this post was submitted on 03 Jul 2024
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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.

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The hunt for the most efficient heat pump in the world (arstechnica.com)
submitted 5 months ago by [email protected] to c/[email protected]
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A new generation of engineers has realized they can push heat pumps to the limit.

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[–] doingthestuff 6 points 5 months ago (7 children)

You can get window unit ac for under $200.

[–] [email protected] 5 points 5 months ago* (last edited 5 months ago) (6 children)

For under $500 one can get a window heat pump. (They are likely as shit as the $200 window A/C.)

[–] [email protected] 2 points 5 months ago (4 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 3 points 5 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.

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