Heat pumps of the 1800s are becoming the technology of the future

Post by 2sk21 » Tue, Jan 17, 2023, 10:22 AM UTC

dublinben wrote: post #138

throw0101a wrote: post #118

Earlier quoted context omitted.

> Ducts are dead. Ducts are still needed to circulate air, especially if you want to remove stale air (e.g., bathrooms, kitchen) and bring in (filtered) fresh air (to bedrooms).

They're obviously no replacement for exhaust fans in bathrooms and kitchens, but there's a number of ductless energy recovery ventilators that can give you fresh air in your bedroom(s). https://www.buildwithrise.com/stories/ductless-heat-recovery

Post by sebzim4500 » Tue, Jan 17, 2023, 10:48 AM UTC

n1b0m wrote: post #412

phyzome wrote: post #144

> owners of drafty homes may need to take on the added cost of insulation when installing a heat pump Installing good insulation is also really important even if you're not using heat pumps! With bad insulation, you're wasting energy no matter what technology you're using.

Recent research in England and Wales shows that conservatories, extensions and changing behaviour cancelled out any savings [1] [1] https://amp.theguardian.com/environment/2023/jan/01/rebound-...

Post by jansan » Tue, Jan 17, 2023, 11:04 AM UTC

jahewson wrote: post #189

kccqzy wrote: post #132

Earlier quoted context omitted.

Not being snarky but why don't you just open the window for that? I have a CO2 detector that I believe is a reasonable proxy for stale air. When it goes above 1000 I simply open the windows. By the time I remember to close the windows the reading is almost always below 500.

I used to have a bathroom without an extractor and in the winter with the window open the cold air would just cool the walls and cause more condensation there than I’d get with it closed.

Post by xpe » Tue, Jan 17, 2023, 11:15 AM UTC

Scoundreller wrote: post #95

ComputerGuru wrote: post #51

Earlier quoted context omitted.

I've built/retrofitted and a prototype of mechanically operated louvres with push/pull fans for air exchange in an old school building, tied to the thermostat, ac, and a CO2 detector. The idea of doing the same in my home has been taunting me for years now. Ideally you'd have two such louvres, one with a push fan in the upper floor and the other with a pull fan in the lower floor to simultaneously eject unwanted heat…

I was thinking a big vertical heat pipe that sticks out like a chimney would be great for this and keep inside+outside sealed. When it’s colder outside, liquid will evaporate on the bottom and condense at the top through gravity. Once it’s warmer outside, the whole process just stops. No valves, no pumps, no analog or digital controls. Ok, maybe a fan. I actually want a fridge/freezer at the cabin that works like thi…

Post by Thlom » Tue, Jan 17, 2023, 11:23 AM UTC

kccqzy wrote: post #204

mvnuweucxqokii wrote: post #163

Earlier quoted context omitted.

Not to be snarky, but if the weather outdoors is uncomfortable enough to be using climate control, why would I want to open the window?

Because presumably in this case you would want to open a window for fresh air, and simultaneously run your heating system to heat up that fresh air? I was responding to a comment that presupposes the need for fresh air. If you don't need that, feel free to close the windows then.