Browse > Article
http://dx.doi.org/10.15269/JKSOEH.2016.26.3.342

Numerical Study on the Ventilation Performance in the Boiler Building with and without Roof Openings  

Choi, Hoon Ki (School of Mechanical Engineering, Changwon National University)
Yoo, Geun Jong (School of Mechanical Engineering, Changwon National University)
Lee, Sang Heon (Graduate School, Changwon National University)
Publication Information
Journal of Korean Society of Occupational and Environmental Hygiene / v.26, no.3, 2016 , pp. 342-349 More about this Journal
Abstract
Objectives: The objective of this paper is to find flow and heat transfer characteristics numerically in boiler buildings for three different ventilation window configurations. Methods: Turbulent natural convection flow in boiler buildings with a constant heating wall temperature was analyzed numerically. Governing equations were solved with standard finite-volume method using the SIMPLE algorithm. Conclusions: Flow and heat transfer characteristics are found for three different ventilation types. In the lower area under furnace, velocity and temperature distributions show similar patterns among the three different ventilation types. In the upper area over furnace, however, air flow is well mixed with lower peak temperatures for types B and C, which have roof ventilation windows, compared to type A which has side wall louvers only. Also, type B, with a single large roof window, shows better ventilation effect than does type C with its distribution roof windows.
Keywords
boiler building; cooling performance; louver type ventilation; numerical analysis; peak temperature; roof type ventilation;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 Ansys Inc. ANSYS FLUENT User's guide. 2011
2 Betts PL, Bokhari LH. Experiments on turbulent natural convection in an enclosed tall cavity. Int. J. Heat and Fluid Flow 2000;21(6):675-683   DOI
3 Gratia E, Bruyere I, De Herde A. How to use natural ventilation to cool narrow office buildings. Building and Environment 2004;39(10):1157-1170   DOI
4 Kim CH, Yoo GJ, Choi HK. Numerical study on the ventilation effect in the boiler building. J Korean Soc Occup Environ Hyg 2005;15(3):239-249
5 Kim CH, Lee JW, Choi HK, Yoo GJ. Numerical study on ventilation method for temperature control of HRSG building. J Korean Soc Occup Environ Hyg 2009;19(3): 240-249
6 Launder BE, Spalding DB. The Numerical Computation of Turbulent Flows. Computer methods in Applied Mechanics and Engineering 1974;3(2):269-289   DOI
7 Sigey JK, Gathen FK, Kinyanjui. Numerical study of free vonvection turbulent heat transfer in an enclosure. Energy Conversion and Management 2004;45(15-16): 2571-2582   DOI
8 Stavrakakis GM, Koukou MK, Vrachopoulos MGr, Markatos NC. Natural cross-ventilation in buildings: Buildingscale seperiments, numerical simulation and thermal comfort evaluation. Energy and Buildings 2008;40(9): 1666-1681   DOI