Bus Conversion Magazine Bulletin Board
June 21, 2018, 12:52:53 PM *
Welcome, Guest. Please login or register.

Login with username, password and session length
News: If your computer is lost, damaged, or stolen, your Online mags will be safe.
   Home   Help Forum Rules Search Calendar Login Register BCM Home Page Contact BCM  
Pages: [1]   Go Down
  Print  
Author Topic: Bay Temps. With ProHeat  (Read 1961 times)
captain ron
Guest

« on: November 28, 2007, 05:02:43 PM »

It is 32 deg. outside so I thought I'd do a little checking of bay temps and to my surprise it was 80 deg. at the top of the bay and 74 deg. at lower portion of bay with the PH in it. Not shooting near the PH. The rear bay with my water tank and most of my pluming is 74 deg. not shooting near the pex lines. This is very good news to me. I think I'll put a small 12 volt computer fan from the middle bay where my PH lives to my front bay that is all storage. I couldn't check the temp there because the bay doors are open and even if they were closed it's open to the area where I removed the bus heat which is open the screen where the old condenser was.
Logged
JohnEd
Hero Member
*****
Offline Offline

Posts: 4571




Ignore
« Reply #1 on: November 28, 2007, 05:15:08 PM »

Charlie,

I had been thinking about the PH exhaust and all the BTU's that are going out the window.  My thought was to take the ex from the boiler and get it up high with a vertical run then take it down with a series of u  turns.  I thought I could get almost all the energy back before I dumped it out the bottom of the bay.  My chief concern was that as I cooled the ex gas I would get a ton of condensate so my solution was the quick up shot and then a naturally draining "heat exchanger" down to the outlet point.  The PH system is only used with cold weather but I suspect that this heat recovery system would need an ex fan to dump the heat in mild weather.  You know..."enuf is enuf but too much is plenty."

Comments?

Thanks,

John
Logged

"An uneducated vote is a treasonous act more damaging than any treachery of the battlefield.
The price of apathy towards public affairs is to be ruled by evil men." Plato
“We can easily forgive a child who is afraid of the dark; the real tragedy of life is when men are afraid of the light.”
—Pla
captain ron
Guest

« Reply #2 on: November 28, 2007, 05:28:56 PM »

I was planning on at some point recovering some of that energy for my WVO extraction system I will be installing for quickly heating up 55 gallon drums in the winter time but I think it would be overkill for anything else as my above post shows a very good amount of heat that is way more than really needed. Even in extreme conditions I believe it will keep all bays well above freezing and I mean well above. In the summer the only time I will need it is when boon docking as I have an electric side to my water heater and when the engine is hot it will heat the domestic water. I will put in some type of simple heat exhaust fan to get rid of unwanted heat from the bay in the summer also.
Logged
TomCat
It's 4:20 somewhere...
Sr. Member
****
Offline Offline

Posts: 411



WWW

Ignore
« Reply #3 on: November 28, 2007, 06:00:33 PM »

Charlie,

I had been thinking about the PH exhaust and all the BTU's that are going out the window.  My thought was to take the ex from the boiler and get it up high with a vertical run then take it down with a series of u  turns.  I thought I could get almost all the energy back before I dumped it out the bottom of the bay.  My chief concern was that as I cooled the ex gas I would get a ton of condensate so my solution was the quick up shot and then a naturally draining "heat exchanger" down to the outlet point.  The PH system is only used with cold weather but I suspect that this heat recovery system would need an ex fan to dump the heat in mild weather.  You know..."enuf is enuf but too much is plenty."

Comments?

Thanks,

John

John Ed,

My ProHeat X45 installation manual specifies no more than 180* of turns, in five feet of length for the PH exhaust system. I believe that is based on a exhaust pipe size of 1 1/2 inches. Larger pipe may allow more creativity in your system.

