
Chilled Water Air Cooling System
The main equipment that makes up the system:- Schiller
- Air Handling Unit (AHU)
- Cooling tower
- Pumps
The chiller is usually placed either in the basement or on the ceiling and this depends on the type of chiller used. Ceiling coolers They are usually "air cooled" while basement chillers are usually "water cooled" But they both perform the same function of generating chilled water that acts as a cooling medium for air conditioning by removing unwanted heat from the building. The only difference is the method of removing heat from the water.
Air-cooled chilled water production unitsThey are air conditioning units that contain air-cooled condensing units. A cooling tower is not used in this type.
Chilled water production units (evaporator):They are air conditioners that contain water-cooled condensing units, and a cooling tower is used in this type.
Cooling towerThe cooling tower shall be installed on the roof of the building. It is a heat exchanger in which the water used to cool the condenser is cooled
Direct expansion system (dx)DX System is one of the central air conditioning systems, the air used for the cooling field is directly cooled by the refrigerant in the air handling unit cooling coil. Since the air is directly cooled by the chiller, the cooling efficiency of DX units is higher. However, it is not possible to use the refrigerant piping to large distances, so the DX system from the central air conditioning system is usually used for cooling small buildings or rooms on a single floor. The (DX) system in HVAC is growing rapidly due to its ability to eliminate most piping and ductwork. Installation work for this system became easier and thus the cost of the system is lower. For this reason, the use of this system has become commonplace The DX system works in such a way that the evaporator is located in space which gives it ample opportunity for cooling. This will expand the coolant in the evaporator. It will cool down the space by absorbing heat from it. Small cracks, window air conditioner and packaged units are examples of this system.
HVAC System (DX) Features- Lower installation costs.
- Ease of testing, adjusting and balancing the system.
- The minimum distance between the ceiling or the wall
- Low energy use.
- Lower maintenance costs.
- Part of the system can operate without the entire system running in the building.
- Comfort under varying load conditions.
- Low noise (NC 35).
- Good relative humidity control.

DX System is one of the central air conditioning systems, the air used for the cooling field is directly cooled by the refrigerant in the air handling unit cooling coil. Since the air is directly cooled by the chiller, the cooling efficiency of DX units is higher. However, it is not possible to use the refrigerant piping to large distances, so the DX system from the central air conditioning system is usually used for cooling small buildings or rooms on a single floor. P>
The DX system in HVAC is growing rapidly due to its ability to eliminate most piping and ductwork. Installation work for this system became easier and thus the cost of the system is lower. For this reason, the use of this system has become commonplace The DX system works in such a way that the evaporator is located in space which gives it ample opportunity for cooling. This will expand the coolant in the evaporator. It will cool down the space by absorbing heat from it. Small cracks, window air conditioner and boxed units are examples of this system.
(Energy Saver) VRF System:A system that looks very much like split air conditioners. This system includes several indoor (fan) units corresponding to one or more outdoor unit (condenser). Systems can achieve high efficiency through heat recovery and precise temperature control. This is achieved with the use of inverters and electrical control. Systems are divided into two basic forms.
Two-pipe system (cold / hot).
This system can be operated with one mode of operation heating or cooling. This means that all units can only control when in the same position. However, the system allows individual setting of each indoor unit (fan) in the specified position. It is used in large and open spaces or spaces that operate with one heating or cooling system. Using inverters inside the outdoor unit allows the system to perform only the required quantity of it for heating or cooling, thus saving energy in all respects.
