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Author Topic: Thermal store  (Read 1836 times)
duke700
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« Reply #30 on: January 11, 2019, 10:12:57 PM »

Hi Guys

I've insulated the stove circuit with 13mm insulation and taped it at all joints, the walls to the house have no insulation in them so they will be upgraded room by room and the floors and attic.
Yes the thermometer just pulls out so i can fit the device in.
Should I just buy the one at a 1.40?
Notice there are two options to this one?

Thanks
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daveluck_uk
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« Reply #31 on: January 12, 2019, 09:35:23 AM »

To control the pump get the 11.65  TEMPERATURE CONTROLLER

Buy the cheap digital THERMOMETERS for reference only.

I would attach them to ( I've just fixed the sensors to the pipe with aluminium tape )

1. Incoming boiler pipe near to the boiler - so you can see what the boiler is heating from
2. Outgoing boiler pipe near to the boiler - what temp the water is being heated to to make sure its hot enough to heat the water in the store past pump switch on temp
3. Exit point ( or near to it ) of your central heating - so you can see what temp the water is that commences its journey through the rads
4. Return of your central heating - so you can see how much heat is being taken away and you can then decide what speed to put your pump on.

And buy a few spare thermometers. They're great. I've got them attached to all sorts of things!


Edit.... I just found this!

https://www.amazon.co.uk/Inkbird-Temperature-Controller-Thermostat-Regulator/dp/B018K82UQU/ref=pd_sim_60_1?_encoding=UTF8&pd_rd_i=B018K82UQU&pd_rd_r=a32a1a31-1654-11e9-855a-f1afcfd0d9ad&pd_rd_w=ci59H&pd_rd_wg=Eedhp&pf_rd_p=1e3b4162-429b-4ea8-80b8-75d978d3d89e&pf_rd_r=X0HMP1FR6160DSCS7FH5&psc=1&refRID=X0HMP1FR6160DSCS7FH5

That might be easier to install.
« Last Edit: January 12, 2019, 10:16:36 AM by daveluck_uk » Logged
eabadger
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« Reply #32 on: January 12, 2019, 12:24:45 PM »

been using these for 4 years now, seem fine and only 3 each.
check top and bottom of cylinder.
check rise and fall of wood boiler.
check return on pump ect.
can set relay to operate on positive or negative heat, if that makes sense.
extended probes with cat5 no issues.

steve


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1600w PV main array at 24v, excide 2v 1000a forklift cells now x 2, 320w PV secondary array at 12v. Enfield 1944 ex RAF 5.6kw diesel genset (now in pieces, big ends gone), Petter AC1 28v diesel charging set at 2.8kw.
1kw wind turbine.
26kw wood stove back boiler to underfloor heating and dhw
duke700
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« Reply #33 on: January 12, 2019, 02:26:04 PM »

Cheers guys , looks like you have underfloor heating steve?
Ill buy the device from Amazon , probably easier for me..

Enjoy your weekend.

Thanks again
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eabadger
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« Reply #34 on: January 12, 2019, 05:02:02 PM »

underfloor heating downstairs about 100sqm.
rads on upper 2 floors, about 16 i think, all off the wood stove! which is meant to be 30kw, not sure about that.
works a treat, all temp sensors set to switch whatever on at certain temps.

steve


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1600w PV main array at 24v, excide 2v 1000a forklift cells now x 2, 320w PV secondary array at 12v. Enfield 1944 ex RAF 5.6kw diesel genset (now in pieces, big ends gone), Petter AC1 28v diesel charging set at 2.8kw.
1kw wind turbine.
26kw wood stove back boiler to underfloor heating and dhw
regen
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« Reply #35 on: January 12, 2019, 05:14:50 PM »

Our wet underfloor heating works well with the 21kw WBs. It only covers about 50% 0f the ground floor but in conjunction with internal insulation on walls and lots of loft insulation it keeps the whole house at around 22 deg. Although there are rads throughout the house they are very rarely used e.g. only after house empty for a week at xmas. there is enough migration up the staircase together with the thermal store in the upstairs bathroom to heat the upper floor. Typically was lit at about 7.30 am and UFH turned on so down stairs comes up to 22 from about 18 and stays there until about 19.00 when WBS  allowed to go out and UFH turned off. Very occasionally store drops below 45 deg when the oil boiler comes on automatically. If we run the Central heating rads then the WBS does not keep up and oil cuts in because the 300 litre store is not a large enough buffer even with the 21kw stove. If the stove was run very hard then it may keep up but the lounge would be uncomfortably hot. Running it this way we could easily manage with a much smaller WBS. INSULATION really is the key.

Regen
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3.92w freestanding PV with sb3300 +Imersun
21kw Stratford T70 woodburner
 300litre thermalstore with 3kw and 1kw immersions
 Wall star 25kw oil boiler
  Spring water supply with uv and ro membrane
 Sheep, poly tunnel and approx 80 sq m of raised veg beds.
eabadger
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« Reply #36 on: January 12, 2019, 05:29:17 PM »

no thermal store on ours.
massive insulation in roof and floor, over sized slab
but no insulation in walls, 1m thick stone lime plaster internally, light stove about 11am, off about 10pm.
enough hot water for 6 and house averages 22*  Smiley
we love it, best thing we ever got.

steve
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1600w PV main array at 24v, excide 2v 1000a forklift cells now x 2, 320w PV secondary array at 12v. Enfield 1944 ex RAF 5.6kw diesel genset (now in pieces, big ends gone), Petter AC1 28v diesel charging set at 2.8kw.
1kw wind turbine.
26kw wood stove back boiler to underfloor heating and dhw
duke700
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« Reply #37 on: January 12, 2019, 06:14:30 PM »

Great to hear guys..
Think insulation is the key first and the windows...
What sort of stove is that Steve?
This has been one big learning curve for me..
Nice to see and hear other people are managing with these systems,its great fun!

Thanks again for all your input.
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