4 ms·
Modern air pumps work with good efficiency even down to around -15c which is a rare temperature for post global warming world.
by serpix 7y ago
Modern air pumps work with good efficiency even down to around -15c which is a rare temperature for post global warming world.
- dusted 7y agoExcept some places in Russia it's still common to go below -20, and in a post-global warming world, these areas will likely experience a new ice-age. Electricity is the best bet, as gas can freeze too, while copper just becomes able to carry higher loads.
- ben_w 7y agoWhat’s the total population of <-20C areas, worldwide? And why should anyone outside that area care if the equipment they use will or won’t work in weather that they won’t experience?
- dusted 7y agoIt's not relevant what the total population is. Even if it's 1, you can't tell that person to use a heat-pump.
- ben_w 7y agoSo one person uses a different heat source. So what? Why is that important? Nobody else has to just because they do.
- imtringued 7y agoIf the total population is low then you can tell them to _not_ use a heat pump.
- baybal2 7y ago> gas can freeze too Man, please look up methane freezing point
- krzyk 7y agoAren't air pumps less power efficient then ground ones? Also, is it possible for air pump to heat a liquid in pipes? I mean can I have air pump that provides heating to the floor? If the floor is warm then body thinks it is warm. I know air pumps only as air conditioners and they just blew warm air around, which is not that comfortable if you are just where the warm wind blows :)
- matthiasl 7y agoOne way to classify heat pumps is by the source and destination of the heat. - air/air - air/water (i.e. an "air pump that heats a liquid in pipes") - ground/water are all commercially available, at widely varying prices: https://www.nibe.eu/en-eu/products/heat-pumps https://www.nibe.eu/en-eu/products/heat-pumps The efficiency depends on the pump, the house and the weather. At +10 (Celsius) ambient temperature, the air source pumps will generally come out ahead, at -20 the ground-source pump is going to win.
- goodcanadian 7y agoAren't air pumps less power efficient then ground ones? Only when the air temperature is less than the ground temperature. On average, yes, air source is slightly less efficient than ground source, but the initial cost of ground source is so much higher that you will not make up the difference in the lifetime of the pump. Air source is fine. Also, is it possible for air pump to heat a liquid in pipes? Yes. I mean can I have air pump that provides heating to the floor? Yes. This is generally considered the best way to do it as the water does not need to be as hot as with conventional radiators, so it is somewhat more efficient. However, conventional low temperature radiators work fine, too. I know air pumps only as air conditioners and they just blew warm air around, which is not that comfortable if you are just where the warm wind blows :) To each their own. I grew up with forced air heating and prefer it to radiated heat.
- nelgaard 7y agoYes, and that was Canadian houses, I assume, with dozens of vents in the floor on every level of the house. In Europe we mostly see air-to-air heat pumps in cottages, and there is then only one vent for the entire house. Which if fine and efficient for a small cottage in the fall and spring and maybe a few weekends in the winter. But it would be hopeless in a Canadian winter.
- rini17 7y agoNope it does not work like that. The temperature extremes are increasing too, so the number of -15°C days decreases only slightly. For example, despite last year was on average warmest on record, my tomatoes still suffered from sudden frost in May and then again in October.
- akvadrako 7y agoActually most of the warming is due to milder winters and at more extreme latitudes. So even if variation increased, it could still result in fewer very cold days.