Contractor

Name : Sean O'Brien, General Contractor

Contact : Sean O Brien, Ballynastraw, Bunclody, Co. Wexford, Ireland

Construction Manager

Name : Winkens Architecture

Contact : Zeno Winkens, architect MRIAI

 https://www.winkens.ie

Stakeholders

Function : Environmental consultancy

Andrew Lundberg

Andrew Lundberg, [email protected]

 Http:///www.passivate.ie


Passive House Designer

Contracting method

General Contractor

Type of market

Realization

If you had to do it again?

The builder was not used to building low energy dwellings. He was a good builder and needed quite some tutoring. Some of this torturing should have been done earlier in the build.

Building users opinion

We wanted and got a Passive House. The design works well and comfort levels are high throughout the Year.

Energy consumption

• Primary energy need : 40,00 kWhpe/m².year
• Primary energy need for standard building : 40,00 kWhpe/m².year

Calculation method : Other

Breakdown for energy consumption : Annual heating demand 16 kWh /(m2a )
Heating load 10 W/m2
According to PHPP

Envelope performance

More information :

Exterior wall:
Fully insulated cavity wall, with 250 mm expanded polystyrene injected into cavity
U-value = 0.129 W/(m2K)

Basement floor / floor slab:
Concrete floor slab insulated with 300 mm rigid insulation.
U-value = 0.107 W/(m2K)
Roof:
Timber roof construction insulated with 420 mm mineral wool insulation.
U-value = 0.084 W/(m2K)

Frame:
GUTMANN AG, MIRA therm 08
Timber frame with insulation and external aluminium shell
U w-value = 0.87 W/(m2K)

Glazing:
Saint-Gobain glass, CLIMATOP LUX
Triple glazing 52 mm. Glass type 4(6)Gr- safety tempered glass. Warm edge spacer swisspacer.
U g-value = 0.6 W/(m2K)
g -value = 62 %

Entrance door
Solid insulated door
U d-value = 0.86 W/(m2K)

Indicator : n50

• Air Tightness Value : 0,57

More information

With the PV installation, the house needs only 6.73 kWhpe /(m2a ).

Real final energy consumption

Final Energy : 6,73 kWhfe/m².year

Systems

Heating system :
• Geothermal heat pump
Hot water system :
• Heat pump
Cooling system :
• No cooling system
Ventilation system :
• compensated Air Handling Unit
Renewable systems :
• Solar photovoltaic
• Heat pump (geothermal)
Other information on HVAC :

Ventilation :
Brink Climate Systems B.V., Renovent Excellent 300 (Plus)
Heat recovery ventilation system supplying fresh air to all living rooms and extracting from all wet rooms. Effective efficiency of 84%

Heating installation
Air to water heat pump used to underfloor heating distribution.

Domestic hot water
Direct electric water heater from PV panels with air to water heat pump contribution.

24.4 sq.m. of PV panels installed on the roof with an annual electricity yield of the inverter of approx 3678 kWh/a

Solutions enhancing nature free gains :

Reception rooms orientated due south fro solar gain.

Urban environment

Green field Site in rural Ireland. Slightly hilly area.

• Land plot area : 6 500,00 m²
• Built-up area : 4,00 %
• Green space : 5 500,00

Product

Heat pump

Unipipe.ie / Nibe

Unipipe

 https://www.unipipe.ie/


Product category : HVAC, électricité / heating, hot water

Heating system:
Air to water heat pump NIBE F2040 used to underfloor heating distribution.
Hot water , direct electric water heater from PV panels with air to water heat pump contribution.



The stake holder were happy

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Brink MHRV



BRINK

BRINK

 https://www.brinkhrv.com/


Product category : HVAC, électricité / ventilation, cooling

Ventilation:
Brink Climate Systems B.V., Renovent Excellent 300 (Plus)
Heat recovery ventilation system supplying fresh air to all living rooms and extracting from all wet rooms. Effective efficiency of 84%


The stakeholder were happy.

---

External; Windows and Doors



True Windows

True Windows

 http://www.truewindows.ie/


Product category : Finishing work / Exterior joinery - Doors and Windows

Windows:
GUTMANN AG, MIRA therm 08, Timber frame with insulation and external aluminium shell
U w-value = 0.87 W/(m2K) Glazing Saint-Gobain glass, CLIMATOP LUX, Triple glazing 52 mm. Glass type 4(6)Gr- safety tempered glass. Warm edge spacer swisspacer. U g-value = 0.6 W/(m2K) g -value = 62 %


The stakeholder were happy.

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PV Array



Solarelectric.ie

Paul Murphy

 https://www.solarelectric.ie/


Product category : Finishing work / Electrical systems - Low and high current

Electricity:
24.4 sq.m. of PV 15 panels installed on the roof with an annual electricity yield of the inverter of approx 3678 kWh/a


The stakeholders were happy

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Insulation Floor



Hytherm

Hytherm

 https://www.xtratherm.com/


Product category : Structural work / Passive system

Floor:
Strip foundation, concrete floor slab insulated with 300 mm rigid insulation EPS100. 65mm Sudanit 280 Fast Screed U-value = 0.107 W/(m2K)



The stakeholder were very happy with the products

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Insulation Wall



Thermobead

Bunclody Insulations

Product category : Management / Others

Walls: Fully insulated cavity wall, with 250 mm expanded polystyrene (bonded bead) injected into cavity
U-value = 0.129 W/(m2K)



The stakeholder were happy.

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Insulation Ceiling



Isover

Isover

 https://www.isover.ie/


Product category : Management / Others

Roof:
Slated, timber roof trussed construction insulated with 420 mm Isover Heat shield, mineral wool insulation.
U-value = 0.084 W/(m2K) ceiling with suspended service cavity.


The stake holder were happy

---

Thermal Bridging



Passivate

Abdrew Lundberg

 http://www.passivate.ie/


Product category : Structural work / Passive system

Thermal bridging:.
Mix of Irish ACDs, Quinn lite certified details and bespoke. First 2 course of Quinn Lite blocks, low thermal conductivity teplo cavity wall ties. Calculated Y-factor (W/m2K) 0.019


The stakeholders were happy.

Construction and exploitation costs

• Total cost of the building : 330 000 €

Indoor Air quality

A MHRV system is installed.