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St. Mary the Virgin Church, Ashford 16 th September 2014

St. Mary the Virgin Church, Ashford 16 th September 2014. By John Minter and Patrick Osborne. St. Mary the Virgin Church, Ashford 16 th September 2014. The need for refurbishment St. Mary’s before refurbishment Systems installed Monitoring In Use Lessons Learnt and Future Work.

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St. Mary the Virgin Church, Ashford 16 th September 2014

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  1. St. Mary the Virgin Church, Ashford 16th September 2014 By John Minter and Patrick Osborne

  2. St. Mary the Virgin Church, Ashford 16th September 2014 The need for refurbishment St. Mary’s before refurbishment Systems installed Monitoring In Use Lessons Learnt and Future Work

  3. The need for refurbishment • Buildings are responsible for around 40% of the UK’s GHG (greenhouse gas) emissions • There are 1.8 million non-domestic buildings, built at or below current building regulations. These will most likely still be in use in 2050, if not later

  4. The need for refurbishment • There are 374,000 Listed buildings in England, and for refurbishment there are associated risks: • Historical Significance • Archaeology • Moisture

  5. St. Mary’s before refurbishment • Consuming 200,000kWh a year for heating • Hot water provided by local electric hot water heaters • Inefficient lighting system • Inefficient boilers - on cold days could only get the church 14°C, and cost £9,500 a year in gas bills • Approximate Carbon footprint 38.8 tonnes of CO2 per year

  6. St. Mary’s before refurbishment

  7. Measures installed • Low Carbon systems include: • GSHP bore holes • Rainwater harvesting • LED Lighting • Innovative underfloor heating system • Predicted to lead to a Carbon footprint reduction of 33% • (to 26.1 tonnes per year)

  8. GSHP

  9. GSHP

  10. Lighting Low Energy Lighting including LED flood lights

  11. Underfloor heating system

  12. Boiler Room KamstrupMultical402 Meter Dimplex SI24TE Brine/Water Heat Pump New PotteronDerwent Compact Plus boiler

  13. Monitoring in use • Sub metering of the GSHP • Increased use of the space as a venue means it is difficult to compare the before and after • Total emissions after refurbishment equate to 39.7 tonnes per year • Feedback from the client suggests that the space can be kept at a comfortable temperature, whilst before the heating system was inadequate

  14. Lessons learnt and future work • Radial GSHP bores allow difficult sites to have low carbon heating • The LED lighting is particularly successful – saving money and energy • Reviewing systems is important to ensure CO2 savings are realised • Further monitoring of the delivered temperature for the underfloor heating is proposed for Winter 2014

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