計算Brikka聚壓閥需要推開的壓力... - 咖啡討論
By Hedy
at 2008-06-06T21:25
at 2008-06-06T21:25
Table of Contents
一時無聊把Brikka的聚壓閥拿到磅秤上測量,得知27.9g
尺測量咖啡噴出的孔,約略0.1cm
用國中物理來簡單計算一下這樣需要累積多大的壓力才能推開
壓力 = F/A = 重量 / 受力面積
F = 27.9g
A = 0.1 * 0.1 * π (噴出孔的面積)
所以 F/A 等於 888 g/cm^2
一個大氣壓力是1033.6g/cm^2,
所以可以累積的壓力是 1 + (888/1033.6) = 1.86 atm
所以可以累積的壓力大約就是1.86個大氣壓力
--
尺測量咖啡噴出的孔,約略0.1cm
用國中物理來簡單計算一下這樣需要累積多大的壓力才能推開
壓力 = F/A = 重量 / 受力面積
F = 27.9g
A = 0.1 * 0.1 * π (噴出孔的面積)
所以 F/A 等於 888 g/cm^2
一個大氣壓力是1033.6g/cm^2,
所以可以累積的壓力是 1 + (888/1033.6) = 1.86 atm
所以可以累積的壓力大約就是1.86個大氣壓力
--
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