JOURNAL BROWSE
Search
Advanced SearchSearch Tips
Experimental Study on Air Diffusion Performance and Local Discomfort in the Space with an Active Chilled Beam System
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
 Title & Authors
Experimental Study on Air Diffusion Performance and Local Discomfort in the Space with an Active Chilled Beam System
Rhee, Kyu-Nam; Choi, Sun-Ho;
 
 Abstract
Active chilled beam systems, which have been gaining much popularity recently in Europe and North America, are known to be not only energy-efficient but also advantageous to uniform indoor environment quality. The objective of this study is to evaluate the performance of an active chilled beam system, in terms of air diffusion and local discomfort in the conditioned room. To do this, the evaluation was conducted using a full-scale test bed, where an active chilled beam system is designed and operated with a dedicated outdoor air system. A 2-axis traverse system was utilized to measure the air temperature and air velocity in the entire space of the test bed. The performance was evaluated using the three indices: ADPI to evaluate the uniform thermal comfort, DR(draught rate) to evaluate the discomfort due to excessive air movement, and vertical air temperature difference to evaluate local discomfort due to thermal stratification. The result shows that active chilled beam system is successful in providing the uniform indoor thermal environment with less supply air flow rate.
 Keywords
Active Chilled Beam System;Thermal Environment;Air Diffusion Performance;Draught;Vertical Air Temperature Difference;
 Language
Korean
 Cited by
1.
설비형 칠드빔 시스템 및 일반 공조 시스템 적용 공간의 온열환경 균일도 비교 평가,이규남;최선호;김창훈;

대한건축학회논문집:계획계, 2014. vol.30. 10, pp.199-206 crossref(new window)
1.
Comparative Evaluation of the Thermal Uniformity in a Space with Active Chilled Beam and Conventional Air Conditioning Systems, Journal of the architectural institute of Korea planning & design, 2014, 30, 10, 199  crossref(new windwow)
 References
1.
김지석, 주상현, 김정엽, 신현준, Chilled Beam System의 유인 구조해석 연구, 대한설비공학회 하계학술발표대회 논문집, 2012

2.
ASHRAE, ASHRAE Handbook Fundamental, 2009

3.
ASHRAE, "Thermal Environmental Conditions for Human Occupancy", ANSI/ASHRAE Standard 55, 2010

4.
Alexander, D and O'Rourke, "Design Considerations for Active Chilled Beams", ASHRAE Journal v.50, 2008

5.
Devlin, N. "Validation of an active chilled beam design for a healthcare facility", 12th conference of international building performance simulation association, 2011

6.
Fredriksson, J., Sandberg, M. and Moshfegh, B. "Experimental investigation of the velocity field and airflow pattern generated by cooling ceiling beams". Building and Environment 2001; 36: 891-899 crossref(new window)

7.
ISO, ISO7730:2005, Ergonomics of the thermal environment -Analytical determination and interpretation of thermal comfort using calculation of the PMV and PPD indices and local thermal comfort criteria, 2005

8.
John, D. "Designing Air-distribution Systems to Maximize Comfort", ASHRAE Journal v., 2012

9.
Kosonen, R and Tan, F, "A feasibility study of a ventilated beam system in the hot and humid climate: a case-study appraoch", Building and Environment, v.40, 2005

10.
Koskela, H., Haeggblom, H., Kosonen, R. and Ruponen, M. "Air distribution in office environment with asymmetric workstation layout using chilled beams", Building and Environment, v.40, 2010

11.
Loudermilk, K and Alexander, D, "Efficient Space Humidity Control with Active Chilled Beam Systems", ASHRAE Journal v.54, 2012

12.
Loudermilk, K, "Designing Chilled Beams for Thermal Comfort", ASHRAE Journal v.51, 2009

13.
Roth, K., and Zogg, R. "Chilled Beam Cooling", ASHRAE Journal, Sep. 2007

14.
True, J., Zboril, V., Kosonen, R. and Melikov, A. "Consideration for minimising draught discomfort in rooms with active chilled beams, Proceedings of Clima 2007 Wellbeing Indoors, 2007

15.
Virta, M., Butler, D., Graeslund, J., Hogeling, J., Kristiansen, E., Reinikainen, M. and Svensson, G. Chilled Beam Application Guidebook, REHVA Guidebook No.5, 2004