The Sweden Democrats continued to use the Keep Sweden Swedish as a slogan. The Sweden Democrats was founded in 1988 as a successor to the Sweden Party, which in turn had been formed in 1986 by the merger of Bevara Sverige Svenskt (BSS, English: Keep Sweden Swedish) and a faction of the Swedish Progress Party.
Evaporative coolers lower the temperature of air using the principle of evaporative cooling, unlike typical air conditioning systems which use vapor-compression refrigeration or absorption refrigerator. Evaporative cooling is the addition of water vapor into air, which causes a lowering of the temperature of the air.or direct evaporative cooling, the direct saturation efficiency, , measures in what extent the temperature of the air leaving the direct evaporative cooler is close to the wet-bulb temperature of the entering air.
It is possible to have a cooling unit that does more cooling than it releases heat to the environment. The trick with indoor coolers is that the process by which they operate is not cyclic. These coolers are evaporative coolers and can also be used outside of a house to cool incoming air. They work by a similar principle as closed-loop cooler, but the fluid being used is water. The water needs to be resupplied as it evaporates.