Nearly half of the total energy generation in the developed world is inefficiently used to heat, cool, ventilate and control humidity in buildings. Unfortunately, the concepts developed through many research and demonstration projects have struggled to become assimilated into main-stream construction. In Europe, the most successful passive design standard, the German PassivHaus standard, has certified only 30,000 buildings in 15 years. Comparing this with the UK Government's 2016 target for the construction of 240,000 new homes per year and current quarterly output of around 29,380 homes it is evident that additional routes to achieving low and zero energy buildings must be investigated and developed if deep cuts in energy use and associated carbon emissions are to be attained by the building sector. Furthermore, there must be a focus on whole-life impact. To achieve the space heating energy targets of the PassivHaus standard, walls typically require insulation to a thickness of at least 300 mm and this level of conventional insulation material significantly increases the embodied energy content of the finished building. At present, inorganic insulation materials dominate the building industry, although interest in the use of natural fibre insulation products is steadily increasing. In Europe inorganic fibrous materials, e.g. stone wool and glass wool, account for 60% of the market. Organic foamy materials such as expanded and extruded polystyrene account for 27% of the market, whilst all other materials combined make up less than 13%. In the case of the mineral fibre materials adhesives are often added as are water-repellent oils as both increase mechanical strength. Expanded and extruded polystyrene are both oil-based polymerised polystyrol and the production process requires blowing agents which, since the phase-out of ozone depleting materials, are typically pentane and carbon dioxide, respectively. Pentane contributes to smog and ground level ozone and carbon dioxide, due to its low solubility and high diffusivity in polymers, make it difficult to produce low density foams which result in poorer thermal performance compared with those insulation materials made using HCFC blowing agents. Natural fibre insulation (NFI) can be seen as an excellent form of carbon emission mitigation. NFI not only reduces the in-service carbon emissions of buildings through reduced energy demands, but through the use of plant based fibres carbon is stored within the material, as a result of plant photosynthesis, so significantly reducing the global warming impact of the insulation material. However, much is unknown about the performance of NFI materials. Where evidence-based data are available they are almost universally based on steady-state test performance data rather than the more complex dynamic variations experienced in real buildings. Frequently, where test data relating to thermal conductivity are presented, it is based on standard test conditions of a material in a dry state and at one mean temperature. Accordingly practitioners use such test results for prediction of in-service energy performance or evaluation of retrofit benefits, often without consideration for variability due to the changeability in the thermo-physical properties of the material or the validity of the test conditions. Whilst this situation affects all building materials attempts have been made to evaluate sensitivity and the impact on energy performance for more conventional products but there is little evidence of the same approach for NFI. Furthermore, the hygroscopic nature of NFI materials results in much greater variability in their thermal performance. The primary aim of this project is the quantification of the dynamic thermal performance of NFI materials through experiment and simulation, which will help to support a growing 'green economy' and provide valuable data for building designers and developers of building simulation models.

This project will develop sound methods for future climate change data for building designers to use for new buildings and refurbishments that could last to the end of this century. The principal application output will be a draft Technical Memorandum (TM) for the Chartered Institution of Building Services Engineers, CIBSE, suitable for practising designers. This will be supported by extensive case studies to validate the new weather data design methodology and be used in research tasks described later. 'Story lines' relevant to different scenarios for the climate and built environment will be developed as well as risk levels in building design to enable designers to use the weather data with confidence. The TM will provide CIBSE with a consistent methodology for the selection and use of future data for its new Design Guide, a fundamental document used by designers of buildings and their services and a supporting document for the Government's Building Regulations. The basis for this project will be the UK Climate Impacts Programme (UKCIP) future scenarios to be published in 2008 (UKCIP08) from which may be derived probabilities of different weather outcomes over this century. Academic outputs will include an extensive assessment of the carbon reduction potential of active and passive systems and designs for new and refurbished buildings. They will utilise case studies with PC simulation of the building and systems, employing the new probabilistic weather data. These assessments will provide designers and policy makers with guidelines to help reduce the growth in greenhouse gases (GHGs) from buildings, which at present contribute about 50% of the UK emissions. Other academic outputs will provide the theoretical basis underlying the proposed consistent PC-based and manual design methodology with coincident, probabilistic future weather data parameters such as solar radiation, air temperature, wind speed and direction. It is known that solar radiation and air temperature have peak values at different times and on different days but current design methods do necessarily separate them so that over-design often occurs. A related academic output will be a theory underpinning the selection of the proposed new Design Reference Year (DRY) which will facilitate building design (including passive and active heating and cooling systems and comfort assessment) with simulation on a PC. The DRY will replace the currently unsatisfactory Design Summer Year. Solar radiation data, not covered in detail in the HadRM3 and UKCIP02 models, will be developed to satisfy designers' requirements. Likewise wind data (crucial to include since wind drives natural ventilation) although the confidence level will be lower. Rainfall duration and quantity are also important in the building design process because of drainage and rain penetration damage and designers' requirements will again be reviewed.'Urban heat island' effects (urban areas are often hotter than the nearby rural areas), briefly mentioned in the present Guide, will be incorporated in the new data, developing on SCORCHIO work to provide more realistic urban weather data. Local modification or downscaling will also be applied to generate data for other sites in the UK. This will enable the new Guide to cover more than the current 14 sites for which data were developed by Manchester for CIBSE.To ensure that the new, probabilistic outputs will be useful to professionals, and to reflect best practice in design, there will be strong stakeholder involvement through the formation of a Stakeholders Group, including Corresponding Members, which will include CIBSE, architects and software houses and housebuilders. Policy interests will be reached via the Department for Communities and Local Government, and DEFRA and their contractors, such as BRE. There will be links to the Manchester-led EPSRC SCORCHIO urban heat island and climate change project, UKCIP and the Tyndall Centre.

