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Everything posted by jack
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Beat me to it! My small ASHP needed 300 mm or maybe even 350 mm space behind it.
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I don't know what this is supposed to mean. If it's a dig at Craig, look back through his recent posts - lots of helpful content, no mention of his company. Incidentally, you're one of the "there are others" I was trying to think of when I wrote my reply.
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Welcome, and thanks for being upfront about this. Several members manage to successfully walk the line between commercial presence and unacceptable business promotion. @craig comes to mind, but there are others.
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I'll check tonight and get back to you.
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How odd. My missus was exactly the same. I had firm opinions on nearly every detail of the house (admittedly mainly what I didn't want rather than what I wanted!), but aesthetically I couldn't have cared less whether there was a bar there or not. The screen does wobble a bit if you catch it on the way out of the shower. Not ideal, but none of the three shower screens set up like this has broken yet.
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I think you're being too hard on yourself. Sounds like the seller lied about stuff being in stock, then provided utterly shite service, then effectively tried to steal your money when you cancelled. Glad you got the money back.
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Insulhub Isotex Voluntary Liquidation
jack replied to Surfiejim's topic in Insulated Concrete Formwork (ICF)
Hi Jake. I'm not sure whether this thread is monitored much by the people who've posted in it. Best thing you can do is to send a private message to one of the people who mentioned the Facebook and WhatsApp groups earlier in the thread and ask them how to join. If you're on a PC, you can just hover over their icon and a popup will give you the option to send a message. Alternatively, click on their icon and the option will be on the next page. Good luck. -
Makes sense a longer job price would be lower than a one-off day, but are plumbers really still £30 a day less than painters?
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MVHR for 335 m2 house
jack replied to GK22's topic in Mechanical Ventilation with Heat Recovery (MVHR)
Seems very expensive to me. Nearly three grand just for first fix ductwork labour? Without any previous experience, I installed all of my ducting (£289 m2 house) over an easy couple of days with occasional help from my wife. Even at £300 a day (which is a lot given it's a low-skill job), what are they doing for 10 human-days? And what "second fix" works? Surely that's just fitting inlets and outlets? Again, how much time could that realistically take? -
No way I can get a plumber onsite for a day for £210 around my way. Are they really only £30 a day more than a painter?
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Can't help you with the on-tape stuff, but I don't suppose the PWM rate of the driver is adjustable via the Eldoled programming interface?
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MVHR design help / feedback
jack replied to Ola's topic in Mechanical Ventilation with Heat Recovery (MVHR)
Admittedly I don't have any heating upstairs, but this is very much not my experience in winter. It's always 2-3 degrees cooler upstairs than down in winter. We're just at the time of year where that changes. In summer it's a lot warmer upstairs, and maybe a central extract upstairs would help when the MVHR is in summer bypass mode.- 18 replies
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- extract / ssupply points placement
- cascade effect
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I'm very late to this but we have an insulated concrete raft: up to 300 mm EPS, ~100 mm concrete slab, then ~70 mm polished concrete screed (no insulation between structural slab and screed). I work from home and almost never wear shoes inside, so I spend a lot of time walking around on it in socks. Yes, it feels hard underfoot, but to be honest I don't notice it. As for temperatures, I had dinner at a friend's place mid-winter many years ago. It was a refurb with building regs insulation levels throughout. Top level was engineered oak flooring. I don't know what flow temperature they were using, but I found it extremely uncomfortable underfoot. My feet were sweating and I found it extremely distracting. TBF, my wife didn't notice the temperature. Our floor temp slowly wobbles around 19.5-21.5 degrees during winter, based on a 25-28 degree (weather conpensation dependent) flow temp. It doesn't feel warm underfoot, but it's perfectly comfortable to walk around in socks.
