Flat Plate Heat Exchanger Installations - Topic Powered by eve community

Ryan,

I agree with John above re the angle of the installation. The instructions on these units state/picture to install them upright. I am not sure why this is, but it may be to stop a build up of materials in the fine corrogations inside the HE as John says, or minimising air locks is another explanation I've heard.

Your insulation around it looks pretty good, and I am impressed by your temperature figures. They are better than mine, so the trouble you went to with insulation, and maybe even laying the unit flat, is obviously working as intended.

My instal is at http://members.iinet.net.au/~tim.law/landcruiser/heater/

Regards
Tim

Location: Perth Western Australia | Registered: 30 December 2005

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Tony from West Oz (The Wizard of Oz)

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The reason for mounting them vertically (in both planes) is to avoid air bubbles in them which reduces liquid-plate contact and reduces the effecienvy of the FPHE.
Remember that the connections for one or other fluid will be on the low side and thus the high side of that series of chambers will have a significant amount of air present, which cannot be purged from the FPHE by the turbulent flow.

Mounted vertically, only a small amount of each chamber will have air present (above the top connections).

"Fatmobile 3" '84 MB300D Silver/Grey with dark blue interior. 290kkm My car - 2 tank UCO conversion working well. 22 000 km so far on UCO
"Josephine" '82 MB300D White with Palamino MBtex interior. 385kkm Wife's car. 20 000km on UCO blends.
"Elizabeth" '81 MB 280E Good body now re-engined as a 300D with the engine from the '79 300D.70 litre UCO tank, 2 pollacks switch FP, filters and IP between Start and UCO tanks.

'79 300D poor body (donor & parts)

"Fatmobile 2" '80 MB300D White with dark Blue interior 230kkm (My first MB) - 5000 km on biodiesel / UCO blend - Found new owner (Sold in 2004).
"Fatmobile" a '90 Mazda 2 litre diesel on UCO with biodiesel start/purge. - SOLD in Dec 2003 after 40 000km on UCO.

Location: Perth W.Australia | Registered: 10 August 2001

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EuDeMan

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hey all
I have yet to install my FPHE b/c I was holding out for exact fittings to mate w/ the GB4 (3/4" GHT) thread on the outlet ports
but how about threading the inside of the ports instead?
looks like they'll take a 1/2" NPT thread
and if I hold it upside down when I'm cutting them, presumably any loose cuttings will fall out
then a brass barb will fit right in there
any reason not to do it this way?
thanks

rOLf

2 yrs and 100k mi on WVO - '93 VW EuroVan 2-tank w/ tank heat/HOH/10-micron heated Fleetguard, FPHE

Location: NE USA | Registered: 09 April 2005

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B.K. Hosken

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I know Dana L. rethreaded his to accept NPT fitting, he said it took 10 minutes with a thread cutting die. I tapped the inside of one side of mine for 1/4" NPT, for the fuel barbs, the threads were a little shallow but I put on sealer and it hasn't leaked yet.

1985 Mercedes 300D, sold, Heat exchanger and injector line heaters, all single tank. 1996 Suburban, 2 tank conversion. 1997 E300D awaiting conversion

Location: Cocoa Beach FL | Registered: 12 September 2005

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danalinscott

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I believe if this is done on the coolant inlet/outlet it will restrict coolant enough to significantly diminish the final temp of the VO passing through..at least on larger engines.

quote:
Originally posted by EuDeMan:
how about threading the inside of the ports instead?
looks like they'll take a 1/2" NPT thread
and if I hold it upside down when I'm cutting them, presumably any loose cuttings will fall out
then a brass barb will fit right in there
any reason not to do it this way?
thanks

Dana
दान

danalinscott@yahoo.com
http://vegoilconversions.netfirms.com/

VegOil Conversions by Dana Linscott- VO Conversion
Consultation for large and small trucks, VO fuel related businesses, and co-generation(power/heat)projects,

Location: Central MN..Brrrrrr! | Registered: 06 November 2001

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B.K. Hosken

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Dana, he said he's starting with a 3/4" fitting, not a 1/2" like we got. That should be big enough, right?

1985 Mercedes 300D, sold, Heat exchanger and injector line heaters, all single tank. 1996 Suburban, 2 tank conversion. 1997 E300D awaiting conversion

Location: Cocoa Beach FL | Registered: 12 September 2005

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danalinscott

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quote:
Originally posted by B.K. Hosken:
Dana, he said he's starting with a 3/4" fitting, not a 1/2" like we got. That should be big enough, right?