Jay
87 SaftLiner
Logged

On The High Plains of Colorado
bobofthenorth
Hero Member
*****
Offline Offline

Posts: 2427



WWW

Ignore
« Reply #4 on: November 28, 2007, 08:23:07 PM »

There's a lot of sensors and digi-crap built into those ProHeat controllers.  My guess is, if you try to get too creative on the exhaust the sensors will read it as an obstruction and the thing won't light.

Logged

R.J.(Bob) Evans
Used to be 1981 Prevost 8-92, 10 spd
Currently busless (and not looking)
My website
Our weblog
What's behind you doesn't matter - Enzo Ferrari
captain ron
Guest

« Reply #5 on: November 28, 2007, 08:33:00 PM »

The only thing I would do is pipe it through a heat exchanger i.e. coiled copper tubing or a jacket type housing that water flows through. Nothing to restrict or change the flow of the exhaust.
Logged
JohnEd
Hero Member
*****
Offline Offline

Posts: 4571




Ignore
« Reply #6 on: November 28, 2007, 10:24:44 PM »

Well there is heat energy there and I don't like to see it go out the window as a matter of principle.  Still, don't want to shoot off any of my toes or cut off my nose to......

I guess we can keep thinking.

John
Logged

"An uneducated vote is a treasonous act more damaging than any treachery of the battlefield.
The price of apathy towards public affairs is to be ruled by evil men." Plato
“We can easily forgive a child who is afraid of the dark; the real tragedy of life is when men are afraid of the light.”
—Pla
prevost82
82 Prevost 8V92ta 6 speed
Hero Member
*****
Offline Offline

Posts: 555


82 Prevost Marathon XL




Ignore
« Reply #7 on: November 29, 2007, 09:23:38 PM »

I have to agree with Bob. I heard of a few guys having problems with too many bends in their exhaust on the unit would shut down ... can't remember if one of them was B Brown.
Ron
Logged
donnreeves
Jr. Member
**
Offline Offline

Posts: 72





Ignore
« Reply #8 on: November 30, 2007, 01:58:40 PM »

I put a small straight through muffler on my Pro-Heat to try to quiet it down. Within a week it clogged up the PH with soot and I had to pull the combustion chamber apart to clean it out. The exhaust is sensitive, but a short run with a heat exchanger might be OK.  Donn
Logged
captain ron
Guest

« Reply #9 on: November 30, 2007, 02:03:19 PM »

The heat exchanger I was talking about would have no effect on the PH exhaust as the exhaust runs through it and is not restricted in any way.
Logged
buswarrior
Hero Member
*****
Offline Offline

Posts: 4567


'75 MC8 8V71 HT740




Ignore
« Reply #10 on: December 02, 2007, 06:58:43 PM »

Hello.

Why not a simple 90 degree, through the bulkhead into the next bay, and then 90 degree out the floor?

Pipe will give off a good bit of heat by itself.

happy coaching!
buswarrior
Logged

Frozen North, Greater Toronto Area
captain ron
Guest

« Reply #11 on: December 02, 2007, 07:47:36 PM »

No more than 180 degree turn in 5 feet your way would have it pointing straight down and believe me it is still hot and could easily cause a grass fire. As far as heating the bays there is nothing more really needed.
Logged
NewbeeMC9
NewbeeMC9
Hero Member
*****
Offline Offline

Posts: 1208


1981 MC9 8V71, HT 740




Ignore
« Reply #12 on: December 02, 2007, 08:14:19 PM »

You could split it into multiple pipes or rectangular tubing and run it under or through a  coolant resivoir, (ot make one and and run it thru it)  be sure the tubes point down so condensate can get out.  will help with cycling.  maybe a little slower to react but will be expedited by hot exhaust and capture some that you're wasting.  Would quiten it down some too.
Logged

It's all fun and games til someone gets hurt. Wink
Pages: [1]   Go Up
  Print  
 
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.18 | SMF © 2013, Simple Machines Valid XHTML 1.0! Valid CSS!