[21空调] 737再循环系统的空气能提供给驾驶舱吗？

ryn_82 发表于 2020-01-26 17:46
楼上说的是对的，左组件开的话

HelloSky 发表于 2020-01-26 17:50
如果只使用右组件的话，还是有一部分来自再循环空气的，对吧？

Stevenzhang6 发表于 2020-01-27 05:18
Nope. Eventhough you’re using the RH pack for air conditioning only, as long as the Isolation valves stay in auto position, LH side will use RH side pneumatic power and the flight deck air still comes from LH ram air and pneumatics.

Stevenzhang6 发表于 2020-1-27 05:18
Nope. Eventhough you’re using the RH pack for air conditioning only, as long as the Isolation val ...

ryn_82 发表于 2020-1-26 19:20
当前，或者不开空调也是。

HelloSky 发表于 2020-01-27 07:07
I see, but when the isolation valve which is for bleed crossfeed usage is in auto position, left pack is not neccessarily working if you turn it off.

So the conclusion comes to: as long as you turn off left pack, and keeps recirculation fans working, cockpit get both fresh air from right pack or ground source and used air from cabin through recirculation fans. Same as what Ruan said.

Stevenzhang6 发表于 2020-1-27 20:26
Pal, the ground source air won’t go through mixer coming to flight deck. It delivers the air dire ...

修飞机的胖子 发表于 2020-01-28 01:54
当然是不能啊，再循环风扇

智商突然上线 发表于 2020-01-29 01:34
我以后要多看看这样的帖子

HelloSky 发表于 2020-01-27 21:48
As for B737NG, this image, which is from FCOM, may exactly explain whether the ground source WILL or not go through mixer.

Ground source will be considered as fresh air source, same as both PACKs. They are equally in the upstream of the mixer.

Stevenzhang6 发表于 2020-01-27 05:18
Nope. Eventhough you’re using the RH pack for air conditioning only, as long as the Isolation valves stay in auto position, LH side will use RH side pneumatic power and the flight deck air still comes from LH ram air and pneumatics.

woshixavier 发表于 2020-01-30 12:45
我记得执照书上有说，驾驶舱是百分之百的新鲜引气