THERMAL SCIENCE
International Scientific Journal
A CFD ANALYSIS OF ROOM ASPECT RATIO ON THE EFFECT OF BUOYANCY AND ROOM AIR FLOW
ABSTRACT
Comfort conditions in air-conditioned rooms require that temperature in the occupied zone should not vary by more than 1°C and velocity, every where in the room, should be less than 0.15 m/s so that occupants do not feel draft. Recent developments in providing effective insulation and making leak tight buildings are considerably reduced the cooling load requirements and the supply airflow rates. Obtaining uniform temperature distribution with reduced air volume flow rates requires careful design of air distribution system. This study aims to find velocity and temperature distribution in the room towards this end.
KEYWORDS
PAPER SUBMITTED: 2006-10-24
PAPER REVISED: 2007-03-05
PAPER ACCEPTED: 2007-10-19
THERMAL SCIENCE YEAR
2007, VOLUME
11, ISSUE
Issue 4, PAGES [79 - 94]
- Terai, T., Indoor Thermal Convection, Transaction of Architectural Institution of Japan (in Japanese), l (1959), 4, pp. 63-78
- Tsuchiya, T., Application of Meteorological Numerical Calculation Method to Indoor Airflows, Transaction of Architectural Institution of Japan (in Japanese), 4 (1973), 2, pp. 172-187
- Nomura, T., Kaizuka, M., Numerical Calculation Method of Air Distribution, Transaction of Architectural Institution of Japan (in Japanese), 4 (1973), 3, pp. 31-39
- Yamazaki, H., Urano, Y., Nashida, M., Watanabe, T., Comparison of Numerical Calculation and Visualization Experiments of Two-Dimensional Flows, Transaction of Architectural Institution of Japan (in Japanese), 6 (1976), 3, pp. 240-248
- Hsu, T. H., Hsu, P. T., How, S. P., Mixed Convection in a Partially Divided Rectangular Enclosure, Numerical Heat Transfer, Part A, 31 (1997), 6, pp. 655-683
- Lee, S. C., Cheng, C. Y., Chen, C. K., Finite Element Solutions of Laminar and Turbulent Flows with Forced and Mixed Convection in an Air-Cooled Room, Numerical Heat Transfer, Part A, 31 (1997), 5, pp. 529-550
- Edward, A., Tengfang, X., Katsuhiro, M., Zhang, H., Fountain, M., Bauman, F., A Study of Occupant Cooling by Personally Controlled Air Movement", Energy and Building, 27 (1998), 1, pp. 45-59
- Sherman, M., Indoor Air Quality for Residential Buildings, ASHRAE Journal, 27 (1999), 5, pp. 26-30
- Srebric, J., Chen, Q., Glickman, L. R., A Coupled Airflow and Energy Simulation Program for Indoor Thermal Environmental Studied, ASHRAE Transactions, Part I, 106 (2000), 1, pp. 465-476
- Costa, J. J., Oliveira, L. A., Blay, D., Turbulent Airflow in a Room with a Two-Jet Heating-Ventilation System - A Numerical Study, Energy and Building, 32 (2000), 3, pp.327-343
- Sinha, S. L., Behavior of Inclined Jet on Room Cooling, Building and Environment, 36 (2001), 5, pp. 569-578
- Gobeau, N., Saunders, C. J., Computational Fluid Dynamics (CFD) Validation of the Prediction of Pesticide Dispersion in a Naturally-Ventilated Building, Proceedings, 8th International Conference Air Distribution in Rooms, Roomvent 2002, Copenhagen, pp. 697-700
- Yi, J., Qingyan, C., Buoyancy-Driven Single-Sided Natural Ventilation in Buildings with Large Openings, International Journal of Heat and Mass Transfer, 46 (2003), 6, pp. 973-988
- Catalin, T., Raluca, H., Gilles, R., Monika, W., Numerical Prediction of Indoor Air Humidity and Its Effect on Indoor Environment, Building and Environment, 38 (2003), 5, pp. 655-664
- Eftekhari, M. M., Marjanovic, L. D., Application of Fuzzy Control in Naturally Ventilated Buildings for Summer Conditions, Energy and Buildings, 35 (2003), 7, pp. 645-655
- Andersen, Karl T., Theory for Natural Ventilation by Thermal Buoyancy in One Zone with Uniform Temperature, Building and Environment, 38 (2003), 11, pp. 1281-1289
- Bin, Z., Xianting, L., Qisen, Y., A Simplified System for Indoor Airflow Simulation, Building and Environment, 38 (2003), 4, pp. 543-552
- Patankar, S. V., Numerical Heat Transfer and Fluid Flow, Hemisphere Publ. Comp., Washington DC, USA, 1980
- Doormaal, Van J. P., Raithby, G. D., Enhancement of the SIMPLE Method for Predicting Incompressible Fluid Flow, Numerical Heat Transfer, 17 (1984), 1, pp. 147-163
- Nielsen, P. V., Specification of a Two-Dimensional Test Case, Energy Conservation in Buildings and Community Systems, Annex 20: Air Flow Pattern within Buildings, International Energy Agency, 1990