Connecting a hose to copper pipe... Across an ibc

[Shaunyboy]

I am making a wood fired hot tub using an ibc and a cast iron water jacket from an old oil boiler system.

I'll be connecting the jacket to the ibc using 22mm copper pipes. I am keeping it simple in the hope the convection will circulate the water and I won't need a pump....if this doesn't work I'll add a pump later.

However I want the option to pass the water through the jacket when the ibc is initially being filled, so that the ibc is filled with warm water straight away. So my thinking was to have the lower cold water intake to the jacket to have a hose pipe connection on the inside of the ibc so I can connect the hose, turn it on, water goes through the jacket and comes out the to hot and fills the ibc. Once the ibc is full, I can disconnect the hose from the inside of the tub and it can carry on warming via convection.

Sounds very simple but I can't find a tank connection with a hose pipe connection on one side and a 22mm pipe connection on the other. I can easily find hose ibc attachments, 22mm pipe ibc attachments and hose to 22mm pipe connections... But nothing that will do it on either side of a water tank.

Surely there must be a product out there for this but I am just not sure of the terminology.

Thanks in advance

 

[rpm]

Not sure I fully understand what you are doing however google Symmetrical Nipples.

 

[SimonG]

Dont bother. It wont instantaneously heat the water sufficiently whilst filling.

 

[king of pipes]

Good luck with that one. Kop

 

[Ric2013]

What is an ibc?

This message contains over 20 characters now.

 

[SimonG]

Normally a 1000ltr plastic tank about 1000mm x 1000mm x 1000mm in a steel cage.
Big for window cleaners in the back of a can.

 

[Brambles]

I would think this through very carefully before getting your tools out.

To heat an IBC to 40 degrees ( from 10 degrees C) with a decent wood burning boiler (6kw) would take you around 7 hours. If you are making your own stove with a grate, old boiler heat exchanger and chimney - you probably won’t get 6kw. I guess your neighbours won’t be too pleased either with “puffing billy” pumping out woodsmoke all day.

You need to ensure that the system is properly vented and think through the safety, dump valves and relief systems, to ensure that at all times the pressure is at atmospheric.

On the basis that your tub water is going through the primary heat exchanger - cleanliness of the water and maintaining it will be an issue to address.

Whilst the IBC will maintain its integrity when heated to 60 degrees C ( we use that temp for cleaning them) - they must at all times be at atmospheric pressure.

On the same basis the pressure differential across your whole system must not exceed 0.5bar. If it does or has the potential to do so, it must confirm to the Pressure Equipment Directive - which you cannot on a DIY basis.

Good luck and have fun

 

[Shaunyboy]

Not really getting much help on this post in terms of actually answering my question.... Just alot of doubt. It's amazing how passive aggression can be masked with an insincere polite line at the end of a message.

I hooked up a practice run yesterday to make sure it was all working ok before I clad it this weekend... And I had to tinker with it to get it right, and it won't be the exact plumbing in the end, but.... I filled the ibc container to 800 litres at a temperature of 33C. This included around 200 of normal 10C water before I actually got the fire going. Then after a while of the jacket not heating up the water efficiently I removed the baffles and got a larger fire going inside. It took just over 2 hours to fill the ibc.

I have a (practically) unlimited water supply from a spring source under a Munro. The water pressure isn't great for a shower but turns out it's perfect for putting it through the water jacket. Not too fast that it's cold. Not to slow that it's too hot.

I live in the middle of the countryside. I heat my home with wood throughout winter... So a small open fire on the occasional night in summer isn't going to bother my neighbour who live a ten minute drive away.

With regards to pressure equipment directive... It's a bit of backyard fun for me and me only. Maybe the misses if I am lucky. If you set up a zip line in the back garden for your kids do you ensure its compliant with loler regs... No. If you built I tree house or have people over on your decking do you make them do working at height? If so do people actually still come to your BBQs?

Sorry that turned into a rant. I do appreciate replies. But I'd appreciate a solution (which I think I have figured out anyway) rather than people being pessimistic.

Cheers

 

[SimonG]

Half a story to start and a twist because you didn't get chapter and verse.

Crack on.