Yup..my bad!
Reading too fast.

Thinking too slow.

Location: Central MN..Brrrrrr! | Registered: 06 November 2001

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Mr Ryan Mix

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Holy smokes! It’s still in the mid 30sF here in Rochester, NY, and my heat exchanger is really cooking now! I took a trip to the dentist (about 15 minutes expressway travel) today and my fuel was steady between 175-185 without use of the Vegtherm! I’m a bit anxious about warmer weather and will have to do some research on how hot is too hot. Maybe the insulation is a bad idea...

Re: Installation orientation ( I like the sound of that...): Thanks for the info. I had not thought about sediment and air build up in the heat exchanger, but I'm not too worried about it. I got another heat exchanger once that suggested the same, but said when upright installation is not possible, laying flat is acceptable- just never downside-up.

Location: Tallahassee, FL | Registered: 22 January 2006

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Old300D

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quote:
Originally posted by Mr Ryan Mix:
Holy smokes! It’s still in the mid 30sF here in Rochester, NY, and my heat exchanger is really cooking now! I took a trip to the dentist (about 15 minutes expressway travel) today and my fuel was steady between 175-185 without use of the Vegtherm! I’m a bit anxious about warmer weather and will have to do some research on how hot is too hot. Maybe the insulation is a bad idea...

Re: Installation orientation ( I like the sound of that...): Thanks for the info. I had not thought about sediment and air build up in the heat exchanger, but I'm not too worried about it. I got another heat exchanger once that suggested the same, but said when upright installation is not possible, laying flat is acceptable- just never downside-up.

That's a good thing. You don't have to worry about warmer weather, the oil will not get hotter than the coolant temperature.

'05 Jeep Liberty CRD
'83 Benz 240D with 617.952
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When the power of love overcomes the love of power, the world will know peace -- Jimi Hendrix

Location: Denver, CO USA | Registered: 19 June 2003

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Bryan Kast

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My pollak is going to die if I get heat like that

Registered: 05 January 2006

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Mr Ryan Mix

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[/QUOTE]That's a good thing. You don't have to worry about warmer weather, the oil will not get hotter than the coolant temperature.[/QUOTE]

Isn't it possible that the coolant temp may be hotter in the summer?

Location: Tallahassee, FL | Registered: 22 January 2006

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Old300D

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quote:
Originally posted by Mr Ryan Mix:
quote:
That's a good thing. You don't have to worry about warmer weather, the oil will not get hotter than the coolant temperature.

Isn't it possible that the coolant temp may be hotter in the summer?

Not if your thermostat is operating properly. The cooling system is designed to keep the engine at a constant temperature.

'05 Jeep Liberty CRD
'83 Benz 240D with 617.952
OBK #35

When the power of love overcomes the love of power, the world will know peace -- Jimi Hendrix

Location: Denver, CO USA | Registered: 19 June 2003

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EuDeMan

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quote:
Originally posted by danalinscott:
quote:
Originally posted by B.K. Hosken:
Dana, he said he's starting with a 3/4" fitting, not a 1/2" like we got. That should be big enough, right?

Yup..my bad!
Reading too fast.
Thinking too slow.

actually, Dana was right
I have the same FPHE you guys got - was quoting wrong size pipe - opening is 1/2" true = 1/4" NPT
I got to the store and thought exactly what Dana said and ended up getting female (external) NPT adapters so as not to restrict coolant flow
if junction feels iffy I'll have threads cut to NPT
(I think adapters for these particular threads may be available though - in the US they seem to be called GHT (garden hose thread) instead of GB (Europe/Japan))

rOLf

2 yrs and 100k mi on WVO - '93 VW EuroVan 2-tank w/ tank heat/HOH/10-micron heated Fleetguard, FPHE

Location: NE USA | Registered: 09 April 2005

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Bryan Kast

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I got mine in, but I can't get the whole system to burp (this is the first time it is up and running) There is a picture on my burping thread: http://biodiesel.infopop.cc/eve/forums/a/tpc/f/159605551/m/8121080531

Registered: 05 January 2006

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EuDeMan

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quote:
The FPHE should be downstream of the fuel selector valve.

??
I'm not doing this
do you really want 180° diesel fuel in your IP?

rOLf

2 yrs and 100k mi on WVO - '93 VW EuroVan 2-tank w/ tank heat/HOH/10-micron heated Fleetguard, FPHE

Location: NE USA | Registered: 09 April 2005

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