Chilled-Water Systems

Chilled-water systems equations - evaporator and condenser flow rates

In chilled-water systems air conditioners cools down the water to 40 - 45oF (4 - 7oC). The chilled water is distributed throughout the buildings or locations in piping systems and connected to air condition cooling units wherever needed.

Total Heat Removed

The total heat removed by an air condition chilled-water installation:

h = 500 q dt         (1)


h = total heat removed (Btu/h)

q = water flow rate (gal/min)

dt = temperature difference (oF)

Evaporator Flow Rate

The evaporator water flow rate:

qe = htons 24 / dt         (2)


qe = evaporator water flow rate (gal/min)

htons = air condition cooling load (tons)

Condenser Flow Rate

The condenser water flow rate:

qc = htons 30 / dt         (3)


qc = condenser water flow rate (gal/min)

htons = air condition cooling load, chiller tonnage(tons)

Related Topics

  • Air Conditioning - Air Conditioning systems - heating, cooling and dehumidification of indoor air for thermal comfort

Related Documents

Tag Search

Search the Engineering ToolBox

- "Search is the most efficient way to navigate the Engineering ToolBox!"

Engineering ToolBox - SketchUp Extension - Online 3D modeling!

3D Engineering ToolBox Extension to SketchUp - add parametric components to your SketchUp model

Add standard and customized parametric components - like flange beams, lumbers, piping, stairs and more - to your SketchUp model with the Engineering ToolBox - SketchUp Extension/Plugin - enabled for use with the amazing, fun and free SketchUp Make and SketchUp Pro . Add the Engineering ToolBox extension to your SketchUp from the Sketchup Extension Warehouse!

Translate the Engineering ToolBox!
About the Engineering ToolBox!