Attic heat gain reduction using a concrete tile ventilator

Kongrit Juengpimonyanon, Dittha Nonthiworawong, Thana Ananacha

Abstract


A concrete tile ventilator is an efficient device to reduce the heat accumulation in attic space and also reduced heat gain through the ceiling into the indoor. A concrete tile ventilator has been built from concrete which is the most common material used in the manufacturing of roof tile. The vent area of each concrete tile ventilator is 0.009 m2/ tile ventilator, and natural ventilation was applied. Two small houses were built using common materials. One of them surved as a reference house, and another one was used to install the tile ventilator. The roof was gable roof with 25 degree of inclination angle. The results from this study showed that the attic air temperature of a concrete tile ventilator was lower than the common concrete tile by about 1-4°C. With this reason, it is reduced the average hourly ceiling heat gain into an indoor by about 4-40 W/m2. It could ensure that, the concrete tile ventilator is a high ventilation rate that improve the number of air change through the attic space. Therefor, it is highly recommended for engineering and architectural designs of building components. Finally, installation of tile ventilator will use to save electricity cost for air conditioner.


Keywords


Concrete tile ventilator, Attic, Ceiling heat gain, number of air change, ventilation rate

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References


T. Taengchum, S. Chirarattana- non, R. H. B. Excell, K. Kubaha and P. Chaiwawatworakul, “A study on a ventilation stack integrate with a light pipe,” Applied Thermal Engineering, Vol. 50, no. 1, pp. 546-554, January 2013.

Withaya Puangsombut, “Cool-ing Load Reduction by PV Attic Ventilation”, Ph.D. Thesis (Energy Technology), King Mongkut’s University of Technology Thonburi, Bangkok, TH, 2017.

J. Hirunlabh, W. Puangsombut, J. Waewsak and J. Khedari, “PV attic ventilation: a simple tool for reducing cooling load and providing comfort,” Interna-tional Journal of Ambient Energy, Vol. 23, no 3, pp. 159-168.

O. Amornleetrakul, W. Puang-sombut and J. Hirunlabh, “Field investigation of the small house with the ventilate roof tiles,” Advance Materials Research, Vols. 931-932, pp. 1233-1237, 2014.

K. Juengpimonyanon, W. Puang-sombut and T. Ananacha, “Field investigation on thermal performance of the tile ventilator,” Applied Mechanics and Materials, Vols. 619, pp. 73-77, 2014.

D. Nonthiworawong, “Design of a light-vent pipe (LVP) to reduce building cooling load”, Ph.D. Thesis (Sustainable Energy and Environment Technology and Management), Rajamangala University of Technology Rattanakosin, Nakhon Pathom, TH, 2017.

J. Pukdum, S. Thipeye and T. Phengpom, “Heat gain reduction through ceiling by PV ventilation system,” The Journalof Industrial Technology, Vol. 8, no. 1, pp. 39-47, January-June 2020.

Kongrit Juengpimonyanon, “Design and Thermal Performance Evaluation of Tile Ventilators”, Ph.D. Thesis (Sustainable Energy and Environment Technology and Management), Rajamangala University of Technology Rattanakosin, Nakhon Pathom, TH, 2016.

F. C. McQuiston an J. . Parker, Heating Ventilating and Air Conditioning: Analysis and Design, John Wiley & Sons, Inc., USA, 1994.


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