water vapor pressure

By Bruce Longino In Georgia, Water Source Heat Pumps (WSHP) dominate school system designs. There are many reasons for this. Some of the many positives are: Bruce Longino, PE, LEED AP WSHP per classroom so if a failure occurs only one classroom is affected. WSHPs are very efficient (typical EER of around 14). WSHPs mounted in the hall results in a quiet classroom. With a WSHP system, heat from the interior can heat the perimeter. Read More

By Bruce Longino Don’t “drink the Kool-Aid” phrase came from a great tragedy that occurred November 18, 1978 Jonestown, Guyana. Jim Jones had a cult following of people. His followers were convinced to drink a Kool-Aid like drink laced with cyanide. That day 909 men, women and children perished in a mass suicide. Bruce Longino, PE, LEED AP After that horrible day, the expression “drink the Kool-Aid” is used to describe the behavior of believing… Read More

By Bruce Longino I have written in the past about the benefits of bi-polar ionization units installed in our HVAC systems. Bi-polar means there are positive and negative ions. Ions are atoms or molecules that have one too many electrons [negative] or one too few electrons [positive]. Specifically in the application I am discussing, the water molecule (H2O) is split into a positive hydrogen atom +H and a negative hydroxide molecule –OH (H2O → +H… Read More