ENTEC offers load sensitive applications that will maximize the effectiveness of your chilled water systems.

The Right Chiller. While a whole-plant approach must be taken to achieve the most efficient chilled water plant solution, the chiller itself is a very large energy consumer and should be selected to minimize its energy consumption:

• Select Chiller for High Efficiency
  • Chiller selection should include a bin analysis to predict chiller energy usage over a typical weather year. The use of water-cooled chillers with an aggressive condenser water reset is critical to achieve peak system efficiency with modern chillers.
• Implement an Aggressive Condenser Water Reset
  • Chiller load is determined both by the temperature of the chilled water return and the temperature of the condenser water supply. A condenser water reset should be implemented to provide low temperature condenser water, to the extent allowed by the chiller manufacturer. Additional tower fan power required to produce lower temperature chilled water should be considered, but chiller efficiency gains typically dominate the optimization.
• Monitor System Efficiency
  • Install reliable, accurate monitoring of key plant metrics such as kW/ton. The first cost of monitoring can be quickly recovered by identifying common efficiency problems such as: low refrigerant charge, non-optimal compressor mapping, incorrect sensors, incorrect pumping control, etc. Efficiency monitoring provides the information needed for facilities personnel to optimize the system's energy performance during plant operation and avoid efficiency decay and troubleshoot developing equipment problems over the life of the system.