Den Integrerede Renovering Proces (IRP) · –Can we get this modern look in “Scenario 2”?...

Den Integrerede Renovering Proces (IRP) Et supportværktøj mod bæredygtige hjem

Strategisk Energiplanlægning 2.0: Omstilling af energien i områder uden kollektiv energiforsyning

27 november 2014

Nicolas Galiotto

Bæredygtighedskonsulent, ph.d. Årstiderne Arkitekter

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Introduction

Final energy use

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www.kyotherm.com

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-50%

-42%

-19%

-25%

-42%

-46%

Danish building regulations & energy requirements

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Energy renovation

Energy renovation

Focus on energy and economy (quantitative values)

- Improve energy performance of the building

- Economically interesting

Qualitative aspects are often seen as secondary benefits

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www.o-e-s.co.uk

Reasons for completing home renovation

7 Source: Adjei 2011

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In 2010, we had in the European Union:

• < 1% of the building stock renovated yearly

• ~95% were minor or conventional energy renovations

• ~5% were deep energy renovations

Until 2050, in order to comply with the EU goals, we need:

• ~2,5% of the building stock renovated yearly

• ~90% of deep to nearly zero energy renovations

• ~10% of minor or conventional energy renovations

Potential in the energy renovation sector

Barriers to energy renovation

– Politico-economic barriers

– Technical barriers

– Behavioural barriers

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www.cena1212.wordpress.com

Politico-economic barriers are being addressed by policy makers and market developers.

Most technical barriers are being addressed by the building industry.

Behavioural barriers directly impact building owners, occupants and professionals.

Examples of behavioural barriers

• Limited knowledge

• Lack of interest

• Lack of guidance

• Lack of confidence

• Lack of social and emotional understanding

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Hypotheses

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Could a more holistic methodology be the key in overcoming behavioural barriers to high performance home renovation? Could we integrate the home occupants in the centre of the decision-making process using an adapted language?

Overcoming barriers to energy renovation

• Need for contributions from all parties • Need for interdisciplinary collaborations

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The concept of sustainable renovation

• More holistic approach

• Better integrate building occupants

• One-step and stepwise renovation

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More focus on immaterial aspects of sustainability

Decision-making problem

What is the best renovation scenario?

– Non-expert decision makers

– Homeowners very involved

– Homeowners very emotional

– Small project with few resources

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Decision support methods applicable to sustainable renovation

SEMI-STRUCTURED PROBLEM

Selection of the best renovation scenario

CRITERIA Multiple conflicting

Both qualitative and quantitative Candidate to be solved by multi-criteria decision-making

methods (MCDM)

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What are multi-criteria decision-making methods used for?

• Purpose: Identify the most appropriate solution out of a set of

alternatives • Specificity: Alternatives are characterised by multiple and possibly

conflicting attributes. • Categories: Support or optimisation

– Organise information for decision situations – Add structure to decisions – Interact between decision makers – Expand the decision maker's horizons

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The Integrated Renovation Process (IRP)

The Integrated Renovation Process

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• Decision support tool

• Adapted to non-expert decision makers

• User customised

• Makes benefits from quality renovations clear and assessable

• Encourage communication between project stakeholders

• Encourage knowledge discovering

The Integrated Renovation Process

Iterative process in 3 phases:

• Study of homeowners’ values and house profiling

• Generation and evaluation of renovation strategies

• Synthesis & selection of the best strategy

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Study of homeowners’ values and house profiling

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• Semi-open questions

– Functionality

– Aesthetics

– Usability

– Safety

– Economy

– Indoor environment

– Artistic values

– Degradation & obsolescence

– Etc.

The Integrated Renovation Process

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Home before renovation

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Home coaching

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House (building)

Homeowners (occupants)

The Integrated Renovation Process Evaluation scales

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Evaluator Building expert Homeowners

Type scale Qualitative Quantitative Qualitative Quantitative

A

Favourable

Excellent Expert data 1 Very satisfied Much better

than threshold 1

B Good Expert data 2 Quite satisfied Lightly better

than threshold 1

C

Neutral

Better than neutral

but not good Expert data 3 Satisfied if

minor changes

Lightly worse

than threshold 1

D Neutral Expert data 4 Neutral Neutral

E Worse than neutral

but not poor Expert data 5 Not neutral -

not dissatisfied

Lightly better

than threshold 2

F

Unfavourable

Poor Expert data 6 Quite

dissatisfied

Lightly worse

than threshold 2

G Very poor Expert data 7 Very

dissatisfied

Much worse

than threshold 2

Expert evaluation of the house in existing conditions

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Expert evaluation of the house in existing conditions

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Expert evaluation of the house in existing conditions

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Homeowners-expert evaluation of the house in existing conditions

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• What is for you thermal comfort?

• Have you ever had cold feet?

• What is your experience with the temperature in the house?

• How do you feel?

• Etc.

Homeowners-expert evaluation of the house in existing conditions

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Homeowners-expert evaluation of the house in existing conditions

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Homeowners-expert evaluation of the house in existing conditions

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Homeowners-expert evaluation of the house in existing conditions

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What are the options to improve the house?

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• Home in existing conditions, strategy 1, strategy 2,

strategy 3, etc.

Source: www.archiexpo.com www.depositphotos.com www.clipartpanda.com

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Evaluation of prospective buildings

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Evaluation of prospective buildings

Evaluation of prospective buildings

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Evaluation of prospective buildings

• Open dialogue

– What type of spatial configurations can I get in “Scenario 2”?

– Could we insert the demolition of the inner walls in “Scenario 1”?

– Can we get this modern look in “Scenario 2”?

– What would be the cost of integrating the finishing materials of

“Scenario 3” in “Scenario 2”?

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Evaluation of prospective buildings

Evaluations for all criteria (case study 1)

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CASE STUDY No. 1

Technical

aspects IEQ Immaterial values Economics

De

gradatio

n

Ob

sole

scen

ce

Ene

rgy pe

rform

ance

Ind

oo

r air qu

ality

The

rmal co

mfo

rt

Visu

al com

fort

Aco

ustic co

mfo

rt

Use

r con

trol

He

althy h

om

e

Fun

ction

s

Ae

sthetic

Mo

de

rnisatio

n

Pre

servatio

n

Emo

tion

al

Bu

dget

Ene

rgy costs

Plu

s-value

Scenario 0 G G G G F F F F E G F G A A A G G

Scenario 1 E E F E D E E B C G F E A A A E C

Scenario 2 C C C B C B A B A D F B E C A B B

Scenario 3 A A A A A A A A A A A A E C D A B

Synthesis of the comfort and health

evaluations before renovation

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Global synthesis for building after

renovation (scenario 1)

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• Aggregations in homeowners’ minds • Aggregations using aggregation rules).

Presentation of the results (case study 1)

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Selection of the most favourable scenario

(case study 1)

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Konklusioner

• Hjemme-coaching: HJEM, ikke HUS!

• Husejerne:

• Var mere informerede og mere interesserede

• Følte i kontrol samtidig med at beslutte

• De forstod og fornemmede de mange fordele

• De fandt sprog veltilpasset

• De valgte den bedste renovering strategi ifølge dem

• Flere case undersøgelser er stadig nødvendige for at teste

værktøjet…

Tak for opmærksomheden

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Nicolas Galiotto Bæredygtighedskonsulent, ph.d.

Årstiderne Arkitekter - www.aarstiderne.dk

mail: ng@aarstiderne.dk - mobil: +45 2924 1017

Google søgeord :

VBN Integrated Renovation Process case studies