Abstract
A solar chimney is an important green architectural element that aides the ventilation, heating and cooling of buildings. The proper design of a solar chimney requires a reliable model to estimate the airflow rate generated by solar radiation. Previous analytical models are based on inputs such as temperature, density or heat supply, which are difficult to predict the ventilation performance of a solar chimney at the preliminary design stage. This paper presents a new predictive model for the airflow rate in a typical solar chimney based on inputs such as incident solar radiation intensity and the emissivity of the glass cover considering both room and chimney cavity configurations. This model is developed after obtaining the predictive model of heat gain ratio of air in the gap. In the new predictive model, the airflow rate is expressed explicitly as a function of incident solar radiation intensity, internal heat source intensity, the emissivity of the glass cover and geometrical parameters. This model is verified by using experimental data in the literature. Simple in form, the predictive model has the potential to improve upon existing engineering designs. It is very convenient to estimate the ventilation performance of a solar chimney according to incident solar radiation intensity.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
