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Title: Low-cost, high gains in the Maltese built environment : a case study of an energy efficient social housing project
Authors: Yousif, Charles
Buhagiar, Vincent
Camilleri, A.
Vazquez Fernandez, Carlos
Keywords: Dwellings -- Energy consumption -- Malta
Architecture and energy conservation -- Malta
Energy conservation -- Malta
Issue Date: 2011
Publisher: European Council of Civil Engineers
Citation: Yousif, C., Buhagiar, C ., Camilleri, A., & Fernandez Vazquez C. (2011). Low-cost, high gains in the Maltese built environment : a case study of an energy efficient social housing project. International Conference Sustainable Development: Civil Engineering and the Built Environment, Kamra tal-Periti and the European Council of Civil Engineers, Malta. 107-114.
Abstract: Just over a year ago, the European recast 2010/31/EU of the Energy Performance of Buildings Directive was adopted. Under this Directive, important changes to the original directive 2002/91/EC have been made, especially with regards to the elimination of the 1,000 m² threshold on buildings that require energy certification and the introduction of binding measures, whereby Member States should introduce a minimum level of renewable energy contribution in new and renovated buildings. However, the Directive does not specify the methodology to be followed to attain the anticipated results, as it is believed that buildings have specific issues within each country. Hence, it becomes extremely important for each Member State to carry out research on a national level, in order to identify the best options available, not only to attain better energy performance of buildings but also to be able to legislate energy efficiency measures that have been proven to be cost-effective and long lasting. This paper provides an overall picture of implementing energy efficiency measures as well as renewable energy systems in a typical Maltese building block, which was also the first energy efficient prototype to be built by the Housing Authority in 2004. The approach has been to evaluate all the possible measures that could be included in the building envelope, as well as all the services that could enhance the building’s energy efficiency status. Within the building envelope, insulation was added to the roof and exposed walls during construction, two courses were added to the top floor to improve temperature stratification, double-glazed tinted windows and louvers were used and shading features were incorporated in the design. The services that were introduced in the building were solar water heaters for the apartments, a 1.5 kWp photovoltaic system for the showroom, sun pipes for the garages and forced ventilation for the stairwell and common areas. An economic benefit analysis has also been carried out on the major options, based on the added costs required to incorporate them in the building envelope. The top three measures that scored highest points in terms of energy efficiency, net present value and pay-back periods were solar heaters, insulation and tinted double glazing. The total additional investment to incorporate all measures has also been determined to be quite moderate and should not be a concern for escalating the price of property.
ISBN: 9789995700317
Appears in Collections:Scholarly Works - FacBenED
Scholarly Works - InsSE

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