Bilingual edition: English is preserved and Chinese follows each unit. Terminology uses the confirmed v20260916 glossary; automated semantic review remains traceable.
中英双语版:英文原文完整保留,中文紧随对应单元;术语采用 v20260916 确认表,自动语义审校结果可追溯。

Insulation R-Value

绝缘R值
Material
材料
R value(ft^2 °F h/Btu
R值(ft²·°F·h/Btu)
Hardwood siding (1 in. thick)
硬木板(1英寸厚)
0.91
Wood shingles (lapped)
木瓦片(重叠式)
0.87
Brick (4 in. thick)
砖块(4英寸厚)
4.00
Concrete block (filled cores)
混凝土块(实心核)
1.93
Fiberglass batting(3.5 in. thick)
玻璃纤维填充物(厚3.5英寸)
10.90
Fiberglass batting(6 in. thick)
玻璃纤维填充物(厚6英寸)
18.80
Fiberglass board (1 in. thick)
玻璃纤维板(1英寸厚)
4.35
Cellulose fiber(1 in. thick)
纤维素纤维(1英寸厚)
3.70
Flat glass (0.125 in thick)
平板玻璃(0.125英寸厚)
0.89
Insulating glass(0.25 in space)
绝缘玻璃(0.25 英寸空间)
1.54
Air space (3.5 in. thick)
空气空间(厚3.5英寸)
1.01
Free stagnant air layer
自由静止空气层
0.17
Drywall (0.5 in. thick)
石膏板(厚0.5英寸)
0.45
Sheathing (0.5 in. thick)
保温层(0.5英寸厚)
1.32
Data from Serway/Beichner.
Modeling of heat loss from a house.
对房屋散热的建模
来自Serway/Beichner的数据
Index

Tables
索引表
  HyperPhysics***** Thermodynamics
HyperPhysics ***** 热力学
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