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Description:
[China]
Air cooled chiller (heat pump) chilled water system If you are looking for an air conditioners for a large building you may well find that the traditional gas air conditioner runs into problems. When the gas has to travel long distances between valves and condensers the gas does not heat and cool properly. Therefore it is better to go for a chilled water air conditioner. The main benefit of using a chilled water air conditioner is the fact that the entire air conditioning unit is situated in one block, usually placed at the back or on top of the building. The chilled water air conditioner works by pumping water and cooling it down to a very low temperature. Once cooled the chilled water is pumped throughout the system. With a good chilled water air conditioning system there is no real limit to the size of the system, whereas an air conditioner using Freon gas is much more limited. Heat Pump Imagine that you took an air conditioner and flipped it around so that the hot coils were on the inside and the cold coils were on the outside. Then you would have a heater. It turns out that this heater works extremely well. Rather than burning a fuel, what it is doing is "moving heat." A heat pump is an air conditioner that contains a valve that lets it switch between "air conditioner" and "heater." When the valve is switched one way, the heat pump acts like an air conditioner, and when it is switched the other way it reverses the flow of the liquid inside the heat pump and acts like a heater. Heat pumps can be extremely efficient in their use of energy. But one problem with most heat pumps is that the coils in the outside air collect ice. The heat pump has to melt this ice periodically, so it switches itself back to air conditioner mode to heat up the coils. Once the ice is melted, the heat pump switches back to heating mode
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