Lee Evans Partnership LLP St. Mary the Virgin Church, Ashford 16 th September 2014 By John Minter and Patrick Osborne.

Lee Evans Partnership LLP

St. Mary the Virgin Church, Ashford16th September 2014

By John Minter and Patrick Osborne


St. Mary the Virgin Church, Ashford16th September 2014

1. The need for refurbishment

2. St. Mary’s before refurbishment

3. Systems installed

4. Monitoring In Use

5. Lessons Learnt and Future Work


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


The need for refurbishment

There are 374,000 Listed buildings in England, and for refurbishment there are associated risks:

• Historical Significance

• Archaeology

• Moisture


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


St. Mary’s before refurbishment


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)


GSHP


GSHP


Lighting

Low Energy Lighting including LED flood lights


Underfloor heating system


Boiler Room

Dimplex SI24TE Brine/Water Heat Pump

New Potteron Derwent Compact Plus boiler

Kamstrup Multical 402 Meter


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


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


Lee Evans Partnership LLP St. Mary the Virgin Church, Ashford 16 th September 2014 By John Minter and Patrick Osborne.

Documents

refurbishment slide

year slide

meter slide

inadequate slide

later slide

future work slide

patrick osborne slide

refurbishment buildings