5 T H E R M A L O U T P U T

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5 T H E R M A L O U T P U T

  1. 1. Lebanese university Faculty of Engineering HEATING TECHNIQUES Branch I Mechanical department THERMAL OUTPUT By Eng. Wael Zmerly - 2007 Lebanese university – Faculty of Engineering– Branch I ١ Heating Technique Eng. Wael Zmerly - 2007
  2. 2. BUILDINGS HEAT LOSSES Déperdition Text = 0°C 20m Tint = 20°C 0m Lebanese university – Faculty of Engineering– Branch I ٢ Heating Technique Eng. Wael Zmerly - 2007
  3. 3. EVOLUTION OF THE LOSSES OF HEAT IN BUILDINGS Text = 0°C 20m 20kW 20m /h 3 Tint = 20°C 0m Text = 0°C 10kW 10m 3 Tint = 10°C 10m /h 0m Text = 0°C 5kW Tint = 5°C 3 5m /h 5m 0m Lebanese university – Faculty of Engineering– Branch I ٣ Heating Technique Eng. Wael Zmerly - 2007
  4. 4. HOW TO STABILIZE THE INTERIOR TEMPERATURE OF A BUILDING 20m /h 3 Text = 0°C 20kW 20m Tint = 20°C 3 20m /h 20kW 0m 70°C Lebanese university – Faculty of Engineering– Branch I ٤ Heating Technique Eng. Wael Zmerly - 2007
  5. 5. EFFECT OF THE OUTSIDE TEMPERATURE Text = 0°C 3 20m /h 20kW 20m Tint = 20°C 3 20m /h 20kW 0m 70°C Text = 5°C 3 15m /h 15kW 20m Tint = 20°C 3 15m /h 15kW 5m 57.5°C 0m Text = 10°C 3 10m /h 10kW 20m 10m3/h Tint = 20°C 10m 10kW 45°C 0m Lebanese university – Faculty of Engineering– Branch I ٥ Heating Technique Eng. Wael Zmerly - 2007
  6. 6. CONSEQUENCE OF EXCESSES OF HEATING Text = 0°C 3 25m /h 20kW 20m Tint = 20°C 3 20m /h 25kW 0m 3 Text = 0°C 25m /h 25m 25kW 20m Tint = 25°C 3 25m /h 25kW 0m Lebanese university – Faculty of Engineering– Branch I ٦ Heating Technique Eng. Wael Zmerly - 2007
  7. 7. CONSEQUENCE OF A LACK OF HEATING Text = 0°C 3 15m /h 20kW 20m Tint = 20°C 3 20m /h 15kW 0m Text = 0°C 15m3/h 15kW 20m Tint = 15°C 15m 3 15m /h 15kW 0m Lebanese university – Faculty of Engineering– Branch I ٧ Heating Technique Eng. Wael Zmerly - 2007
  8. 8. HOW TO BRING HEAT IN THE BUILDING Text = 0°C Text = 0°C 15kW 20kW Tint = 15°C Tint = 20°C 75°C 15kW 20kW 70°C 65°C Text = 0°C Text = 0°C Text = 0°C 20kW 20kW 20kW Tint = 20°C Tint = 20°C Tint = 20°C 20kW 20kW 20kW 90°C 70°C 50°C Lebanese university – Faculty of Engineering– Branch I ٨ Heating Technique Eng. Wael Zmerly - 2007
  9. 9. EVOLUTION OF THE LOSSES OF HEAT OF THE BUILDINGS Lebanese university – Faculty of Engineering– Branch I ٩ Heating Technique Eng. Wael Zmerly - 2007

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