Water-cooled chiller
Water-cooled chiller, it uses the shell and tube evaporator makes the water and refrigerant heat exchange, refrigerant absorbs the heat load in the water, so that the water cools down to produce cold water, through the role of the compressor will bring the heat to the shell and tube condenser, by the refrigerant and the water heat exchange, so that the water absorbs the heat, through the water pipe will be taken out of the external cooling tower dissipation of the heat (water cooling), to complete a whole operation.
Air-cooled chiller
Air-cooled chillers actively absorb heat from the process water; the unit then transfers this heat to the air surrounding the cooling unit. This type of unit is typically used in ventilated outdoor areas. For example, the extra heat can be used to heat the space in the winter, saving money compared to conventional heating systems, although the heating capacity is of course more limited, typically up to around 35°C.
how to choose the chiller unit?
We can analyze which type of chiller is suitable for the site conditions.
If the site has a cooling water tower or cooling water source for chiller circulation, and can be connected to the pipeline, then give priority to water-cooled chiller. Water-cooled chillers are not only cheaper than air-cooled chillers of the same size, but also benefit from their own heat generation is small, so the cooling effect is better than air-cooled chillers of the same size.
Air-cooled chiller and water-cooled chiller than a big advantage is not to connect the external circulating water, then the use of the site, including the layout will be more flexible and convenient, there is no cooling water in the field or is not convenient to connect to the water is more appropriate. However, it should be noted that, because the air-cooled chiller will run with the air for heat transfer, that is, it will produce a lot of heat, so it is not very suitable for use in a very closed environment, which can easily cause the ambient temperature is too high, the compressor high temperature alarm. In addition for the environmental noise is very concerned about the customer, due to the presence of the fan especially high-power machines, so the environmental noise are not small.
Translated with www.DeepL.com/Translator (free version)