Read the article to learn more about how district chiller plants work and how important they are in the current circumstances. To learn more, go to: https://www.emicool.com/en/customers

1. How Water Chilled Air
Conditioning Units
Work

2. ● Most commercial buildings make use of HVAC
systems to maintain their temperatures.
● Today, chillers are mainly used for cooling purposes in
these buildings based on their sustainability and
affordability.
2

3. ● Compared to a dry bulb, the temperature of the wet-bulb is usually lower.
● Because of this, the condensing temperature and pressure of the refrigerant are
lower compared to the air-chilled conditioning system.
● Thus in most scenarios water chilled air conditioning works more efficiently
reducing the district cooling costs per ton.
3

4. District chiller- How does it work?
● The chiller system is based on the principle of
vapor absorption/compression.
● The refrigerant passes through 4 devices:
4

5. ● Evaporator- it performs the role of a heat exchanger.
● Compressor- in a district cooling chiller plant, a condenser performs dual
functions.
● Condenser- inside the condenser, the refrigerant changes back into a liquid,
and the heat produced during the process is carried away through a cooling
medium.
5

6. ● First, heat is moved from the refrigerant vapor into the condenser water.
● Then, this water is pumped into the cooling tower that discharges the heat into
the atmosphere.
● Let us explore the chilled water services in more detail.
6

7. Water chilled air conditioning- how it
works?
● Recirculating condenser water from a cooling tower is used in a water-
cooled chiller to condense the refrigerant.
● Here the refrigerant depends on the temperature and flow rate of the
condenser water.
● The temperature and the flow rate depends on the temperature of the wet
bulb.
7

8. ● Water chillers are usually used for medium or large-size installations.
● Large facilities that have access to water supply like airports, malls, etc make use
of water chillers.
● They have a long life span and are built indoors thus protecting them from other
damages.
8

9. Thank You !