This project will develop sound methods for future climate change data for building designers to use for new buildings and refurbishments, most of which will last to the end of this century. The outputs will primarily be: academic papers and a draft for a Chartered Institution of Building Services Engineers, CIBSE, Technical Memorandum, suitable for practising designers; case studies to validate the new weather data design methodology and assess the potential adaptation of new and refurbished buildings to reduce carbon emissions. This TM will also be useful for CIBSE to use to determine a consistent future weather design methodology and future data for its new Design Guide, which is the fundamental document used by Building Services Engineers for designing buildings and their services. It is a supporting document for the Government's Building Regulations. The basis for this CIBSE data will be the new UK Climate Impacts Programme, UKCIP, future scenarios due in 2008, UKCIP08, with probabilities of various future weather outcomes for this century.To ensure that the new, probabilistic outputs will be useful to professionals, and to reflect best practice in design, there will be strong stakeholder involvement through the formation of a Stakeholders Group, via CIBSE, (Weather Task Force and collaborating consultancies), the Manchester-led EPSRC SCORCHIO project, (looking at urban heat island and climate change vulnerability, with contacts to UKCIP and the Tyndall Centre), architects and software houses. Policy makers will be reached via the Stakeholder Group Corresponding Members linked to the Department for Communities and Local Government and their contractors, including BRE. Risk levels will be assessed and data provided to enable designers to use the data with confidence. This bottom-up approach will serve to inform policy makers of what can be achieved practically. In addition there will be numerous case studies for validating the new methodology andTo provide this consistency, a novel method will be developed which will allow UKCIP08 scenarios and probabilistic weather data to be the basis of design which takes into account coincident weather parameters, e.g. solar radiation, air temperature, wind speed and direction. It is known that solar and air temperature have profound and sometimes differing influences on the comfort and carbon emissions of the building and that design values in the Guide are not necessarily coincident. Thus the hottest summer (or summer day) may well not be the sunniest summer (or day). New building design indices will be developed, with the aid of the current building designs contributed by members of the Stakeholder Group and collaborators. Solar radiation data, not covered in detail in the HadRM3 and UKCIP02 models, will be developed to satisfy designers' requirements. Likewise wind data, although the confidence level will be lower. It will be crucial to include wind data since wind drives natural ventilation. Rainfall duration and quantity are also important in the building design process because of drainage and rain penetration damage and designers' requirements will again be reviewed.Urban heat island effects, (where the urban areas are often hotter than the nearby rural areas), briefly mentioned in the present Guide, will be developed from the EPSRC SCORCHIO work to provide more realistic urban weather data. Local modification or downscaling will also be applied to generate data for other sites in the UK. This will enable the new Guide to cover more than the current 14 sites for which data were developed by Manchester for CIBSE

This project will develop sound methods for future climate change data for building designers to use for new buildings and refurbishments that could last to the end of this century. The principal application output will be a draft Technical Memorandum (TM) for the Chartered Institution of Building Services Engineers, CIBSE, suitable for practising designers. This will be supported by extensive case studies to validate the new weather data design methodology and be used in research tasks described later. 'Story lines' relevant to different scenarios for the climate and built environment will be developed as well as risk levels in building design to enable designers to use the weather data with confidence. The TM will provide CIBSE with a consistent methodology for the selection and use of future data for its new Design Guide, a fundamental document used by designers of buildings and their services and a supporting document for the Government's Building Regulations. The basis for this project will be the UK Climate Impacts Programme (UKCIP) future scenarios to be published in 2008 (UKCIP08) from which may be derived probabilities of different weather outcomes over this century. Academic outputs will include an extensive assessment of the carbon reduction potential of active and passive systems and designs for new and refurbished buildings. They will utilise case studies with PC simulation of the building and systems, employing the new probabilistic weather data. These assessments will provide designers and policy makers with guidelines to help reduce the growth in greenhouse gases (GHGs) from buildings, which at present contribute about 50% of the UK emissions. Other academic outputs will provide the theoretical basis underlying the proposed consistent PC-based and manual design methodology with coincident, probabilistic future weather data parameters such as solar radiation, air temperature, wind speed and direction. It is known that solar radiation and air temperature have peak values at different times and on different days but current design methods do necessarily separate them so that over-design often occurs. A related