Heat transfer fluid «THERMAGENT SOL» is physiologically non-hazardous coolant in the form of a transparent liquid on the basis of an aqueous solution of 1.2 - propylene glycol and higher glycols (made in Germany), used in solar heating systems, especially those that work at elevated temperatures. The product is mixed with deionized water and has freezing resistance about minus 23 º C and a working temperature of plus 200 º C.
This coolant contains corrosion inhibitors, non-toxic and contains no amines, nitrites and phosphates. Advanced technology «Organic Acid Technology» is used in the manufacture. The product complies with European Union requirements according to DIN 4757 part 3 for solar heating systems. The composition also includes the high-boiling physiologically non-hazardous, high molecular weight glycol having a boiling point above +290 º C at 1013 mbar.
«THERMAGENT SOL» was designed by virtue of expanding of the use of vacuum collectors, having a high temperature idle - up to +260 º C. Conventional coolants based on ethylene glycol and propylene glycol are apt to evaporate in such systems at high temperatures because of the low boiling points of these glycols. They leave some insoluble saltlike deposits, which can lead to the problems at work if the collector often stands idle. This new product consists mainly of high-boiling physiologically non-hazardous, high-molecular glycols having a boiling point above +290 º C at 1013 mbar. Thus, the mentioned deposits remain to be liquid.