→ tookouw:就跟先民會把食物用陶罐裝 埋在地下一樣 08/16 22:49
→ wwwptt:ㄎㄎ 剛又想到一個點子可以有冷房效果 太陽越大越有效 08/16 23:50
我在voa看到的描述
http://www.voanews.com/english/2007-08-09-voa60.cfm
The pot-in-pot cooler keeps vegetables fresh for days -- making it possible
to earn money from produce that would otherwise spoil before it could be
brought to market. "It's designed by Mohammed Bah Abba, an engineer out of
Nigeria,” Smith says. “It's one ceramic pot inside another ceramic pot.
Between the two pots, there's sand. You pour water into the sand, and as the
air evaporates, the hot air escapes from the center of the pot, and leaves
cool air."
基本上這是設計給窮人的冰箱。
文章是說，把一個陶罐放在另一個陶罐裡，兩者的縫隙放進沙子，然後把水灌進沙子。
這樣的話熱空氣會蒸發留下冷空氣在裡面，就達成保冷的效果。
看起來很有趣，不過我很難想像這是怎麼運作的，有人想要試著實作看看嗎?
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※ 編輯: wwwptt 來自: 59.116.40.238 (08/16 21:29)