Passive House Drumderry

  • by Zeno Winkens
  • /
  • 2019-06-17 18:26:11
  • /
  • International
  • /
  • 2952 / EN
  • Building Type : Isolated or semi-detached house
  • Construction Year : 2016
  • Delivery year : 2016
  • Address 1 - street : Drumderry, Bunclody Y21 K8X3 CO. WEXFORD, Ireland
  • Climate zone : [Cbc] Mild, dry winter, warm and wet summer.

  • Net Floor Area : 227 m2
  • Construction/refurbishment cost : 330 000 €
  • Cost/m2 : 1453.74 €/m2

Proposed by :

Certifications :

  • Primary energy need :
    40 kWhpe/m2.year
    (Calculation method : Other )
Energy consumption
Economical buildingBuilding
< 50A
A
51 à 90B
B
91 à 150C
C
151 à 230D
D
231 à 330E
E
331 à 450F
F
> 450G
G
Energy-intensive building

The project brief was to design a CertifiedPassive House on a sloping site in Drumderry. The dwelling is approached frombelow. This family Bungalow achieved Passive House Certification and the Bungalow also has a Irish BER of A1 @ 6.73 kWh/ m2/ yr (Audited result).

This is a single storey family house located in the Irish countryside. The design is contributing minimal impact on the surrounding landscapes, taking advantage of natural daylight and optimising the free heat from the sun.

See more details about this project

 https://www.winkens.ie/passivebc02.htm

Data reliability

3rd part certified

Photo credit

Winkens Archiecture

Contractor

    Sean O'Brien, General Contractor

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

Construction Manager

    Winkens Architecture

    Zeno Winkens, architect MRIAI

Stakeholders

    Environmental consultancy

    Andrew Lundberg

    Andrew Lundberg, andrew@passivate.ie

    Passive House Designer

Contracting method

General Contractor

Owner approach of sustainability

Tight planning constraintsmeant the typical compact form of a low energy house was not possible and amore traditional style house that matched the vernacular style of the area wasmandated by the local authority planners. The challenge was to achieve an ultralow energy house while maintaining the traditional bungalow style dwellingwhich typically has a high envelope surface area to treated floor area ratio.Another important challenge to overcome was how to design traditional detailssuch as stone/granite sills in a wide cavity wall without compromising theenergy performance or creating thermal bridges.

The challenge ofminimising or eliminating the thermal bridging not just at the cill detail butat all junctions throughout the dwelling was achieved by taking an evidencebased approach. The thermal bridging through these junctions were calculated,analysed and continuously tweaked to optimise the overall energy performance ofthe dwelling.  This also included aSurface Temperature Analysis (fRsi calculations) to locate areas in the housethat could be at risk from condensation and mould growth.  Once identified, a strategy was developed tohelp eliminate the risk of surface condensation at these junctions(particularly around window frames) to ensure a healthy clean air qualitythroughout the house.


Architectural description

The success of this project is that by undertaking such a detailed and comprehensive analysis, abuilding who’s form is wholly unsuited to Passivhaus can be guided to achievethe onerous standard without incurring undue expense.

The use of an evidencebased approach combined with the rigorous analysis of thermal bridgecalculations were used to inform key decisions including combining thermallybroken window frames with non thermal broken sliders and screens, while stillachieving passivhaus standards. The project is unique in its development of abespoke method to determine the most cost effective solution to achieve anultra low energy building.

The Clients put theirtrust in new scientific approaches to construction technology, resulting in abuilding which is not only an energy efficient, energy producing machine forliving, it is also a bright, fresh, healthy and happy family home.

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

  • 40,00 kWhpe/m2.year
  • 40,00 kWhpe/m2.year
  • Other

  • 6,73 kWhfe/m2.year
  • Annual heating demand 16 kWh /(m2a )
    Heating load 10 W/m2
    According to PHPP

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

Envelope performance

    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)

  • 0,57

Systems

    • Geothermal heat pump
    • Heat pump
    • No cooling system
    • compensated Air Handling Unit
    • Solar photovoltaic
    • Heat pump (geothermal)

    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

    Reception rooms orientated due south fro solar gain.

Indoor Air quality

    A MHRV system is installed.

Product

    Heat pump

    Unipipe.ie / Nibe

    Unipipe

    Génie climatique, électricité / Chauffage, eau chaude

    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


    Brink MHRV

    BRINK

    BRINK

    Génie climatique, électricité / Ventilation, rafraîchissement

    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

    Second œuvre / Menuiseries extérieures

    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.


    PV Array

    Solarelectric.ie

    Paul Murphy

    Second œuvre / Equipements électriques (courants forts/faibles)

    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


    Insulation Floor

    Hytherm

    Hytherm

    Gros œuvre / Système passif

    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


    Insulation Wall

    Thermobead

    Bunclody Insulations

    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.


    Insulation Ceiling

    Isover

    Isover

    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

    Gros œuvre / Système passif

    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

  • 330 000

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

Parking spaces

Surface parking, 5 cars

Building Environmental Quality

  • Building flexibility
  • indoor air quality and health
  • comfort (visual, olfactive, thermal)
  • energy efficiency
  • renewable energies
  • maintenance
  • integration in the land
  • building process
  • ​Irish BER of A1 and assive House Certification
  • minimal impact on the surrounding landscapes
  • taking advantage of natural daylight
  • optimising the free heat from the sun

Contest categories

Energy & Temperate Climates

Energy & Temperate Climates

Users' Choice

Users' Choice

Green Solutions Awards 2019 - Buildings


Author of the page

  • Zeno Winkens

    Architect


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