Best Air Velocity Over Coils
Best Air Velocity Over Coils: Fan-Coils (Residential) and Air Handling Units (AHUs) 1. Introduction To achieve optimal heat transfer and minimize noise, the air velocity over coils must balance thermal performance with pressure drop and acoustic considerations. Below are recommended values and rationale, organized by application. 2. Residential Fan-Coils — Recommended Range • Air velocity: 300–500 feet per minute (fpm) over the coil face area provides the best balance. • Rationale: In this range the convective heat transfer coefficient (h) increases significantly compared to very...
