For Engineers · Technical Resources

TRICOIL® White Papers

Engineering documentation on the TRICOIL® recuperative dehumidification method — from the general technical background, to a complete 100% outdoor-air DOAS design example, to reset-schedule dehumidification control for VAV reheat systems. Every paper below is a free PDF download.

Updated Sept 2026 Sensible Equipment Company & Eiermann Engineering
TRICOIL® General Background Information

The place to start: how the three-coil recuperative loop works, why it isn't simply heat recovery, sizing the primary cooling plant, the combination-coil option, step-by-step operation, a worked energy-savings example, and where TRICOIL® is applied.

10 sections · 6 pages · PDF
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New Designed by Eiermann Engineering · August 31, 2026
TRICOIL® Recuperative DOAS

A complete 10,000 CFM, 100% outdoor-air design example at the ASHRAE 1% Enthalpy/MCDB condition for Kansas City Intl. — coil selections confirmed by certified manufacturer selection software (Coil Company EZ-Coil), a ≈22% reduction in required chiller capacity, zero external reheat at design condition, and a full winter operating-mode analysis.

10 sections · 8 pages · PDF
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New Sensible Equipment Company · September 2026
TRICOIL® Variable Air Volume Application

Reset-schedule dehumidification control for VAV reheat systems, holding room latent cooling capacity constant across 100%–50% airflow turndown with a single recuperative run-around loop. Updates and independently re-verifies a 2003 technical bulletin, with a full worked example and an actual classroom coil selection.

10 sections · 8 pages · PDF
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Want to model your own conditions?

Try the interactive psychrometric chart, or download the annotated chart with a sample calculation.

⛶ Open Interactive Chart ⬇ Download Chart (PDF)

TRICOIL® is protected by United States Patent Nos. 5,181,552 · 5,225,302 · 5,337,577. TRICOIL is a registered trademark of Sensible Equipment Company, Inc. Unauthorized use or reproduction is prohibited. Additional US and foreign patents may apply.