Out building "central heating"

[-Savage-]

Hi guys, just a quick ponder. If I ask this kind of thing on a plumbing forum they would reply with something like "if you have to ask don't do it", but as we all know, I'm going to do it anyway, so any advice is much appreciated.

So....

I have a building at the bottom of my garden, about 100 yards away, so a fair distance.

I have a decked area out the front where I have a old gas bottle made into a wood stove, with a chimney and all.

What I would like to do is, spool copper pipe around the stove/chimney, and run it to a radiator inside the outbuilding so that I can fire up the stove outside, and have heat inside.

I plan to do this by using a central heating pump to circulate the water, and have a header tank (another gas bottle) at a high point in the system to allow for expansion/steam release. This header tank will be open so it can't become pressurized and can be easily topped up with water.

What are our thoughts on this?
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[stinkwheel]

My main worry would be how long the copper pipe will last. I wonder if you'd be better looking on your local freecycle/gumtree for someone getting rid of a back boiler setup.
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“Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.”
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles.

[hellkat]

This discussion makes me think of the word "lagging".
But I have a conundrum.

Y'know when someone says "He was proper lagging!" - how did it end up being called that?
It's got nothing to do with insulation of pipes, copper or otherwise.



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Not nearly as interesting in real life.

[jeremyr62]

YouTube is full of people doing similar things. They seem to live in Canada. Lowered expectation is one prolific tinkerer.

[doggone]

Unless doing this as a technical project it would be far better to buy a portable gas or diesel heater for the odd times you want heat in the shed.
The diesel heaters that come as a ready to go case with handles on are around £70 on ebay. If you have power you can get a 12v transformer to run them.

[Polarbear]

[virus]

yup, 'Van life' style cheap chinese diesel heater is the answer here for sure.
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own: 81 xs1100g...
owned: 85 rat CG (sold), 91 GS500e (stolen), 84 gsx400f (scrapped), 81 z250 (siezed, siezed, scrapped), 83 cb250rs (sold), 84 gpz750r ratfighter (killed) 84gpz400 (sold), '80 cb650 ratfighter (wrote off) 95gsx6/12f ratfighter (killed) 91 xj900 (sold)
stinkwheel Well I just had my hands up a pigs fanny. Which makes your concerns pale into insignificance.

[Freddyfruitba...]

[hellkat]

No, lagging drunk.
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Not nearly as interesting in real life.

[hellkat]

*might just be a cockney fing...

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Not nearly as interesting in real life.

[A100man]

[-Savage-]

The main reason for wanting to do it the way I had described, is that I already have a wood burner out the front of the building, and I have an old radiator inside on the wall for decoration lol.

I don't know that a wood burner inside is a good idea, as its totally timber built and carpeted with soft furnishings etc, so I'd always be afraid of the fire risk.

Potentially the diesel heater idea might be good. I could run an exhaust out through the wall easily enough.

Thanks for the input guys.
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My Bikes - - - Royal Enfield 500 with sidecar, VFR800, CBR600FX,
Peugeot Speedfight 100, Kymco Hipster 125, GSXR750K5, Jawa TS 350

[RhynoCZ]

I would probably consider having the diesel heater unit outside with the hot air conduit into the house through the wall. Diesel is not odorless and I wouldn't want to smell it inside the heated area.

You could build a small shelter for it to protect it against the elements.
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'87 Honda XBR 500, '96 Kawasaki ZX7R P1, '90 Honda CB-1, '88 Kawasaki GPz550, MZ 150 ETZ
'95 Mercedes-Benz w202 C200 CGI, '98 Mercedes-Benz w210 E200 Kompressor

[WD Forte]

[doggone]

If it's reasonably well ventilated you can get away with running the diesel heater inside for limited periods obviously ideally the exhaust should go outside but sometimes it's easier said than done.
With mine you get a hint of fumes as it starts and stops otherwise there is very little to worry about if you just have teh heat directed where you are working.
Bear in mind there are much more serious diesel heaters don't worry about exhausts at all but they are intended for large open sheds etc.
So you could try one without committing to major alterations.
https://jcb-tools.co.uk/jcb-70-000btu-20kw-diesel-space-heater-496m-coverage-kerosene-or-diesel-thermostat-jcb-sh70d/

[sickpup]

I like the latest generation of cheap Chinese diesel night heaters. They are surprisingly good quality and give out huge amounts of heat for very little fuel use. They can also be run on Red Diesel within the latest regulations if used in a residential setting.

I've recently been doing work on a large detached garage made of concrete blocks that is about 75 metres from a river in a valley so gets cold and wet due to the high moisture content of the air. The plain steel sheet roof means on cold days the moisture condenses on the underside of the roof and it rains inside.
I've gone for adding 2" EPS insulation along with a vapour barrier onto the walls with 11mm OSB over the top, as a temporary measure 2" ESP insulation under the roof and will be adding thick rubber tile matting over the floor with a reflective vapour barrier underneath as will as replacing the roof with insulated metal sheets and fitting insulated hinged garage doors.

I will more than likely be fitting a Chinese diesel heater after doing all the work.
I already have an oil filled radiator in there which keeps off the chill extremely well but doesn't heat it up as such, just stops it from freezing.
The Diesel heater will give good instant heat and should be able to heat the garage into the 20's in about 20-30 minutes.

Its no use fitting just a heating system if you are losing heat everywhere else, it'll just cost a fortune to run so look at insulation as well, it's not cheap but will be worth it in the long run.
I've found the difference with the insulation added is quite impressive. Its removed all surfaces for moisture to condense on and improved the general feel and even smell of the garage, it now feels like a garage instead of a damp outhouse and items left in there don't instantly corrode.