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研究生:廖志中
研究生(外文):Liao, Chih-Chung
論文名稱:木質內裝材料及木質複合壁體隔熱效應之研究
論文名稱(外文):Studies on the Thermal Insulation Efficiency of Wooden Interior Decorative Materials and Woodebased Composite Walls
指導教授:王松永王松永引用關係---
指導教授(外文):Wang Song-Yung
學位類別:博士
校院名稱:國立臺灣大學
系所名稱:森林學系
學門:農業科學學門
學類:林業學類
論文種類:學術論文
論文出版年:1998
畢業學年度:86
語文別:中文
論文頁數:234
中文關鍵詞:熱傳導率熱流密度熱抵抗熱貫流抵抗熱流量木質複合壁體
外文關鍵詞:thermal conductivityrate of hest flowthermal resistanceoverall thermalheat fluxwoodbased composite walls
相關次數:
  • 被引用被引用:9
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本研究係探討不同樹種﹑木質材料﹑隔熱材料及無機質材料使用於建築內
裝時之隔熱性能﹐另外亦以木材為主体﹐與其他材料所組成之壁體﹐探討
不同壁體組合方式之隔熱效果﹐及其對居住環境溫濕度調節效應﹐省能源
部M研究結果歸納如下:

(1)壁體材料的熱傳遞量(Q)及熱傳導率(λ)值﹐會隨高低溫側溫度差之增
加而增大﹐有明顯的正相關﹐而其熱抵抗(R)及熱貫流抵抗(1/K)則會隨高
低溫側溫度差之增加而減少﹐有明顯的負相關。
(2)壁體材料的熱抵抗(R)及熱貫流抵抗(1/K)會隨其厚度增加而增大﹐並
可以二次式迴歸方程式表示之。
(3)兩種發泡型隔熱材料聚苯乙烯發泡体(PS foam)及聚胺甲酸酯發泡体(
PU foam)﹐於30oC溫差下﹐在隔熱的立場上3.3cm厚已接近其最大有效厚
度。
(4)中空夾心嵌板的熱傳導率(λ)值會隨中空層厚度增加而呈直線狀增大。
(5)多層中空夾心玻璃嵌板之R值及1/K值﹐均會隨空氣層數增加而急速增大。
(6)隔熱材料夾心嵌板在靠近高溫側再施以配置1.0~2.0cm的中空層﹐會有
效的提高該組合嵌板的隔熱能力﹐兼收節省材料的雙重效果。
(7)試驗屋各朝向壁体中以屋頂壁體接受之總日射量最大﹐約為東﹑西向壁體的兩倍。
(8)利用日射量與外氣溫度推算出的室外綜合溫度與實 測之外壁體表面溫度相近。
(9)利用木材內裝的組合壁體可有效調節室內溫度及濕度並可降低室內溫
濕度的日較差及溫濕度變動比。



(10)無內裝試驗屋在使用空調時﹐會加大該室內溫濕度變動幅度﹐但木材
內裝試驗屋室內由於木材隔熱保溫及吸脫濕性能之發揮﹐則會降低溫濕度
變動的幅度。
(11)試驗屋各朝向壁体中均以屋頂壁體累積流入室內的熱量最多。木材內
裝屋由於室內木質壁板產生的隔熱效能﹐其屋頂全日累積流入室內之熱量
約僅為無內裝屋屋頂的63~70%。
(12)試驗屋內外壁的溫差約在12:00時達最高值﹐而往室內流入的逐時熱
流量﹐最大值則在15:00時左右﹐此乃混凝土壁體熱容量大﹐產生的滯後
現象。
(13)由於東側窗戶使用透明玻璃﹐使得太陽輻射能很容易透過玻璃將熱量
傳入室內﹐累積全日單位面積的熱流量甚至比屋頂還高﹐但利用70%遮蔽
率的外掛式木製百葉窗﹐可降低經由窗戶流入室內的熱量高達90%。。
(14)在炎熱的夏季使用空調設備﹐會提高室內與室外的溫差﹐相對的亦會
增加向室內熱流之速率及熱量。
(15)單純以0.9cm厚柳杉實木板內裝﹐約可節省11%之用電量﹐但如又在屋
頂及東牆壁體﹐均配置二層1.1cm厚的PS板﹐組合成複合隔熱壁體﹐則省
電率更可達24%以上。
Abstract

