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Enhancement of the UK Standard Assessment Procedure (SAP) solar water heating prediction algorithm using parametric dynamical thermal simulations

Murphy, Gavin Bruce and Samuel, Aizaz Aamir and Counsell, John (2011) Enhancement of the UK Standard Assessment Procedure (SAP) solar water heating prediction algorithm using parametric dynamical thermal simulations. In: Building Simulation 2011 Conference, BS2011, 2011-11-14 - 2011-11-16, Sydney.

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    Abstract

    SAP is the UK Government’s method for calculation of a dwelling’s energy efficiency and carbon dioxide emissions. This paper presents a method of informing the SAP procedure regarding evaluation of the advantage given to SAP ratings by installation of typical domestic Solar Domestic Hot Water (SDHW) systems. Comparable SDHW systems were simulated using the dynamic thermal simulation package TRNSYS and results were translated into empirical relations in a form that could be input into the SAP calculation procedure. Findings were compared against the current SAP algorithm and differences explained. Results suggest that calculation variances can exist between the SAP methodology and detailed dynamic thermal simulation methods. This is especially true for higher performance systems that can deviate greatly from default efficiency parameters. This might be due to SAP algorithms being historically based on older systems that have lower efficiencies. An enhancement to the existing SAP algorithm is suggested.

    Item type: Conference or Workshop Item (Paper)
    ID code: 39673
    Keywords: standard assessment procedure (SAP) , solar domestic hot water (SDHW), TRYNSYS, Dynamic simulation, parametric model, Mechanical engineering and machinery, Building construction, Mechanical Engineering, Management, Monitoring, Policy and Law
    Subjects: Technology > Mechanical engineering and machinery
    Technology > Building construction
    Department: Faculty of Engineering > Mechanical and Aerospace Engineering
    Related URLs:
    Depositing user: Pure Administrator
    Date Deposited: 10 May 2012 16:22
    Last modified: 07 Sep 2014 02:46
    URI: http://strathprints.strath.ac.uk/id/eprint/39673

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