01-18-2022, 06:59 PM
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#361 (permalink)
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home of the odd vehicles
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Quote:
Originally Posted by redpoint5
I've asked several times what % cost increase it is to have a heat pump instead of AC only. It doesn't seem like it would be more than like 10% as far as I can figure.
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Commercial Heat pumps cost 2-4x more than plain AC because “ reasons “
Might be still a fragmented niche category because things for houses can be a ripoff sold in small volumes
If everything was always a heat pump might get to that 10% point but as I stated almost everything is much larger for a given power heat pump , even pressure ratings seem to be higher
Which is why I ask, what do I loose if I do none of that?
AKA Folks insocal running the heat at 60f don’t need a very powerful heat pump.
How wimpy is it ? Never have gotten an answer to that if we literally just run AC components in reverse with proper valving
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01-18-2022, 08:02 PM
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#362 (permalink)
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Master EcoModder
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Tesla shares it's patents. Maybe that includes the Octovalve?
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01-19-2022, 11:16 AM
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#363 (permalink)
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Somewhat crazed
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The quotes I got last year for electric HVAC on my 80 year old house were about double the heat only quotes. The mitsu high pressure system good to -14f was another 20% premium on top of that. 25% of the heat quotes costs were for ripping out the existing manifolds and putting in new insulated ceiling vents instead of current floor venting but not fixing the holes in the floor. We didn't do that but ended up superinsulating the existing ducting ourselves for about $100 and 8 hours labor
Just replacing the oil fired heat only system cost about the same as an electric heat only system so no major differences there.
Diy parts only were 1/4 the price of the install, using the same name brand system parts but I was unsure of my brazing skills. Turns out the fricking systems use compression fittings so I would have had to only buy a quality vacuum pump, pressure differential manifold gauges and a spool of insulated tubing. System was prefilled with freon no freon was added.
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Last edited by Piotrsko; 01-19-2022 at 11:57 AM..
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01-22-2022, 02:47 PM
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#364 (permalink)
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Thalmaturge
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Interesting detail shot of the prototype skin cooling radiator setup.
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The Following 2 Users Say Thank You to samwichse For This Useful Post:
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02-04-2022, 02:36 PM
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#365 (permalink)
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Master EcoWalker
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Two-bit da Vinci did a piece on the Aptera:
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For confirmation go to people just like you.
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02-17-2022, 03:28 PM
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#366 (permalink)
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EcoModding Lurker
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Quote:
Originally Posted by samwichse
Interesting detail shot of the prototype skin cooling radiator setup.
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Whoa, where did you get that picture of the prototype skin cooling?
Last edited by hyperEV; 02-17-2022 at 04:29 PM..
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02-17-2022, 04:28 PM
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#367 (permalink)
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EcoModding Lurker
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Aptera did a moose test like someone was talking about.
I'm new so I'm not allowed to put in links but if you search youtube for aptera moose test, you'll see it.
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02-17-2022, 04:34 PM
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#368 (permalink)
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Master EcoModder
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__________________
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.Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster
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.Three conspiracy theorists walk into a bar --You can't say that is a coincidence.
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The Following User Says Thank You to freebeard For This Useful Post:
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02-17-2022, 04:48 PM
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#369 (permalink)
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High Altitude Hybrid
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As someone who has to stop for moose (Alces alces), american elk (Cervus canadensis) and the still very large mule dear (Odocoileus hemionus) that jump out of nowhere anywhere you drive I appreciate being able to steer quickly and brake quickly.
Sadly, the vehicles that are becoming more stable from having a low center of gravity, that is to say your typical EV, have terrible braking distances due to their increased mass. The Tesla Model 3 has a stopping distance that's longer than a Ford F150's.
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02-17-2022, 04:48 PM
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#370 (permalink)
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EcoModding Lurker
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Quote:
Originally Posted by freebeard
More Thanks than Posts? Allow me to help:
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evidently I have to have 15 posts before I can use links. it's the video that's from 10 days ago in the search results.
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