Sustainable Passive House Fontana

5019
Last modified by the author on 28/02/2014 - 13:10
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New Construction

  • Building Type : Isolated or semi-detached house
  • Construction Year : 2009
  • Delivery year : 2009
  • Address 1 - street : Via Colli della Farnesina 15/E 06132 PERUGIA, Italy
  • Climate zone : [Csa] Interior Mediterranean - Mild with dry, hot summer.
  • Net Floor Area : 248 m2
  • Construction/refurbishment cost : 100 €
  • Number of Dwelling : 1 Dwelling
  • Cost/m2 : 0.4 €/m2

Certifications :

  • Primary energy need
    11 kWhpe/m2.year
    (Calculation method : UNI TS 11300 )
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
A Passivhaus construction in central Italy, a temperate zone categorized as having cold winters and hot summers, that provides energy savings and reduces environmental footprint in a region where the technological requirements are burdened by the obligation to mitigate risk from high seismic activity. The structure consists in a light and flexible steel and wood beam frame with reinforced concrete dividing walls arranged inside the thermally insulated core that provide additional mass contributing to the passive thermal accumulation. This complex structure guarantees the stability of the building and minimizes kinetic energy resulting from seismic activity contemporary reducing the risk of damages to the airtight envelope. The project is based on the Passivhaus standard to optimize energy consumption, and relying on the Life Cycle Assessment (LCA) method to minimize the impact on the environment. The philosophy of the project. Conceptual: by reference to the use of the golden proportion or ratio as a base for the architectonic geometry of the building, and to the use of the principles of Feng Shui. Architectural: by reference to the use of contemporary and non-vernacular indoor and outdoor design and materials. Environmental: by reference to the use of natural (such as wood, wood wool, aluminum, steel and glass) and/or recycled/recyclable materials, water cycle management, preservation of the permeability of the external surroundings, relocation of centenarian olive trees, reuse of the digging material. Ecological: by reference to the use of a solo ventilation system with heat recovery and subsoil heat exchanger both for heating and cooling, with a small contribution of a heat pump, passive strategies such as winter solar gain, summer solar protection, thermal solar system for domestic hot water (more than 80%), and photovoltaic panels to achieve energy independence with the use of solely self-produced renewable energy sources and such a main contribution to a real “close to zero” building end life environmental impact.

See more details about this project

 http://www.passivhausprojekte.de/index.php?lang=en#k_2929

Stakeholders

Contracting method

General Contractor

Type of market

Realization

Energy consumption

  • 11,00 kWhpe/m2.year
  • 75,31 kWhpe/m2.year

    • UNI TS 11300

Envelope performance

  • 0,19 W.m-2.K-1

    • Exterior wall
    Plasterboard, 25 mm [0,6 W/(mK)]
    Air, 140 mm [0,759 W/(mK)]
    OSB board, 18 mm [0,13 W/(mK)]
    Insulation fiberboard, 280 mm [0,038 W/(mK)]
    Wood, 24 mm [0,13 W/(mK)]
    Airtightening layer, 3 mm
    U-value = 0.119 W/(m2K)

    Basement floor / floor slab
    Gres paving, 14 mm [1,0 W/(mK)]
    Concrete slab, 70 mm [1,8 W/(mK)]
    Polystyrene Styrodur CS 30/35, 180 mm 0,033 W/(mK)]
    Insulated concrete slab, 30 mm [0,093 W/(mK)]
    Concrete slab, 50 mm [1,28 W/(mK)]
    Insulation, 10mm [0,039 W/(mK)]
    ribbed slap, 380 mm [1,655 W/(mK)]
    Concrete slab, 100 mm [1,28 W/(mK)]
    U-value = 0.151 W/(m2K)

    Roof
    Wood, 22 mm [0,13 W/(mK)]
    Air tightening layer, 3 mm
    insulation wood fiber, 280 mm [0,038 W/(mK)]
    insulation fiberboard, 20 mm [0,046 W/(mK)]
    U-value = 0.119 W/(m2K)

    Windows
    U w-value = 0.95 W/(m2K)
    Glazing
    different triple glazing
    with two low-e-coatings and krypton filling
    Spacer: inox spacer
    Manufacturer: Saint Gobain
    average
    U g-value = 0.6 W/(m2K)
    g -value = 51 %

  • 0,67

    • n50

  • 0,44

Real final energy consumption

    50,00 kWhfe/m2.year

Systems

    • Heat pump
    • Others
    • Others
    • Heat pump
    • Solar Thermal
    • Reversible heat pump
    • Others
    • Others
    • Nocturnal ventilation
    • Free-cooling
    • Double flow heat exchanger
    • Solar photovoltaic
    • Solar Thermal
    • Other, specify
    • No renewable energy systems
  • 100,00 %
    •  Double flow cross heat exchanger integrated with Subsoil Heat Exchanger

Smart Building

    Building main performances management and control, for energy consumption reduction and indoor quality living and security increasing

    Heating and cooling management and data control, electric load control, lighting solutions control, security control, PV production monitoring

Urban environment

    Bus stop approx 100 m.

  • 1 700,00 m2
  • 20,00 %

Product

    Double flow cross heat exchanger integrated with Subsoil Heat Exchanger with Subsoil Heat Exchanger

    Ventilation for supply and extract air with heat recovery and subsoil heat exchanger for pre-heating and pre-cooling the intake air

Life Cycle Analysis

    Contribution assessment: comparison between two end-of-life scenarios, in terms of GER (a) and GWP100 (b)

    319

  • 225,00 kWhEP

Water management

  • 150,00 m3

    • Drinking water consumption reduction and reuse of rainwater for water closet and wash machine.
    Rainwater container capacity approx 25 m3.

Indoor Air quality

    Double flow air ventilation system, integrated with Subsoil Heat Exchanger, with three layers of filter.
    The air exchange, the minimization of thermal bridges and the removal of constructive imperfections, the the use of natural materials, contributes to reach a high level of indoor air quality, optimizes the thermo-hydrometric indoor performances and reduces the risks of the presence of air pollutants.

GHG emissions

  • -9,29 KgCO2/m2/year

    • EPD 2007, Eco-indicator 99. In the utilization phase, occupants’ energy consumptions and maintenance of materials for a lifetime of 70 years were taken into account.

  • 16,04 KgCO2 /m2
  • 70,00 year(s)
  • 358,40 KgCO2 /m2

    • EPD 2007 and Eco-indicator 99. The first one includes the characterization stage and the evaluation is carried out on six damage categories: Gross Energy Requirement (GER), Non-Renewable Energy consumption (NRE), Global Warming (GWP), Eutrophication (EP),

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F Francesco Masciarelli
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Francesco Masciarelli

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