Measured data from renewable generation is not yet available.
Pre-development | Forecast | Measured | |
Electricity use | - | 3046 kWh/yr | - |
---|---|---|---|
Natural gas use | - | 10837 kWh/yr | 9171 kWh/yr |
Oil use | - | - | - |
LPG use | - | - | - |
Wood use | - | - | - |
Other Fuel | - | - | - |
Pre-development | Forecast | Measured | |
Primary energy requirement | - | 118 kWh/m².yr | 62 kWh/m².yr |
---|---|---|---|
Annual CO₂ emissions | - | 24 kg CO₂/m².yr | 11 kg CO₂/m².yr |
Annual space heat demand | 180 kWh/m².yr | 40 kWh/m².yr | 40 kWh/m².yr |
Electricity generation | Forecast | Measured |
---|---|---|
Renewables Technology | - | - |
Other Renewables Tech | - | - |
Electricity consumed by generation | - | - |
Primary energy requirement offset by renewable generation | 118 kWh/m².yr | 62 kWh/m².yr |
Annual CO₂ emissions offset by renewable generation | 24 kg CO₂/m².yr | 11 kg CO₂/m².yr |
Whole house energy calculation method | PHPP |
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Other whole house calculation method | - |
Energy target | AECB Silver |
Other energy targets | - |
Forecast heating load | 19 W/m² demand |
Date | Result | |
Pre-development air permeability test | 21 February 2012 | 11.1m³/m².hr @ 50 Pascals |
---|---|---|
Final air permeability test | 21 October 2013 | 2.3m³/m².hr @ 50 Pascals |
Stage | Occupied |
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Start date | 11 February 2013 |
Occupation date | 14 November 2013 |
Location | London London England |
Build type | Refurbishment |
Building sector | Private Residential |
Property type | Semi-Detached |
Construction type | Solid Brick |
Other construction type | Top 3 storeys brick, lower storey lime rendered |
Party wall construction | Solid brick |
Floor area | 170 m² |
Floor area calculation method | Treated Floor Area (PHPP) |
Building certification | AECB silver standard certified building |
Organisation | Arboreal Architecture |
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Project lead person | Arboreal Architecture - Harry Paticas |
Landlord or Client | Anonymous |
Architect | Arboreal Architecture - Harry Paticas |
Mechanical & electrical consultant | Alan Clarke |
Energy consultant | Harry Paticas and Alan Clarke |
Structural engineer | The Morton Partnership |
Quantity surveyor | |
Consultant | Jennings Aldas (Air Leakage Specialist) |
Contractor | Noble & Taylor |
Planned occupancy | Two people with occasional guests. Both occupants have their own home-office. |
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Space heating strategy | Low temperature hot water heating.Gas-fired 12kW condensing boiler. |
Water heating strategy | Unvented hot water cylinder with solar twin coil. |
Fuel strategy | Mains gas. Mains electricity. |
Renewable energy strategy | Solar hot water collectors. 3sqm facing due south. |
Passive Solar strategy | n/a - retrofit of existing listed building. |
Space cooling strategy | Natural cross-ventilation. |
Daylighting strategy | n/a - retrofit of existing listed building. |
Ventilation strategy | Whole house mechanical extract ventilation. |
Airtightness strategy | Continuous air barrier formed by internal lime plaster and poured screed floor with vapour check membrane below. 2nd floor ceiling membrane sealed with tape and mesh to plaster walls. Joist ends and door/window frames sealed with tapes. Grommets installed to all services penetrations. |
Strategy for minimising thermal bridges | Continuous layer of internal insulation. Careful detailing of a range of insulation materials including: aerogel blanket, perlite, technopor, perinsul. |
Modelling strategy | Whole house modelling in PHPP. |
Insulation strategy | Application of Internal wall insulation including: woodfibre, aerogel, IQtherm, PIR, calsitherm, rigid thermoset insulation.Existing concrete slab retained but screed removed and replaced with vacuum insulated panels and lytag screed.2nd floor roof filled with cellulose insulation between TGI joists. |
Other relevant retrofit strategies | Pre-design investigations undertaken to develop an holistic understanding of the existing structure in order to allow a fine grain of design. |
Contextual information | The existing building is Grade II listed. |
Occupancy | Two people with frequent guests. |
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Space heating | Low temperature hot water heating.Gas-fired 12kW condensing boiler. |
Hot water | Unvented hot water cylinder with solar twin coil. |
Ventilation | Whole house mechanical extract ventilation. |
Controls | Digital controller with room temperature compensation, hot water programme and control of solar thermal. Integral isolating and thermostatic radiators valves to all radiators. |
Cooking | Gas hob with electric oven. |
Lighting | LED lighting throughout. |
Appliances | All appliances A+ to A+++ rated. |
Renewable energy generation system | Solar hot water collectors. 3sqm facing due south. |
Strategy for minimising thermal bridges | Continuous layer of internal insulation. Careful detailing of a range of insulation materials including: aerogel blanket, perlite, technopor, perinsul. |
Storeys | 4 |
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Volume | 613m³ |
Thermal fabric area | 376 m² |
Roof description | Insulated 2nd floor ceiling with cold (but windtight) roof above. TGI joists with blown cellulose. |
Roof U-value | 0.15 W/m² K |
Walls description | Internal wall insulation including: woodfibre, aerogel, IQtherm, PIR, calsitherm, rigid thermoset insulation. |
Walls U-value | 0.11 W/m² K |
Party walls description | Solid brick. Party wall returns to external walls insulated (u-value = 0.63). |
Party walls U-value | 1.21 W/m² K |
Floor description | 30mm vacuum insulated panels with lytag screed over. |
Floor U-value | 0.25 W/m² K |
Glazed doors description | Thermally broken (20mm purenit) hardwood frames with single outer glazing and secondary double glazing (argon filled). |
Glazed doors U-value | 1.10 W/m² K uninstalled |
Opaque doors description | Existing door panels upgraded with 30mm VIPs with purenit battens and 10mm VIP sheet. |
Opaque doors U-value | 0.90 W/m² K uninstalled |
Windows description | Existing single glazed sash windows with secondary double glazing (argon filled). |
Windows U-value | 1.25 W/m² K - |
Windows energy transmittance (G-value) | 60 % |
Windows light transmittance | 67% |
Rooflights description | conservation rooflight installed outside of thermal envelope. |
Rooflights light transmittance | - |
Rooflights U-value | - |