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2010 Edition, March 2010

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ISO/IEC 27001

Product Details:

  • Revision: 2010 Edition, March 2010
  • Published Date: March 2010
  • Status: Active, Most Current
  • Document Language: English
  • Published By: Cooling Tower Institute (CTI)
  • Page Count: 18
  • ANSI Approved: No
  • DoD Adopted: No

Description / Abstract:

A cooling tower is the most useful device available to industry for dissipating large heat loads at a reasonable cost. Water is usually available, it is inexpensive, and it provides an excellent heat-transfer medium within certain temperature limitations.

Many things can be done to aid in the maintenance and operation of a cooling tower to increase its efficiency and longevity. An average process cooling tower is operated to some degree on a year-round basis and is, therefore, alternately, exposed to hot, warm, or cold air and water. The air is sometimes dirty, polluted, and carries micro-biological organisms. Also, there is always an abundance of oxygen to support life and to accelerate corrosion. Moisture conditions around the cooling tower range from water saturation to extreme dryness. Temperatures may range from extremely hot to extremely cold. This combination of operating conditions can create specific problems for cooling towers. For this reason, the materials of construction (Ref. 1) for a cooling tower are of great importance, and should be given detailed attention. Some material choices are obvious; others have been proven or disproven through experience.

Fortunately, most of the problems encountered in a cooling tower can be overcome either by design (materials of construction) or by operational techniques. However, they can become serious - and costly - if cooling tower maintenance and care are not understood and practiced. It is extremely difficult to separate cooling tower maintenance from cooling tower operation. Neglect by operating personnel in administering the water treating chemicals, in pH control, and in proper housekeeping practices can result in devastating losses, and these losses may not be confined to the cooling tower alone but can be widespread throughout the plant depending upon the circulating water leaving the cooling tower. Remember that good cooling tower operation goes hand-in-hand with preventative maintenance of the cooling tower, so much so that they become almost synonymous.

An operator of equipment must have some familiarity with the equipment if it is to be operated and maintained efficiently. This chapter is directed primarily towards the operator and/or the maintenance person.

Section I - Cooling Tower Terminology - is an alphabetical listing and definitions of many of the common terms used in cooling tower operation and maintenance.

Section 2 - Type of Cooling Towers - presents a discussion of the various types of cooling towers with schematics depicting air and water flow characteristics.

Section 3 - Operation, Maintenance and Inspection - is a discussion of problem areas in cooling towers; what and where to look for these problems; and suggestions on operations and maintenance.