Gerson Mora, Author at Chilling Solutions Training

Water Cooled Centrifugal Chiller

The Water Cooled Centrifugal Chiller is a fantastic machine that uses a compression refrigeration cycle to generate massive amounts of ice water for applications with high thermal loads.

The best part? It’s surprisingly simple to understand!

This chiller uses a centrifugal compressor with an impeller wheel that spins at a high speed.
As the coolant enters, it acquires the speed of the impellers and moves radially under the effect of centrifugal force.
The refrigerant then leaves the impeller and enters the compressor volute, which is a curved funnel that increases in area as it approaches the discharge port. By doing this, it increases its cross-sectional area to convert the speed of the refrigerant into pressure. This results in coolant that has high pressure and is ready for use!
Centrifugal chillers are perfect for handling large amounts of thermal load and typically have a water-cooled condenser.
They also have few friction parts, which means they’re very efficient and easy to maintain. Plus, the frictionless operation means that the vibration of the chiller is close to zero.
To control the capacity of the compressor, vanes at the inlet of the centrifugal compressor are used. As the blades close, the flow of refrigerant entering the compressor reduces, and the compressor revolutions are reduced to generate the required pressure.
Magnetic bearings improve the efficiency and increase the life of the machine, and some centrifugal chillers do not require oil.
Not using oil increases the efficiency of the chiller heat exchangers. The partial load efficiency indicator “IPLV” can reach 13, and the chiller can consume 30 to 50% less energy. Centrifugal chillers can have a useful life of up to 30 years.
In summary, the Water Cooled Centrifugal Chiller is a reliable and efficient machine that can handle large amounts of thermal load. Its simple operation, low maintenance, and energy efficiency make it an excellent option for any application with high thermal loads.

Air Cooled Water Chiller System

The Air Cooled Water Cooling System uses powerful fans to dissipate heat from the ice water into the environment, making it an ideal choice for those looking for a cooling solution with lower thermal load requirements.

These systems still utilize traditional components such as the evaporator, compressor, condenser, and expansion valve, all linked by a piping circuit, but with the addition of powerful fans located on the condenser.

Before investing in an air cooled chiller, there are a few important factors to consider.

For lower thermal load requirements, the use of air-cooled chillers is recommended, especially for those with space limitations for machine room mounting or limited availability of maintenance personnel.
While air-cooled chillers tend to generate more noise and have higher electrical consumption in environments with low relative humidity and high temperatures, they offer a cost-effective option for those looking to reduce initial equipment investment.
Air-cooled chillers are fully factory assembled, making installation easier and cheaper. The best-selling air-cooled chiller features a scroll compressor, while larger capacity options are available with screw compressors.
Overall, the air cooled water cooling system is an efficient and reliable choice for those in need of a cooling solution for smaller thermal load requirements.

Water Cooled Chiller System

The water cooled chiller system is an installation whose purpose is to generate chilled water, with high energy efficiency.
This system requires an additional piping circuit.
The additional circuit can transfer another independent flow of water to the frozen liquid, which is being generated in the evaporator of the chiller.
The water from the additional circuit is at room temperature and moves towards the chiller condenser.
The water from the additional circuit is used to extract the heat from the chiller condenser.
When leaving the condenser, the water is taken to a cooling tower.
In the cooling tower, the water recovers the temperature of the environment. the water returns to the chiller condenser.

Chilled Water Air Conditioning System

If you need to cool a large area with less electrical energy consumption, then a Chilled Water Air Conditioning System is an ideal solution for you.

This type of air conditioning system uses a refrigeration cycle to cool water, which is then carried through pipes to cool the air in the environment.
It’s a central system that provides the right amount of cold air needed for the space, reducing the likelihood of failure and saving energy.
Chilled Water Air Conditioning Systems are designed to match the cold air requirements of the facility, reducing maintenance costs, and allowing for efficient air filtration.
This type of air conditioning system also makes it possible to renew the air inside the room with external air and avoids the need for high-power electrical installations.
One of the significant advantages of a Chilled Water Air Conditioning System is its low noise generation.
The iced water temperature is usually maintained at 7°C (44°F) at the outlet of the chiller and 12°C (54°F) at the return, which chills the air to condition the environment.
The components of a chilled water central air conditioning system include a chiller, water distribution system, and air distribution system, which are responsible for generating low-temperature, transporting water to the area, and handling and carrying the air to the rooms.

Compared to conventional air conditioning equipment, Chilled Water Air Conditioning Systems are more efficient, require less maintenance, and are designed to match the specific cooling requirements of a facility.

*Condition:*	*Splitt*	*Aire* Tipo Paquete *(Ducts)*	*Chiller*
Number Of Equipements	High	Low	Low
Electric Consumption	Medium-Hight	Low-Medium	Low
Maintenance frequency	Medium	Low-Medium	Low-Medium
Initial investment of money	Low	Medium	Hight
*Noise*	Medium-Low	Medium-Low	Low
Quality of air	Low	Hight	Hight
*Experience* of designer.	Low	Medium-Hight	Hight
*Required* *area by* *installation*	Low	Medium-Low	Medium-Hight

Chiller vs Conventional Air Conditioning Equipment

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