Most of the current anxiety over refrigerant selection is unwarranted. Engineers, owners, and others involved should revert to traditional chiller specifications based on cost, performance, local manufacturer support, service options, and reliability. Anticipating more stringent environmental regulations, they also should take all practical steps to reduce refrigerant releases and increase efficiency.
Wood structures are highly susceptible to rapidly spreading fire, and George Washington's mansion at Mount Vernon is all wood, much of it original. Equally effective and unobtrusive fire detection and protection measures are now in place and continually upgraded to safeguard the historic mansion, its contents, and its visitors and staff.
Earlier this year, ES reported on the difficulty many engineers have in getting enough information to discern when it makes sense to use a desiccant system, and when it might not. One engineer in particular had found the same trouble gathering data for a supermarket project, so he conducted a comparative study from scratch. Here's what he found.
For Boston's elegant Chilton Club, both the need for an hvac overhaul and the need to preserve its traditional atmosphere were extreme. A pressure-cooker schedule and downtown location made the endeavor all the more difficult. Here's the first of two parts on how the job got done.
The city of Commerce, CA, recently completed work on a $15 million aquatorium/recreational center that promises to serve as the state-of-the-art role model for future metropolitan recreational facilities across the
After experiencing many forced periods of inactivity during hot summer months because it lacked air conditioning, Sacramento City College’s (SCC) 65-year-old North Gym now sports a state-of-the-art, cost-efficient air conditioning
Why was one floor’s laboratory ventilation failing to keep up, when it was even the closest floor to the rooftop fans? Some system sleuthing led two engineers to a fitting conclusion. Read more stories in May Issue 2017.