Climate change future proofing of buildings—Generation and assessment of building simulation weather files

• Published in: Energy and buildings Vol. 40; no. 12; pp. 2148 - 2168
• Main Authors: Jentsch, Mark F., Bahaj, AbuBakr S., James, Patrick A.B.
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier B.V 2008; Elsevier
• Subjects: Applied sciences; Assessments; Buildings; Buildings. Public works; Climate change; Climatology; Climatology and bioclimatics for buildings; Commercial building; Environmental monitoring; Exact sciences and technology; Office building; Overheating; Simulation; Summer; Summer overheating; Thermal simulation; Types of buildings; Weather; Weather data; British Isles; Office building; Climate change; Summer overheating; Environmental monitoring; Weather data; Thermal simulation; Performance evaluation; Data analysis; Dynamical climatology; Case study; Weather; Requirement; Meteorological station; Simulation program; Monitoring
• ISSN: 0378-7788
• DOI: 10.1016/j.enbuild.2008.06.005

Simulation packages for predicting building performance in terms of energy and comfort are becoming increasingly important in the planning process. However, current industry standard weather files for building simulation are not suited to the assessment of the potential impacts of a changing climate, in particular summer overheating risks. In addition, no bespoke climate change weather files are readily available that can be loaded directly into environmental simulation software. This paper describes the integration of future UK climate scenarios into the widely used Typical Meteorological Year (TMY2) and EnergyPlus/ESP-r Weather (EPW) file formats and demonstrates the importance of climate change analysis through a case study example. The ‘morphing’ methodology published by the Chartered Institution of Building Services Engineers (CIBSE) is utilised as a baseline for transforming current CIBSE Test Reference Years (TRY) and Design Summer Years (DSY) into climate change weather years. A tool is presented that allows generation of TMY2/EPW files from this ‘morphed’ data and addresses the requirements related to solar irradiation, temperature, humidity and daylighting beyond the parameters provided by CIBSE weather years. Simulations of a case study building highlight the potential impact of climate change on future summer overheating hours inside naturally ventilated buildings.