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A comparison of the UK Standard Assessment Procedure and detailed simulation of solar energy systems for dwellings

Murphy, Gavin B. and Kummert, M. and Anderson, B.R. and Counsell, John M. (2011) A comparison of the UK Standard Assessment Procedure and detailed simulation of solar energy systems for dwellings. Journal of Building Performance Simulation, 4 (1). pp. 75-90. ISSN 1940-1493

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Abstract

The drive to reduce worldwide Carbon Emissions directly associated with dwellings and to achieve a zero carbon home dictates that Renewable Energy Technologies will have an increasingly large role in the built environment. Created by the Building Research Establishment (BRE), the Standard Assessment Procedure (SAP) is the UK Government's approved methodology for assessing the energy ratings of dwellings. This paper presents an evaluation of the advantage given to SAP ratings by the domestic installation of typical Photovoltaic (PV) and Solar Domestic Hot Water (SDHW) systems in the UK. Comparable PV and SDHW systems will also be simulated with more detailed modelling packages. Results suggest that calculation variances can exist between the SAP methodology and detailed simulation methods, especially for higher performance systems that deviate from the default efficiency parameters.