The ASHRAE 2023 Handbook HVAC Applications is now out, and we need to get ready to revise it again. Updated every four years, this volume is significantly larger than its previous editions, in part due to a new Chapter 66, In-Room Air Cleaners.
Bypass pipes, accompanied by a three-way control valve, are often seen in hydronic systems at both served loads (e.g., reheat coils) as well as at primary equipment (e.g., cooling towers).
This new solution reduces maintenance, noise while increasing efficiency.
September 20, 2023
Fed up with spending substantial resources on the continuous repair of an aging cooling tower, a large North Carolina community college recently opted to replace its failing galvanized-metal unit with an engineered plastic model.
In the past several years, there has been much discussion on the influence of indoor environments on the spread of diseases caused by viruses and bacteria.
These six case studies, covering just the last three years, illustrate how bad second-order effects can get when there are problems with the bypass pipe’s balancing valve.
In August, the U.S. Department of Labor finalized a rule to determine the wages paid on federal projects. It’s expected to increase the pay for hundreds of thousands of workers.
April’s column kicked off a series that dove deep into the concept of building automation system (BAS) alarms. That series was supposed to end last month, but in the process of writing those articles, I realized I have more to say on the topic. So here is my victory lap!