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Sgcp13young

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Buro Happold speaking about heat networks on the grid at 5th Smart Grids and Cleanpower Conference Expo 2013 on 5 June in Cambridge, amid over 100 attendees and a massively popular exit-poll from delegates.

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  1. 1. BuroHappoldBuroHappoldThe role of heat networksin future energy scenariosAlasdair YoungBuro HappoldEnergy Sector Director5th Smart Grids & Cleanpower Conference5 June, Cambridgewww.cir-strategy.com/events
  2. 2. BuroHappoldHeat networks:1.  Potential2.  Energy system functions3.  4th generation heat networks4.  Possible transitionIntroduction
  3. 3. BuroHappoldHeat networks – technical potential
  4. 4. BuroHappoldFuture heat networksSeasonalstorageDiurnal storageSystembalancingEnergy sharingIntegratingrenewablesIntegratingheat pumpsWaste heatcaptureLarge scaleheat capture
  5. 5. BuroHappoldSeasonal storage
  6. 6. BuroHappoldDiurnal storage
  7. 7. BuroHappoldSystem balancing•  Danish district heating plants use largeelectric boilers for:•  Using excess, low cost wind power•  Selling grid regulation services§  Skagen DH plant•  4no. 4.7MWe gas fired CHP units•  11MW electric boiler•  4no gas boilers•  4,150m3 thermal store (250MWh)•  2,500 connectionsBach, P (2011) Wind Power and District Heating: New business opportunity for CHP systems: sale ofbalancing services: http://pfbach.dk/firma_pfb/forgotten_flexibility_of_chp_2011_03_23.pdfhttp://www.emd.dk/desire/skagen/Skagen_UK.html30000200015000280005000CHP Gas boiler Industrial heatEnergy from waste Electric boilerSkagen DH heat generation (MWh/yr)
  8. 8. BuroHappoldEnergy sharingBuilding inheating modeBuilding incooling modeHeatPumpHeatPumpElectricity ElectricityHeat @ 55degC Cooling @ 8degCCool pipe @10degCWarm pipe @15degCCool pipe @10degCWarm pipe @15degCBuildingNetwork0%10%20%30%40%50%60%0% 10% 20% 30%%  of  Annual  Heating  DeliveredDESS  Capacity   as  %  of  Peak  CapacityHeating Cooling Design  Pointhttp://www.engineeringsustainability.com/
  9. 9. BuroHappoldWaste heat capture
  10. 10. BuroHappoldCarbon intensity of waste heat supply
  11. 11. BuroHappoldIntegrating heat pumps/renewables
  12. 12. BuroHappoldIntegrating heat pumps
  13. 13. BuroHappoldLarge scale heat capture
  14. 14. BuroHappold4th generation opportunities – reduced temperature operation•  Reduced network cost•  Reduce network losses•  Reduce overheating in corridors /risers•  Supply hot water at 50degC not65degC (Danish systems use45degC)•  Improve central plant efficiencies–  Heat recovery–  Heat pump COP
  15. 15. BuroHappoldGrowth and transitionEstablish schemes•  Connecting buildings togethervia heat networks to form thenucleus of DE schemes•  Relatively small scale systemsNew connections•  Growth in scheme size and heatnetwork extent as furtherbuildings are connectedLoad diversity•  Connecting more diverse heatloads with different demandprofiles•  Enhancing carbon reductionand economic performanceInter-connection•  Interconnection betweensmaller schemesLow carbon sources•  Connection of these largerschemes to larger sources oflow/zero carbon heat•  Use of renewable fuels andwaste heatZero carbon transition•  In time, longer distancetransmission of heat from lowcarbon power stations•  Use of DE systems for energystorage and demandmanagement
  16. 16. BuroHappoldConclusions§  Significant opportunities for heat networks in dense urban areas•  Technical potential is high•  Economic potential function of heat demand, network cost, heatcost§  Heat networks can provide multiple wider energy system services§  Value of energy system services needs to be considered§  Integrated energy system planning required§  Transition to zero carbon is supply constrained
  17. 17. BuroHappoldType 1 heat network§  0.3-3MWe§  CHP units inbuildings§  ~3,000 residentialunits or equivalent§  Examples:§  Barkantine Heat andPower§  King’s Cross
  18. 18. BuroHappold§  3-40MWe§  Dedicated energy centre§  3,000-20,000 residentialunits or equivalent§  Examples:§  Olympic Park§  CitigenType 2 heat network
  19. 19. BuroHappold§  >40MWe§  Multiple heat sources§  Long distancetransmission network§  ~100,000 residentialunits or equivalent§  Examples:§  London ThamesGateway Heat NetworkType 3 heat network
  20. 20. BuroHappoldType 4 heat networks§  >250MWth§  Zero carbon heatsource§  Very long distancetransmission network§  Links multiple Type 2and Type 3 systems§  Examples:§  Vienna§  Link to Thames EstuaryCCS cluster

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