Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/14533
Title: Thermal, ventilation and energy saving performance evaluations of a ductless bed-based task/ambient air conditioning (TAC) system
Authors: Mao, N
Pan, D
Deng, S 
Chan, M 
Keywords: Energy saving
Relative humidity
Task/ambient air conditioning (TAC) system
Thermal comfort
Ventilation performance
Issue Date: 2013
Publisher: Elsevier
Source: Energy and buildings, 2013, v. 66, p. 297-305 How to cite?
Journal: Energy and buildings 
Abstract: To provide better indoor thermal comfort and indoor air quality in sleeping environments and to achieve greater energy saving, it is necessary to develop new air conditioning systems applied to sleeping environments. In recent years, a large number of studies have been carried out on the task/ambient air conditioning (TAC). To address a number of the inadequacies in a previous related study for a novel bed-based TAC system for sleeping environments, a ductless bed-based TAC system has been developed and its thermal, ventilation and energy saving performances have been experimentally evaluated, by comparing them with those of a full volume air conditioning (FAC) system. Firstly, an experimental setup at two different settings, a ductless bed-based TAC setting and a FAC setting, is presented. Secondly, the methods for measuring air dry-bulb and wet-bulb temperatures, air velocity and CO2 concentrations are reported and six groups of experimental conditions detailed. Finally, experimental results of thermal, ventilation and energy saving performances at the two settings are presented and analyzed. The experimental results demonstrated that using the ductless bed-based TAC could lead to a better ventilation performance and energy saving performance, but a poor thermal performance in terms of a higher draft risk than using the FAC system. It was possible to reduce the draft risk, while still maintaining an acceptable energy saving performance, by selecting a proper supply air temperature and air flow rate as well as a proper supply vane angle.
URI: http://hdl.handle.net/10397/14533
ISSN: 0378-7788
EISSN: 1872-6178
DOI: 10.1016/j.enbuild.2013.07.010
Appears in Collections:Journal/Magazine Article

Access
View full-text via PolyU eLinks SFX Query
Show full item record

SCOPUSTM   
Citations

16
Last Week
1
Last month
1
Citations as of Aug 14, 2017

WEB OF SCIENCETM
Citations

11
Last Week
0
Last month
Citations as of Aug 13, 2017

Page view(s)

38
Last Week
1
Last month
Checked on Aug 13, 2017

Google ScholarTM

Check

Altmetric



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.