Beyond ZeroCarbon Housingexploring solutions to sustainability issues     beyond the zero carbon agenda2 4 th O c t o b e ...
©     Copyright Notice        A l l t h e m a te r i a l i n t h e s e s l i d e sm ay n o t b e u s e d o r re p ro d u c...
Beyond Zero Carbon Policy and PracticeRichard Partington
ZERO CARBON HIERARCHY                                             Zero Carbon =                                           ...
Fabric Energy Efficiency                                    Building fabric U-values                                    Th...
Understanding the BUDGET 2011                                                            CO2 emissions                    ...
STEP 1 2016 FABRIC ENERGY EFFICIENCY                                        STANDARD (FEES)Fabric Energy Efficiency of   3...
STEP 2 2016 CARBON COMPLIANCE  Target Carbon Compliance of 10   kg CO2/m2/year for detached homes                         ...
JOURNEY TO ZERO CARBON                                                    THE 2011 BUDGET CHANGE                          ...
Design vs ‘As-built’:Lessons from TSB Programme
Performance gap‘action is needed by industry and   Government to investigate and tackle the risk of a discrepancy’        ...
Does it do what it says on the tin?
Research Project Overview: Project FocusBlock B: Code forSustainable HomesLevel 3 (using norenewables)Block C: FabricEnerg...
Fabric Performance Investigations         & Observations
In-situ U-value measurementTest gives: In-situ U-value measurementMethodology  Heat flux testing carried out during co-hea...
Thermographic imagingMethod  Internal & external images of the  building fabric taken during the co-  heating testing  Car...
Photographic survey of constructionRecord of actual constructionMethod  Document the construction process  Additional phot...
Co-heating testObservations on implementation  Test carried out in April, at very end  of what is considered the suitable ...
Houses measured by                                Leeds Metropolitan UniversityHeat loss (w / k)                    Whole ...
Drawings and accredited detailsDomestic services commissioning
Drawings and specification
Drawings and specification:claimed use of accredited details
Thermographic imaging
Enhanced, Accredited, Robust?
Construction images                      25
MVHR Installation and Commissioning                                      26
MVHR Installation and Commissioning                                      27
MVHR Installation and Commissioning                                      28
MVHR Installation and Commissioning                                      29
MVHR Installation and Commissioning                                      30
MVHR Installation and Commissioning                                      31
Monitoring: In-use energy consumptionFuel and resource consumption:  Gas, electricity and water  metering  Electric sub-me...
Mind the Gap
Mind the Gap
Derwenthorpe and Temple Avenue
Type A Prototypes
Two MMC construction systemthin bed blockworkstructural insulated paneldesign intention delivered?did systems meet claimed...
Temple Avenue Prototype Houses
Temple Avenue Prototype HousesConstructionCo-heating testThermographyHeat flux measurementSystems efficiencyAir pressure a...
Derwenthorpe Phase One HousesConstructionInner leaf first:watertight earlylarge format insulationinsulation visiblefacing ...
Derwenthorpe Phase One HousesConsistency:Airtightness 2.7–3.0Co-heat test within10% of prototypes
BEST PRACTICE BOOKLETS                                                   NHBC and Zero Carbon HubNHBC Foundation NF 28:htt...
Beyond Zero Carbon Housing - Richard Partington
Beyond Zero Carbon Housing - Richard Partington
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Beyond Zero Carbon Housing - Richard Partington

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A one day symposium on zero/low carbon sustainable homes took place at The University of Nottingham on the 24th October, 2012. The event offered professionals within the construction industry a unique opportunity to gain added and significant insight into the innovations, policies and legislation which are driving the construction of zero/low carbon energy efficient homes both here in the UK and elsewhere in Europe. It explored solutions to sustainability issues “beyond” the zero carbon agenda. BZCH followed on from the successful ‘Towards Zero Carbon Housing’ symposium the University hosted in 2007. This event is part of the Europe Wide Ten Act10n project which is supported by the European Commission Intelligent Energy Europe.

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Beyond Zero Carbon Housing - Richard Partington

