請教爐子和煙囪直徑比例多少，能讓煙囪效應最佳

chancehuang

有關煙囪設計：
http://woodheat.org/index.php
可惜是英文的。
Summary of design guidelines

1. Put the chimney inside the warm building environment: 煙囪應在溫暖室內
2. Go straight up, no elbows or offsets: 直通，沒轉折、位移
3. Insulation around the flue liner：爐的煙道需 隔熱
4. Flue sized to match stove：煙道 要配合 爐 尺寸

chancehuang

The chimney should be installed within the house rather than up an outside wall. When chimneys run up outside walls, they are exposed to the outside cold and this chilling effect can reduce the available draft at the appliance.
煙囪應在 室內 可避免 外界低溫 冷卻，減低 煙囪 效應
A rule of thumb for minimum height states that the total system height (from the floor the appliance is mounted on to the top of the chimney) should never be less than 4.6 m (15 ft.).
越高越好，至少 高 4.6米，從 爐到煙囪頂
The top of the chimney should extend not less than 1 m (3 ft.) above the point it exits the roof, and 600 mm (2 ft.) higher than any roof, building or other obstacle within a horizontal distance of 3 m (10 ft.).
煙囪頂得比屋頂至少高出一米
The chimney flue should be the same size as the appliance flue collar.
煙囪 管徑符合 爐的 煙道
Is Your House a Better Chimney Than Your Chimney?
由 煙囪 排煙，非房子本身