Maurice Tutor

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About Maurice Tutor

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Teaching Since: May 2017
Last Sign in: 398 Weeks Ago, 2 Days Ago
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Education

  • MCS,PHD
    Argosy University/ Phoniex University/
    Nov-2005 - Oct-2011

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  • Professor
    Phoniex University
    Oct-2001 - Nov-2016

Category > Management Posted 30 Dec 2017 My Price 8.00

bank of infrared lamps.

12.91   Square plates freshly sprayed with an epoxy  paint must be cured at 140°C for an extended period of time.

The plates are located in a large enclosure and   heated             A                B

by a bank of infrared lamps. The top surface of each

plate has an emissivity of s = 0.8 and    experiences

 

0.2

0

0      2      4      6       8      10

l (mm)

 

convection with a ventilation airstream  that  is at T00 = 27°C and provides a convection coefficient of h = 20 W/m2 · K. The irradiation from the enclosure walls is estimated to be Gwall = 450 W/m2, for which the plate absorptivity is awall = 0.7.

(a)    Calculate the absorptivity of the sample.

(b)   Calculate the emissivity of the sample.

(c)    Determine the heat removal rate (W) by the coolant.

(d)   The ratio of the radiation in the A direction to that in the B direction will give the reflectivity of the sample. Briefly explain why this is so.

 

Ventilation

airstream

 

T¥, h        

 

Enclosure

Lamp

Glamp

Painted plate

Answers

Maurice Tutor
(5)
Status NEW Posted 30 Dec 2017 09:12 PM My Price 8.00

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