NUMERICAL INVESTIGATION OF NATURAL VENTILATION IN A ROOM THAT INTEGRATED WITH SOLAR CHIMNEY OF METAL FOAM ABSORBER

Authors:

Suhaib J. Shbailat,Mohammed A. Nima,

DOI NO:

https://doi.org/10.26782/jmcms.2020.05.00024

Keywords:

Solar Chimney,Low-Energy House,Ventilation,Metal Foam,Porous Media,ANSYS FLUENT,

Abstract

In this paper, Numerical investigation of the influence of inserting the metal foam to the solar chimney to induce natural ventilation in the test room is analyzed in this work. Two types of solar chimneys which without insertion of metal foam absorber and with insertion of metal foam absorber are designed with dimensions of length× width× air gap (2 m× 1 m×0.3 m) and size of the test room (1.5 m× 1.5 m×1 m). Four incline angles are tested (30o,45o,60o,90o) for each chimney and two length of tower inlet (30 cm, 40 cm). ANSYS FLUENT program (version 14.5) used to simulate this model and solve the governing equations by finite volume technique. The results showed that the air flow velocity at the outlet of ventilation solar chimney increases of the model with copper foam absorber about 33% from the model without copper foam absorber at constant inclination angle, therefore this gives indication of the important of insertion the copper foam as an absorber media in the ventilation solar chimney.

Refference:

I. Abdallah, AmrSayed Hassan, et al. “Integration of evaporative cooling technique with solar chimney to improve indoor thermal environment in the New Assiut City, Egypt.” International Journal of Energy and Environmental Engineering 4.1 (2013): 45.‏
II. Aboulnaga, Mohsen M. “A roof solar chimney assisted by cooling cavity for natural ventilation in buildings in hot arid climates: an energy conservation approach in Al-Ain city.” Renewable Energy 14.1-4 (1998).
III. Ali Ghaffari and RaminMehdipour. Modeling and Improving thePerformance of Cabinet Solar Dryer Using Computational Fluid Dynamics.Int. J. Food Eng. 2015; 11(2): 157–172
IV. Ali, S.A.G. Study the effect of upstream riblet on wing- wall junction.M.Sc, Thesis, University of Technology, Iraq. 2011.
V. Bansal, N.K, R. Mathur, M.S. Bhandari,” A Study of Solar Chimney Assisted Wind Tower System for Natural Ventilation in Buildings”. Building and Environment, Vol. 29, 4, Pergamon Press., pp. 495-500, (1994).
VI. Bassiouny, Ramadan, and Nader SA Korah. “Effect of solar chimney inclination angle on space flow pattern and ventilation rate.” Energy and Buildings 41.2 (2009).‏
VII. Buonomo, Bernardo, et al. “Thermal and fluid dynamic analysis of solar chimney building systems.” International Journal of Heat and Technology 31.2 (2013).‏
VIII. Calmidi V. V., and Mahajan R. L. Forced convection in high porosity metalfoams. Journal of Heat Transfer, 2000; 122 (8): Õ 557.
IX. Guo C.X., Zhang W.J., and Wang D.B. Numerical investigation of heat transfer enhancement in latent heat storage exchanger withparaffin/graphite foam. 10th Int. Conf. on Heat Transfer, Fluid Mechanicsand Thermodynamics 2014; July: 14 – 26.
X. Hweij, WalidAbou, et al. “Evaporatively-cooled window driven by solar chimney to improve energy efficiency and thermal comfort in dry desert climate.” Energy and Buildings 139 (2017).‏
XI. Jianliu, X., Weihua, L.” Study on solar chimney used for room natural ventilation in nanjing”. Energy and Buildings, Vol.66, PP. 467-469, (2013).
XII. Kumar, MadhanAnand, and U. Krishnaveni. “Analysis of solar chimney with evaporative cooling cavity to improve indoor air quality.” Journal of Chemical and Pharmaceutical Sciences ISSN 974 (2015): 2115.‏
XIII. Rabani, Mehran, et al. “Empirical investigation of the cooling performance of a new designed Trombe wall in combination with solar chimney and water spraying system.” Energy and Buildings 102 (2015): 45-57.‏
XIV. Sarachitti, R., J. Hirunlabh, and J. Khedari. “3-D modelling of solar chimney-based ventilation system for building.” World Renewable Energy Congress VI. Pergamon, 2000.‏
XV. Struckmann, Fabio. “Analysis of a flat-plate solar collector.” Heat and Mass Transport, Project Report, 2008MVK160 (2008).‏

View Download