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Heat pumps are not efficient at all for large temperature deltas. Electric is general bad for heating (efficiency wise) unless we literally manage to generate t
by axelthegerman 4y ago
Heat pumps are not efficient at all for large temperature deltas. Electric is general bad for heating (efficiency wise) unless we literally manage to generate tons of it for very cheap (e.g. fusion).
- tialaramex 4y agoBig chunks of Europe don't get cold enough for the delta to be unacceptable. A 20K delta (so e.g. you want it to be 20° C inside, but the outside air temperature is 0° C) is still well inside the range where the heat pump has > 100% efficiency. When it's really cold, which even in Northern Europe is only a few days per year, air source heat pumps would be < 100% efficient and you'd step to resistive heating, but it's weird to optimise for a worst case scenario. And ground source heat pumps are a thing, unlike the air the ground has a relatively stable temperature we can leverage to stabilise home temperatures.
- midoridensha 4y agoGround-source heat pumps fix that problem I believe. Of course, drilling a hole is extra work and expense. For multi-unit housing, it should be a lot more economical since you could drill one hole for coolant circulation and share that among all the units.
- deleted 4y ago[deleted]