Modelling buildings for energy use: a study of the effects of using multiple simulation tools and varying levels of input detail.

Bleil De Souza, Clarice ORCID: https://orcid.org/0000-0001-7823-1202, Knight, Ian Paul ORCID: https://orcid.org/0000-0002-4871-4016, Dunn, Gavin and Marsh, Andrew 2006. Modelling buildings for energy use: a study of the effects of using multiple simulation tools and varying levels of input detail. Presented at: International Conference on Electricity Efficiency in Commercial Buildings (IEECB 2006), Frankfurt, Germany, 26-27 April 2006. Improving Energy Efficiency in Commercial Buildings. , vol.2 Luxembourg: Publications Office of the European Union,

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Abstract

Increasingly, legislation (including the imminent requirement for the energy labelling of buildings) is requiring the building industry to produce more accurate estimates of the energy performance of buildings and building services in use. This accuracy is unlikely to be met through means other than dynamic simulation models. However, in practice detailed information about important factors which affect the energy use of both new buildings during the design phase and existing buildings during operation can be very limited. This paper considers the accuracy with which the existing dynamic simulation models EnergyPlus and ESP-r predict temperature in one existing commercial office building for which the authors have detailed information - including measurements of internal and external conditions at every 15min intervals over 1 year period. It examines the predicted temperatures produced using two different simulation tools with two different modelling strategies: single zoning and multiple zoning. The predictions of internal temperature for the office building are then compared with the physical measurement of temperature in the building to provide an indication of the accuracy with which the complexities of a real situation can be predicted. The work forms part of the European project AUDITAC: “Field Benchmarking and Market Development for Audit Methods in Air Conditioning”, and builds on a previous project undertaken by the Welsh School of Architecture – “AC Energy Use in Offices: Field Monitoring Study”. As part of the process, the paper discusses the strategy used to generate compatible input data for the two energy modelling software packages. The establishment of compatibility is important to enable valid comparisons to be drawn between the different simulation algorithms. The paper ends by drawing preliminary conclusions as to the most important building modelling variables for the test building, and therefore which variables should have the most

Item Type:	Conference or Workshop Item (Paper)
Date Type:	Publication
Status:	Published
Schools:	Architecture
Subjects:	N Fine Arts > NA Architecture T Technology > T Technology (General) T Technology > TH Building construction
Uncontrolled Keywords:	simulation ; offices ; measurement ; energy use ; physical characteristics.
Additional Information:	This paper is in volume 2 (two) on the 115th page (numbered 451)
Publisher:	Publications Office of the European Union
ISBN:	92-79-02749-2
ISSN:	1018-5593
Last Modified:	18 Oct 2022 13:06
URI:	https://orca.cardiff.ac.uk/id/eprint/12328

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