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| EV-based road transportation is not viable |
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| themadhippy:
--- Quote --- Go and watch Guy Martin's Great British Power Trip” on Channel Four (UK) --- End quote --- And 1) spot the several technical errors 2) spot the propaganda being slipped in |
| eti:
--- Quote from: themadhippy on February 23, 2023, 02:07:47 am --- --- Quote --- Go and watch Guy Martin's Great British Power Trip” on Channel Four (UK) --- End quote --- And 1) spot the several technical errors 2) spot the propaganda being slipped in --- End quote --- By your own admission you’re mad. I’m out. 😁 |
| tszaboo:
--- Quote from: nctnico on February 22, 2023, 09:41:21 pm ---You keep missing the point here which has been explained by several people already. But I will repeat is once more so you may finally understand it: a heatpump can only work for a home that is well insulated. --- End quote --- And this is the part which is plain bullshit. It's something I keep hearing from the Dutch and there is just no evidence for it. There is especially large blowback, because they want to make it mandatory. --- Quote from: nctnico on February 22, 2023, 10:03:36 pm ---Financially not viable = cannot work. For all intends and purposes it comes down to the same: you'll need a different solution for the problem. There is no semantic discussion necessary on what can work 'in theory' but has no practical application. --- End quote --- Last time I checked, I could borrow up to 30K with 10 or 15 year green mortgage for energy saving renovations. This is a separate mortgage. Plus there were bunch of local incentives, tax rebate and other forms to do projects like this. You can do these changes with almost no money up front. |
| Miyuki:
--- Quote from: tom66 on February 22, 2023, 09:51:06 pm ---There is no reason a heatpump cannot work on a poorly insulated home. You can just put a bigger and bigger one in. Unfortunately, a 24kW boiler costs about £2,000 but a 24kW output power heatpump costs about £15,000. Not economical. So instead you sometimes see "engineers" try to fit the 12kW heatpump and people complain their home takes forever to heat up (or is too cold in winter.) A few things need to change for heatpumps to be more economical. The price needs to fall drastically. They are a motor, refrigeration system, controller. Shouldn't cost that much. And the installers need to get better. The scheme around F-Gas in this country is a bit bizarre and segmented and too few people do air con systems. --- End quote --- There are no name units for as low as €/£5,000 for 24kW air-water monoblock, and some use two, or even more compressors for bigger units, with simple old on-off regulations, so can run at half the rating to limit cycling. Yes, it probably uses a cheap ~500$ Chinese compressor which will not last many decades. But it can be easily serviced and replaced either with a cheap one or a better one, a reasonable brand compressor for a heat pump is about 1000€ And if the unit has no inverter there is little that can go wrong I agree those units have somewhat lower efficiency. The question is if ti makes economic sense. |
| nctnico:
--- Quote from: tszaboo on February 23, 2023, 09:26:14 am --- --- Quote from: nctnico on February 22, 2023, 09:41:21 pm ---You keep missing the point here which has been explained by several people already. But I will repeat is once more so you may finally understand it: a heatpump can only work for a home that is well insulated. --- End quote --- And this is the part which is plain bullshit. It's something I keep hearing from the Dutch and there is just no evidence for it. --- End quote --- You've missed the part about a relative of mine who did the math on this (using a detailed thermal model of a home; thermal modelling is his profession) and came to the same conclusion. |
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