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Getting to Zero Carbon Heather Stamp Low Carbon R&D Manager National Energy Services . Code for Sustainable Homes. ENE 1 – DER, TER, TFA ENE 2 – HLP (box 38 in SAP)
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Getting to Zero CarbonHeather StampLow Carbon R&D Manager National Energy Services
ENE 1 – DER, TER, TFA ENE 2 – HLP (box 38 in SAP) ENE 7 – CO2 emissions for space heating, water heating, fans and pumps and lighting, CO2 emissions reduction from LZC technologies Plan Assessor Outputs
Building Regs 2006 Best Practice Standard Insulation Code Level 3 – 25% lower DER Advanced Standard Insulation Code Level 4 – 44% lower DER Code Level 5 – zero DER Code Level 6 – zero total CO2 Getting to Zero Carbon
Semi Detached House East Pennines 88 square metre floor area Gas A rated combi boiler Partial cavity fill, AAC blocks & U = 0.29 Roof: 300m insulation U = 0.14 Windows: Double glazed super low E argon U = 1.8 Thermal bridging y = 0.08 Air Permeability 9 m3/hm2 Base Case Regs 2006
0.125kWp per m2 of PV panel area Maximum roof area 28m2 Remainder must be off site Running costs highly dependent on pence per unit for exported electricity Wind turbines better done centrally as output related to (wind speed)3 and speeds are low and variable in many cases Photovoltaics & Wind Turbines
Reduce demand before adding renewables A** rated appliances Low Energy Appliances
Maximise fabric improvements Minimise electricity consumption Level 4 achievable with solar thermal Level 5 needs PV over remaining whole roof area Level 6 requires off site generation Carbon strategy + running cost info Key Conclusions
Measuring zero carbon Ratings not sensitive to appliances, power showers, spray taps etc. Cost per unit of exported electricity High cost per unit of low carbon options High capital costs of low carbon technologies Consumers need fuel bill estimates too Also focus on demand reduction as well as design Key Issues / Questions