  1. 1. Beyond ZeroCarbon Housingexploring solutions to sustainability issues beyond the zero carbon agenda2 4 th O c t o b e r 2 0 1 2 a t T h e U n i v e r s i t y o f N o t t i n g h a mDepartment of Architecture and Built Environment
  2. 2. © Copyright Notice A l l t h e m a te r i a l i n t h e s e s l i d e sm ay n o t b e u s e d o r re p ro d u c e d w i t h o u t t h e ex p re s s p e r m i s s i o n o f t h e a u t h o rs
  3. 3. Beyond Zero Carbon Policy and PracticeRichard Partington
  4. 4. ZERO CARBON HIERARCHY Zero Carbon = Solutions addressing the carbon emission 5% Allowable reductions that are difficult to Complete solutions achieve on site On-site low/zero + Carbon 75% Compliance = carbon energy On-site heat and Complete (and connected heat) power generation + Energy efficiency Building fabric 95% performance CompleteThe Zero Carbon Hierarchy – stepped progress towards a workable definition.
  5. 5. Fabric Energy Efficiency Building fabric U-values Thermal bridging Air permeabilityLZC technology Thermal mass Solar, metabolic, lighting & appliance gains Heat Heating / cooling appliances (boilers, etc) Power Mechanical ventilation Hot water Active controls Fixed lighting All LZC technologies
  6. 6. Understanding the BUDGET 2011 CO2 emissions from unregulated energy use Allowable Solutions Allowable Solutions CO2 emissions from regulated On-site LZC Heat On-site LZC Heat energy use and Power and PowerFabric Energy Efficiency Fabric Energy Efficiency Pre-Budget 2011 Post-Budget 2011
  7. 7. STEP 1 2016 FABRIC ENERGY EFFICIENCY STANDARD (FEES)Fabric Energy Efficiency of 39 kWh/m2/year for apartments & mid terrace 46 kWh/m2/year for end terrace, semi and detached Performance not prescriptive No U-value lists/limits on elements. Uses kWh/m2/yr. For simplicity - space heating and cooling only. Two levels depending on dwelling type However same construction delivers 39 or 46, except in the case of the detached
  8. 8. STEP 2 2016 CARBON COMPLIANCE Target Carbon Compliance of 10 kg CO2/m2/year for detached homes 11 kg CO2/m2/year for attached homes 14 kg CO2/m2/year for apartmentsApproach provides solutions for a range of practical situations: .On gas grid On gas grid Off gas grid Community Heat ‘PV’ ‘Fabric’ Heat Pump Network
  9. 9. JOURNEY TO ZERO CARBON THE 2011 BUDGET CHANGE 25% reduction CO2 emissions from regulated energy 3 31% reduction X 44% use – space and 4 water heating, fans, pumps and fixed lighting 5 100% reduction CO2 emissions from 66 unregulated energy use – cooking and plug-in appliances ZeroCarbon Pre 2010 2010 2013 2016 2016 CO2 emissions CO2 emissions CO2 emissions CO2 emissions from Zero CO2 emissions from a home from a home from a home regulated and from regulated built to 2006 built to 2010 built to 2013 unregulated energy energy use Part L1A Part L1A Part L1A use to be net zero
  10. 10. Design vs ‘As-built’:Lessons from TSB Programme
  11. 11. Performance gap‘action is needed by industry and Government to investigate and tackle the risk of a discrepancy’ 2012 Part L Consultation
  12. 12. Does it do what it says on the tin?
  13. 13. Research Project Overview: Project FocusBlock B: Code forSustainable HomesLevel 3 (using norenewables)Block C: FabricEnergy EfficiencyStandard (FEES)Wide Cavity 13
  14. 14. Fabric Performance Investigations & Observations
  15. 15. In-situ U-value measurementTest gives: In-situ U-value measurementMethodology Heat flux testing carried out during co-heating test in one flat in each block Heat loss measured across north-facing external walls and also party wallsObservations The difference in measured and calculated U-values is similar to tests of this nature A party wall bypass was noted in both blocks 15
  16. 16. Thermographic imagingMethod Internal & external images of the building fabric taken during the co- heating testing Carried out early in the morning to minimise distortion to surface temperaturesObservations Thermographic images reveal weaknesses in the build and design Analysis must be carried out by an experienced person 16
  17. 17. Photographic survey of constructionRecord of actual constructionMethod Document the construction process Additional photography to support air pressure tests, co-heating and commissioningObservations Construction stage for analysis of thermography results at a later stage Specific problems noted during the air pressure test were communicated to site personnel 17
  18. 18. Co-heating testObservations on implementation Test carried out in April, at very end of what is considered the suitable period Active site, so difficult to maintain controlled temperature in adjacent unitsObservations on results Measured heat loss was greater than calculated heat loss Result at higher end of scale of published test results 18
  19. 19. Houses measured by Leeds Metropolitan UniversityHeat loss (w / k) Whole house heat loss - Measured Co-heating versus Predicted
  20. 20. Drawings and accredited detailsDomestic services commissioning
  21. 21. Drawings and specification
  22. 22. Drawings and specification:claimed use of accredited details
  23. 23. Thermographic imaging
  24. 24. Enhanced, Accredited, Robust?
  25. 25. Construction images 25
  26. 26. MVHR Installation and Commissioning 26
  27. 27. MVHR Installation and Commissioning 27
  28. 28. MVHR Installation and Commissioning 28
  29. 29. MVHR Installation and Commissioning 29
  30. 30. MVHR Installation and Commissioning 30
  31. 31. MVHR Installation and Commissioning 31
  32. 32. Monitoring: In-use energy consumptionFuel and resource consumption: Gas, electricity and water metering Electric sub-metering
  33. 33. Mind the Gap
  34. 34. Mind the Gap
  35. 35. Derwenthorpe and Temple Avenue
  36. 36. Type A Prototypes
  37. 37. Two MMC construction systemthin bed blockworkstructural insulated paneldesign intention delivered?did systems meet claimedperformance?was the supply chain robust?interfaces communicated andunderstood ?sub-contractor performanceproduct substitutions and changeswere modelling assumptions correct?lessons for a volume build
  38. 38. Temple Avenue Prototype Houses
  39. 39. Temple Avenue Prototype HousesConstructionCo-heating testThermographyHeat flux measurementSystems efficiencyAir pressure andgas depletionVariable U-value
  40. 40. Derwenthorpe Phase One HousesConstructionInner leaf first:watertight earlylarge format insulationinsulation visiblefacing brick offthe critical path
  41. 41. Derwenthorpe Phase One HousesConsistency:Airtightness 2.7–3.0Co-heat test within10% of prototypes
  42. 42. BEST PRACTICE BOOKLETS NHBC and Zero Carbon HubNHBC Foundation NF 28:http://www.nhbcfoundation.org/Researchpublications/WheretoStartNF28/tabid/444/Default.aspxZCH Best Practice:http://www.rparchitects.co.uk/practice/publications/building-low-carbon-homes-guide-3-icf

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