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Engineered Systems magazine’s March 2019 issue examines the innovations offered by manufacturers at the 2019 AHR Expo and engineers at the ASHRAE Winter Conference, explores the difference between direct drive and belt drive fans in institutional applications, compares and contrasts the prescriptive and performance paths for boiler compliance, and much more.
The HVAC industry continues to evolve, but what does the future of the built environment look like? Engineered Systems’ editors turned to the winners of the AHR Expo’s Innovation Awards to get their take on where HVAC trends and technology is heading.
Each year, the AHR Expo honors manufacturers that are looking forward and breaking new technological ground. Those manufacturers are presented with Innovation Awards covering 10 categories, including building automation, ventilation, heating, cooling, IAQ, and more.
In 1973, an energy crisis led to the development of ASHRAE Standard 90. This event served as a catalyst for the creation of building design efficiency requirements, which eventually led to the creation of what is now known as the energy code for buildings.
The International Building Code defines institutional occupancies under Institutional Group I and includes the use of buildings or structures where care or supervision is provided to persons who are or are not capable of self-preservation without physical assistance.
While both belt and direct drive fans have been around for a long time, the mainstay fan for most industrial fan applications under 250 hp has been the belt drive fan.
ATLANTA — ASHRAE is poised for a busy year in 2019. At its 2019 Winter Conference in Atlanta, the 56,000-member engineering association introduced a lengthy agenda that included renovation of a new net-zero world headquarters, the signing of a memorandum of understanding with the Pakistan HVACR Society (PHVACR), a pledge to prepare building professionals for the challenges and opportunities of designing efficient and grid-responsive buildings within the changing energy sector, and more.
Once upon a time, humans lived outdoors in harmony with vast and diverse populations of bacteria, fungi, and viruses, largely unaware of the presence of these microbes.
This month’s Facility File focuses on the March Back2Basics retrofit of a campus-wide hot water boiler system covering 40 buildings with primary-, secondary-, and tertiary-pumping based on a performance lease agreement to retro-commission the system with a guaranteed operating savings. The university will hire an owner representative to work with a design-build-operate-maintain performance contractor (PC).
For years, I worked for a mechanical contracting company that shifted its business plan from design-bid-build (DBB) project delivery to design-build (DB) project delivery. The move became very obvious as the optimum way to provide HVAC services.
Honestly, the definition of open systems is the most confusing of the three types. Open protocols are pretty straight forward — they’re protocols that communicate with one another.
Much has been written about systems’ readiness for functional performance testing at the end of construction, and pre-functional checklists have become common elements of the commissioning process.
Constructing a building takes an army. Designers, engineers, general contractors, flooring installers, HVAC contractors, plumbers, roofers, mappers, and surveyors are just a few of the blue-collar experts necessary to optimize a commercial building.
