Zehnder Integrated Radiant Metal Ceiling Solutions (Heating and Cooling Ceiling Systems) Catalog

Read from local Zotero full-text PDF (group 5183627 / Joule Heist).

Key findings

• Hydronic radiant heating-and-cooling ceiling panels deliver high cooling via a large radiant surface; benefits cited: high cooling/heating output, short reaction time to temperature change, and high radiant fraction. Targeted at offices, schools, hospitals, and public buildings.
• Panels are galvanized sheet-steel metal cassettes activated by a meandering copper pipe (“D-tube” shape increases contact/transfer area) plus a heat-conduction spreader; two activation technologies: Alumline (aluminum heat-conducting profile) and Carboline (expanded natural graphite sandwich) for fast, even temperature distribution.
• Operating limits from the technical-data tables: max operating temperature 181 °F (~83 °C) for both graphite and aluminum activation, max operating pressure 87 psi (6 bar), typical tube spacing min ~3.54 in.
• Four suspended closed-ceiling systems plus ceiling sails: C-Channel (max panel 78.74 x 51.18 in, up to 16.14 ft²/panel), Clip-in (max 8.61 ft²), Hook-on (max 18.29 ft²), and Lay-in (23.62 in grid, up to 21.53 ft², copper-pipe-and-aluminum or graphite activation). Lay-in long modules can cut installation cost up to 80% vs. conventional systems.
• The D-pipe/D-tube geometry yields higher and more even surface temperature for the same flow temperature and mass flow than a round tube (thermography: D-tube mean 121.1 °F vs round-tube 117.5 °F), enabling cooling/heating at low flow-temperature differentials with energy savings.
• Graphite (Carboline) activation distributes heat faster and more evenly than standard panels at the same flow temperature and mass flow, with extremely short system response time — favorable for chilled-ceiling control comfort.
• Panels double as acoustic absorbers (perforated versions, sound absorption coefficient αs = 0.55-0.95) and can integrate lights, air outlets, smoke detectors, and projector brackets.
• Both connection pipes are on the same panel end for fast install; full custom service (advice, planning, production, install, commissioning) with a five-year material/workmanship warranty (Zehnder Rittling, Buffalo NY).
• NOTE: Vendor catalog, but it provides concrete hydronic chilled-ceiling distribution specs (operating temperatures, pressures, panel sizing, activation methods) directly relevant to cooling distribution.