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STRAW RESEARCH, CREATIVITY, INNOVATION AND PROMOTION IN ARGENTINA Leopoldo DIAZ CANO ESBG Strawbale Event RACP Topics 1.Argentine straw building network. 2.The research project. 3.Raw material alternatives and crop areas in Argentina.

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STRAW RESEARCH, CREATIVITY, INNOVATION AND PROMOTION IN ARGENTINA Leopoldo DIAZ CANO

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ESBG Strawbale Event RACP

1.Argentine straw building network. 2.The research project. 3.Raw material alternatives and crop areas in Argentina. 4.Goals of the Argentine straw building network.

Topics

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ESBG Strawbale Event RACP

Argentina: 4 MILLION Has. Wheat

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ESBG Strawbale Event Adriana, Pto. Madryn, Chubut, 2014

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ESBG Strawbale Event RACP Thank You very much, Merci Beacoup, Muchas gracias

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Peter BLOK

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Frank THOMAS (Australie)

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Straw wall Fire Test Strawbuild Bee ROWEN BSEN 1365-1: 2012

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High straw content in the trial plaster mixes did not crack after

  • ne hour

1 : 3 : 3 1 : 3 : 2 1 : 3 : 1 Trial mixes with clay and sand only, cracked after 10 minutes 1 : 3 1 : 4

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TEST WALL : 3m wide by just over 2.6m high,

loaded throughout to 84kN to simulate the loading of a two storey timber framed house 7 courses of bales - compressed by about 15mm per course of bales. 4 posts of 95mm x 95mm at 1000mm centres within the wall, set 175mm back from the exposed face.

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Passive refurbishment of a one family house Mael STECK Franck JANIN

The project

refurbishment of a 96 m² house (built in 1978). Having the

  • pportunity to buy

at reasonable price this well-located house

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Passive refurbishment of a one family house

19 Watertightness

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Passive refurbishment of a one family house

Exterior insulation 20

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aPROpaille

Recognition of straw-bales use in buildings

Arnaud Evrard – UCL / Architecture et Climat

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aPROpaille - Recognition of straw-bales use in buildings

Research partners

  • Dr Ir Arch Arnaud Evrard and Prof André De Herde

Architecture et Climat / LOCI / SST / UCL, Louvain-la-Neuve

  • Ir Gauthier Keutgen and Arch Benjamin Biot

Institut de conseil et d’étude en développement durable – ICEDD, Namur

  • Prof Frédéric Lebeau and Ir Arnaud Louis

Biose / ULg, Gembloux

  • Prof Luc Courard and Ir Arnaud Louis

GeMMe / ULg, Liège

  • Arch Antoine Bonnert

Paille-Tech, Franière

  • Laurence Polain

DGO4 / SPW, Jambes

  • Olivier Dierckx

DGO6 / SPW, Jambes

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aPROpaille - Recognition of straw-bales use in buildings

Measuring thermal conductivity and other hygrothermal parameters

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aPROpaille - Recognition of straw-bales use in buildings

Life Cycle Analysis

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aPROpaille - Recognition of straw-bales use in buildings

Internet platform

www.apropaille.be

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Rénovation d’une maison individuelle Peter VOS Marie-Laure PACQUET Belgique

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STRAW, THERMAL CONCEPTION and PASSIVE HOUSE Franck JANIN, HELIASOL, France

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Introduction

  • My experience in thermal engineering
  • Building passive with straw bales
  • Summer comfort : monitoring of 2 houses during this

really hot summer, this year

  • Heating with wood stove
  • These results and experiences are valid in Lyon/France

area

  • Climate : “semi continental, medium cold 70 kKh (kilo

Kelvin hour / year), 1100 hours equivalent fully sunny per year

Plan

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Thermal engineering

  • Passive house definition
  • Well insulated house with so low heat demand that you

can fulfil it by heating the air supplied by ventilation (hygienic ventilation rate)

  • A passive house of 100 m² will need per year (for

heating)

  • 150 liter of fuel
  • 1500 kWh of electricity
  • 1 stere of wood
  • 1 m3 of stacked wood (length 1 m)
  • 0.6 m3 stacked wood (length 33 cm)

