Desiccant Dewpoint Cooling System Independent of External Water Sources

Lorenzo Bellemo, Brian Elmegaard, Wiebke B. Markussen, Martin R. Kærn, Lars O. Reinholdt

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Abstract

This paper presents a patent pending technical solution aiming to make desiccant cooling systems independent of external water sources, hence solving problems of water availability, cost and treatment that can decrease the system attractiveness. The solution consists in condensing water from the air that regenerates the desiccant dehumidifier, and using it for running the evaporative coolers in the system. A closed regeneration circuit is used for maximizing the amount of condensed water. This solution is applied to a system with a desiccant wheel dehumidifier and a dew point cooler, termed desiccant dew-point cooling system, for demonstrating its function and applicability. Simulations are carried out for varying outdoor conditions under constant supply conditions. The results show that the system is independent of external water supply for the majority of simulated conditions. In comparison to the desiccant dew-point system without water recovery, the required regeneration temperature increases and the system thermal efficiency decreases.
Original languageEnglish
Title of host publicationProceedings of the 24th IIR International Congress of Refrigeration
Number of pages8
PublisherInternational Institute of Refrigeration
Publication date2015
Publication statusPublished - 2015
Event24th IIR International Congress of Refrigeration: Improving Quality of Life, Preserving the Earth - Yokohama, Japan
Duration: 16 Aug 201522 Aug 2015
Conference number: 24

Conference

Conference24th IIR International Congress of Refrigeration
Number24
CountryJapan
CityYokohama
Period16/08/201522/08/2015

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