The SPAB Research Report 3: The SPAB Hygrothermal Modelling
By Dan BrowneGet from publisher
This report forms part of the SPAB's Building Performance Survey, a research project supported by English Heritage, that looks at the performance of a number of traditional buildings both before and after refurbishment designed to improve energy efficiency. This report concentrates on one of the case study houses from that survey, located in Shrewsbury.
Following a review of the British Standards the report presents findings from a study using BS 15026 advanced condensation risk analysis software. The advanced hygrothermal simulation of the case study house, both pre-refurbishment and post-refurbishment raises various issues and has serious consequences, especially for the Green Deal.
Methods for improving accuracy in modelling thermal upgrades are presented along with further research needed and other recommendations for the building industry.
2. U-VALUE AND CONDENSATION RISK ANALYSIS TOOLS IN THE
3. ENERGY EFFICIENCY AND TRADITIONAL BUILDINGS
4. CONDENSATION RISK ANALYSIS WITHIN THE BRITISH,
EUROPEAN AND INTERNATIONAL STANDARDS
BS 5250:2011 Code of practice for control of condensation in buildings.
BS EN ISO 13788:2002 Hygrothermal performance of building components and building elements - Internal surface temperature to avoid critical surface humidity and interstitial condensation - Calculation methods.
BS EN 15026:2007 Hygrothermal performance of building components and building elements - Assessment of moisture transfer by numerical simulation.
5. WUFI Pro 5.1 ONE-DIMENSIONAL HYGROTHERMAL
Hygrothermal Material Properties
Measurement of Material Properties
Thermal Transmittance (U-Value) and Calculation Standards
6. CASE STUDY - ABBEYFOREGATE, SHREWSBURY
Energy Efficiency Measures
Overview of the Study
One-dimensional Representation of the Walls with and without IWI
Establishing Material Inputs
Mortar Sensitivity Analysis
Brick Sensitivity Analysis
Results of climate sensitivity analyses
Application to the Wider Context
Comparison with in situ Results
Case Study Conclusions
9. RECOMMENDATIONS AND FURTHER RESEARCH
Standardised Approaches to Simulating Traditional Buildings
Material Testing and Public Material Database
In Situ Monitoring
Water content of IWI study, calculation summary
Climatic variables, calculation summary
BS 8104:1992 wind-driven rain calculation
- Publication Status: Completed
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