Antifreeze Solutions in Home Fire Sprinkler Systems.

Аннотация

Two compounds, glycerin and propylene glycol, are permitted by NFPA 13 for use as antifreeze solutions with water in sprinkler systems supplied by either potable or nonpotable water connections.3 This report primarily address glycerin and propylene glycol antifreeze solutions, because they are the only solutions permitted by NFPA 13 for use in sprinkler systems connected to potable water supplies. Both compounds are fully miscible in water, meaning that they will form a solution with water in all proportions. Once in solution, both compounds will remain in solution and do not exhibit settling or separation from the solution