Hvac Chilled Water System Design

Chw systems also may be used for removing process or other heating loads.

Hvac chilled water system design.

The principal objectives of chilled water pumping system selection and design are to. How chilled water air conditioning works. Chilled water is cooled to between 40 f and 45 f and is circulated through a water coil equipped air handler heat is absorbed from the air as the the air handler blower re. Chilled water systems provide cooling to a building by using chilled water to absorb heat from the building s spaces.

The water leaves the chilled water evaporator at 45 f or 7 c. And one ton of refrigeration is 12000 btu. A typical chiller uses the process of refrigeration to chill water in a chiller barrel. However the purpose of a chiller remains the same.

To remove heat from water. Designing chilled water systems typically used for cooling and dehumidifying a building s air chilled water chw systems circulate it throughout a building or campus complex. This class is intended for hvac consulting engineers energy engineers facility managers property managers involved in the selection design operation or maintenance of commercial buildings using an applied chilled water system. At the heart of the water chilled system a chiller removes heat from water by means of a refrigeration cycle.

The chiller is the section of the system where an exchange of heat occurred between the water that goes to the building and the evaporator. In a chilled water air conditioning system water does the chore of absorbing heat from inside and transfering that heat outside to be dispersed into the atmosphere. Chilled water system basics. This chilled water is then circulated through the entire building by the use of a pump.

While designing a chilled water system a myriad of decisions must be made. This water is pumped through chilled water piping throughout the building where it will pass through a coil. Chilled water system basics chilled water systems in residential hvac systems are extremely rare.