Author Topic: FPHE (Read 17819 times)

K.H · « **Reply #15 on:** January 13, 2011, 07:30:07 PM »

Missus answered the door to him the other day,he was dropping off some piezo igniters from scrapped boilers,only trouble was he was holding the wire against the door handle and pressing the button when she opened it

Julian · « **Reply #16 on:** January 13, 2011, 09:16:24 PM »

Besides being a bit of a joker, he sounds like an excellent source of supply for bits that "might be useful one day".

K.H · « **Reply #17 on:** January 13, 2011, 10:55:02 PM »

Theres got to be some use for this heat exchanger but god knows what

Julian · « **Reply #18 on:** January 13, 2011, 11:48:10 PM »

You posted that before didn't you? Couldn't think of a use of a use then and still can't, but it must be worth 20-30 quid scrap!

Bio Dervotee · « **Reply #19 on:** January 14, 2011, 12:03:35 AM »

Hi folks, processor will be ok for another couple of batches,[ about 75litres a batch], its a gas bottle with the bottom cut off and legs welded on top, then inverted, top has 1 inch bsp hole which is now bottom drain. Anyway when new processor is ready then old one becomes dewatering tank. intend to go with twin tank/gl setup with interlocks and remote control using 12volt car relays.
I would be happy to help with the site but right now I am unable to get much free time as my missus has been in hospital since 1st jan and is not very well, at least she didn`t get me after shave for xmas, unlike several years ago. got 2 bottles, worse still, 1 was from my mum!!!

Fphe is exact same as Julians, 7 interleaved fingers, chevron design on top etc. still there if anyone wants it.
haven`t tried turmeric titration yet, it seems to be pretty straightforward, will let you know how it goes, ph meter would not give consistent readings.
It has been so cold up here that even good oil is like treacle.
cheers folks, speak to you`s soon
Will

Tony · « **Reply #20 on:** January 14, 2011, 12:54:27 PM »

Hope your missus gets better soon Will.

And yes, it's not much fun making bio in the cold!

Julian, I'm not sure I should trust a man with a beard with my FPHE, but the offer is too good to turn down.

Shall I post it with some lengths of 15mm pipe?

Julian · « **Reply #21 on:** January 14, 2011, 02:38:10 PM »

Will ...

Likewise, I wish your better half a speedy recovery. If you would like 15 mm tails (or hose tails, if you supply them, or I could make the tails if you supply the lumps of brass) added to your HE, let me know.

Tony ...

Just the HE will be fine, I've got copper tube coming out of my ears, let me know the dimension from the face of the HE to the ends of the pipes (shorter will make return postage easer). I'll try sticking it in the acid bath for a few days to clean it out so it will probably come back copper plated ... it's a very well used acid bath!

I'll PM my address.

PS stick to Pumpophilia rather than Pogonophobia.

Tony · « **Reply #22 on:** January 14, 2011, 10:59:13 PM »

I'm just highly amused that there is a word for fear of beards

Bio Dervotee · « **Reply #23 on:** January 23, 2011, 02:22:40 AM »

Hello folk`s,, just got another FPHE . definitely now going to go twin tank and see how it goes. have run other people`s transits on svo but there is a problem there and we won`t mention anything else

have also found a barometric pressure sensor in the bits that came to me. looks the same as washing machine sensor. I will try to see what pressure it switches at and let you all know, combi boilers are a great source for parts but the bits I got are all mostly plastic connections with o ring fittings. this was dated 2004
even the pump was plastic

cheers folk`s
Will

K.H · « **Reply #24 on:** February 17, 2011, 10:59:22 PM »

Im going to melt two FPHE tomorrow (sorry i mean silver solder some fittings on) i will see if i can follow Julians advice and ive got my camera ready

Tony · « **Reply #25 on:** February 17, 2011, 11:47:02 PM »

I'd be interested in the outcome - I really should post mine off to Julian, as I keep thinking that rather than a SHHE, it would be very interesting to experiment using it as a condenser in place of the traditional plumbers delight.

I don't know of anyone that's tried this though it has been discussed on the forum before - I'd like to give it a whirl with Julian's help.

Bio Dervotee · « **Reply #26 on:** February 18, 2011, 12:32:31 AM »

Hi folk`s, still got 2 fphe`s, thinkin about using one of them in the area where oil tank will be boxed in to help oil flow better, goin to use --- guess what, aye, another gas bottle, 110 litre , that`s Glasgow to London with a transit and run bio in normal tank just in case of any problems. Also just got 2 boxes of brand new heater plugs so might try in line heating.
Anyway this will be happening in next week or two, will let you know how it goes, cheers,
Will

Julian · « **Reply #27 on:** February 18, 2011, 12:41:57 AM »

Tony ...

Great minds ... if you remember the thread, I've got a commercial, multitube unit as a SHHE. It only knocks about 10°C off the vapour temperature entering the plumbers delight and adds about the same to the returning air.

I've been toying with the idea of running the vapour outlet from the PD direct back to the venturi, running water through SHHE and chilled water from the beer chiller through the PD. With the current set up the vapour leaving the PD is within 1 or 2 degrees of the cooling water. As I can now get the chiller down to -8°C, it would be interesting to see if that speeded up demething. Don't think water freezing would be a problem as it's miscible with Methanol.

Ready when you are for the FPHE.

I've got a feeling someone does already use a FPHE, not sure who and not sure if it's as a PD or a SHHE. From the little playing I've done with FPHEs I suspect that they may suffer from a build up of liquid between the plates which may reduce the efficiency. Fill it with water and then try and get it out. It's almost impossible, even blowing it through with an air line. Just wondering if the vapour will find a narrow path through the plates with the rest of the space filled with Methanol, thus reducing the contact area. No hard facts, just a gut feeling. There's really only one way to find out!

Will ...

Sounds interesting, keep us posted and don't forget to take photos of any mods for the wiki.

Tony · « **Reply #28 on:** February 18, 2011, 09:58:38 AM »

110l - whew, that's a fair sized gas bottle.

A couple of years ago I did ponder getting someone to weld a couple of big gas cylinders end to end to make a processor - however I suspect most people would be unwilling to do such a thing for me

Julian, interesting - I was wondering about trapped liquid. My thought was that the first litre from demething should be discarded.

It's that or not dewater with the condenser?

Julian · « **Reply #29 on:** February 18, 2011, 10:29:58 AM »

That too would be a problem but you could have two one for water and one for Meths.

Re cutting and welding a gas bottle. It's possible to do it quite safely. Did it once before to make an air receiver and I currently have a 50 litre bottle I'm thinking of making into a crud heater.

Just unscrew the fitting ... very tight and sealed with compound, but doable. Then fill with water and empty.

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