Simulation of ventilation flow through a room fitted with a windcatcher incorporating phase change materials

Abdo, P; Reyes-Cubas, A

Simulation of ventilation flow through a room fitted with a windcatcher incorporating phase change materials

Abdo, P

Reyes-Cubas, A

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Publisher:: American Society of Mechanical Engineers
Publication Type:: Conference Proceeding
Citation:: American Society of Mechanical Engineers, Fluids Engineering Division (Publication) FEDSM, 2020, 3
Issue Date:: 2020-01-01

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Field	Value	Language
dc.contributor.author	Abdo, P https://orcid.org/0000-0001-9650-2141
dc.contributor.author	Reyes-Cubas, A
dc.date	2020-07-13
dc.date.accessioned	2021-04-05T06:01:29Z
dc.date.available	2021-04-05T06:01:29Z
dc.date.issued	2020-01-01
dc.identifier.citation	American Society of Mechanical Engineers, Fluids Engineering Division (Publication) FEDSM, 2020, 3
dc.identifier.isbn	9780791883730
dc.identifier.issn	0888-8116
dc.identifier.uri	http://hdl.handle.net/10453/147833
dc.description.abstract	Natural ventilation is the process of supplying and removing air through an indoor space by natural means. Windcatcher has been used over centuries for providing natural ventilation using wind power, it is an effective passive method to provide healthy and comfortable indoor environment by decreasing moisture content in the air and reducing pollutants concentration effectively. The windcatcher’s function is based on the wind and on the stack effect resulting from temperature differences. Materials that change phase at certain temperature are frequently referred to as Phase Change Materials (PCMs). PCMs change from solid to liquid and vice versa. PCMs could be used in passive cooling systems and they are directly related to building energy efficiency. In this study air flow through a two-dimensional room fitted with a windcatcher and incorporated with phase change materials (PCMs) is simulated. The temperature change in the room implementing PCM is analyzed to monitor the PCMs’ performance. To achieve this, Ansys Fluent is used to simulate the temperature changes inside the room as well as the melting process of PCM. PCM is placed at the right and left walls of the room and at its bottom. Two cases have been considered (with and without PCM) and the average temperatures at three locations have been compared for an inlet velocity of 1 m/s and an inlet temperature of 302 K. The average temperature at 1.2 m high inside the room with PCM dropped by about 1 – 2 ºC compared to that without PCM.
dc.language	en
dc.publisher	American Society of Mechanical Engineers
dc.relation.ispartof	American Society of Mechanical Engineers, Fluids Engineering Division (Publication) FEDSM
dc.relation.ispartof	ASME 2020 Fluids Engineering Division Summer Meeting collocated with the ASME 2020 Heat Transfer Summer Conference and the ASME 2020 18th International Conference on Nanochannels, Microchannels, and Minichannels
dc.relation.isbasedon	10.1115/FEDSM2020-20171
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject.classification	Mechanical Engineering & Transports
dc.title	Simulation of ventilation flow through a room fitted with a windcatcher incorporating phase change materials
dc.type	Conference Proceeding
utslib.citation.volume	3
utslib.for	0913 Mechanical Engineering
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/DVC (Teaching and Learning)
pubs.organisational-group	/University of Technology Sydney/Provost
pubs.organisational-group	/University of Technology Sydney/Provost/Jumbunna
utslib.copyright.status	closed_access	*
dc.date.updated	2021-04-05T06:01:28Z
pubs.finish-date	2020-07-15
pubs.publication-status	Published
pubs.start-date	2020-07-13
pubs.volume	3

Abstract:

Natural ventilation is the process of supplying and removing air through an indoor space by natural means. Windcatcher has been used over centuries for providing natural ventilation using wind power, it is an effective passive method to provide healthy and comfortable indoor environment by decreasing moisture content in the air and reducing pollutants concentration effectively. The windcatcher’s function is based on the wind and on the stack effect resulting from temperature differences. Materials that change phase at certain temperature are frequently referred to as Phase Change Materials (PCMs). PCMs change from solid to liquid and vice versa. PCMs could be used in passive cooling systems and they are directly related to building energy efficiency. In this study air flow through a two-dimensional room fitted with a windcatcher and incorporated with phase change materials (PCMs) is simulated. The temperature change in the room implementing PCM is analyzed to monitor the PCMs’ performance. To achieve this, Ansys Fluent is used to simulate the temperature changes inside the room as well as the melting process of PCM. PCM is placed at the right and left walls of the room and at its bottom. Two cases have been considered (with and without PCM) and the average temperatures at three locations have been compared for an inlet velocity of 1 m/s and an inlet temperature of 302 K. The average temperature at 1.2 m high inside the room with PCM dropped by about 1 – 2 ºC compared to that without PCM.

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http://hdl.handle.net/10453/147833