• More volume needed to achieve required freeze protection temperature.
  • Reduced thermal conductivity, reduces the rate of heat transfer.
  • Greater pumping losses due to increased dynamic and kinematic viscosity.
  • Lower density, reduces the rate of heat transfer.
  • More expensive per kilo and per litre.
  • Larger compressors, pumps and pipes, increasing capex.

Coolflow DTX exhibits very similar heat transfer and pumping characteristics to ethylene glycol and provides >10% additional efficiency and output, when compared with Propylene Glycol.

A study performed by Star Technical Services, based on a system designed and installed by Star Refrigeration, confirmed various improvements in performance, ranging from 7% to 13%. The same study also confirmed that, specifying Coolflow DTX at the design stage could result in a >10% reduction of heat-exchanger and compressor size.

Arla Oakthorpe Dairy converted to Coolflow DTX in 2011 which facilitated several engineering (pipe-work) upgrades and an overall energy saving of 17%.

At the time of writing the list of Coolflow DTX glycol chiller installations has risen beyond 7,000 including thousands of food and beverage systems.

In conclusion it would be reasonable to state, that Coolflow DTX now provides all designers, specifiers and operators of glycol chillers the potential to improve output efficiency and reduce operating costs.

For a copy of the report prepared by Star Technical Services and/or a copy of the complete DTX Dossier, please call 01792 586800 or email info@hydratech.co.uk.