Cooling water systems
Cooling Water Problems and
Solutions
Course No: M05-009
Credit: 5 PDH
A. Bhatia
Continuing Education and Development, Inc.
9 Greyridge Farm Court
Stony Point, NY 10980
P: (877) 322-5800
F: (877) 322-4774 info@cedengineering.com COOLING WATER PROBLEMS AND SOLUTIONS
Water is used in cooling systems as a heat transfer medium and frequently also as the final point to reject heat into the atmosphere by evaporating inside cooling towers. Depending on the quality of available fresh water supply, waterside problems develop in cooling water systems from: •
Scaling
•
Corrosion
•
Dirt and dust accumulation
•
Biological growth
Any of these problems – or more usually a combination of them – result in costly unscheduled downtime, reduced capacity, increased water usage, high operation and maintenance costs, expensive parts replacements, and acid cleaning operations which reduce the life of the cooling system. There is no single method of treating cooling water. Selection of water treatment program for a specific system depends on:
1. System design, including system capacity, cooling tower type, basin depth, materials of construction, flow rates, heat transfer rates, temperature drop and associated accessories
2. Water, including make up water composition / quality, availability of pre-treatment and assumed cycle of concentration
3. Contaminants, including process leaks and airborne debris
4. Wastewater discharge restrictions
5. Surrounding environment and air quality
In this course, we will discuss the reasons and means for controlling scale, corrosion and biological fouling.
Critical Parameters
The critical parameters for cooling water are: conductivity, total dissolved solids (TDS), hardness, pH, alkalinity and saturation index.
Conductivity and Total Dissolved Solids (TDS)
Conductivity is a measure of the ability of water to conduct electrical current and it indicates the amount of the dissolved solids
Solutions
Course No: M05-009
Credit: 5 PDH
A. Bhatia
Continuing Education and Development, Inc.
9 Greyridge Farm Court
Stony Point, NY 10980
P: (877) 322-5800
F: (877) 322-4774 info@cedengineering.com COOLING WATER PROBLEMS AND SOLUTIONS
Water is used in cooling systems as a heat transfer medium and frequently also as the final point to reject heat into the atmosphere by evaporating inside cooling towers. Depending on the quality of available fresh water supply, waterside problems develop in cooling water systems from: •
Scaling
•
Corrosion
•
Dirt and dust accumulation
•
Biological growth
Any of these problems – or more usually a combination of them – result in costly unscheduled downtime, reduced capacity, increased water usage, high operation and maintenance costs, expensive parts replacements, and acid cleaning operations which reduce the life of the cooling system. There is no single method of treating cooling water. Selection of water treatment program for a specific system depends on:
1. System design, including system capacity, cooling tower type, basin depth, materials of construction, flow rates, heat transfer rates, temperature drop and associated accessories
2. Water, including make up water composition / quality, availability of pre-treatment and assumed cycle of concentration
3. Contaminants, including process leaks and airborne debris
4. Wastewater discharge restrictions
5. Surrounding environment and air quality
In this course, we will discuss the reasons and means for controlling scale, corrosion and biological fouling.
Critical Parameters
The critical parameters for cooling water are: conductivity, total dissolved solids (TDS), hardness, pH, alkalinity and saturation index.
Conductivity and Total Dissolved Solids (TDS)
Conductivity is a measure of the ability of water to conduct electrical current and it indicates the amount of the dissolved solids