The guidance advises using weather files which account for both the UHI effect and for future climate change. In London, the GLA requires that modelling is carried out using weather data and guidance from CIBSE 'Design Summer Years for London' (TM49: 2014).
#IES VE LOCATIONS HOW TO#
Please see How to Order Weather Data below. Note: Prepayment for Weather Data sets is required before sets are made available to purchasers. You can purchase sites individually or all together: Purchase options 1 and 2 together and receive a discount on the individual package price. Option 3: Combined current & future CIBSE TRY/DSY Hourly Weather Data (14 sites) 2020s – High emissions scenario – 10th, 50th, 90th percentile, Option 2: Future CIBSE TRY/DSY Hourly Weather Data (14 sites)įuture hourly weather files, based on the existing Design Summer Years (DSYs) and Test Reference Years (TRYs) which incorporate the UKCIP09 climate change scenarios, are available for 14 sites, for three time periods (2020s (2011-2040), 2050s (2041-2070) and 2080s (2071-2100)), for the following emissions scenarios: Option 1: Current CIBSE TRY/DSY Hourly Weather Data (14 sites) For this reason those sets are still made available on request.
#IES VE LOCATIONS SOFTWARE#
However, as stated elsewhere, when used for compliance purposes (and only for this purpose as Regulations have not been updated) the old TRY sets are still required, and hence the software seeks. Files in this format are included in CIBSE's 2016 weather data sets. IES have now switched to using EPW files. This is the old format used in IES software. The packages are made up of data presented in all three formats - EDSL Tas, EPW & Excel. h/m 2) cloud cover (oktas) wind speed (knots) wind direction (degrees clockwise from North) and Present Weather Code.įor more information download the Technical Briefing and Testing.The parameters included in the data sets are: dry bulb temperature (☌) wet bulb temperature (☌) atmospheric pressure (hPa) global solar irradiation (W The DSY is used for overheating analysis. The DSY is a single continuous year rather than a composite one made up from average months. The TRY is used for energy analysis and for compliance with the UK Building Regulations (Part L). The TRY is composed of 12 separate months of data each chosen to be the most average month from the collected data. TRYs files are used to do compliance analysis for UK Building Regulations: The weather variables are synthesised into 2 types of CIBSE weather files:ĭSYs and TRYs are used as climate inputs into building simulation software. CIBSE licenses the historic weather data from the MO for 13 locations across the UK, and 3 in London. Climate variables measured at hourly intervals include air temperatures, wind speed and direction and air pressure etc. The UK Meteorological Office (MO) collects weather data at stations across the UK.