Indoor Cooling Load Reduction Using the Concrete Vent Tile Assisted with PV-Powered Pan
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Abstract
This paper proposes the concrete vent tile assisted with PV-powered fan (CVT-PV) to reduce accumulated heat in the interior of the test house that also function as a fresh air circulation equipment for daytime. The CVT-PV composed of a flat concrete tile with a circular vent, and a DC fan (1.5 W) connected with a PV panel (5 Wp). Two test houses were used for the experiment, one house served as a reference house and the other house as a house with CVT-PV. Each house is a volume by about 1.2 m3. The roof configuration of both houses is a shed roof with 25 deg of tile angle. The airflow pattern in this experiment is the cross ventilation. Experimental results showed that the CVT-PV could provide the maximum air ventilation rate 20 m3/h approximately, amounted of number of air change to the maximum nearly 16 air change per hour. Due to the CVT-PV ventilating efficiency combined with the circulated the number of air change, expressed in terms of the indoor temperature and relative humidity, are better than the reference house during 0.5ºC to 6.1ºC and 0.5 to 6.5%, respectively, and also the cooling load reduced by about 43.37%. With this reason, the properties of humid air of a house with CVT-PV are in the Thailand ventilation comfort chart, which approached to comfortable zone than the reference house.
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Articles published in Journal of Industrial Technology Ubon Ratchathani Rajabhat University both hard copy and electronically are belonged to the Journal.
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