Improving the energy efficiency of cooling systems

Using our research and development resources, we examined various ways to improve the energy efficiency of cooling systems utilising new advanced algorithms based on on-line water distribution models.

Cooling water is used extensively in a number of industries to lower process temperatures. Cooling systems used to circulate the water across cooling towers and operate fans in forced draft units consume a significant amount of energy. Often, there is a direct link between the cold water temperature and process efficiency as well.

To examine various ways to improve the energy efficiency of cooling systems, we conducted a study using historical data and operational measurements from a major petrochemical production site. Our study revealed the potential for substantial energy savings, especially in cold and moderate climates using various options, such as changing the:

• L/G ratio
• water flow
• air flow using fan settings
• water pressure
• cooling water distribution

Our solution consisting of real-time control using on-line water distribution models, weather information and production data can thus, effectively make cooling systems more energy efficient.