5 T H E R M A L O U T P U T
9
Heating Technique ١ Lebanese university – Faculty of Engineering– Branch I Eng. Wael Zmerly - 2007 THERMAL OUTPUT Lebanese university Faculty of Engineering Branch I Mechanical department By Eng. Wael Zmerly - 2007 HEATING TECHNIQUES
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Transcript of 5 T H E R M A L O U T P U T
Heating Technique١Lebanese university – Faculty of Engineering– Branch I
Eng. Wael Zmerly - 2007
THERMAL OUTPUT
Lebanese universityFaculty of Engineering
Branch IMechanical department
By Eng. Wael Zmerly - 2007
HEATING TECHNIQUES
Heating Technique٢Lebanese university – Faculty of Engineering– Branch I
Eng. Wael Zmerly - 2007
BUILDINGS HEAT LOSSES
T = 0°Cext
T = 20°Cint
Déperdition
20m
0m
Heating Technique٣Lebanese university – Faculty of Engineering– Branch I
Eng. Wael Zmerly - 2007
EVOLUTION OF THE LOSSES OF HEAT IN BUILDINGS
20m
0m
20m /h3
T = 0°Cext
T = 20°Cint
20kW
10m
0m
10m /h3
T = 0°Cext
T = 10°Cint
10kW
5m0m
5m /h3
T = 0°Cext
T = 5°Cint
5kW
Heating Technique٤Lebanese university – Faculty of Engineering– Branch I
Eng. Wael Zmerly - 2007
T = 0°Cext
T = 20°Cint
20kW
20kW70°C
20m
0m
20m /h3
20m /h3
HOW TO STABILIZE THE INTERIOR TEMPERATURE OF A BUILDING
Heating Technique٥Lebanese university – Faculty of Engineering– Branch I
Eng. Wael Zmerly - 2007
T = 0°Cext
T = 20°Cint
20kW
20kW70°C
20m
0m
20m /h3
20m /h3
T = 5°Cext
T = 20°Cint
15kW
15kW57.5°C
20m
0m
15m /h3
15m /h3
5m
T = 10°Cext
T = 20°Cint
10kW
10kW45°C
20m
0m
10m /h3
10m /h3
10m
EFFECT OF THE OUTSIDE TEMPERATURE
Heating Technique٦Lebanese university – Faculty of Engineering– Branch I
Eng. Wael Zmerly - 2007
CONSEQUENCE OF EXCESSES OF HEATING
20m
0m
25m /h3
20m /h3
T = 0°Cext
T = 20°Cint
20kW
25kW
20m
0m
25m /h3
25m /h3
25m
T = 0°Cext
T = 25°Cint
25kW
25kW
Heating Technique٧Lebanese university – Faculty of Engineering– Branch I
Eng. Wael Zmerly - 2007
CONSEQUENCE OF A LACK OF HEATING
T = 0°Cext
T = 15°Cint
15kW
15kW
20m
0m
15m /h3
20m /h3
T = 0°Cext
T = 20°Cint
20kW
15kW
20m
0m
15m /h3
15m /h3
15m
Heating Technique٨Lebanese university – Faculty of Engineering– Branch I
Eng. Wael Zmerly - 2007
HOW TO BRING HEAT IN THE BUILDING
T = 0°Cext
T = 20°Cint
20kW
20kW70°C
T = 0°Cext
T = 20°Cint
20kW
20kW50°C
T = 0°Cext
T = 20°Cint
20kW
20kW70°C
75°C
65°C
T = 0°Cext
T = 15°Cint
15kW
15kW
T = 0°Cext
T = 20°Cint
20kW
20kW90°C
Heating Technique٩Lebanese university – Faculty of Engineering– Branch I
Eng. Wael Zmerly - 2007
EVOLUTION OF THE LOSSES OF HEAT OF THE BUILDINGS
