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Research & Application on the Heat Preservation and Insulation Material of Energy Efficiency

Author: HaoXianCheng
Tutor: MaBaoGuo
School: Wuhan University of Technology
Course: Materials Science
Keywords: heat preservation & insulation anti-crack PCM external heat preservation
CLC: TU551
Type: Master's thesis
Year: 2006
Downloads: 1127
Quote: 13
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Abstract

In our country building envelope has the poor heat preservation and insulation and the energy has the low used efficiency. The building energy consumption approximately composes 27.6% of the social total energy consumption and has the trend of escalation by year.The regenerative material is synthetically used to develop the heat preservation and insulation material system. It has some features, including heat preservation and insulation, good anti-crack, environmental protection and energy efficiency, easy operated. Its technical focus is: System research on the heat preservation and insulation of outer wall;Research on the theory of heat preservation and insulation and the theory of anti-crack of the material of outer wall;Effect analysis on phase change material (PCM) in building envelope.System research on the heat preservation and insulation of outer wall: including the emulsion powder and the benzene pellet heat preservation and insulation mortar is developed by synthetically used the regenerative material, construction technology of system of external thermal insulation about EPS plate’s grout. Contents: l)Structural design and fundamental research on heat preservation and insulation, Determine the thickness of the heat preservation and insulation material etc. 2)To design the gradation of polystyrene froth pellet and the proportion with the gelation, that causes the performance optimization of the heat preservation and insulation material;To fill up the silicon aluminum glass hollow spheroid material which belongs to the light, porous materials, plays to the heat preservation and insulation role;The research indicated that: regarding the different basic unit wall, selects does not surpass the 40mm this heat preservation heat insulation mortar, then achieves in the standard about the wall heat transfer coefficient and the regeneration coefficient request.3) The focal illustration is fundamental constructions, including adhesion and piece together of EPS plate, lap joint and turn-up of alkaline-resisting grid fabric, plastic bolt, divided seam and the expansion joint, the masculine and feminine elements angle and window, the balcony and the drop water line, other exterior facilities and so on.Research on the theory of heat preservation and insulation and the theory of anti-crack of the material of outer wall: The heat preservation and insulation material is designed by the idea of "release stress" to resolve the wall material dehiscence. Contents: 1) The polymer emulsion powder is added into the mortar, the ratio of compressive and flexural strength, freeze-thaw resistance and shrinkage performance of the mortar are indicated that the proportion of emulsion powder should be controlled in 1.5% for to enhance the overall flexibility and crack resistance of the mortar. 2) Alkali resistance fiberglass mesh and the fiber may disperse the stress;3) The SEM atlas confirms this conclusion: The emulsion powder can enhance theflexibility.Effect analysis on phase change material (PCM) in building envelope: PCM has the characteristic to reduce expenses and cut down the interior temperature when the PCM is used in building envelope. With the 22 carbon paraffin wax took changes the material to calculate the example result indicated: With does not add under the same condition changes the material to compare, when the outdoor temperature elevates 10 °C, joins changes the material to be possible to reduce in the room the peak value temperature approximately 4 °C, may cause peak value thermal delay 2.65h.This research has applied. Indicates: 1) may effectively reduce the energy consumption, ease the environmental pollution;2) may effectively improve the air quality in the room;3) the product takes the solid wastes as the main raw material, so it is the product of the energy conservation utilization of waste;4) 5 years may recycle all heat preservation and insulation material costs, It is lower than the construction by far the service life.

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