this post was submitted on 03 Jul 2024
165 points (97.1% liked)

Climate - truthful information about climate, related activism and politics.

5246 readers
361 users here now

Discussion of climate, how it is changing, activism around that, the politics, and the energy systems change we need in order to stabilize things.

As a starting point, the burning of fossil fuels, and to a lesser extent deforestation and release of methane are responsible for the warming in recent decades: Graph of temperature as observed with significant warming, and simulated without added greenhouse gases and other anthropogentic changes, which shows no significant warming

How much each change to the atmosphere has warmed the world: IPCC AR6 Figure 2 - Thee bar charts: first chart: how much each gas has warmed the world. About 1C of total warming. Second chart: about 1.5C of total warming from well-mixed greenhouse gases, offset by 0.4C of cooling from aerosols and negligible influence from changes to solar output, volcanoes, and internal variability. Third chart: about 1.25C of warming from CO2, 0.5C from methane, and a bunch more in small quantities from other gases. About 0.5C of cooling with large error bars from SO2.

Recommended actions to cut greenhouse gas emissions in the near future:

Anti-science, inactivism, and unsupported conspiracy theories are not ok here.

founded 1 year ago
MODERATORS
silence7@slrpnk.net
165
The hunt for the most efficient heat pump in the world (arstechnica.com)
submitted 4 months ago by Oestradiolo@lemmy.blahaj.zone to c/climate@slrpnk.net
40 comments fedilink hide all child comments
 

A new generation of engineers has realized they can push heat pumps to the limit.

you are viewing a single comment's thread
view the rest of the comments
[–] sping@lemmy.sdf.org 2 points 4 months ago (2 children)

Where? My $300 U shaped window AC is modern quiet, tidy and efficient, but I was reading about window heat pumps being $2-3k.

[–] LinusSexTips@lemmy.world 3 points 4 months ago

My wall mounted split systems were <$1000 AUD each, 3.5kw. Found a sparkie and a fridgie to do the install, set us back around $3000 for two systems installed.

Great units, added some wifi dongles and tied them into my home-assistant for remote / out of home control & scheduling.

Probably the best addition to our home currently, don't know how we lived here using pedestal fans and gas heating.

[–] MNByChoice@midwest.social 1 points 4 months ago (1 children)

Search Amazon for "window heat pump".

I cannot comment on quality or efficiency.

[–] sping@lemmy.sdf.org 1 points 4 months ago* (last edited 4 months ago) (1 children)

Well all conventional air conditioners are strictly heat pumps, but when we say heat pump everyone usually means bi-directional heat pumps - ones that can provide heating as well as cooling. My Amazon results are not that and I was recently reading about them coming to market starting at $2k.