Mixing Methods with Radiant Heating Systems

摘要

When designing a radiant heating system,it becomes obvious that this system has characteristics different from the conventional baseboard-type of heating system.One quick difference is the temperature of the water circulated through the tubing.Most radiant systems can be classified into two types.The first is a”wet system”in which the tubing is installed into concrete.The second type is a”dry system”where the tubing is either stapled-up from underneath the floor or laid down on a sub-floor and the final flooring placed on top of it.The average water temperatures are 110C-120CF for the concrete type and 130°-140°F for the staple-up application;of course,there are exceptions where hotter or cooler water may be required.Unfortunately,most oil-fired boilers can't operate at such low temperatures without experiencing flue gas problems.The best way of overcoming this problem is by using some type of mixing device,which lowers the supply temperature to the radiant zone(s)while allowing the boiler loop to maintain a temperature high enough to satisfy its requirements.There are numerous mixing methods available.