You Are Now Less Dumb -
How to Conquer Mob Mentality, How to Buy Happiness, and All the Other Ways to Outsmart Yourself
quote [ The world spends about 15% of its energy on heat. Most of that comes from burning fossil fuels in homes and businesses. A solution to the problem is the heat pump, powered by electricity, A heat pump is a refrigerator, but in reverse. Physics dictates that when gases are compressed, they release heat. The heat from the condenser is directed into the house and the evaporator absorbs heat from the outside. It produces three units of heat for every unit of electricity consumed. (Electric heaters can, at best, produce one unit of heat for every unit of electricity.) The use of these devices has helped the EU cut its carbon emissions by 30 million metric tons annually (about 1% of the total), ]
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cb361 said @ 6:18pm GMT on 22nd July
Correct me if I'm wrong, but surely these devices would be most efficient when it's very hot outside the house, and less efficient (or even ineffective) when it's cold outside, which is undesirable way around. The heatsink (coldsink?) outside can only gather heat if it the uncompressed gases make it colder than the ambient temperature.
cb361 said @ 6:19pm GMT on 22nd July
Correct me if I'm wrong, but surely these devices would be most efficient when it's very hot outside the house, and less efficient (or even ineffective) when it's cold outside, which is undesirable way around. The heatsink (coldsink?) outside can only gather heat if it the uncompressed gases make it colder than the ambient temperature, which becomes harder as the temperature drops.
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cb361 said @ 6:18pm GMT on 22nd July
Correct me if I'm wrong, but surely these devices would be most efficient when it's very hot outside the house, and less efficient (or even ineffective) when it's cold outside, which is undesirable way around. The heatsink (coldsink?) outside can only gather heat if it the uncompressed gases make it colder than the ambient temperature, which becomes harder as the temperature drops.