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December 20, 2018

Clearing the air on ozone

Many marketed air treatment technologies produce ozone, by-products of ozone and/or other reactive oxygen species (ROS), which have recently come under scrutiny as a source of respiratory irritation and even lung damage.

What to do about that pesky R-22 chiller-Part II

In Part I, which appeared in HPAC October 2018, the various considerations prior to undertaking a chiller conversion were discussed. What follows is a simple (or maybe not so simple) step-by-step procedure for actually converting a R-22 chiller.

Keep heat produced by auxiliary boilers out of thermal storage

It is important the auxiliary boiler operates only when necessary and that heat produced by the auxiliary boiler flows directly to the load.
The Buyers Guide

Boiler winter prep

Step-by-step prep: Preparing condensing boilers for winter

Doing a few simple tasks will ensure that a condensing boiler is prepared for winter, as well as ensuring that it performs efficiently and reliably for many years to come. » Read More
Motion sickness

Study shows virtual reality motion sickness can be predicted, counteracted

Motion sickness is poised to throw a wrench into the seemingly unstoppable rise of virtual reality, including its use among mechanical contractors. » Read More

ASHRAE 2019 Winter Conference

Date: January 12-16
Location: Georgia World Congress Center, Atlanta, GA
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AHR Expo 2019

Date: January 14-16, 2018
Location: Atlanta, GA
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The Kitchen & Bath Industry Show (KBIS)

Date: February 19 - 21, 2018
Location: Las Vegas, NV
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