Maurice Tutor

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About Maurice Tutor

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Expertise:
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Algebra,Applied Sciences,Biology,Calculus,Chemistry,Economics,English,Essay writing,Geography,Geology,Health & Medical,Physics,Science Hide all
Teaching Since: May 2017
Last Sign in: 431 Weeks Ago, 1 Day Ago
Questions Answered: 66690
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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 16 Feb 2018 My Price 7.00

neighborhood cat

12.125   The neighborhood cat likes to sleep on the roof of our shed in the backyard. The roofing surface is weath- ered galvanized sheet metal (s = 0.65, aS = 0.8). Consider a cool spring day when the ambient air tem- perature is 10°C and the convection coefficient can

be  estimated  from  an  empirical  correlation  of  the           Ts

 

 

 

 

Plate

 

 

 

 

 

 

 

 

 

 

 

 

 
 

1.0

Text Box: rl0.7

 

form

 

h = 1.011T1/3,  where  11T  is  the  difference

0.2

 

between   the   surface   and   ambient   temperatures.

Assume the sky temperature is -40°C.

(a)    Assuming the backside of the roof is well insu- lated, calculate the roof temperature when the

 

Insulation

 

Electrical heater

0

0               2

l (mm)

 

solar irradiation is 600 W/m2. Will the cat enjoy sleeping under these conditions?

(b)   Consider the case when the backside of the  roof is not insulated, but is exposed to ambient air with the same convection coefficient  relation and experiences radiation exchange with the ground, also at the ambient air temperature. Cal- culate the roof temperature and comment on whether the roof will be a comfortable place for the cat to snooze.

Answers

Maurice Tutor
(5)
Status NEW Posted 16 Feb 2018 04:02 PM My Price 7.00

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