| Author |
Message |
L Clinton (69.24.8.197)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Monday, October 20, 2003 - 11:46 am: | |
I used to run a hvac business. Went to seminars on high velocity systems for remodel situations. Never installed one but really like the idea in the coach. Anyone ever do it?
The system should work about like airplanes. Anyone know where they scrap out planes with intact fuselages? Might find a deal. |
Peter Broadribb (Madbrit) (216.67.207.110)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, October 21, 2003 - 6:35 am: | |
Called a buddy in town who works for an aircraft dismantlers. He said the big aircraft use a totally different a/c system using the engines and water somehow, it was all Greek to me.
Smaller aircraft use an electric unit but runs on 48 volts or if it is 120 volt, it will be at 40 cycles.
Just reporting what I was told.
Peter. |
Richard Bowyer (Drivingmisslazy) (24.196.191.70)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, October 21, 2003 - 8:14 am: | |
Peter, FYI, AC power on aircraft is 400 hertz.
Richard |
Gary Stadler (Boogiethecat) (68.7.217.217)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, October 21, 2003 - 10:46 am: | |
At least the last time I talked to my neighbor who is in the commercial aircraft industry, he said the big planes don't really have A/C at all. What they do is suck cold air from the outside (at 28,000 feet it's REALLY cold out there), mix it with heated air from the first stages of one of the engine's turbine compressors, and pass it into the cabin. The cabin temp is controlled by how much heat is added. When the plane lands, an auxilary A/C system is one of the first things that gets hooked up to the plane.
Maybe things have changed but that's how it was a few years back...of course feel free to correct me if I'm wrong, it's just hearsay on my part.
That said, the philosophy of moving air with high velocity will work fine in your bus but due to the equipment being 400hz three phase AC, it's unlikely that the you'd get very far with any of the hardware from a plane. Also the design of a high velocity system would have to be much more carefully done to avoid whistling in your ducts...
Cheerio
Gary |
Richard Bowyer (Drivingmisslazy) (24.196.191.70)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, October 21, 2003 - 11:31 am: | |
Gary, I suspect you are correct when at altitude, however when sitting on the runway or taxiway, I suspect that there must be an auxiliary system to keep the plane cool.
Richard |
Peter Broadribb (Madbrit) (65.73.176.187)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, October 21, 2003 - 1:10 pm: | |
In 1980, we sat on the apron at Miami Airport waiting out an afternoon thunderstorm before take off. We were fortunate that we were in a wide bodied DC-10 as it was one of the few aircraft with its own ground operable a/c systems. Most others only had the in-air system and the plug-in type when on the ground. Since we had taxied away from the stand, we could not have reconnected.
When we finally took off, there was condensation pouring out of the a/c ducts all over the passengers.
Peter. |