NDLI: Optimization of a liquid desiccant based dedicated outdoor air-chilled ceiling system serving multi-zone spaces

Content Provider	Springer Nature Link
Author	Ge, Gaoming Xiao, Fu Wang, Shengwei
Copyright Year	2012
Abstract	A liquid desiccant based dedicated outdoor air-chilled ceiling (DOAS-CC) system is proposed to serve a multi-zone space. The outdoor airflow rate and the supply air humidity ratio are two crucial variables in such a system, which significantly influence indoor thermal comfort, indoor air quality and energy consumption. Two strategies are presented to optimize these two variables in the study. They are the demand-controlled ventilation (DCV) strategy and the supply air humidity ratio set-point reset strategy. To evaluate the performances of these two strategies, a basic control strategy, i.e., the strategy adopting constant ventilation flow rate and constant supply air humidity ratio, is selected as the benchmark. Performances of the two strategies in terms of indoor air temperature, relative humidity and CO$_{2}$ concentration as well as energy consumption are analyzed using simulation tests. The results show that the supply air humidity ratio set-point reset strategy is effective for the indoor air humidity control. It can save about 19.4% of total energy consumption during the whole year. The DCV-based ventilation strategy can further reduce about 10.0% of energy consumption.
Starting Page	257
Ending Page	266
Page Count	10
File Format	PDF
ISSN	19963599
Journal	Building Simulation
Volume Number	5
Issue Number	3
e-ISSN	19968744
Language	English
Publisher	Tsinghua Press
Publisher Date	2012-05-25
Publisher Place	Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	dedicated outdoor air system chilled ceiling liquid desiccant building energy efficiency multi-zone space Environmental Monitoring/Analysis Atmospheric Protection/Air Quality Control/Air Pollution Engineering Thermodynamics, Heat and Mass Transfer Building Construction
Content Type	Text
Resource Type	Article
Subject	Building and Construction Energy

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