DESIGN AND CONSTRUCTION OF AN INDUCTION FURNACE COOLING SYSTEM

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DESIGN AND CONSTRUCTION OF AN INDUCTION
FURNACE(COOLING SYSTEM)
Presented by MG THANT ZIN WIN Roll No Ph.D-M-7
Supervisors Dr Mi Sanda Mon
Daw Khin War Oo
23rd Seminar
5.1.2005
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Weather of Yangon for March, 2004
Ref www.wunderground.com
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Unknown Data Collection and Calculation of 15th,
March, 2004

• Dry-bulb air temperature, F 88
• Relative humidity, 62
• Wind velocity, mph 4
• Water inlet temp (T1) F 129.2
• Water outlet temp (T2) F 82.4
• Latitude of Yangon, 16.45 N
• Solar heat gain, Btu/(h.ft2) 17

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Solar Heat Gain
For 15th, March, n 74
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Day length,
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Shading

• Shading from existing trees, nearby structures,
  and topography
• Light colored roof surfaces
• Insulation
• Radiant barriers
• Roof vents

Fig - Preventing heat gain by shading the roof.
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Sample Roof Assembly
Fig. 8-2 Using roof materials to reflect the
Suns heat.
A light colored roof can reflect 25-30 of the
suns radiant heat and can be as much as 12
cooler than a dark colored roof. (Source
Department of Education, State of Hawaii, 1979.)
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Comparison of Different Roofing Materials
Table - Comparison of Different Roofing
Materials, Showing White (Cooler Options)
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• Assume Roof material is metal sheet.
• So, 70 of solar heat gain 25.5 Btu/(h.ft2)
• Consider the other factors such as tree, bushes,
  hill, etc and it has 10 reflectance.
• Finally, Solar heat gain 17 Btu/(h.ft2)

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Determining P and Q Values by Using the Nomograph
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It is more than to use a fairly constant
discharge temperature throughout the day.
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THANK YOU