A tradeoff has always existed between the water temperature at which hydronic heat emitters are sized and their cost. The higher the supply water temperature assumed by the designer, the smaller the required heat emitters and the lower their installed cost.
Two dual-fuel natural gas/propane and No. 2 fuel oil condensing boilers — GMI-8M-DF and GMI-4M-DF — have been added to the company’s condensing boiler lineup. The boilers can run either natural gas or propane as the main fuel with No. 2 fuel oil as the backup.
Ultra-high efficiency, the Triple-Flex™ Series of hot-water condensing boilers deliver a minimum 90 percent operating efficiency with 160°F return and 180° supply at maximum input.
The University of Missouri (MU) in Columbia, Mo. is being commended for its commitment to energy reduction and sustainability through the installation of a new biomass boiler.
Designed to offer a solution for solar thermal and ground-source applications with an emphasis on hydronic space heating, the multifunctional Thermal-Stor™ stratified solar thermal storage tank operates as a storage tank and hydronic buffer tank while occupying the space of a single unit.
High efficiency comes with a price that’s higher than normal efficiency (whatever that is), and because of that higher price, high efficiency is now a subjective term that is open to broad interpretation, and perhaps even reinvention.
The application of wet heat technology has expanded over the years and new technologies that improve control and efficiencies are pushing this industry sector further ahead.
From residential to commercial to futuristic, these wet heat applications provide a quick look at what contractors are specifying for some of their boiler customers.
Weldin Construction’s Mechanical Division has successfully completed multiple hydronic installations throughout the Joint Base Elmendorf-Richardson (JBER) Air Force base near Anchorage, Alaska.