A Tennessee district faced an old school HVAC challenge: aging ventilators and space constraints. So this team tried a new-school variation on common VRF retrofits to deliver improved efficiency and critical IAQ: they decentralized the outdoor air, combining enthalpy wheel and VRF components within a single classroom enclosure.
Providing guests with an enjoyable and comfortable stay is of utmost importance to staff at the Saucon Valley Country Club in Bethlehem, PA. Using Weil-McLain® boilers to upgrade the heating system at the club’s Weyhill Guest House helped ensure that guests experienced a “home away from home.”
Authors Note: I want to thank Paul Ehrlich for his years of dedication to this column, and I am excited to be able to provide readers with my building automation thoughts, insights, etc., on a monthly basis.
How often does an existing closed loop hot water heating or chilled water cooling system get reused as part of a building renovation project, and/or used to expand the area served by the system coverage to provide additional heating or air conditioning?
Why do ground loops in moist soils sometimes perform better than expected? What ground loop design tactics can address building system imbalance? Engineers need to take more responsibility for their full GSHP designs, and these questions are a good place to start.
With a little guidance on ground-source heat pump design temperatures and a few rules of thumb for ground loop flow rates, most engineers are pretty comfortable designing the building side of a ground-source heat pump (GSHP) system.
The timing was perfect. First morning, first keynote, Dr. Jim Freihaut of the Greater Philadelphia Innovation Cluster for Energy-Efficient Buildings, has been talking to our High-Performance Buildings conference about the great work going on at the renewed Philadelphia Navy Yard. But now he’s also lamenting the state of facility O&M staff.
From a missing pipe hanger three floors down to steam traps past their prime, these stories show how steam system problems can originate inside the boiler room or far beyond it. Read more in February issue.