Modelling and optimization of direct expansion air conditioning system for commercial building energy saving

Vakiloroaya, V; Zhu, JG; Ha, QP

Modelling and optimization of direct expansion air conditioning system for commercial building energy saving

Vakiloroaya, V Zhu, JG

Ha, QP

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Publication Type:: Conference Proceeding
Citation:: Proceedings of the 28th International Symposium on Automation and Robotics in Construction, ISARC 2011, 2011, pp. 233 - 238
Issue Date:: 2011-12-01

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Field	Value	Language
dc.contributor.author	Vakiloroaya, V	en_US
dc.contributor.author	Zhu, JG https://orcid.org/0000-0002-9763-4047	en_US
dc.contributor.author	Ha, QP https://orcid.org/0000-0003-0978-1758	en_US
dc.date.issued	2011-12-01	en_US
dc.identifier.citation	Proceedings of the 28th International Symposium on Automation and Robotics in Construction, ISARC 2011, 2011, pp. 233 - 238	en_US
dc.identifier.uri	http://hdl.handle.net/10453/19310
dc.description.abstract	This paper presents a comprehensive refinement of system modeling and optimization study of air-cooled direct expansion (DX) refrigeration systems for commercial buildings to address the energy saving problem. An actual DX rooftop package of a commercial building in the hot and dry climate condition is used for experimentation and data collection. Both inputs and outputs are known and measured from the field monitoring. The optimal supply air temperature and refrigerant flow rate are calculated based on the cooling load and ambient dry-bulb temperature profiles in one typical week in the summer. Optimization is performed by using empirically-based models of the refrigeration system components for energy savings. The results are promising as approximately 9% saving of the average power consumption can be achieved subject to a predetermined comfort constraint on the ambient temperature. The proposed approach will make an attractive contribution to residential and commercial building HVAC applications in moving towards green automation.	en_US
dc.relation.ispartof	Proceedings of the 28th International Symposium on Automation and Robotics in Construction, ISARC 2011	en_US
dc.title	Modelling and optimization of direct expansion air conditioning system for commercial building energy saving	en_US
dc.type	Conference Proceeding
utslib.for	0910 Manufacturing Engineering	en_US
dc.location.activity	Seoul Korea	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Electrical and Data Engineering
pubs.organisational-group	/University of Technology Sydney/Strength - CBI - Centre for Built Infrastructure
pubs.organisational-group	/University of Technology Sydney/Strength - CCET - Centre for Clean Energy Technology
utslib.copyright.status	open_access
pubs.publication-status	Published	en_US

Abstract:

This paper presents a comprehensive refinement of system modeling and optimization study of air-cooled direct expansion (DX) refrigeration systems for commercial buildings to address the energy saving problem. An actual DX rooftop package of a commercial building in the hot and dry climate condition is used for experimentation and data collection. Both inputs and outputs are known and measured from the field monitoring. The optimal supply air temperature and refrigerant flow rate are calculated based on the cooling load and ambient dry-bulb temperature profiles in one typical week in the summer. Optimization is performed by using empirically-based models of the refrigeration system components for energy savings. The results are promising as approximately 9% saving of the average power consumption can be achieved subject to a predetermined comfort constraint on the ambient temperature. The proposed approach will make an attractive contribution to residential and commercial building HVAC applications in moving towards green automation.

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http://hdl.handle.net/10453/19310