this post was submitted on 21 Oct 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.

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

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Heat pumps were supposed to transform the world. But it’s not going as planned. | Heat pump sales, critical to the transition to clean energy, have slowed in the U.S. and stalled in Europe. (wapo.st)
submitted 1 month ago by silence7 to c/climate
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[–] Hello_there@fedia.io 7 points 1 month ago (1 children)

My gas heater still has at least 10 years of life in it. I don't think there's a market for used central heat systems. And I'd need a panel upgrade.
Those are pretty big roadblocks.

[–] Montagge@lemmy.zip 3 points 1 month ago (1 children)

You might be able to use the breaker that the gas furnace fan is using!

[–] skuzz@discuss.tchncs.de 2 points 1 month ago* (last edited 1 month ago) (2 children)

The compressors on full house-scale non-split heat pumps are same power draw as AC units, which is many amps more than the peanuts a furnace fan uses, but if OP has an AC unit, the heat pump also replaces it.

I get the complexity though. If I want to upgrade my home to have service for charging electric cars, and all electric heat/cool, the amperage draw is high enough that it would require an upgrade from "consumer"-level to "business"-level power input.

[–] silence7 3 points 1 month ago

If you've got 100 amp service, as is typical for US homes, it's in theory possible to do things like set up your EV charger to pause when the dryer or oven is running, and end up without the need for a new breaker box.

[–] Montagge@lemmy.zip 2 points 1 month ago

I would think a full house forced air furnace would have a 60ish amp breaker which can run a herfy heat pump. I could be wrong though.