Welty is a specialist in airborne and infectious diseases and HVAC energy efficiency and president of Green Clean Air (Reston, VA). He uses computer modeling to design airborne infection control systems using UV light and MERV filters. Reach him by e-mail at steve@GreenCleanAir.com.
The author describes how toilet flushes
aerosolize germs sending them airborne to soar around and infect their next
victim(s) because bathrooms are designed backwards. Learn novel ways to control
and clean bathroom air to help control airborne disease transmission problems.
So feel free to hold your nose as you learn about how you can help protect
people’s health within your client’s buildings.
Whether your client has a school or office building, desiccant dehumidification can successfully control the project’s humidity, save energy, and remove pollutants. This primer empowers you to teach your clients how desiccants work, while other tips and applications can help your future projects more than make the grade.
their dry counterparts are an HVAC industry standard, liquid
desiccant dehumidification (LDD) systems have been common only in
industrial applications. Small units have produced very impressive
EER and COP results, yet only a handful are installed in commercial
applications. While companies touting their “new” LDD systems
have come and gone, there’s a new generation of LDD commercial
technologies in town. How will these “new and improved” LDD
systems perform in terms of humidity control, energy, IAQ, and
occupant health and comfort? Is now finally the time when they can
revolutionize both humidity control and heat recovery to become the
new, healthy, energy efficiency magic potion?
the author knows that’s not what the college recruiting brochures
said back when you attended your bastion of higher learning, but that
may change very soon. There is enough solid science available to back
up the claims that controlling IAQ can, in fact, save lives. We focus
on the airborne germ du
jour - influenza - in order to illustrate how your
decisions on controlling the indoor air in your clients’ buildings
can be critical to health and life preservation.
you were a mold spore, your mantra might be, “Surface moisture: can
live with it, can’t live without it.” If you were a bacteria or
virus, it would be just the opposite - they love low-humidity
ambient conditions. Read on for insights into condensate prevention
on cooler surfaces, hospital humidification standards here and
abroad, and avoiding a recipe for mold soup.
A few circumstances in a data center make it ripe for a CHP design to boost efficiency. Let’s get into the options within both relevant chiller types, why payback may be shorter than expected, and the assorted potential benefits from lower costs to higher reliability. Some tips from an array of manufacturers’ reps round out this useful investigation.