Heat Exchanger Tappings, any suggestions??

[Mike2007]

I have bought a flat-plate heat exchanger with no tappings(threads) in it! How do I attach fittings and what sort, holes about 1/2 inch.
Here is the item;

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[EliteHeat]

The threaded connection on the LH side is a clue to the answer you're looking for!

 

[spacethegas]

what are you proposing to do with it ?

 

[Mike2007]

The threaded connection on the LH side is a clue to the answer you're looking for!

I thought if you were an engineer you would at least have one answer not a riddle!

 

[Mike2007]

what are you proposing to do with it ?

Before anyone quotes a paragraph/ sub-paragraph, it absolutely nothing to do with the old chestnut GAS

 

[Agile]

Its difficult for us to guess why you have bought that and what you want to do with it.

Its a plate HE as used in many 24 kW combi boilers.

Its connection to the boiler is by screws into the threaded bushes and the water seal is by rubber "O" rings.

Tony

 

[Mike2007]

Its difficult for us to guess why you have bought that and what you want to do with it.

Its a plate HE as used in many 24 kW combi boilers.

Its connection to the boiler is by screws into the threaded bushes and the water seal is by rubber "O" rings.

Tony

I thought I was buying a HE with threaded connections, the I would fit brass fittings. I want to use it for a bio-diesel X coolant heat exchanger, but seem to have come unstuck?

 

[wiggikins]

Haven't you just!

 

[spacethegas]

what are you proposing to do with it ?

Before anyone quotes a paragraph/ sub-paragraph, it absolutely nothing to do with the old chestnut GAS

you just needed to explain your problem clearly in the original post.

 

[Mike2007]

when I have solved this proplem alone I get back and let you know, then you can laugh once more perhaps!

 

[Gasguru]

Either buy a new plate with threaded fittings

or buy powerflushing pump adapter plates (plastic blocks that screw on with threaded fittings)

or have some blocks machined up

 

[ChrisR]

You'd probably find that heat exchanger is brazed together too, for which I believe the fuel would be too corrosive.
The same companies who make hexs for boilers do make all-steel ones.

 

[Mike2007]

I was only going to put veg oil through the heater as proper bio is corrosive to everything! Whats the metal on these things copper + plating, can't quite tell?

 

[Gasguru]

Each stainless plate is brazed to the next with a thin copper sheet sandwiched in-between.

Alfa Laval now do an all stainless....but it's doubtful you could get hold of just a single hext ex. Not sure if any boiler manufacturers are using them yet since galvanic corrosion is not really encountered to warrant their use.

I hope you realise the friction pumping oil through this type of heat exchanger will need a sizable pump. Have you considered fabricating a simple stainless coil within a tube heat ex. arrangement?

 

[Agile]

Either buy a new plate with threaded fittings

or buy powerflushing pump adapter plates (plastic blocks that screw on with threaded fittings)
or have some blocks machined up

I think it would be cheaper to buy a plate HE with the threaded connections that buying Keith's adapter!

I bought one of them and a pump adapter but they were stolen while inside a vehicle which was stolen.

Tony