Effect of relative humidity and temperature control on in-cabin thermal comfort state

Thermodynamic and psychometric analyses

A. Alahmer, M. A. Omar, Abdel Mayyas, Shan Dongri

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

This manuscript discusses the effect of manipulating the Relative Humidity RH of in-cabin environment on the thermal comfort and human occupants' thermal sensation. The study uses thermodynamic and psychometric analyses, to incorporate the effect of changing RH along with the dry bulb temperature on human comfort. Specifically, the study computes the effect of changing the relative humidity on the amount of heat rejected from the passenger compartment and the effect of relative humidity on occupants comfort zone. A practical system implementation is also discussed in terms of an evaporative cooler design. The results show that changing the RH along with dry bulb temperature inside vehicular cabins can improve the air conditioning efficiency by reducing the heat removed while improving the Human comfort sensations as measured by the Predicted Mean Value PMV and the Predicted Percentage Dissatisfied PPD indices.

Original languageEnglish (US)
Pages (from-to)2636-2644
Number of pages9
JournalApplied Thermal Engineering
Volume31
Issue number14-15
DOIs
StatePublished - Oct 2011
Externally publishedYes

Fingerprint

Humidity control
Thermal comfort
Temperature control
Atmospheric humidity
Thermodynamics
Air conditioning
Temperature
Hot Temperature

Keywords

  • Evaporative cooler
  • Human comfort
  • PMV
  • PPD
  • Relative humidity
  • Vehicular air conditioning

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Industrial and Manufacturing Engineering

Cite this

Effect of relative humidity and temperature control on in-cabin thermal comfort state : Thermodynamic and psychometric analyses. / Alahmer, A.; Omar, M. A.; Mayyas, Abdel; Dongri, Shan.

In: Applied Thermal Engineering, Vol. 31, No. 14-15, 10.2011, p. 2636-2644.

Research output: Contribution to journalArticle

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