Coil Performance Calculator
The Coil Performance Calculator provides a simplified estimation of the sensible and latent heat transfer occurring in an HVAC coil (e.g., evaporator or condenser). It typically uses inputs such as airflow rate (CFM), entering and leaving air dry bulb temperatures for sensible heat, and optionally, entering and leaving air wet bulb temperatures for a rough estimate of latent heat. Understanding coil performance is vital for assessing system capacity and efficiency. This tool uses standard approximate formulas for sensible heat (Qs = 1.08 × CFM × ΔT_DB) and a highly simplified approach for latent heat.
Sensible vs. Latent Heat: HVAC coils transfer two types of heat. Sensible heat causes a change in air temperature without changing its moisture content. Latent heat is associated with a change in moisture content (e.g., condensation) at a constant temperature. Total heat transfer is the sum of sensible and latent heat. The Sensible Heat Ratio (SHR) indicates the proportion of sensible cooling to total cooling.
This calculator provides a simplified sensible heat calculation and a VERY ROUGH placeholder for latent heat. Accurate coil performance analysis requires full psychrometric calculations using humidity ratios or enthalpies (from a psychrometric chart or software) and specific coil manufacturer data (e.g., performance charts, SHR). This tool is for educational purposes and preliminary estimation only.