While the current installed base of district-energy systems in the United States relies on shell-and-tube and gasket-plate heat exchangers, an alternative technology is gaining in prominence: the brazed-plate heat exchanger....More
Much like its namesake—Alexander Hamilton, the first U.S. Treasury secretary—Hamilton College has a keen eye for finances. When administrators set out to upgrade heating and hot-water systems, they sought a local company that manufactures products that deliver lower operating costs and bring a high return on investment....More
Looking to maximize space in his Taco Bell restaurants, Bob Jenkins, owner of Charter Foods, visited Rinnai’s headquarters and assembly facility in Peachtree City, Ga., to learn more about tankless water-heating solutions....More
In 2012, Wright-Patterson Air Force Base faced the daunting task of bringing two of its central heating plants into compliance with the new MACT emission limits for boilers established by the U.S. EPA....More
In June, we reported on a U.S. Department of Energy proposal to tighten efficiency standards for commercial packaged boilers. Three months later, that rulemaking is still open. When it might be finished is difficult to say....More
This fall, warm weather is predicted across much of the eastern United States, while developing dryness and worsening drought conditions will grip the majority of the western United States, and frequent showers will result in cooler air in the Northwest....More
“How does a company maintain its success from the tail end of the 19th century all the way to the 21st?” Contractor's Steve Spaulding asks in a profile of Weil-McLain. He says it boils down to five company values....More
There is a leak at the highest reaches of the Montana state government—the kind not associated with a loose-lipped staffer, but, rather, a safety relief valve on a 40-year-old boiler. The supervisor of facilities maintenance and operations, Hank Hoovestahl, wishes the environmental guys who decided to connect the steam boiler to a newer hydronic boiler would have talked to the O&M staff first. Luckily for Hank, he does not have to ask his pal Johnny Tundra twice for help.
Advertisements in 1943 encouraged Americans to join and support the war effort. Large machines, ships, and trucks were popular visuals; unification and work were common themes. Here is a selection of advertisements that appeared in HPAC Engineering in 1943....More
Hazelwood School District includes more than 30 buildings. The HVAC systems in most of those buildings were 15 to 25 years old, and maintenance costs were rising. Tom Mangogna and his engineering staff felt there had to be more efficient systems on the market....More
Fred, a mechanical engineer, and William, a civil engineer, had been friends for years and met weekly for lunch at their favorite restaurant. The waitress had barely finished taking their orders when Fred asked William: “Are you familiar with geothermal heat-pump systems? I have a twist I am looking at for a new project. Actually, it all started as a result of a fishing trip.”...More
When fully utilized, Building Management Systems (BMS) offer facility managers many advantages. Harnessing building data to help correct root-cause energy inefficiencies is one area that is increasingly important yet challenging. This paper shows how leveraging BMS data through building data analytics software and combining it with expert engineering services creates actionable intelligence that can reduce HVAC energy costs by up to 30%....More
Though not required until December, 2022, the new UL 60335-2-40 standard is currently active for matched and packaged air conditioners/heat pumps (no standalone systems), liquid chillers and hydronic fan coil units, hot water heat pumps, dehumidifiers and supplemental heaters (designed as part of an appliance package).
A lot of leading building automations systems (BAS) are touted as being open. But what does that really mean? And does being open mean that building owners and operators are getting the most out of their BAS investments?
During this webinar, Johnson Controls BAS experts will examine the definition of openness and advise on what to look for from a BAS provider when secure interoperability and ease of integration is paramount. Because a unified intelligent infrastructure provides better interoperability so businesses run more efficiently....More