WP 5 Pilot projects implementation and evaluation

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Projet financé par le Fonds Européen de Développement Régional - FEDER Project co-financed by European Regional Development Fund - ERDF

24 January 2014, Marseille

Dominique Caccavelli, Energies renouvelables, CSTB

WP 5 – Pilot projects implementation and

evaluation

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Pilot project implementation

Work Plan

?

Selection

of pilot

projects

Diagnosis

Elaboration

_{of action}

plans

Implement

ation of

action

plans

Evaluation

of action

plans

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Evaluation - 1

A common target has been fixed for all pilot projects:

• a cut of energy consumption by 40%

OR

• a gain of 2 energy classes (for ex. from class F to class D)

• an investment for energy retrofitting less than 20 000 € per dwelling

To check the achievement of this goal, a set of 9

common indicators has been defined. These indicators

will be used to:

► Compare the different pilot projects together

► Benchmark energy savings after refurbishment

► Draw conclusions at territorial and project level on

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Evaluation - 2

► 6 energy performance indicators



Ind 1: Annual amount of electricity delivered to the building



Ind 2: Annual amount of thermal energy delivered to the building



Ind 3: Annual total amount of energy delivered to the building



Ind4: Annual total amount of energy exported by the building



Ind 5: Real energy saving potential of ECMs



Ind 6: Energy effectiveness of ECMs

► 1 environmental indicator



Ind 7: Annual carbon dioxide emissions

► 2 economic indicators



Ind 8: Investment cost

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Evaluation - 3

► Each pilot project manager is responsible for

calculating these indicators (at least those that

are relevant for the project). CSTB can support

partners but will not do the work!

► Preliminary version of these indicators shall be

delivered to CSTB by September 2014, final

version by November 2014.

► A full year of measured data will facilitate the

calculation of indicators (no need to make

extrapolation).

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Evaluation - 4

6 Domain

Electricity

load

DHW load

Space heating

load

Relevant

indicators

Ind1, Ind4,

Ind5, Ind8,

Ind9

Ind2, Ind5,

Ind8, Ind9

Ind2, Ind5,

Ind7, Ind8,

Ind9

Typical ECMs PV modules

High-efficient

lighting

Solar thermal

collectors

Thermal

insulation

High-efficient

windows

Heat pump

Method or

software

PV syst

Archelios

PV design

Polysun

Simsol

Tsun

Energy

signature

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Energy signature - 1

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Energy signature - 2

8 Year n: C

_th

n

_,

Θ

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Energy signature - 3

9 The annual thermal energy consumption (kWh) can be

calculated (and extrapolated) over the reporting period

as follows

C

_th

(n+1)

= 0,17.Area.(n

_wh

n

.(P

₀

+H.θ

_m

n

) + (52-n

_wh

n

).P

_b

)

Energy savings (only for space heating ECMs) are

calculated as follows:

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Energy signature - 4

10 The energy signature method is only valid if the

reporting period is longer than 6 months (of which 4 at

least are within the heating period).

What will happen if these conditions are not

respected?

Plan B: Replace energy &

environmental indicators by indicators

assessing the thermal comfort

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Thermal comfort - 1

11 The perception of thermal comfort is different in winter

or in summer:

• In winter, inhabitants may suffer from under heating

or cold surfaces.

 ECMs will improve thermal comfort in winter

 The rebound effect linked to the increase of

thermal comfort after the refurbishment shall

be measured

• In summer, inhabitants may suffer from over

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Thermal comfort - 2

12 The thermal comfort in summer can be assessed

through:

• Indoor (and outdoor) temperature sensors.

• Thermal comfort assessment questionnaires.

 Both tools require an ante (before

refurbishment) post (after refurbishment)

evaluation. The difference will give an

indication about the thermal comfort

improvement.

 Indoor temperature conditions must be

correlated with outdoor temperature conditions

in both terms of average values (daily) and

peak values (extreme values).

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13 Conclusions

► The evaluation campaign shall start as soon as

refurbishment works are finished. If a pilot project

contains more than a building (or a house)

assessment must be incremental (step by step)!

► The evaluation campaign shall lead to pragmatic

conclusions: thermal comfort improvements,

energy savings …. Please use the tools

(questionnaires, indicators) that were designed for

that purpose.

► Do not wait last days to provide your results! We