ALFARO LAIF

  • by david medina
  • /
  • 2019-06-10 19:33:16
  • /
  • International
  • /
  • 3140 / EN
  • Building Type : Isolated or semi-detached house
  • Construction Year : 2019
  • Delivery year : 2019
  • Address 1 - street : ARAMAR 101 66036 FRACC CUMBRES LA RIOJA, GARCÍA NL, Mexico
  • Climate zone : [Cwa] Mild, dry winter, hot and wet summer.

  • Net Floor Area : 95 m2
  • Construction/refurbishment cost : 53 824 €
  • Cost/m2 : 566.57 €/m2

Proposed by :

Certifications :

  • Primary energy need :
    110 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 5 residential housing project consist in two floor plan building oriented EAST TO WEST, located in Garcia, Nuevo Leon, Mexico in warm weather and high humidity in summer. They are the first 5 passive house that achieve the Classic standar in México.


PROJECT CHALLENGE
The project is the first foreground of efficient buildings in Mexico that can reduce up to 84% of CO2 emissions to the atmosphere by integrating an optimized thermal envelope in a climate zone where the overcost of energy efficiency measures competes with today's market. They are the first houses to achieve high energy efficiency standards of Passive Haus and are a cultural precedent of efficient use and energy and water savings for the user.

It is intended to compare the design of traditional homes with those designed from construction systems with low thermal transfer, specialized window with high solar factor, ventilation with heat and energy recovery, free of bridges energy saving water use and renewable energy use. In this way you can verify the percentage of energy savings that can be obtained by improving the thermal envelope and making design decisions with a sustainable approach, optimizing resources according to orientation and cost benefit.

See more details about this project

 https://passivehouse-database.org/index.php?lang=en#d_6024

Data reliability

3rd part certified

Contractor

    ALTTA HOMES NORTE S. DE R.L. DE C.V.

    Calle Matamoros No.1236 Col. Centro, Monterrey, N. L.

Construction Manager

    ARQ. DAVID MEDINA RANGEL

    dmedina[at]sadasi.com

Stakeholders

    Assistance to the Contracting Authority

    ING. OSCAR EDGARDO VILLAGRÁN GUEVARA

    ovillagran[at]sadasi.com


    Structures calculist

    INCLAR Ingeniería de Clima Artificial / Altta Homes Norte


    Thermal consultancy agency

    Martha Isabel Arreola Rangel

    marthaiar79[at]hotmail.com

Owner approach of sustainability

Derived from the United Nations Sustainable DevelopmentGoals for the World in the Alfaro Laif Project it is promoted that:1) Energy is one of the major contributors toclimate change, and account for about 60% of global greenhouse gas emissions.2)Implementingenergy efficient standards contributes more than 14% to reducing electricityconsumption in buildings and industry.

The proposal of the project of 5 pilot homes in NuevoLeón for the LAIF program aims to promote energy efficient buildings tocontribute to the mitigation of greenhouse gas emissions and energy savings forheating and cooling in this hot climate zone, as the energy demand is very highand cooling is normally used to maintain the comfort temperature in allconstructed spaces.

Energy consumption

  • 110,00 kWhpe/m2.year
  • Other

    Annual heating demand 5 kWh /(m2a ) calculated according to PHPP
    Heating load 18 W/m2

    Cooling load 10 W/m2
    Cooling and dehumidification demand 33 kWh /(m2a ) calculated according to PHPP

    Generation of renewable energy: 23 kWh /(m2a ) based on the projected area
    Renewable energy demand (PER demand according to PHPP): 84 kWh /(m2a ) on heating installation, domestic hot water, household electricity and auxiliary electricity

Envelope performance

    Exterior wall: U-value = 0.288 W/(m2K) (average)
    Basement floor / floor slab: U-value = 0.364 W/(m2K)
    Roof: U-value = 0.194 W/(m2K)
    Frame: U w-value = 1.328 W/(m2K)
    Glazing: U g-value = 1.5 W/(m2K) - g -value = 28 %
    Entrance door: U d-value = 1.011 W/(m2K)

    Envelope description:
    - Exterior wall:
    1.Exterior Masonary concrete block with Termosil and insulating foam XPS 3"=75 mm λ=0.029W/mK. Exterior finishing: mortar and thermal crestuco and interior plaster.
    2. The same Masonary concrete block with quarry stone in facade.
    3. Adjacent Masonary concrete block with insuliting EPS 5" without termosil.

