Volts A new way to retrofit old buildings ... from the outside
Sep 25, 2024
David Goldstein, founder of Hydronic Shell Technologies, shares insights on innovative building retrofitting. He discusses a groundbreaking technology that envelops old multifamily structures in insulated panels with integrated HVAC systems, enhancing energy efficiency without disturbing residents. The conversation highlights challenges faced in New York City regarding regulatory changes and the importance of effective ventilation. Goldstein emphasizes how these upgrades can significantly reduce energy demand and carbon emissions while balancing tradition with innovation.
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Exterior Facade Becomes Integrated HVAC Shell
- Hydronic Shell's FIMS retrofits the exterior with insulated panels that embed HVAC to avoid interior disruption.
- Panels create an airtight new shell, replace windows, and route ducts and pipes in a 4–6 inch cavity behind the facade.
Zone Heat Pumps Balance Size And Distribution
- The system uses medium‑sized zone heat pumps rather than one giant unit or individual room units.
- Typical roof heat pumps serve ~14–25 apartments, easing structural, noise, and distribution issues.
Water And Ventilation Move Through The Facade Cavity
- The system distributes hot/chilled water for thermal transfer and conditioned ventilation air for IAQ through facade cavities.
- Water distribution avoids refrigerant risks on tall buildings while ducts carry tempered fresh air to every room.