mechanical

http://process-equipment.globalspec.com/LearnMore/Manufacturing_Process_Equipment/Heat_Transfer_Equipment/Cooling_Towers

• The cooling load and its duty cycle
• Local atmospheric conditions: minimum/average/peak temperatures and humidities
• Minimum process temperature required
• Available footprint for the tower and pumps
• Proximity to centres of population
• Local noise legislation
• Distance from cooling load and support for the piping
• Local water analysis
• Availability of power during the duty period
• Location of water dosing specialists and availablility of chemicals
• Maintenance demands
• Local planning and building consents
• Level of on-board technical support
• Availability and loading of other systems
• Distribution network calculations
• Technical backup from supplier's offices locally
• Degree of shade available at chosen location
• Vegetation at chosen location
• etc...

4 things:

-Range

-Approach

-Wet bulb, and

-GPM

Some manufacturers, like Baltimore Aircoil, have selection software you can access on line. For example, see www.baltimoreaircoil.com/english/products/ct/index.html?page=std

If you need to know about 'Range', 'Approach' etc. see www.expertctr.com/ch_1.php

There are many types of towers available. Some may be unsuitable for your application. Check www.expertctr.com/ch_17.php

A knowledgeable sales rep would be a great resource.

thank you very much it is very useful to me