    - Basement floor / floor slab:
    1- Concrete Foundation 4"=100mm λ=1.74W/mK
    2- Covered insulating foam xps 3"=75mm λ=0.029 W/mK
    3- adhesive
    4- Ceramic floor

    - Roof:
    Concrete Slab of joist and vault 13-57/64"=353mm composed by:
    1- Roof Waterproofing MasterSeal 780 BASF 0-1/8"=3mm λ=0.073 (EQUAL LAYER)
    2- Roof Pasty Termocret 2"=50mm λ=0.076 (EQUAL LAYER)
    3- Covered Insulating Foam XPS 4"=100mm λ=0.029 (EQUAL LAYER)
    4- Concrete Compression Layer 0-5/32"=40mm λ=1.74 (EQUAL LAYER)
    5- Concrete Joist and Polystyrene Vault(EPS) Composed by:
    5a- Steel Reinforced Concrete 4"=100mm λ=1.74 (NOT EQUAL LAYER)
    5b- Polystyrene Vault(EPS) 4"100mm λ=0.041 (NOT EQUAL LAYER)
    5c- Sheet Polystyrene Vault(EPS)indoor 2"=50mmm λ=0.041 (EQUAL LAYER)
    6- Plaster Finish 0-25/64"=10mm λ=372 (EQUAL LAYER)

    - Frame:
    REHAU, Geneo M72 H57
    Window Profile PVC White color, thickness=0.13m. It is consider an average U value as the installed windows.

    - Glazing:
    Manufacturer Saint Gobain
    Product Name COOL-LITE SKN 154 II
    glazing composed by:
    1- layer 1 glass Planiclear 1/4"=6mm
    2- layer 2 Air between glasses 1/2"=12.70mm
    3- layer 3 glass Planilux 1/4"=6mm

    - Entrance door:
    Manufacturer Masonite
    Product Name Belleville
    Front Door made with fiberglass, WallNut Color, Widht 35-7/16"=900mm Height 83-55/64"=2130mm Thickness 1-3/4"=44mm
    wooden frame, WallNut color, thickness 2"=50mm

  • 0,60

Systems

    • Heat pump
    • Gas boiler
    • Solar Thermal
    • No cooling system
    • Double flow heat exchanger
    • Solar Thermal

    Domestic hot water Solar Heater
    -Manufacturer AXOL, Product Name MS 2.5 Blue
    -Storage Tank capacity 240L
    -Surface Solar Collector 2.33m2
    -Located on Rooftop

    Generation of renewable energy: 23 kWh /(m2a ) based on the projected area
    Renewable energy demand (PER demand according to PHPP): 84 kWh /(m2a ) on heating installation, domestic hot water, household electricity and auxiliary electricity

Water management

    Water Saving Devices:
    -Toilets máximum consumption 3.8 Lpd
    -Energy saving faucets 6 Lpm consumption
    -Ecological grade watering cans 3.8 Lpm consumption
    -Sectioning valves washbasins, sink, toilet, water heater and water tank.

Indoor Air quality

    The project is calculated to reduce CO2 about 84.19%.

Health & Comfort

    Dehumidifier MIDEA to achieve confort at the highest percentage of humidity.

Product

    Termosil

    Termolia

    Second œuvre / Cloisons, isolation

    Termosil is expanded mineral perlite treated with silicone. It is used for the insulation of walls made of termoblock or of traditional block. Comparing the insulating factor, characteristics and costs obtained with Termosil, an excellent cost-benefit relation is achieved. The purpose of the silicone is to achieve a waterproof condition, avoiding in this way problems that could arise as a result of water leaks in walls and slabs.


    MasterSeal 780

    BASF

    Second œuvre / Peinture, revêtements muraux


    Geneo M72 H57

    REHAU

    Second œuvre / Menuiseries extérieures


    COOL-LITE SKN 154 II

    Saint-Gobain

    Second œuvre / Menuiseries extérieures


    Belleville

    Masonite

    Second œuvre / Menuiseries extérieures


    WS 160 FLAT ET

    MAICO

    Génie climatique, électricité / Ventilation, rafraîchissement


    Xpower Ultra Inverter 53UTQ123A

    Carrier

    Génie climatique, électricité / Chauffage, eau chaude


    MS 2.5 Blue

    AXOL

    Génie climatique, électricité / Chauffage, eau chaude


    COXDPI-16

    Calorex

    Génie climatique, électricité / Chauffage, eau chaude

Construction and exploitation costs

    Construction costs: 755 €/m2 Treated Floor Area

    Building structure costs (gross): 568 €/m2 Treated Floor Area

Urban environment

The project site is considered within the urbancontainment perimeter defined by Law in a new area where all water and electricity services, hospitals, schools and shopping centers are available and is part of a set of townhouses in a closed residential-level split.

Building Environmental Quality

  • indoor air quality and health
  • comfort (visual, olfactive, thermal)
  • energy efficiency
  • products and materials
  • Energy efficiency: no cooling system + solar thermal system
  • Low cost for a passive house: 567 €/m2
  • Good confort: ventilation

Contest categories

Energy & Hot Climates

Energy & Hot Climates

Low Carbon

Low Carbon

Users' Choice

Users' Choice

Green Solutions Awards 2019 - Buildings


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