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KMID : 1039220160260030342
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Journal of Korean Society of Occupational and Environmental Hygiene
2016 Volume.26 No. 3 p.342 ~ p.349
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Numerical Study on the Ventilation Performance in the Boiler Building with and without Roof Openings
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Choi Hoon-Ki
Yoo Geun-Jong
Lee Sang-Heon
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Abstract
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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.
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KEYWORD
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boiler building, cooling performance, louver type ventilation, numerical analysis, peak temperature, roof type ventilation
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