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Application - Cooling Water and Boiler Feed Water

Cooling Water and Boiler Feed Water  

Appropriate measurement methods ensure that quality is maintained in applications where water is used as the central cooling and heating medium. When used correctly they also help to minimize plant maintenance costs.


Cooling water

Cooling water is used in industrial processes to dissipate large amounts of heat. Boiler feed water, on the other hand, is used in the water/steam circuit for electricity generation in power stations. The water has to meet specific requirements for both applications, which is why it is analyzed on a regular basis.

Critical parameters are monitored through regular laboratory tests and continuous online. This is the only way of ensuring flawless and cost-effective operation.

Key parameters (depending on the type of facility) include:

  • Hardness / m/p-value
  • Conductivity
  • Turbidity
  • Phosphates
  • Disinfection with chlorine, chlorine dioxide or ozone
  • Ammonium
  • Chlorides

Boiler feed water

The quality requirements for boiler feed water are similarly high. The operating life of the facility can be optimized by complying with these requirements and continuously monitoring critical parameters. This avoids the need for premature repairs and maintenance work.

The most important parameters are: conductivity, pH, sodium and silica concentration and as the primary corrosion parameter, oxygen content. Our Orbisphere K1100 optical sensor (used in conjunction with the 410 transmitter) and the new portable Orbisphere 3100 provide continuous oxygen monitoring. Both are based on the innovative LDO technology.

Demineralisation of raw water or condensate water is an important element in the production of boiler feed water. Dissolved minerals/salts can be deposited on heating surfaces, in pipes or on turbine blades, causing significant damage.  The functionality of ion exchangers can be monitored continuously by measuring parameters such as the conductivity or silicate content with the Polymetron 9210.

Other parameters include:

  • Alkalinity
  • Ammonium
  • Phosphates
  • pH
  • Oxygen binders such as hydrazine, DEHA or carbohydrazide
  • Turbidity
  • Iron/copper

HACH offers a comprehensive product portfolio for cooling water and feed water analysis.

Local case studies  

Reliable and efficient operation– now!

A stable process is the most important prerequisite for guaranteeing a continuous and safe operation.  This requirement can only be fulfilled when reliable measurement systems are used for continuous monitoring.

Our instrument portfolio comprises a broad range of products, including online instruments, laboratory equipment, analysis kits and reagents for full solutions to keep your cooling and boiler water at optimal performance.

Look at how we help these famous Southeast Asia industrial plants get reliable and efficient operation.

Hach helps key provider of energy solutions avoid plant shutdown in Tuas, Singapore

Hach helps significant chemical company get safe, reliable and efficient operation in Bukom, Singapore

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