what is water cooled and air cooled ac system give the full detail?

Answer 1

I believe a water cooling system is mainly used for large apartment complexes, office buildings etc. The air flows over a large water reservoir which cools the surrounding air before it is blown into the units, however they are antiquated. You generally have leaks associated with cooling systems, especially inside the apartments.The a/c system is a separate unit that cools the air with freon. These are self contained units and do not need water to cool the surrounding air.

Answer 2

Air conditioning systems receive heat from an area through an evaporator and reject it somewhere else through a condenser. Whether it is air-cooled or water-cooled depends on which media removes the heat from the condenser, air or water.

The important thing is that the heat must be rejected apart from the space being cooled. Which cooling medium to use depends on the size and location of the space(s), location of the AC unit, access to the sources of the cooling medium, initial expense and operating costs, reliability.

AC unit compressors will operate more efficiently with water-cooled condensers, however the cost of sypplying and disposing of the water must be considered.

There are two basic types of air conditioner : self-contained and split-system. Either can have air- cooled condensers or water- cooled condensers depending on the application. Here are a few examples.

Window units are self-contained and are arranged so the evaporator (and room air circulating fan) is in the room and the air-cooled condenser (and its fan) is outside.

There are some self-contained air-cooled AC units that are portable, that is they have wheels and a long extension chord. These may be used for spot cooling, but the net effect will be to increase the total heat in the space. We have used these in large industrial buildings to spot cool where mechanics must work. You may see similar units on the sidelines of football games. These may be used to spot cool a room, but the condenser heat which includes the energy of the compressor will be sent into the rest of the room or the house.

Room air-cooled room dehumidifiers are specially designed to condense moisture out of the room air, not to blow out cool air. They will dry out a room, but the room temperature will rise.

Some larger self-contained units, like for house trailers are mounted completely outside. The house air is ducted to and from the evaporator in the unit. The condenser is most commonly air -cooled , but it could be water cooled.
Some larger self-contained units installed entirely within the room , like for some computer rooms, have water cooled condensers. Some water cooled units also have been used for residential cooling using well water in the condenser and also using recirculating water going through an evaporative cooler outside and then back to the condenser. Sometimes for large commercial and industrial AC and chilled water refrigeration installations the evaporative cooler is called a cooling tower. Sometimes large ponds are used for the cooling water supply to the condensor.

Split system units have the evaporator and cold air circulating fan combined in a unit within the space. Cool air is either discharged directly into the room or distributed through ducting.
The condensing unit (with the compressor) is outside. Liquid and vapor refrigetant tubing connect the two units. Again, the condenser may be designed for air cooling (most common) or water cooling.

Well water is employed in large heat pump installations, like for schools because the water is cooler in the summer than the hot outside air, but more importantly the water is comparatively warmer in the winter and heat is drawn from it more efficiently than from the winter air. The water source drastically reduces the need for expensive direct heating from the electric utility.

Answer 3

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