Solar oven question (20p)

2007-03-21 5:33 pm
emm..
my IS teacher wants our class to make a ppt that is about soalr oven.
Can you guys give me some ideas?
I want to get higher marks, thanks a lot!!!.
PS, AS FAST AS POSSIBLE!!!!!
更新1:

Plus, I have made a modle, but it is broken, so i have no pictures More and more???(ideas)

更新2:

We boil water

回答 (1)

2007-03-21 6:43 pm
✔ 最佳答案
solar oven 的原理主要都係要令到d heat 入到去個oven, 但係就出唔番來. 所以你地係個ppt 道就可以講呢一點, 如果係想要technical 一點的話, 就可以話個 "oven absorpt short wavelength infra-red and emit long wavelength infra-red". 咁當然, 如果你想再深入少少就要自己再search 吓啦, 係度講唔到咁多呀.

咁我諗理論你點都可以寫到一大堆, 但係如果想拿高分呢, 咁就一個要做多d 野啦, 比如係做一個實物model. 其實都唔係好難. 只要用發泡膠做一個四方形的盒, 盒入面要用鍚紙鋪好, 跟住就頂果一面開個window, 再用一張transparent 的玻璃或者係玻璃紙封住個window, 跟住係入面再放一個温度計. 咁樣就完成一個solar oven 啦

再想高分d就可以做多個實驗, 就係用個solar oven 煮egg同煮ice. 煮egg 可以比到d experimental data人地睇, 咁樣會感覺得professional 好多, 煮ice 就可以計埋個solar oven efficiency <== 呢個要睇吓你form 幾, 因為起碼都要form 4/5 先識計

最後就係要照多d 相, 包括你地做oven 的過程, 咁就掂晒啦

呢一個web 可以比到d examples 你
http://www.alibaba.com/productsearch/Green_House.html


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