Liquid desiccant latent load handling simulation for building HVAC applications with a DOAS module

Forrest Meggers, Eric Teitelbaum, Jovan Pantelic, Adam Rysanek, Hongshan Guo

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Liquid desiccant dehumidification represents a promising research avenue for HVAC applications. This research presents a case study exploring a novel membrane desiccant absorber that we have characterized extensively at the bench scale in previous work, and in this study we present the simulation to consider the feasibility of scaling up the system to building room scale in terms of pumping costs and air mass exchanger fan cost. As part of an ongoing research pilot building project in Singapore, the simulation examines scaling up the liquid desiccant system to match the loading observed in the solid desiccant wheel in a dedicated outdoor air supply (DOAS) unit in hot and humid Singapore conditions. The liquid desiccant dehumidification system is composed of a novel combination of hydrophilic alkoxylated siloxane liquid desiccant and nonporous, vapour permeable Pebax® membrane. Such a configuration allows cooling with off-coil dehumidification, reducing the need to "over-cool" beyond the dewpoint, saving 40.0% - 61.6% in cooling energy. The corresponding liquid desiccant system would require a 66 x 66 tube array of shell-in-tube style minicontactors.

Original languageEnglish (US)
Title of host publication15th International Conference of the International Building Performance Simulation Association, Building Simulation 2017
EditorsCharles S. Barnaby, Michael Wetter
PublisherInternational Building Performance Simulation Association
Pages1407-1411
Number of pages5
ISBN (Electronic)9781510870673
DOIs
StatePublished - 2017
Event15th International Conference of the International Building Performance Simulation Association, Building Simulation 2017 - San Francisco, United States
Duration: Aug 7 2017Aug 9 2017

Publication series

NameBuilding Simulation Conference Proceedings
Volume3
ISSN (Print)2522-2708

Conference

Conference15th International Conference of the International Building Performance Simulation Association, Building Simulation 2017
Country/TerritoryUnited States
CitySan Francisco
Period8/7/178/9/17

All Science Journal Classification (ASJC) codes

  • Building and Construction
  • Architecture
  • Modeling and Simulation
  • Computer Science Applications

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