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Best Practice Actions in the University of St Andrews 5 th February 2013

Best Practice Actions in the University of St Andrews 5 th February 2013 Dr John Smith, Building Manager, North Haugh. Proposed centralised water recirculating cooling unit for lab equipment What we have implemented. Water Recirculating System. Existing New Piped Gases. Gases.

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Best Practice Actions in the University of St Andrews 5 th February 2013

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  1. Best Practice Actions in the University of St Andrews 5th February 2013 Dr John Smith, Building Manager, North Haugh

  2. Proposed centralised water recirculating cooling unit for lab equipment What we have implemented Water Recirculating System

  3. Existing New Piped Gases Gases

  4. Run around coils on fume extracts – tried first in UK at MSB Fume Heat Reclaim View glass to check condition of zinc coated copper coils

  5. Fume Heat Reclaim MSB =7 Run around coils on fume extracts BSRC = same but coils coated to common header and preheat coil on with Blygold main teaching classroom AHU

  6. Energy Costs

  7. Fume Cupboards * Out to tender

  8. Fume Cupboards Premier – glass lined Only one bank 24hrs operation General - separate AHU for each lab to minimise air flow

  9. Automatic Fume Cupboard Sash Closer • Upgrading Fume Cupboards • Automatic sash closer with presence detection • Schneider closer fitted by Premier Labs - developed for St Andrews • Sash user controlled by push button • Presence detection lowers sash if user is away from cupboard for more than 10 minutes • Retrofitted to existing fume cupboards

  10. Automatic Fume Cupboard Sash Closer • AFTER • Sashes always closed at night, and for long periods during the day • User acceptance crucial – selling the energy message • Powers up in 2 stages to 200mm & 500mm. Users find 200mm adequate • Trialled at prestigious lab for best roll out • Salix funded £9,468 for 9 sashes • Saving 19.5 tCO2/yr • Saving over 50% supply air • Saving in running cost £3,268 • 2.9 yr technical payback • BEFORE • Sash manual operation by users • Observation shows sashes left open at night and over 500mm minimising containment.

  11. Automatic Fume Cupboard Sash Closer • Comments • Energy calculations based on reduction of supply make-up air • Electricity at 8.8p/kW, heat at 3.25p/kWh averaged over payback period • Evaluation process under way from actual data from lab supply air handling unit – temps / air flow rate / fan power / heating coil energy

  12. Fume Cupboard Calculations

  13. North Haugh Building Complex

  14. CHP Engine – BMS Annexe

  15. Energy Costs

  16. Helium Recovery Environmental Driven Energy Saving Resource Dwindling ‘Run Out In About 15 Years’

  17. Helium Recovery

  18. Helium Recovery

  19. Helium Recovery Unit Liquid helium used to cool EPR samples, liquid supplied from BOC at a cost of £864 per 120 litres (weekly) Gas collected in a balloon, pressurised into cylinders. Cylinders transported to a helium cryogenic plant in Physics. Liquid used in Physics Cost of unit £28,380. Electrical installation cost £2,500. Total = £30,880 Recovery 50% saving of £432 per dewar Payback of 1.5 years Note: Due to problem with world supply, delivery cut to fortnightly

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