Cosorption processes of triethylene glycol in a packed bed liquid desiccant dehumidifier

Chi Kwan Chau, W. M. Worek

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

The cosorption characteristics of water and toluene vapors in various concentrations of triethylene glycol solution flowing through a packed-bed dehumidifier are investigated. A multicomponent model is constructed using the reported equilibrium relationships of toluene and water vapors in triethylene glycol solutions together with the Krishna-Standart multicomponent mass transfer correlation. The results show that running the packed dehumidifier in a higher liquid-to-gas flow ratio can increase removal efficiencies of both water vapor and toluene vapor from the air stream. Further analysis reveals that increasing the triethylene glycol solution inlet temperatures can lead to a decreasement in the removal efficiency of water vapor when running the packed dehumidifier at a high liquid-to-gas flow ratio. However, there is no significant change in the toluene vapor removal efficiency when the inlet triethylene glycol solution flow rate is increased. This shows that negligible molecular interaction occurs between toluene vapor and water vapor during the absorption process in packed dehumidifier. This enables the use of a liquid desiccant triethylene glycol dehumidifier for indoor air quality control.
Original languageEnglish
Title of host publicationProceedings of the 2003 - 4th International Symposium on Heating, Ventilating and Airconditioning
Pages1021-1036
Number of pages16
Publication statusPublished - 1 Dec 2003
Externally publishedYes
EventProceeding of the 2003 4th International Symposium on Heating, Ventilating and Air Conditioning - Beijing, China
Duration: 9 Oct 200311 Oct 2003

Conference

ConferenceProceeding of the 2003 4th International Symposium on Heating, Ventilating and Air Conditioning
CountryChina
CityBeijing
Period9/10/0311/10/03

ASJC Scopus subject areas

  • Engineering(all)

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