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What would you do differently if you could do your PV install fresh?
jack replied to Gill's topic in Photovoltaics (PV)
1. I was responding to you about EVs in general, not Teslas, since that's what you were referring to: 2. Assuming the 1% number mentioned by Tesla is reasonable for other manufacturers, my battery should lose up to 0.38 kWh per 24 hours. That's less than 2 miles, which is exactly in line with my comment: 3. The numbers given by Tesla in the link you provided suggest a 3 kWh/day standing consumption is far too high. Assuming a 54 kWh battery (which is what Jeremy's would have been, I think), 1% is 0.54 kWh, which is about a sixth of 3 kWh. In summary, parasitic losses are a thing, but are nothing like the thing you implied. -
What would you do differently if you could do your PV install fresh?
jack replied to Gill's topic in Photovoltaics (PV)
I've never measured it, but 3 kWh would be over 12 miles at our usual consumption rate and it definitely doesn't lose anything like that when it's sat in the driveway. -
My recollection is that the neighbour consultation date is nominal, and that they still have to take into account any (relevant!) objections received in time for consideration before a decision is made. Of possible interest is the question of bringing the application into committee. Our rules say an application is brought into committee if it receives a certain number (5, I think) objections. It may be that the consultation deadline is a factor in whether the number of objections triggers a committee review. Makes sense that would be the case.
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Global warming is in fact entirely natural and has already peaked
jack replied to ProDave's topic in Boffin's Corner
Fears were rising a few months ago about the elevated sea temperatures this year's anticipated El Niño might bring. Interesting/worrying how extreme it's looking already. -
There's an old book about designing homes called "A Pattern Language". A lot of it tends to the esoteric and it can be a bit new-age airy-fairy at times, but there're also some useful (and often research-based) observations. One of those is that balconies less than a certain depth (about 6", from memory) will rarely if ever be used. Edited to add: I found this: One more link: https://archive.curbed.com/2019/7/11/20686495/pattern-language-christopher-alexander
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100% this. Stop wasting time and emotional energy negotiating with people who aren't negotiating in good faith. Tell them politely but firmly what you're going to do, provide copies of the documents supporting your right to do it, and then crack on.
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We have balconies at the back of our house - a full width one outside our bedroom and another outside one of the kids' bedrooms. When I say they are never used, I mean no-one has ever once set foot on them for any reason other than to sweep them. They introduced significant cold bridges we didn't notice until it was too late, and they absorbed a lot of money for something that isn't ever used. There are cases where brise soleil make sense. We really ought to have one above our south-facing slider, for example, as that would cut a huge proportion of the solar gain we get through the summer months. I think for south facing windows, they can do a good job of cutting a lot of the direct sunlight through the middle of summer days. We actually have some of the windows on the south side set back in the the cladding by ~400 mm, and that's actually enought to cut out nearly all of the sun in the middle of the day in summer (the windows are only about 500 mm high, to be fair). But for other windows, especially east and west facing, I think external blinds work a lot better. We have them on west-facing windows and it's quite extraordinary how well they work to keep heat out. No cantilevered brise soleil could have achieved the level of heat-exclusion achieved by the external blinds. You can also have the blinds stay down only when needed - so we don't lower the east-facing blinds at the rear of the house at all in winter. In summer, they come down when it gets dark, feather slightly open at 7 in the morning (so you get light and can see out, but no direct sun), then retract completely in the afternoon.
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Get into GPT. Apparently this is exactly the sort of problem it's ideal for solving.
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Global warming is in fact entirely natural and has already peaked
jack replied to ProDave's topic in Boffin's Corner
I hope he's right, but I doubt he is: https://skepticalscience.com/flaws_of_ludecke_and_weiss.html -
Ignore the fact that the Willis heater is external - the two situations are almost exactly the same (albeit there might be slightly more stratification in the Willis heater example due to how/where it introduces the heated water to the tank - an internal immersion is more likely to cause some turbulence/mixing). In both cases, buoyancy causes hot water to rise and displace cold water downwards, and also in both cases, the distance that the cold water will be pushed down is limited by the vertical position of the heater.
