Calculating Cooling Loads

Calculating chiller and cooling tower refrigeration in tons

Sponsored Links

Chiller Refrigeration Tons

A chiller refrigeration ton is defined as:

    1 refrigeration ton = 12,000 Btu/h = 3,025.9 k Calories/h

A ton is the amount of heat removed by an air conditioning system that would melt 1 ton of ice in 24 hours.

Cooling Tower Tons

A cooling tower ton is defined as:

    1 cooling tower ton = 15,000 Btu/h = 3,782 k Calories/h

Heat Load and Water Flow

A water systems heat load in Btu/h can be simplified to:

h = cp ρ q dt

    = 1 (Btu/lbm oF) 8.33 (lbm/gal) q (gal/min) 60 (min/h) dt (oF)

    = 500 q dt (1)

where

h = heat load (Btu/h)

cp = 1 (Btu/lbm oF) for water

ρ = 8.33 (lbm/gal) for water

q = water volume flow rate (gal/min)

dt = temperature difference (oF)

Example - Water Chiller Cooling

Water flows with 1 gal/min and 10oF temperature difference. The ton of cooling load can be calculated as:

Cooling load = 500 (1 gal/min) (10oF) / 12,000

= 0.42 ton

Sponsored Links

Related Topics

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

Related Documents

Sponsored Links



SketchUp Engineering ToolBox - Online 3D modeling!

SketchUp Engineering ToolBox - enabled for use with the amazing, fun and free Google SketchUp.


Search the ToolBox

Google
Web The Engineering ToolBox

© The Engineering ToolBox 2005

8 5 9


.
Resources, Tools and Basic Information  for Engineering and Design of Technical Applications!

Resources, Tools and Basic Information for Engineering and Design of Technical Applications!

Google
Web The Engineering ToolBox