academic output will be a theory underpinning the selection of the proposed new Design Reference Year (DRY) which will facilitate building design (including passive and active heating and cooling systems and comfort assessment) with simulation on a PC. The DRY will replace the currently unsatisfactory Design Summer Year. Solar radiation data, not covered in detail in the HadRM3 and UKCIP02 models, will be developed to satisfy designers' requirements. Likewise wind data (crucial to include since wind drives natural ventilation) although the confidence level will be lower. Rainfall duration and quantity are also important in the building design process because of drainage and rain penetration damage and designers' requirements will again be reviewed.'Urban heat island' effects (urban areas are often hotter than the nearby rural areas), briefly mentioned in the present Guide, will be incorporated in the new data, developing on SCORCHIO work to provide more realistic urban weather data. Local modification or downscaling will also be applied to generate data for other sites in the UK. This will enable the new Guide to cover more than the current 14 sites for which data were developed by Manchester for CIBSE.To ensure that the new, probabilistic outputs will be useful to professionals, and to reflect best practice in design, there will be strong stakeholder involvement through the formation of a Stakeholders Group, including Corresponding Members, which will include CIBSE, architects and software houses and housebuilders. Policy interests will be reached via the Department for Communities and Local Government, and DEFRA and their contractors, such as BRE. There will be links to the Manchester-led EPSRC SCORCHIO urban heat island and climate change project, UKCIP and the Tyndall Centre.

This project will develop sound methods for future climate change data for building designers to use for new buildings and refurbishments that could last to the end of this century. The principal application output will be a draft Technical Memorandum (TM) for the Chartered Institution of Building Services Engineers, CIBSE, suitable for practising designers. This will be supported by extensive case studies to validate the new weather data design methodology and be used in research tasks described later. 'Story lines' relevant to different scenarios for the climate and built environment will be developed as well as risk levels in building design to enable designers to use the weather data with confidence. The TM will provide CIBSE with a consistent methodology for the selection and use of future data for its new Design Guide, a fundamental document used by designers of buildings and their services and a supporting document for the Government's Building Regulations. The basis for this project will be the UK Climate Impacts Programme (UKCIP) future scenarios to be published in 2008 (UKCIP08) from which may be derived probabilities of different weather outcomes over this century. Academic outputs will include an extensive assessment of the carbon reduction potential of active and passive systems and designs for new and refurbished buildings. They will utilise case studies with PC simulation of the building and systems, employing the new probabilistic weather data. These assessments will provide designers and policy makers with guidelines to help reduce the growth in greenhouse gases (GHGs) from buildings, which at present contribute about 50% of the UK emissions. Other academic outputs will provide the theoretical basis underlying the proposed consistent PC-based and manual design methodology with coincident, probabilistic future weather data parameters such as solar radiation, air temperature, wind speed and direction. It is known that solar radiation and air temperature have peak values at different times and on different days but current design methods do necessarily separate them so that over-design often occurs. A related academic output will be a theory underpinning the selection of the proposed new Design Reference Year (DRY) which will facilitate building design (including passive and active heating and cooling systems and comfort assessment) with simulation on a PC. The DRY will replace the currently unsatisfactory Design Summer Year. Solar radiation data, not covered in detail in the HadRM3 and UKCIP02 models, will be developed to satisfy designers' requirements. Likewise wind data (crucial to include since wind drives natural ventilation) although the confidence level will be lower. Rainfall duration and quantity are also important in the building design process because of drainage and rain penetration damage and designers' requirements will again be reviewed.'Urban heat island' effects (urban areas are often hotter than the nearby rural areas), briefly mentioned in the present Guide, will be incorporated in the new data, developing on SCORCHIO work to provide more realistic urban weather data. Local modification or downscaling will also be applied to generate data for other sites in the UK. This will enable the new Guide to cover more than the current 14 sites for which data were developed by Manchester for CIBSE.To ensure that the new, probabilistic outputs will be useful to professionals, and to reflect best practice in design, there will be strong stakeholder involvement through the formation of a Stakeholders Group, including Corresponding Members, which will include CIBSE, architects and software houses and housebuilders. Policy interests will be reached via the Department for Communities and Local Government, and DEFRA and their contractors, such as BRE. There will be links to the Manchester-led EPSRC SCORCHIO urban heat island and climate change project, UKCIP and the Tyndall Centre.