Can solar energy used for room cooling (air conditioning) or can be night coolness stored to use at the day?
Question:
Answer:
the solar energy part of the question has alreay been dealt with.
there are other ways to cool a room just by design not using energy at all.
In Australia they put pipes in cold air flows (like down by the river)and direct these in to the house as simple as that.
Or if you make an opening at the bottom of the wall on the outside in the shady side.
the cold air can come in there,you can put wire mesh or a grid to stop animals (mice)from entering.
and you then have to have an opening at the highest part in the room in the wall( preferable on the oposite side of the hole in the borttom),to let the hot air escape ,
an aircurrent is the result which will cool the room down or if it is the whole house the escape hole should be in the highest part of the roof .
i have cooled a room down by hanging a wet curtain in front of the open window,the air coming truogh the curtain is much cooler.
you can make a fridge this way.by building a small room out of bricks,(in a windy place)and leaving spaces between the bricks.
you then drip water down the wall by putting a hose on top of the wall and with a small nail puncture some very small holes in it.
the best way is to use clinkers which are the coal left overs that come out of a big boiler.
these clinkers absorb water like a sponge and warm air passing over it looses its heat in the moisture.
you can make a fridge go as low as 4 degrees,which is good for cheese ,meat and eggs-
i cool beer down (if i havent got a fridge )by hanging them in a wet jute bag in the wind.
solar energy could be used to power air-conditiners by using a solar panel.
A parabolic mirror could also be used to heat a refrigerant and that can be used for cooling (same as a gas powered camping refrigerator).
Coolness can not be stored. There is no such thing as coolness, just lack of heat. Everything wants to loose its stored energy, the trick is to stop energy getting into the cool room, which requires very good insulation and not using hot lights or appliances
This is sort of a complicated question (for me anyway). Solar energy can be used to generate electricity, which in turn can run an air conditioner. One efficient method of air conditioning is to use ground water which is pumped to the surface and used as a heat exchange agent and then pumped back into the ground. Since ground water normally is about 55 degrees F., it has the capacity to absorb a great deal of heat.
I believe that there have been experiments using, if you will, a basement full of rocks, and during the day circulating the hot room air from the building over the rocks to cool it and then during the night circulating the cool night air over the rocks to cool them. There is a BIG problem with doing this. Condensation. When warm are passes over a cool surface, its ability to hold moisture drops and the moisture condenses.
The cheapest form of air conditioning is to plant a tree on the south side of the building. The leaves of the tree absorb the energy instead of the building.
More Questions & Answers...