Which cooling coil configuration is selected for maximum dehumidification?

The selection of a cooling coil configuration for maximum dehumidification is influenced by both the number of rows and the airflow velocity through the coil. An 8-row low velocity coil is optimal for enhancing dehumidification because the reduced air speed allows for a longer contact time between the air and the cooling surface. This extended contact time enables more moisture to condense out of the air, effectively lowering humidity levels within the conditioned space.

In contrast, higher velocity coils, while promoting better cooling of the air, may not adequately remove moisture due to the shorter exposure time. Furthermore, while an increasing number of rows contributes to more surface area for cooling, balancing the airflow and moisture removal is essential. Therefore, the combination of an 8-row configuration with low airflow velocity is especially effective in maximizing dehumidification. Hence, this configuration stands out as the preferred choice for achieving optimal humidity control in air conditioning systems.