Comparison of ducted split with chiller

As you know, all air conditioners have their own advantages and use, and each one is used in a way for more comfort and convenience in different office environments, hospitals, hotels, shopping centers, and residential homes. If you are planning to build a residential or office building, perhaps one of the most important questions when starting the design and implementation of the building is related to the important issue of choosing an air conditioning system for the project. Ducted splits and chillers are two common air conditioning devices with the ability to cool the environment, and in this article, we are going to compare these two commonly used equipment in different places. In the following, the comparison of a ducted split with a chiller from different perspectives such as the cooling power of the required supplementary systems, and the ability to regulate humidity and air filtration, etc. have been examined. Although there are many more cases regarding the comparison and differentiation of these two types of devices, we have tried to explain the most important points for you in the rest of this article, please stay with us.

Click to view brands, models, and different types, find out the price, and Buy A DUCTED SPLIT.

Chiller and ducted split systems structure

To better understand the difference and compare the split duct with the chiller, it is necessary to first familiarize yourself with the system structure of these two devices.

Chiller: A chiller is a device consisting of a compressor, heat exchangers called evaporator and condenser, and an expansion valve in which Freon gas (refrigerant) flows in its refrigeration cycle, and during a permanent refrigeration cycle, it leads to a decrease in the temperature of the cooling water of the fan coil. Coils or air generator. After the water is cooled by the pump, it is pumped to the cooling coil of another device inside the building, such as a fan coil or an air handling unit. In some cases, instead of cooling the water, the chiller sends the refrigerant to the air handling unit through piping and directly cools the air, in which case this system is called an air handling unit with a DX coil or a central heating boiler unit. Therefore, chillers are usually available in three forms:

• Along with Fan Coil
• With an air-handling unit
• In the form of a central heating boiler (or rooftop central heating boiler) with DX coil (in air chillers or mini chillers) 

The cold water sent from the chiller side flows in the coil of these devices and with the rotation of the ventilation fan, it passes the air over the cooling coils and reduces its temperature.

Ducted split: Split duct consists of two parts, an external unit, and an internal unit. One part has a compressor, condenser, etc. (external unit) that sends the refrigerant through piping to the evaporator (internal unit) which is usually placed on top of the false ceiling, and the air is cooled by the refrigerant. That is, the refrigerant, whose temperature has decreased drastically, enters the evaporator coil, and the air in the room is blown from the cooling coil by the fan, and in this way, the refrigerant absorbs the heat and cools the air.

Ducted splits or channel splits in the capacity of 18,000, 24,000, 30,000, 36,000, 42,000, 48,000, and 60,000 BTU are produced and supplied in the form of single-phase or 3-phase electricity in different dimensions.

In general, the chiller system in buildings is installed centrally and for the entire building, but ducted splits are installed for each unit   Of course, if a separate mini chiller is used for each unit, the independence of each unit will be considered in terms of providing cooling. independently, one or even two ducted split devices (based on the size of the infrastructure and the use of that unit).

Also, in the chiller system, by using the thermostat and adjusting the temperature of the fan coil operation command, the temperature of each room or hall can be adjusted as desired, but in the ducted split, it is possible to adjust the temperature of each room simply and without installing the air damper motor in the ventilation channel. It does not exist.

How to heat the environment by ducted split and chiller

In general, as you know, compression chillers (water, air, and mini chillers) are equipment that are only capable of providing cooling. But in duct splits, they need hot water for heating. In the evaporator (indoor unit) of the split duct, a special coil for hot water is installed (in addition to the special coil for the refrigerant), and there is a separate coil for hot water in the fan coil and air handling unit (which requires hot water from the central engine room of the building). be). In both systems, water is heated by a gas-burning heat source such as a boiler or a gas-burning package and sent to the coils of these devices, and the aeration fan heats the air by rotating the airflow.

Additional systems are required for ducted split and chiller

As we said, in both of these systems (both chiller and fan coil and ducted splits), heating is done by the engine room or central heating boiler hot water. In fan coils, it is no longer necessary to consider a separate hot water coil, and if we connect cold water to the inlet pipe of the fan coils, we can get cooling from them, and if we connect hot water to their inlet pipe, they will be heated. But in the ducted split system, if we want to use spa heating, a special hot water coil must be added to the ducted split.

Comparison of the ducted split with chiller in the possibility of dehumidification and air filtration

Another difference between ducted splits and chillers is their ability to add or reduce the humidity of the air entering the building. Ducted split reduces humidity only in cooling mode when refrigerant enters the evaporator coils (in summer) and cannot increase humidity in winter. But in the chiller system, by connecting it to the air handling unit or when it is used as a package unit, you can add humidification and dehumidification equipment to the air handling unit and carefully adjust the air humidity to the desired level both in summer and winter.
The evaporator (internal unit) of the ducted split has smaller dimensions compared to the air handling unit, and because it is placed on top of the false ceiling, we are limited in adding filters, and only usually metal filters (in the form of two or three layers) can be installed in it. so that coarse particles and dust do not enter the internal unit of the split duct. But in the air handling unit, all kinds of filters (any type of filter and according to the need) can be added in the air passage, and with HEPA and ULPA filters, a very high efficiency of the percentage of air cleanliness can be achieved.

You can also read the article DIFFERENCE AND COMPARISON OF AIR CONDITIONER WITH DUCTED SPLIT for more information.

Final speech

We hope that we have been able to provide useful information regarding the comparison of the ducted split with the chiller in this article. Damatajhiz specialized collection (the first and most reliable specialized collection in the field of building facilities equipment and all air conditioning devices since 1383 and has 3 valid business licenses) types of chillers and ducted splits and hundreds of other installation products with the guarantee of the originality of the goods, after-sales service It offers valid sales and guarantees. To get more information and to see the best types and brands of duct splits and water and air chillers and mini chillers, to know the updated prices, and to buy the product you want, you can refer to the website of the Damatajhiz specialized collection.

We are waiting for your call and look forward to meeting you at the DAMATAJHIZ group

By sharing the above article on social networks, let your friends know about its important content.