Wood is one kind of material with low thermal conductivity,
poor heat transferring ability, and good thermal insulation.
The purpose of this study was to investigate the thermal
insulation performance of solid wood, wood based material,
thermal insulation material, and inorganic material used as
interior decorative material. The study was also investigated
thermal i
ion methods by using wood based material compounded with other
materials as wall panels. These results will provide as basic
information for house design and "Green Architectures Policy".
This study composed of four major experiments. First of all,
the thermal resistance, thermal conductivity, and overall
thermal resistance of different wall panels which were under dif
method in accordance with the specification of ASTM 236-89.
then step was to study the difference between wood interior
decorated house and non-decorated house, this difference
included interior temperature and humidity, wall temperature
and solar irradiation of all walls. Finally, the heat flow
condition and energy saving efficiency of different composite
wall panels

1. The heat flux and thermal conductivity of wall panel
material increased significantly with increasing temperature
difference on both sides of the panel, however, the thermal
resistance and overall thermal resistance of the material
decreased significantly with increasing temperature difference
on both sides of the panel.
2. The thermal resistance and overall thermal resistance of
wall panel material also increased with increasing thickness,
however, the thermal insulation performance of the material
decreased with increasing thickness.
3. The maximum effective thickness was about 3.3 cm for two
kinds of thermal insulation materials, PS foam and soft PS
foam, under 30℃ difference in temperature.
4. The thermal conductivity of air layer panel was effected by
air convection and decreased with increasing thickness of air
layer.
5. The thermal resistance and overall thermal resistance of
multi-layer air core panel increased rapidly with the number of
layer.


6. The thermal insulation ability and material saving of
composite panel could be improved by applying thermal
insulation material to form 1.0 - 2.0 cm air layer closed to
high temperature side.
7. The total solar irradiation of top floor was the maximum one
among the walls and it was twice as the quantity of eastern and
western walls.
8. The exterior temperature derived by solar irradiation and
exterior air temperature was close to the real recorded surface
temperature of the wall.
9. The interior temperature, humidity, both the temperature and
humidity day difference, and the fluctuation ratios of
temperature and humidity were reduced by applied the wood
interior decoration material.
10. When air conditioner was used, the interior temperature and
humidity fluctuations of the house without wood interior
decoration material was larger than the house with wood
material owing to the fluctuations were stabilized by the
insulation and moisture absorption-desorption properties of
wood.
11. The maximum heat flux flowing into the house was from the
top floor. The total heat flux of House A was about 63-70% of
House B in summer, for example.
12. The maximum temperature difference on both side of the wall
occurred at noon. However, the maximum heat flux flowing into
the house occurred at 15:00 PM. This delayed situation owing
to the large heat capacity of RC wall.
13. Owing to the transparent glass window installed at eastern
wall, the solar radiation was easy to be transferred into the
house through glass. The total heat flux per unit area in a
day could be higher than the top floor. However, the heat flux
through the window could be reduced 90 % off by using 70%
shading rate of the exterior wooded shelves-curtain.
14. The use of air conditioner in hot summer would increase the
temperature difference between indoors and outdoors and
increase the thermal energy and heat flux flowing into the
house.
15. The electricity consumption could be saved up to 11% while
using 0.9cm solid wood of Japanese cedar as interior decorative
material, furthermore, the electricity consumption cloud be
saved up to 24% by applying two 1.1 cm PS panels to top floor
and eastern wall as composite insulation wall.
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