What is the difference between scroll and screw chillers?
The two types of air cooled chillers are scroll compressor air cooled chillers and screw compressor air cooled chillers. Scroll compressors are used for the smaller air cooled chillers, and screw compressors are used for larger air cooled chillers and have a variable speed drive option for increased efficiency.
How does air cooled chiller work?
An air-cooled chiller works by absorbing the heat from processed water. Once the water in the air handler system is used, it becomes warm and is sent back to the chiller. Heat is transferred away from the water using the chiller’s evaporator.
What refrigerant is used in chillers?
R717 Ammonia This is the most popular refrigerant used in chiller plants. It has the highest heat absorption rating which makes it ideal for use in smaller, portable chiller units negating the need for large cooling plants. Other benefits of using ammonia as chiller refrigerant are its stable thermal properties.
Where should I put air-cooled chiller?
In this case, when the wind direction is parallel to the air intakes, the chillers are located on the leeward side of the building, where a zone of low pressure is formed.
Is the York® ycal air cooled scroll chiller reliable?
The YORK® YCAL Air-cooled Scroll Chiller is reliable, completely self-contained and designed for easy, low-cost outdoor installation. Brazed plate heat exchanger
What are the capabilities of the ycal0019 and ycal0066?
This capability is standard on YCAL0019 through YCAL0066 models. Motor Current Module Capable of monitoring compressor motor current. Pro- vides extra protection against compressor reverse rota-
What is the capacity of a ycal?
GENERAL The 15 – 65 Ton (53 – 218 kW) YCAL models are shipped complete from the factory ready for installation and use. The unit is pressure-tested, evacuated, and fully charged with R-410A and includes an initial oil charge.
What are the parts of a ycal?
Each unit includes hermetic scroll compressors, a liquid cooler, air cooled condenser, a charge of refrigerant R-410A, and a weather resistant microprocessor control center, all mounted on a rugged, formed- steel base. GENERAL The 15 – 65 Ton (53 – 218 kW) YCAL models are shipped complete from the factory ready for installation and use.