Passive house

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Thermal engineering

  • 38 cm of straw : U = 0.052/0.38

= 0.13 W/m².K

  • With integrated thermal bridge

(up to 10%) (wood skeleton), U < 0.15 W/m².K

  • Passive House recommendation

U < 0.15 W/m².K

  • Straw bale Ok for passive house

in France and most Europe

Straw insulation

38 cm

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Thermal engineering

  • Orientation
  • Bioclimatic
  • Compactness (of the

heated area)

  • Windows triple glazing

welcome with solar factor > 0.6

  • No thermal bridges
  • And …

hd2 Low consumption 50 kWh / m² year (Heating demand) Passive House 15 kWh / m² year (Heating demand)

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Thermal engineering

  • Double flow ventilation

with heat recovery

  • Air tightness
  • n50 < 0.6 volume / hour
  • 4 x better than french

regulation RT 2012

hd2 Low consumption 50 kWh / m² year (Heating demand) Passive House 15 kWh / m² year (Heating demand)

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Thermal engineering

  • Is air tightness mandatory ?
  • Heating demand kWh / m² per year

Ventilation / air tightness 5 10 15 20 25 30 35 40 45 5 10 Simple flow DF + heat recovery N50 volume/hour Example based on values of the passive refurbishment in Valence / France

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Thermal engineering

  • It’s difficult to do something really bad with straw bale

insulation and wood, but take care of basement :

Some details Psi = 0.25 W/m.K Heating demand : 11 kWh/m² New passive house Psi = 0 W/m.K Heating demand : 8 kWh/m² Bad thermal bridge Psi = 0.6 W/m.K Heating demand : 18 kWh/m²

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Summer comfort

  • 2 straw passive houses and a standard house

(1990)

Monitoring

  • Passive refurbishment
  • Location 100 km south Lyon
  • Elevation 164 m
  • One floor
  • Flat roof (straw)
  • Usage : family 4 person
  • No window shutter
  • New Passive
  • 100 km north Lyon
  • Elevation 403 m
  • One floor
  • Attic (ventilated)
  • Not used in July
  • Wood shutter (70%)
  • Standard
  • Lyon suburb
  • Elevation 210 m
  • Two floors
  • Attic
  • Family 4 p
  • Wood shutters
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Summer comfort

  • July temperatures

Results Blue = outside, Black : standard house bedroom Lyon Red : Passive refurb bedroom (South Lyon) Green : new passive bedroom (North Lyon)

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Summer comfort

  • Passive houses, straw insulated are providing a

good level of comfort, even during heatvawes in this region

  • Needed
  • Protect windows from solar radiations
  • Open windows at night when outside temperature is lower
  • Take care of internal heat sources : PC’s light, owen, …
  • Some inertia may help

Conclusion

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zero carbon building element

intelligent design – smart construction!

Thomas Dimov Swisse

, Dipl. Arch. ETH, Zürich

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the product

core layers: light clay filling 50 mm > heat/ moisture buffer/ fire protection tj i timber frame 450 mm > bearing structure straw bales 350 mm > heat insulation light clay filling 50 mm > fire protection cover layers: clay plaster 10 mm > inside surface flax fleece 2 mm > vapour barrier flax fleece 2 mm > wind paper h=250 cm

t=45 cm

  • 1. basic module (wall element , solar)

inside u<0,15 w/ m2k

  • utsid

e building services: heat exchanger > wall heating heat exchanger > solar collector glass cladding > photovoltaic panel

21.8.2015 thomas dimov/ch esbg 2015 montargis/paris - zero carbon building

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THE RESULT OF MONITORING IN FRANCE

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Sensors from Behrens & Krause

The concept

2 instrumented walls 8 sensors by wall an internet connection to recover data 2 instrumented building

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Sensors from Behrens & Krause

House in Morancé (69) near Lyon

2011

Architect : Stéphane Peignier Straw compagny : Batinature

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Sensors from Behrens & Krause

A nursery in Muel (Bretagne)

Architect : Stéphane Peignier Straw compagny : Batinature

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Sensors from Behrens & Krause

Results

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Sensors from Behrens & Krause

Analysis - Outputs

Start date Duration … … … …

Potential mould growth

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Le GABION MONITORING

ESBG 2015

Two monitoring experiences :

1) drying and rain influence of 4 different coatings on straw bales

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gypsum plaster,

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2 earth + 1 gypsum plaster,

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CL

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NHL 2) Monitoring of an experimental building

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Monitoring of an experimental building

Gy

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