Air Cooled Chillers Unit information

In this article we will be looking at how air cooled chillers work. Air cooled chillers are very common, especially in small to medium size commercial and office type buildings. They are usually located externally, either up on the roof or at ground level. This is because Air Cooled Chillers do not use cooling towers, instead they dump their heat into the ambient air and therefore need access to a lot of fresh air, in order to reject the unwanted heat from the building. 

The chillers will produce “chilled water” which is pumped out around the building to the Air Handling Units (AHU’s) and Fan Coil Units (FCU’s) Which remove the unwanted heat from the building and transfer it into the chilled water loop. The chilled water will enter the AHU’s/FCU’s at around 6°C (42.8°F) and by the time it leaves the heat exchanger within the AHU/FCU it will have risen to around 12°C (53.6°F) and will then make its way back to the Air Cooled Chiller to dump this heat into the atmosphere before repeating the cycle.

The warm return “chilled water” only enters the evaporator where it passes along the outside surface area of the inner tubes, which contain the refrigerant, it then exits at the opposite end having given up its thermal energy. The refrigerant is the only fluid which moves around each of the components of the chiller. It changes its pressure, temperature, enthalpy and entroy as it moves around the machine and transports the unwanted heat away from the evaporator chilled water.

Scroll to the LINK to watch the related video on this subject. about Ningbo Beilun Rhong Machinery Manufacturing Co. Ltd RCMC-60A screw typ air chiller(central chiller,central and screw type  chiller)  Air-cooled Chiller