It’s been a while since this column addressed solar thermal applications. 

The United States has an infrastructure problem. We have crumbling roads and railways, neglected public transit, and ports and airports in dire need of upgrades, not to mention the critical repairs needed for water and wastewater systems. 

In 1921, Chetwood Smith had this to say in the American Water Works Association Journal, “I have seen over 35 explosions from overheating water. 

One of the most fundamental principles used in all areas of science and engineering is the first law of thermodynamics. 

Today’s zone controls have come a long way from the days when controls were literally “relays on a board.” 

Contractor Aron Frailey estimates he has installed as many as one thousand radiant snow-melt projects since entering the business right out of college nearly 20 years ago. 

Before I retired in 2016, I’d get a lot of calls from lawyers who wanted to hire me to be an expert witness at a trial. 

Last month, we discussed using a non-pressurized thermal storage tank, in combination with brazed plate heat exchangers in a system supplied by a cordwood gasification boiler. 

When specifying and designing a high-efficiency boiler system, much attention is often given to the published efficiency ratings of units. 

In 2003, I had the opportunity to attend ISH in Frankfurt, Germany.