When designing hydronic circuits, most of us focus on what’s necessary for that circuit to absorb thermal energy at a heat source, carry it along like a conveyor belt and release that energy at one or more heat emitters.
The Caleffi 520 series AngleMix thermostatic mixing valve features angled geometry that reduces costs as the domestic hot-water tank outlet is piped in-line with the valve’s mixed water outlet, requiring fewer fittings and less space, the company notes.
CREST condensing boilers are known for heating the water in commercial facilities and providing industry-leading efficiency and reliability, Lochinvar says.
The Hercules Cryo-Tek original antifreeze is designed for use in hydronic heating and cooling closed-loop systems, most solar heating systems, snow melts, radiant heating, and general plumbing systems.
Assembling prior columns, updating older information, along with some new content for the four eBooks has been an interesting review of my 48-years as a mechanical contractor.
I don’t know about you, but after more than 40 years of working in the HVAC industry I find myself a bit overwhelmed trying to keep up with standards, codes and other well-intentioned regulations, issued by “authorities having jurisdiction,” or sometimes by “authorities” not having jurisdiction, but looking to cash in by grabbing the steering wheel on some of the latest trends in HVAC technology.
The classic way of estimating heating load in smaller, envelope-dominated buildings is to assume the rate of heat loss is proportional to the difference between the inside and outside temperature.