Title

Understanding the Dehumidification Performance of Air-Conditioning Equipment at Part-Load Conditions

Secondary Author(s)

Henderson Jr., Hugh; Raustad, Richard

Report Number

FSEC-CR-1537-05

URL

http://publications.energyresearch.ucf.edu/wp-content/uploads/2018/06/FSEC-CR-1537-05.pdf

Keywords

Dehumidification; Buildings; HVAC; Cooling; Humidity; Air Quality

Abstract

Air conditioner cooling coils typically provide both sensible cooling and moisture removal. Data from a limited number of field studies (Khattar et al. 1985; Henderson and Rengarajan 1996; Henderson 1998) have demonstrated that the moisture removal capacity of a cooling coil degrades at part-load conditions - especially when the supply fan operates continuously while the cooling coil cycles on and off. Degradation occurs because moisture that condenses on the coil surfaces during the cooling cycle evaporates back into air stream when the coil is off. This degradation affects the ability of cooling equipment to maintain proper indoor humidity levels and may negatively impact indoor air quality.

Date Published

1-1-2006

Subjects

Buildings - Air Quality; Buildings - Cooling; Buildings - Dehumidification; Humidity; Buildings - HVAC

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