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Buildings 2016, 6(3), 29; doi:10.3390/buildings6030029

The Importance of Heating System Transient Response in Domestic Energy Labelling

1
UCL Energy Institute, Bosch Thermotechnik GmbH, Wernau 73249, Germany
2
UCL Energy Institute, London WC1H 0NN, UK
*
Author to whom correspondence should be addressed.
Academic Editor: Christopher Underwood
Received: 30 June 2016 / Revised: 29 July 2016 / Accepted: 4 August 2016 / Published: 8 August 2016
(This article belongs to the Special Issue Modelling of Heating and Cooling in Buildings)
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Abstract

European National Calculation Methods (NCM), such as the UK Standard Assessment Procedure (SAP), are used to make standardised and simplified assessments of building energy performance. These NCMs contain simplifications to aid ease of use and comparability of resulting Energy Performance Certificates (EPC). By comparing SAP with a modern, dynamic modelling system, this study quantifies internal temperatures and thereby heating energy consumption. Results show that for the considered test house SAP results correspond closely to a dynamic model using an idealistic heating system, with perfect control and instant responsiveness. However, the introduction of a dynamic, physically realistic gas fired boiler and water based heating system to the model results in a consistent increase in internal temperature (0.5 °C) and energy demand (by ca. 1000 kWh/a). Variation of further parameters within the dynamic model, controls and heat source size, are presented and compared to SAP results and assumptions. The inclusion of more realistic dynamics in building energy modelling for NCMs may provide a better basis for effective decision making with respect to a wide range of heating systems. View Full-Text
Keywords: building; simulation; EPC; heating; dynamic; control; SAP building; simulation; EPC; heating; dynamic; control; SAP
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Bennett, G.; Elwell, C.; Lowe, R.; Oreszczyn, T. The Importance of Heating System Transient Response in Domestic Energy Labelling. Buildings 2016, 6, 29.

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