Simulation of air movement in terrace house using convection ventilator

Ayol, Minah and Husain, Adnan and Leman, Abd Mutalib and Mohd Yusof, Mohd Zainal Simulation of air movement in terrace house using convection ventilator. In: National Seminar on Energy in Buildings (NSEB2005), 10-11 May 2005, Subang Jaya, Selangor.

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Abstract

This paper presents the simulation of air flow in naturally ventilated house using Computational Fluid Dynamics (CFD) technique. This study is to verify the effectiveness of using convection ventilator in reducing indoor air temperature and improving air movement in naturally ventilated building. The air distribution parameter address in this study are air temperature, relative humidity, air velocity, CO2 gas, CO gas, and comfort index (PMV and PPD). Measurements were done in six major areas in the house after installing the ventilator turbine. The simulations were performed by using FLOVENT software with involving occupants inside the house with two types of turbulence model before and after installing the ventilator. All the data obtained ware analyzed and compared with the ASHRAE standard 62-1989, ASHRAE standard 62-1999, EPA- National Ambient Air Quality Standard and relevant previous study. Result obtained for actual measurements were, 31.26 °C – 32.08 °C for air temperature, 61% - 73.6% for relative humidity, 347 ppm – 442.8 ppm for CO2 gas, 0.8 ppm – 1.04 ppm for CO gas and 0.026 m/s – 0.088 m/s for air velocity. Compared to CFD simulation, results obtained were in the range of 32.79 °C – 34.82 °C for air temperature, 52% - 69% for relative humidity, 399 ppm for CO2 gas, 0.97 ppm for CO gas and 0.032 m/s – 0.0866 m/s for air velocity. As a conclusion, the CFD simulation using FLOVENT software is a useful tool for thermal comfort and indoor air quality prediction in a naturally ventilated house.

Item Type:Conference or Workshop Item (Paper)
Subjects:T Technology > TH Building construction > TH7005-7699 Heating and ventilation. Air conditioning
ID Code:2674
Deposited By:Normajihan Abd. Rahman
Deposited On:08 Nov 2012 09:25
Last Modified:08 Nov 2012 09:25

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