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: 407 Weeks Ago, 6 Days Ago
Questions Answered: 66690
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Education

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

Experience

  • Professor
    Phoniex University
    Oct-2001 - Nov-2016

Category > Management Posted 10 Dec 2017 My Price 7.00

Teflon tube

8.74    Water at 290 K and 0.2 kg/s flows through a Teflon tube (k = 0.35 W/m · K) of inner and outer radii equal to 10 and 13 mm, respectively. A thin electrical heating tape wrapped around the outer surface of the tube deliv-

ers a uniform surface heat flux of 2000 W/m2, while a convection coefficient of 25 W/m2 · K is maintained on the outer surface of the tape by ambient air at 300 K. What is the fraction of the power dissipated by the tape,

 

g, Tg

 

(a)    Neglecting conduction losses along the thermocou- ple tube, develop an analysis that could be used to predict the error (Tg - Tt) in the temperature mea- surement.

(b)   Assuming the flue gas to have the properties of atmospheric air, evaluate the error for Tt = 300°C,

Ds = 0.6 m, Dt = 10 mm, m· g = 1 kg/s, Too = Tsur =

27°C, st = ss = 0.8, and ho = 25 W/m2 · K.

 

8.76
 

In a biomedical supplies manufacturing process, a requirement exists for a large platen that is to be main- tained at 45 ± 0.25°C. The proposed design features the attachment of heating tubes to the platen at a relative spacing S. The thick-walled, copper tubes have an inner diameter of Di = 8 mm and are attached to the platen with a high thermal conductivity solder, which provides a contact width of 2Di . The heating fluid (ethylene glycol) flows through each tube at   a

fixed rate of m· = 0.06 kg/s. The platen has a thickness

 

 

 

of w = 25 mm and is fabricated from a stainless steel with a thermal conductivity of 15 W/m · K.

 

Answers

Maurice Tutor
(5)
Status NEW Posted 10 Dec 2017 10:12 PM My Price 7.00

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