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DESIGN AND CONSTRUCTION OF AN INDUCTION FURNACE (COOLING SYSTEM)

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. 23 rd Seminar 5.1.2005.

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DESIGN AND CONSTRUCTION OF AN INDUCTION FURNACE (COOLING SYSTEM)

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  1. 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

  2. Weather of Yangon for March, 2004 Ref : www.wunderground.com

  3. 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

  4. Solar Heat Gain For 15th, March, n = 74

  5. Day length,

  6. 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.

  7. Sample Roof Assembly Fig. 8-2: Using roof materials to reflect the Sun’s heat. A light colored roof can reflect 25-30% of the sun’s radiant heat and can be as much as 12˚ cooler than a dark colored roof. (Source: Department of Education, State of Hawaii, 1979.)

  8. Comparison of Different Roofing Materials Table - Comparison of Different Roofing Materials, Showing White (Cooler Options)

  9. [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)

  10. Determining P and Q Values by Using the Nomograph

  11. It is more than to use a fairly constant discharge temperature throughout the day.

  12. THANK YOU

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