lec6 - Principles for insulation Restrict heat transfer...

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Unformatted text preview: Principles for insulation Restrict heat transfer through conduction convection radiation Image by MIT OCW. Int Ext Principles for insulation Three insulation mechanisms reflective Absorptance Reflectance Image by MIT OCW. Principles for insulation Three insulation mechanisms reflective resistive Insulating material Pine Water Snow Brick Cement block Plaster Mortar Molasse Glass Steel Aluminum Concrete Cellular concrete 1 10 100 1 000 10 000 Relative conductivity % air Insulating material Pine Water Snow Brick Cement block Plaster Mortar Molasse Glass Steel Aluminum Concrete Cellular concrete 1 10 100 1 000 10 000 Relative conductivity % air U (W/m 2 k) Insulation thickness (cm) 2 4 6 8 10 12 14 16 18 20 22 24 2.5 2 1.5 1 0.5 Image by MIT OCW. Principles for insulation Other characteristics and applicability Applications Material Homogeneous surface Conventional flat roofs Inverted roof Ventilted insulation Insulation between walls Injected insulation Floors Light panels...
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This note was uploaded on 12/11/2009 for the course ARCHITECTU 4.401 taught by Professor Marilyneandersen during the Spring '06 term at MIT.

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lec6 - Principles for insulation Restrict heat transfer...

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