Which coolant is better for heating and is it possible to heat propylene glycol over 70 degrees
open heating system Which coolant is better to use Pereko solid fuel boiler is it possible to heat propylene glycol more than 70 degrees. Sergei
Neither the brand of the boiler nor the type of heating system in this case does not matter. For water heating, regardless of its characteristics, the following types of heat carriers can be used:
Water, preferably distilled. However, it is quite expensive, so prepared water is more often used. This means that, if necessary, its carbonate hardness is normalized, the content of iron and dissolved oxygen is reduced. This can be done by passing water through filters, ion-exchange columns, and letting it settle. It is clear that water is used only in those cases when they live in the house all the time and its freezing is excluded. Non-freezing coolant, it is made on the basis of propylene glycol. Brand - any, but the packaging must clearly indicate what is intended specifically for heating systems
Strictly follow the operating instructions and pay special attention to the fact that concentrated antifreezes must be diluted with water, otherwise they will be too viscous. It should also be borne in mind that propylene glycol has a thermal expansion coefficient greater than water and the expansion tank of an open system should be filled to a slightly lower level.
If the packaging with the coolant directly indicates that it is intended for heating systems, it suits you. It remains only to choose the desired freezing temperature
Can propylene glycol be heated above 70 degrees?
You can, no problem. Manufacturers allow heating "non-freezing" without loss of properties up to 110-115 ºС, this approximately corresponds to the boiling point of propylene glycol.
