keitha
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Post by keitha on Nov 16, 2024 10:15:02 GMT
looking at various things and I found a quiz by NESTA www.getaheatpump.org.uk/quizone question do you have an outside space of 600 square metres ( 3 tennis courts ) - honestly how many houses are on plots of 600 square metres let alone 600 of outside space, for most terraced property 60 square metres of space is big and I could show you some extended ones with less than 10 free |
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adrianc
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Post by adrianc on Nov 16, 2024 11:31:37 GMT
 Go on, read that last sentence and engage brain before getting all offended and outraged... It doesn't mean you can't have an ASHP if you have less... If I answer "no", it says "ASHP". If I answer "yes", it says "ASHP or GSHP"...
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keitha
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Post by keitha on Nov 16, 2024 13:08:57 GMT
I did know that, the point is what percentage of houses have 600 square metres of outdoor space.
GSHP can go vertical as well with deep boreholes.
so you can have
GSHP ( Extracts heat from Ground via long loops of tubing filled with fluid),
ASHP ( extracts heat from the air ) and runs it through a system usually the existing radiators etc )
ASHP A2A ( extracts heat from the air ) and blows it into the house, ie Air con and can of course cool in the summer
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adrianc
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Post by adrianc on Nov 16, 2024 16:10:36 GMT
I did know that, the point is what percentage of houses have 600 square metres of outdoor space. ...but your post suggests heat pumps aren't an option without it. They are. Having lots of space just opens different options. We could find 600m2 for GSHP without issue. When we go HP (when the current LPG boiler goes) we'll probably go AS, simply because of the disruption factor of digging up that much of a well-established heavily-treed plot.
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keitha
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Post by keitha on Nov 16, 2024 17:06:57 GMT
It was intended to suggest that I mean how many flat dwellers have any outdoor space and yes I know they could have a communal system
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benaj
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Post by benaj on Nov 16, 2024 19:58:31 GMT
I looked at one annual statement from my tenants, the two bedroom flat used 5000kWh for heating and water with communal heating network and a MVHR system, unit cost 6p per KWh with standing charge 16p a day.
It seems reasonable.
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mikeb
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Post by mikeb on Nov 17, 2024 18:04:40 GMT
GSHP can go vertical as well with deep boreholes.
True. But from a cost/engineering point of view, doesn't it make it an easier job to lay 3 tennis courts worth of pipe all over your garden (destroying it in the process) in a relatively shallow flat system, rather than having to bring in a crane and drilling rig to go off down past the water table and looking for hot rocks  ?
I suppose that's why they ask the question. Yes, technically you COULD put a GSHP in a postage stamp back garden as long as you drill down far enough, avoiding the coal mines and secret bunkers, but frankly we don't want to be bothered with that.
Like the loft-insulation-top up schemes. When they get to the killer questions about "and has the loft been converted?" -- "Oh yes, boarded out, walled in, painted etc. Can you <click> still get the insulation in? Hello? Hello? Oh, must've been cut off. What a shame."
Movin' on to the easier prospects.
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Post by crabbyoldgit on Nov 17, 2024 18:09:03 GMT
a well-established heavily-treed plot. Just go for a log burner like me and the heavily-treed plot will not be an issue for too long. Truth be I have run my log burner for 35 years , main source of space heating and only spent £100 ever on wood. In fact never cut down a living tree, just skip dived and collected fallen bits when dog walking. It's a way of life, a total obsession and I love it , the wife, um. The space taken up in the garden by the wood stack , 2 winters at 1963 conditions worth at present and counting is a negotiation that's ongoing at present  and becoming difficult. T
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adrianc
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Post by adrianc on Nov 17, 2024 18:25:01 GMT
Just go for a log burner like me Got two, and a very big pile of timber that I need to get round to sawing up and splitting... (Open to suggestions as to how I move the metre-plus diameter, 10m long ash trunk that's been sat half way down a steepish slope (no vehicular access, not even a little tractor) for the last couple of years... I clearly need a bigger chainsaw.)
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Post by mostlywrong on Nov 18, 2024 15:13:33 GMT
Just go for a log burner like me Got two, and a very big pile of timber that I need to get round to sawing up and splitting... (Open to suggestions as to how I move the metre-plus diameter, 10m long ash trunk that's been sat half way down a steepish slope (no vehicular access, not even a little tractor) for the last couple of years... I clearly need a bigger chainsaw.) Surely, one has to use the same approach as one might use when eating an elephant.
Start at one end and take little bites...
And masticate well.
MW
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ozboy
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Post by ozboy on Nov 18, 2024 19:30:43 GMT
Heat Pump? Don't.  |
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Post by mostlywrong on Nov 18, 2024 20:21:49 GMT
Heat Pump? Don't. Oh go on!
Do please tell...
MW
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Post by crabbyoldgit on Nov 19, 2024 4:20:05 GMT
Just go for a log burner like me Got two, and a very big pile of timber that I need to get round to sawing up and splitting... (Open to suggestions as to how I move the metre-plus diameter, 10m long ash trunk that's been sat half way down a steepish slope (no vehicular access, not even a little tractor) for the last couple of years... I clearly need a bigger chainsaw.) It's slow but , try driving in big stakes and hand turfer winch it up the slope. Had to get a big Simon platform into a liquid mud field and back once . Farmers tractor would not tow us , but he drove in the the anchor stakes and we winched laying down planks which sank as we went , took 2 days including clearing the fault on a comms mast, but we did it and it was kind of fun.
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Post by crabbyoldgit on Nov 19, 2024 4:45:58 GMT
Heat Pump? On Don't. I was/ am a big heat pump sceptic, however I recommend the heat geek videos on utube if you have a bit of a technical bent, the guy makes sense. What's most interesting is the success or failure of the system seems to be down to the internal design of the internal wet part of the system and controls such as weather compensation. The actual heat pump box on the wall is much less important. His thoughts on plumbers acting as heating engineers is let's say ,interesting. It would seem gas boiler systems have been sized and fitted on traditional eye ball calculations which have taken little notice of our better insulated homes, hence are commonly over sized and less efficient than they could be . It something you cannot get away with in a heat pump installation hence the horror stories. Having said all that keeping my log burner and combi boiler for as long as possible.
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adrianc
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Post by adrianc on Nov 19, 2024 8:54:45 GMT
Got two, and a very big pile of timber that I need to get round to sawing up and splitting... (Open to suggestions as to how I move the metre-plus diameter, 10m long ash trunk that's been sat half way down a steepish slope (no vehicular access, not even a little tractor) for the last couple of years... I clearly need a bigger chainsaw.) It's slow but , try driving in big stakes and hand turfer winch it up the slope. Had to get a big Simon platform into a liquid mud field and back once . Farmers tractor would not tow us , but he drove in the the anchor stakes and we winched laying down planks which sank as we went , took 2 days including clearing the fault on a comms mast, but we did it and it was kind of fun. Yeh, I'm thinking exactly that - slice along the middle to take it into two semi-circular halves, then I should be able to slice it and move it. It's out of sight, out of mind...
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and becoming difficult.
