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fbtwitterlinkedinvimeoflicker grey 14rssslideshare1
Sharpe, Tim; Morgan, Chris
Languages: English
Types: Unknown
Subjects:
This paper will describe the results of a 2-year monitoring programme of 4 Passivhaus dwellings in Scotland. The dwellings, part of a group of 8 houses, are built in a rural location in the South of Scotland to Passivhaus standards for private rent. Construction uses an offsite timber panel system. The dwellings rely on solar thermal hot water heating, backed up by a small biomass stove, which both feed a hot water cylinder. Ventilation and heating is via a Mechanical Ventilation Heat Recovery (MVHR) system, with a post heater from the water store. In theory therefore these buildings are zero carbon in terms of space and water heating. The dwellings have been monitored for a two-year period, gathering detailed data on internal environmental conditions, and energy use, including sub-metered electrical use, along with qualitative data from interviews with the occupants and design team. The wood fuel sources have also been tested for energy content and carbon factors. Other fabric tests such as thermography, u-value testing and airtightness have been conducted. This paper will report on the results of these tests and monitoring and describe the performance of these buildings in practice. In general the performance is very good, but significant differences in occupant behaviour are noted that can affect this, and the importance of incidental gains from non-regulated energy use from electrical consumption, which may undermine the zero carbon targets and which can contribute to overheating, are discussed, as is the relative performance of the MVHR system.
  • The results below are discovered through our pilot algorithms. Let us know how we are doing!

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    • Green Construction Board Buildings Working Group, 2012. The Performance Gap: Causes & Solutions Available: http://www.greenconstructionboard.org/index.php/resources/performance-gap [accessed May 2014]
    • Gill, Z. M., Tierney,M.I., Pegg, I. M.; and Allan, N. 2011. Measured Energy and Water Performance of an Aspiring Low Energy/Carbon Affordable Housing Site in the UK. Energy and Buildings 2011, 43 (1): 117- 125
    • Zero Carbon Hub, 2014. Closing the Gap between Design and As-Built Performance - End of Term Report accessed at: www.zerocarbonhub.org [accessed May 2014]
    • Crump D., Dengel A., Swainson M., 2009. Indoor Air Quality in Highly Energy Efficient Homes - a Review. NHBC Foundation NF18, IHS BRE Press, London.
    • 8 Monahan, S., Gemmell, A. 2013. How Occupants Behave and Interact with Their Homes. NHBC Foundation 2011 NF35, available online: http://www.nhbcfoundation.org/Researchpublications/tabid/339/Default.aspx [accessed May 2014].
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