Kingsley Passivhaus : Project images
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Energy and fuel use
Renewable electricity generation This project has used the contributions from renewable electricity generation equipment to either meet the Retrofit for the Future target or otherwise reduce the Primary energy requirement and CO₂ emissions associated with the project.
Measured data from renewable generation is not yet available.
Fuel use
| Pre-development | Forecast | Measured | |
| Electricity use | 2000 kWh/yr | 2000 kWh/yr | 2195 kWh/yr |
|---|---|---|---|
| Natural gas use | 6400 kWh/yr | 1960 kWh/yr | 1926 kWh/yr |
| Oil use | - | - | - |
| LPG use | - | - | - |
| Wood use | - | - | - |
| mains gas | - | - | - |
| Pre-development | Forecast | Measured | |
| Primary energy requirement | 126 kWh/m².yr | 74 kWh/m².yr | 79 kWh/m².yr |
|---|---|---|---|
| Annual CO₂ emissions | 26 kg CO₂/m².yr | 16 kg CO₂/m².yr | 17 kg CO₂/m².yr |
| Annual space heat demand | 80 kWh/m².yr | 16 kWh/m².yr | - |
Renewable energy
| Electricity generation | Forecast | Measured |
|---|---|---|
| PV | 3000 kWh/yr | 3000 kWh/yr |
| Other Renewables Tech | - | - |
| Electricity consumed by generation | - | - |
| Primary energy requirement offset by renewable generation | -3 kWh/m².yr | 2 kWh/m².yr |
| Annual CO₂ emissions offset by renewable generation | -2 kg CO₂/m².yr | -1 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 | 01 March 2016 | 0.27m³/m².hr @ 50 Pascals |
Project description
| Stage | Occupied |
|---|---|
| Start date | 01 February 2015 |
| Occupation date | 02 April 2016 |
| Location | Kingsley Cheshire England |
| Build type | Refurbishment |
| Building sector | Private Residential |
| Property type | Semi-Detached |
| Construction type | Masonry Cavity |
| Other construction type | 200 |
| Party wall construction | 230mm solid brick |
| Floor area | 98 m² |
| Floor area calculation method | Treated Floor Area (PHPP) |
| Building certification |  Passivhaus certified building |
Project Team
| Organisation | Chris Copeman |
|---|---|
| Project lead person | Chris Copeman |
| Landlord or Client | Chris Copeman and family |
| Architect | Gil Shalom |
| Mechanical & electrical consultant | |
| Energy consultant | Green Building Store |
| Structural engineer | |
| Quantity surveyor | |
| Consultant | |
| Contractor | Chris Copeman |
Design strategies
| Planned occupancy | Three people, all out to work or school on weekdays. |
|---|---|
| Space heating strategy | Heating from mains gas fired boiler feeding radiators |
| Water heating strategy | Combi Boiler |
| Fuel strategy | Mains Gas. |
| Renewable energy strategy | 4kw Photovoltaic panels- split east/west array |
| Passive Solar strategy | Window proportions optimised using PHPP. |
| Space cooling strategy | Daytime use of MVHR with night purging during heat waves. |
| Daylighting strategy | |
| Ventilation strategy | *Comfort ventilation with heat recovery (winter) * Openable windows (summer) |
| Airtightness strategy | Limeplaster on walls sealed to floor with tape and to windows. All joists and rafters sanded primed and taped at air barrier junction.Proclima intello intelligent membrane used behind service void to seal roof. Party wall foam filled to ensure airtightness and mitigate thermal bypass.Final test 0.27ach |
| Strategy for minimising thermal bridges | Inner leaf of cavity wall underpinned with foamglas blocks to provide continuity with cavity insulation and underfloor insulation. Windows hung outside existing walls in-line with the external insulation. |
| Modelling strategy | Whole house modelling was undertaken in PHPP. |
| Insulation strategy | 200mm Graphite EPS external insulation on to filled cavity walls. 100mm PIR board over rafters with 100mm wool batts between rafters and 50mm in service void. 300mm EPS under new 100mm slab. 100mm wool batts on party wall. |
| Other relevant retrofit strategies | |
| Contextual information | Raising the roof with insulation over rafters was tricky as the house is a semi. A secret gutter was installed to enable this junction. |
Building services
| Occupancy | Three people. |
|---|---|
| Space heating | SEDBUK A-rated mains gas condensing boiler. |
| Hot water | Combi gas Boiler |
| Ventilation | Paul Focus 200 with rigid steel Lindab ducting |
| Controls | Room thermostat |
| Cooking | Electric induction hob and oven |
| Lighting | LEDs |
| Appliances | A+ Rated fridge, freezer and washing machine to |
| Renewable energy generation system | 4kw PV panels. Split East West array |
| Strategy for minimising thermal bridges | Psi values have been calculated for internal and external values. External psi-value have been entered into PHPP. |
Building construction
| Storeys | 3 |
|---|---|
| Volume | - |
| Thermal fabric area | - |
| Roof description | |
| Roof U-value | - |
| Walls description | |
| Walls U-value | - |
| Party walls description | |
| Party walls U-value | - |
| Floor description | |
| Floor U-value | - |
| Glazed doors description | |
| Glazed doors U-value | - - |
| Opaque doors description | |
| Opaque doors U-value | - - |
| Windows description | |
| Windows U-value | - - |
| Windows energy transmittance (G-value) | - |
| Windows light transmittance | - |
| Rooflights description | |
| Rooflights light transmittance | - |
| Rooflights U-value | - |