Brine and steam replaced by a single fluid across a −20 °C to 120 °C process

Zhejiang Chengda Pharmaceutical operated a high-low temperature switching system covering −20 °C to 120 °C. Cooling was supplied by brine and heating by steam. The manufacturer reports that the two-medium arrangement caused severe corrosion, cross-contamination and high operating costs.

The system was converted to LM-4 Glacier Coolant as a single medium serving both the cooling and the heating duty. The manufacturer lists the results as elimination of corrosion-related equipment failures, improved process stability through automated control, lower overall energy consumption, and one fluid spanning both ends of the temperature range. No system volume, tonnage or date is stated.

Running one fluid across the whole working range removes the changeover that a brine-plus-steam arrangement needs, and with it the carry-over between two chemically different circuits. It also means the wetted materials answer to one fluid rather than two. The catalogue describes the LM-4 family as covering industrial cooling and heating with model-specific options, including sub-models for elevated temperatures; the manufacturer's material names the family only.