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One Engineer’s Opinion: Why You Should Use Product-Integrated Direct Digital Controls

The product integrated controls that I am speaking of are Direct Digital Controls that are factory-installed in HVAC equipment. One of the major benefits of DDC Controls is that they can be monitored from computers or smart phones. Bruce Longino, PE, LEED AP Many years ago, building owners hesitated to specify product integrated controls because they were proprietary. The manufacturer of the HVAC equipment could charge what they wanted and the owner was stuck. However,… Read More

One Engineer’s Opinion: Good Indoor Air Quality Is Necessary Even After the Pandemic

By Bruce Longino During this pandemic, IAQ became the topic of many conversations. Hopefully this COVID-19 pandemic will end when the world has enough people that are vaccinated that we achieve “herd immunity.” Bruce Longino, PE, LEED AP Herd immunity (also called herd effect, community immunity, or population immunity) is a form of indirect protection from infectious disease that can occur with some diseases when a sufficient percentage of a population has become immune to… Read More

One Engineer’s Opinion: COVID-19 Has Totally Disrupted Our Lives

By Bruce Longino My wife and I have been “sheltered in place” for 74 days. It is a good thing I love being around her. Before this pandemic began I would have considered my life as “Heaven on Earth.” Bruce Longino, PE, LEED AP We were going the soccer games and baseball games watching our Grandchildren compete. Sometimes winning and sometime losing. Our extended family used these events to get together. Then on most Sundays… Read More

One Engineer’s Opinion: Should We Treat Chickens as Well as We Do Our Kids?

By Bruce Longino You have read how important I believe it is to use Needlepoint Bi-Polar Ionization (NBPI) to provide a healthy environment for children in school and at home. This is especially true during flu season. To emphasize the importance of this, many school systems around the country keep students away from the classroom to stop the spread of the flu. However, to my knowledge no schools in Georgia resort to this drastic measure. Read More

Make Sure You are Getting the Ions You Paid For!

By W. Bruce Longino, P.E., LEED AP Needlepoint Bi-polar ionization (NBPI) has become a major way to clean the air in commercial and residential facilities. NBPI generators split H2O molecules into positive and negative ions. Bruce Longino, PE, LEED AP NBPI has become one of the most popular ways to provide good Indoor Air Quality. The ions treat the air and provide the following benefits: Reducing particles in the air. The positive and negative ions… Read More

One Engineer’s Opinion: New Rooftop Design Could Make It Comparable to WSHP for Schools

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