Buy a cool air chiller or cold water?

One of the important issues of production centers and companies that intend to buy a chiller is choosing between buying air-cooled chiller or cold water. When buying a chiller, you should consider the size of the system installation location, energy consumption, the presence of personnel to maintain it, the amount of cooling required, and whether both heating and cooling in the space is desired.

In air-cooled chiller systems in condensing units, the temperature of the high-temperature refrigerant gas is reduced by ambient air, while in cold-water chiller units, this task is performed by shell and tube converters. Although both chiller systems have a wide range of uses, their preference varies depending on the area of ​​use and the section. In general, air-cooled chillers are less efficient than water-cooled chillers. However, in some cases, air-cooled systems are preferred.

When choosing a chiller, it is helpful to compare the following conditions and make a choice based on these considerations.

In cold air chiller systems, the capacity decreases by approximately 1% for every 1 ° C increase in outside air temperature. While the power absorbed by the compressor increases by approximately 1%.
For those who say which model of chiller to buy, the capacity decreases with increasing altitude in cool air groups. Therefore, consider the height of the city or the installation location of the chiller.
Compressors for cold water chiller systems draw approximately 17 to 37 percent less than compressors for air-cooled groups.
Cold water chiller models use 17 to 30 percent less energy than cool air models, even if all pumps and tower fans are included.
The COP values ​​of cold water groups are 30 to 60% (sometimes higher) better in cooled air chiller models.
Condenser pressure in cold water chiller systems is 25% lower than in cold air groups.
Weights should also be considered when choosing a chiller. The weight of cold water chiller systems is 22 to 35% less than that of cold air groups.
The forecast areas of cold water systems are on average 70% lower than the cool air groups. But the tower needs it.
The initial investment cost of water-cooled chiller systems is 25% lower than that of air-cooled chiller systems.
As the capacity of chillers increases, water chillers become much more cost-effective in terms of operating costs and initial investment.

You can answer your question by considering the above advantages and disadvantages, whether to buy a cool air chiller or cold water. If you are still confused and the question arises which model of chiller to buy, you can ask for advice from chiller sales consultants in Jam Jam refrigerators.

How to choose a cool air chiller?

Cool air chiller technology uses natural or fan-assisted air cooling. If the natural air flow is not sufficient to cool the part without increasing the surface area, an air conditioner added to the part will increase the heat transfer and decrease the temperature of the part by absorbing heat from the part. If more cooling is needed, with the help of an added fan, the air flow on the cooler increases and more heat is transferred to the air. While cooling equipment does not require additional equipment, cooling water systems require additional equipment.

However, although energy consumption is low per unit, the total energy consumption in a given area is higher than that of cold water chiller systems. Although the surface area increases, as the size and weight of the air conditioner increase, the return pressure against the air blown by the fan increases. As the fans get bigger, the fan itself and the mounting parts react to the cooling performance.

How to choose a cold water chiller?

When choosing a cold water chiller, keep in mind that it gives better results than cool air. Because it has a smaller fluid volume, it can withstand more heat, offers a more constant temperature control, and does all this silently. Due to the low density for chiller cooling systems, the air can withstand lower temperatures per unit weight in terms of heat conductivity.

For example: when using air, you have to pass 0.5 cubic meters of air per minute through the air conditioner to increase the temperature of 103 watts, fluid to 10 degrees Celsius. When the coolant is water, 0.144 liters of water per minute will be enough to pass through the cooler.

Which model of chiller should we buy?

You should also consider the disadvantages of air cooling heights. You can choose cool water chiller systems because they show the same performance as they rise above sea level.

Keep in mind that you should also compare the sound they make while working. Cool water chiller systems provide more comfortable working environments with fewer sound generating units. Because the circulation pump circulates very little fluid, it makes less noise. The distance of the circulation pump, radiator and fan also reduces the total noise. For this reason, choosing cool water chiller models will be more profitable.