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dc.contributor.authorSchembri, Maurizio
dc.contributor.authorMicallef, Daniel
dc.identifier.citationSchembri, M., & Micallef, D. (2018). The effectiveness of vernacular stack ventilation with application in modern and retrofitted buildings. The ESSE ’18 Conference, St. Paul’s Bay. 80-87.en_GB
dc.description.abstractVentilation is a vital aspect in an internal environment for every room occupant to achieve basic health requirements and acceptable thermal comfort. To achieve the required ventilation rate, mechanical ventilation is generally used in modern buildings. This comes at an energy cost required in operating the necessary equipment. In some cases, it makes sense to make use of natural ventilation depending on site conditions. Vernacular stack ventilation systems use vents to try to achieve modestly ventilated spaces. At the moment, there is little to no knowledge on their effectiveness and no quantification of the ventilation rates can be found from the addressed literature. This research aims at bridging this gap in knowledge. The ventilation flow rates resulting from vents are numerically assessed using a hypothetical test room as well as a case study. On the basis of this, new modifications are proposed and analysed. The purpose of this is to enhance the ventilation flow rates and compare them with established ventilation standards. The numerical approach used here is based on Computational Fluid Dynamics (CFD). The results obtained are promising, as the studied case was found to result in an air change rate of 3.2l/s or 0.13 ACH for a typical summer condition while the enhanced natural ventilation case produced a ventilation rate of 5.8 l/s or 0.23 ACH, with a significant improvement in comfort. Upon further research, such a vernacular ventilation system using vents could be an important yet simple and relatively maintenance free approach. This can aid in reaching nearly zero energy targets for buildings.en_GB
dc.publisherUniversity of Malta. Institute for Sustainable Energy & Chamber of Engineers (Malta)en_GB
dc.subjectBuildings -- Retrofittingen_GB
dc.subjectBuildings -- Energy conservationen_GB
dc.subjectComputational fluid dynamicsen_GB
dc.subjectNatural ventilationen_GB
dc.titleThe effectiveness of vernacular stack ventilation with application in modern and retrofitted buildingsen_GB
dc.rights.holderThe copyright of this work belongs to the author(s)/publisher. The rights of this work are as defined by the appropriate Copyright Legislation or as modified by any successive legislation. Users may access this work and can make use of the information contained in accordance with the Copyright Legislation provided that the author must be properly acknowledged. Further distribution or reproduction in any format is prohibited without the prior permission of the copyright holderen_GB
dc.bibliographicCitation.conferencenameEngineering Sustainability & Sustainable Energy 2018 (ESSE ’18) Conferenceen_GB
dc.bibliographicCitation.conferenceplaceSt. Paul’s Bay, Malta, 08/05/2018en_GB
Appears in Collections:ISE Conference 2018

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