Coventry Eco House
Download
as PDF A project vision for Coventry & Warwickshire FORCE Group to design and build two 3 bedroom detached houses for Orbit Homes that met the needs of the local community and to comprehensively assess the effects of building to UK Code Level 6 and to Passivhaus standard within a restricted budget. Both houses have received Passivhaus certification and one built to Code Level 6.
Coventry Eco House : Project images
Click on image to preview full size
Energy and fuel use
Measured data from renewable generation is not yet available.
Fuel use
| Pre-development | Forecast | Measured | |
| Electricity use | - | 6050 kWh/yr | - |
|---|---|---|---|
| Natural gas use | - | - | - |
| Oil use | - | - | - |
| LPG use | - | - | - |
| Wood use | - | - | - |
| Other Fuel | - | - | - |
| Pre-development | Forecast | Measured | |
| Primary energy requirement | - | 101 kWh/m².yr | - |
|---|---|---|---|
| Annual CO₂ emissions | - | 24 kg CO₂/m².yr | - |
| Annual space heat demand | - | 16 kWh/m².yr | - |
Renewable energy
| Electricity generation | Forecast | Measured |
|---|---|---|
| Renewables Technology | - | - |
| Other Renewables Tech | - | - |
| Electricity consumed by generation | - | - |
| Primary energy requirement offset by renewable generation | 101 kWh/m².yr | - |
| Annual CO₂ emissions offset by renewable generation | 24 kg CO₂/m².yr | - |
Calculation and targets
| Whole house energy calculation method | PHPP |
|---|---|
| Other whole house calculation method | - |
| Energy target | PassivHaus |
| Other energy targets | - |
| Forecast heating load | 10 W/m² demand |
Airtightness
| Date | Result | |
| Pre-development air permeability test | - | - |
|---|---|---|
| Final air permeability test | - | 0.55m³/m².hr @ 50 Pascals |
Project description
| Stage | Occupied |
|---|---|
| Start date | 18 March 2013 |
| Occupation date | 11 November 2013 |
| Location | Coventry West Midlands England |
| Build type | New build |
| Building sector | Public Residential |
| Property type | Semi-Detached |
| Construction type | Softwood frame |
| Other construction type | Beattie Passive timber frame construction |
| Party wall construction | |
| Floor area | 149.8 m² |
| Floor area calculation method | Treated Floor Area (PHPP) |
| Building certification |  Passivhaus certified building |
Project Team
| Organisation | Orbit |
|---|---|
| Project lead person | Orbit/ Beattie Passive |
| Landlord or Client | Orbit |
| Architect | ASD Architecure |
| Mechanical & electrical consultant | Building Services - Total Home Environment |
| Energy consultant | Helen Brown, Encraft |
| Structural engineer | |
| Quantity surveyor | |
| Consultant | Certifier - BRE |
| Contractor | Beattie Passive Construction Ltd |
Design strategies
| Planned occupancy | Six (6) |
|---|---|
| Space heating strategy | Vokera Linea One, Combi wall condensing gas boiler, 89.2% efficiency, supplying hot water and space heating |
| Water heating strategy | |
| Fuel strategy | |
| Renewable energy strategy | |
| Passive Solar strategy | |
| Space cooling strategy | |
| Daylighting strategy | |
| Ventilation strategy | Ventilation: Genvex GES Energy 1 MVHR, 76% efficiency |
| Airtightness strategy | |
| Strategy for minimising thermal bridges | |
| Modelling strategy | |
| Insulation strategy | |
| Other relevant retrofit strategies | |
| Contextual information |
Building services
| Occupancy | |
|---|---|
| Space heating | |
| Hot water | |
| Ventilation | |
| Controls | |
| Cooking | |
| Lighting | |
| Appliances | |
| Renewable energy generation system | |
| Strategy for minimising thermal bridges |
Building construction
| Storeys | |
|---|---|
| Volume | - |
| Thermal fabric area | - |
| Roof description | Beattie Passive Cold Pitched Roof 244mm with 100mm K5: 9.5mm Chipboard, 100mm Kooltherm K5EWB, 18mm chipboard, 12mm Versapanel, Low thermal res Platinum Ecobead 47mm, High thermal res Platinum ecobead 150mm, Low thermal res Platinum Ecobead 47mm, Polythene, 10mm Versapanel, 12.5mm Gyproc Duplex wallboard |
| Roof U-value | 0.08 W/m² K |
| Walls description | Beattie Passive Walls 244mm with 100mm K5: Brick 103mm, Kooltherm K5EWB 100mm, Versapanel 12mm, Low thermal res Platinum Ecobead 47mm, High thermal res Platinum ecobead 150mm, Low thermal res Platinum Ecobead 47mm, Versapanel 12mm, Polythene, Gyproc wallboard 12.5mm |
| Walls U-value | 0.08 W/m² K |
| Party walls description | |
| Party walls U-value | - |
| Floor description | Suspended ground floor, Beattie Passive Floor slab: Platinum Ecoslab foundation 100mm, Platinum Ecobead 100mm, 25% concrete Platinum Ecobead 47mm, 12.1% concrete Platinum Ecobead 100mm, 16.7% timber Platinum Ecobead 47mm, Chipboard 18mm, Platinum floorshield 25mm, Chipboard 22mm |
| Floor U-value | 0.07 W/m² K |
| Glazed doors description | Munster Passiv Futureproof uPVC |
| Glazed doors U-value | - installed |
| Opaque doors description | Munster Passiv Futureproof uPVC |
| Opaque doors U-value | 0.79 W/m² K installed |
| Windows description | Munster Passiv Futureproof uPVC |
| Windows U-value | 0.75 W/m² K - |
| Windows energy transmittance (G-value) | 61 % |
| Windows light transmittance | - |
| Rooflights description | |
| Rooflights light transmittance | - |
| Rooflights U-value | - |