German to English Tech/Engineering Materials (Plastics, Ceramics, etc.) Extrusion Cooling Systems

This word appears in a small list of cooling systems for extruders and suchlike. The other things on the list are Kühlanlagen, Kältemaschinen, Kühltürme and glykolfreie Freikühler/Trockenkühler. That's about all the context I can provide in this particular instance.

I'm completely and utterly stumped by Glykoler, and can't find a reliable translation for it anywhere. Obviously it's something that uses glycol in primary way, but beyond that, I haven't got a clue what you might reasonably call it in English. I did find a few hits for "glycoler", but that seemed to be just people literally translating the German word (which also seems to be a Dutch and Swedish word, going by the Google hits I got). TIA for any light you can shed on this most obscure word.