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Archives
Cleaning Plate and Frame Heat Exchangers
Posted by Bob Schneider on in Engineering
Central Plants may utilize plate and frame heat exchangers for “free cooling” or other types of heat transfer. Maintenance of your plate and frame heat exchanger should be part of your scheduled service program. The plate exchanger, shown below, consists of corrugated plates assembled into a frame. The hot fluid flows in one direction in […]
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Double the Boiler Size and Fire the Engineer?
Posted by Dan Jackson on in Engineering
That’s an old HVAC engineer joke. Often when we’re asked to evaluate comfort problems, we find this was more than just a joke. A building’s cooling load is the rate of heat rejection required to keep it cool inside. Conversely, the heating load is the amount of added heat needed to keep it warm inside. […]
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Choose the Right Replacement Boiler
Posted by Joe Weagraff on in Engineering
Your boiler needs to be replaced. It’s old and inefficient and your natural gas costs are sky rocketing. What type of replacement boilers should you look at? There are condensing, non condensing, steel or copper water tube or fire tube, to name a few, and efficiencies range from 75% to 96%. You will need to […]
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MEP Engineering Considerations for Alterations to Existing Walls, Roofs and Windows
Posted by Joe Weagraff on in Engineering
The two questions most often raised regarding the thermal performance of changes to existing walls, roofs and windows are: We’d like to add insulation to the building, but if we do, does it have to meet code? If a window or storefront is being replaced, can we just match the existing so the look remains […]
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Central Air Adds LEED Points
Posted by Bob Schneider on in Energy Solutions
Developers are showing increasing interest in central air conditioning for many reasons. Ideally suited for multi, multi-use dense, vertical developments, central air conditioning reduces energy use by 30–50%, helps earn LEED points, eliminates rooftop condenser “farms” that preclude green roof options and become maintenance nightmares, and generates revenue. Central air conditioning systems have smaller footprints […]
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