The difference between air cooled chiller and water cooled chiller

The question that may come to most people's minds when choosing and buying a chiller is, is an air-cooled chiller more suitable for my conditions or a water-cooled chiller? To know the answer to this question, please read the mentioned materials until the end of the article.
A common misconception about chillers is that some people think that air-cooled chillers cool air and water-cooled chillers provide chilled water. If the output of all chiller models is cold water. The heat taken from the return water of air-generating devices such as fan coils is transferred to the outside (atmosphere) in two ways in chillers. In air-cooled chillers through the airflow, and in water-cooled chillers through the water flow that flows in their condenser. In this article, we are going to discuss the difference between an air-cooled chiller and a water-cooled chiller. So stay with us.
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Comparison of air-cooled and water-cooled chillers

To better compare the major differences between air-cooled chillers and water-cooled chillers, in the rest of the article, we will give a full description of each in terms of performance, installation, maintenance, and cost:

Comparison of air-cooled and water-cooled chillers in terms of performance

One of the main differences between air-cooled and water-cooled chillers is their condenser type, which is divided into two types: an air-cooled condenser and a water-cooled condenser. An air-cooled chiller uses an air-cooled condenser that needs to be placed in an open space such as a roof or yard. Condensers of air-conditioned chillers are made of two common types (copper-aluminium) or microchannel condenser type (all aluminium). Cool air chiller cools the refrigerant by passing the air over the condenser fins and as a result, it condenses.
This is while the cool water chiller is placed in the engine room. The condenser of this chiller reduces the temperature of the refrigerant in the condenser chiller by placing water next to the refrigerant. After taking the heat of the refrigerant, the water is directed to the cooling tower to be cooled again and returned to the condenser of the chilled water chiller.

Comparison of air-cooled and water-cooled chillers in terms of cost

Although the initial purchase price of water chillers in the same capacity is much lower than air chillers, as we know, water-cooled chillers need a cooling tower and circulator pump to work, which includes additional costs, but air-cooled chillers do not need the corresponding tower and pump.

Installation

Among the parameters that must be observed during the installation and operation of chillers, the following can be mentioned.

Installation location

The air conditioner requires open spaces, so the heat output from it is discharged in the open space. If warm air remains around the chiller, performance will gradually decrease. On the other hand, the chilled water chiller is installed in the engine room and does not need ventilation, because the heat of the condenser water is discharged into the cooling tower.

Dimensions and size

The size of the air-cooled chiller condenser is large because the aluminium fins and fans require a larger heat transfer surface for airflow. While the water-cooled condenser can handle the same heat transfer task in a much smaller size. The size of the condenser determines that the air-cooled chiller dimensions are larger than the water-cooled chiller.

Piping and connection

To install an air-cooled chiller, it is only necessary to pipe the chiller, but in the case of a water-cooled chiller, two other steps must be done, i.e. installing the cooling tower and connecting the condenser of the chiller to the cooling tower.

Comparison of air-cooled and water-cooled chillers in terms of maintenance

The performance of the chiller will decrease without proper maintenance, so cleaning the condenser is of particular importance, and if the heat transfer surface of the condenser is dirty, the performance of the chiller will decrease greatly. In an air-cooled chiller, the dust on the condenser is visible, so you can easily tell when it's time to clean it. Cleaning the air conditioner condenser is very simple, you need to clean it annually with water and suitable detergents. But in the case of water-cooled chillers, you simply cannot see if there is a problem with the condenser. Cleaning the cold water condenser requires professional acid washing and is not very convenient.

In what projects are cold water chillers used?

If the considered project is not located in a humid climate, the access to water sources is not limited, and also the sound resulting from the operation of the device is considered as one of the parameters for choosing the type of chiller, the water-cooled chiller can provide suitable performance. Especially, firstly, the heat transfer efficiency in water chillers is higher than air chillers (they have higher COP) and secondly, they have a lower price than air chillers in the same capacities.

In what projects are air-cooled chillers used?

Maintenance and maintenance of air-cooled chillers are easier than water-cooled chillers due to the lack of equipment such as cooling towers, cooling tower pumps, and piping between these equipment. Air-cooled chillers can be used in all climates with different climates, from wet and humid to dry and desert environments. Mini chillers are also types of air-cooled chillers.

conclusion

In this article, we briefly examined the differences between water-cooled and air-cooled chillers. Both types of coolants have their advantages. Choosing between these two types of coolers is not an easy process, but given your circumstances, you can make the best choice. However, by making use of the proper support and advice from Damatajhiz experts, you can buy the best equipment.
You can also read the article THE DIFFERENCE BETWEEN ABSORPTION AND COMPRESSION CHILLERS for more information.

Final speech

The specialized collection (Damatajhiz) (the first and most reliable authority in the country in the field of building facilities equipment and all air conditioning devices), offers you all kinds of sand filters and hundreds of other products, guaranteeing the originality of the product, valid warranty, and reasonable price. In addition, if you have any questions about choosing and comparing the brands of this product, you can get free advice from the heating equipment experts.

In Iran, the first and most famous specialized group in the field of building installation equipment, air conditioners, and all equipment for swimming pools, saunas, and jacuzzis since 2004, DamaTajhiz is a specialized group. Refer to the time of this group. For more information, you can get advice from the experts of DamaTajhiz Engineering and Production Company by calling +98 21 88822550.

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