, or assume nu 0.989 re033pr13 take air properties at tr (200°c20°c)/2 = 110°c properties of tungsten: c 0.13 kj/kg. k 3 p 19250 kg/m k (thermal conductivity) = 174 w/m. k
Answers: 2
Engineering, 04.07.2019 18:20, 1230bering
Select any two (2) areas of applications of chain-drive. (clo4) a)-permanent lubrication necessary b)-hydraulic forklift truck operation c)-rigging and heavy moving materials d)-relatively high maintenance costs e)-costlier than belt drives
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A2 mx 1.5 m section of wall of a furnace is not insulated and the temperature at the outer surface o...
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