When troubleshooting commercial refrigeration systems, many times it is necessary to measure the discharge pressure of a system and determine if the pressure is normal, higher than normal, or lower than normal.
Women, just as men, use a blend of logic and feelings to make important decisions. The bottom line is, women inherently trust their feelings (intuition) more than men do. Are you unwittingly sending up red flags to her intuition?
Hinkle Produce Co.'s processing system, which uses chilled water and ice, could have had several more years of operation left - except for concerns about the rising cost of and supply questions about R-502. Because of this, Hinkle looked to its refrigeration contractor for an alternative.
This is the second article dealing with terms that might be confusing to or even misused by service technicians. This article deals with migration and slugging.
If you live in Oklahoma and need a place to learn HVAC, you might consider Autry Technology Center or Moore-Norman Technology Center. These are the only schools in the state that are now nationally accredited through the Partnership for Air-Conditioning, Heating, Refrigeration Accreditation (PAHRA).
"Sound and vibration control is becoming more important in HVAC," says Tim Kuski of Greenheck. "Sound and vibration are very closely related. The relationship between the two has to do with the frequency at which a vibration or pulsation occurs."
Sam's Town Resort & Casino upgraded its HVAC system because the previous filtration system wasn't meeting expectations - the ventilation system couldn't control the humidity and maintain a set point. Also, the owners wanted to be proactive in addressing second-hand smoke exposure.
It's almost impossible to talk about acceptable IAQ in spaces where smoking is allowed, said Larry Schoen, P.E. Schoen only talks about comfort, not health, in relation to facilities where smoking is allowed. Here he lists his top criteria for improving the comfort of a smoking space.
Can a home incorporate the latest technology in energy efficiency, safety, and indoor air quality (IAQ), yet be affordable for low- to moderate-income families? The answer is not just yes, but absolutely, according to Neighbor For Neighbor, a nonprofit organization that is rooted in empowering communities through affordable housing.
Direct digital controls (DDC) are the systems of the future. The easiest way to understand DDC controls is to compare them to pneumatic controls. Most contractors have been around pneumatic systems and are familiar with the components.
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