energy performance monitoring · 2 lyon confluence is one of the first very energy efficient...

RENAISSANCE : a CONCERTO project financed by the European Commission on the six framework programme

Sylvain Koch-MathianHespul

RENAISSANCE International ConferenceMilan – 31st May 2011

Energy Performance Monitoring - Lyon confluence -


Importance of monitoring

2

Lyon Confluence is one of the first very energyefficient district built in France

It is a kind of “prototype”Ambitious energy performances are targeted(<50 kWh/m2/year; 80% REN for heating)

New systems and techniques has been usedlot of money and time have been spent in this project

Thus, monitoring is necessary as to:Assess actual energy performances of the buildingsBetter understand what work and what do not work

Global ratios are not sufficient to achieve this goalWe need explanatory variables (data at a 10 minutes time step)

RENAISSANCE es un proyecto del programa CONCERTO co-financiado por la Comisión Europeadentro del Sexto Programa Marco

What is monitored?

Qualify the outdoor conditions(T°C, humidity, solar radiation, wind)

Actual operating conditions of buildings:comfort (T°C & humidity) and air flow (quality of the envelopeairtightness)

Heating consumption (both at dwelling level and atsubstations/stations level)

Hot water consumption

Ventilation electricity consumption

Electrical consumption (dwellings and common areas)

Indoor air pollution (CO2 and VOCs : Volatile OrganicCompounds)

All common areas and systemsAbout 10% of the dwellings


Examples of results (1)

kWh/m² heated area by usesGreen house effect gases balanceReconstitution of the thermal and energybalance by usesEvaluation of the maintained comfort(winter/summer)Analysis of the occupancy modes and of thebehaviour of the inhabitants



Temperature - cumuled frequency- Zac de Bonne (Grenoble -France)

Temperature for 43dwellings by time span of5 min

During 95% of the time, indoor temperature issuperior to 19°C (legal heating T°C) !!


Examples of impact of theindoor temperature

31,8

29,5

36,735,6

-

5,0

10,0

15,0

20,0

25,0

30,0

35,0

40,0

Ineed B2

Con

som

mat

ion

(kW

h/m

_Sha

b/an

)

19 °C

20 °C

19 °C

20 °C+ 6,1 kWh/m_/anprimaire

+ 4,9 kWh/m_/an utilesoit 5,4 primaire

+ 15 %+ 21%

1°C above 19°C imply on over consumption of 15 à 20% for energy efficient buildings


Planning of the monitoringcampaign


In total : 2800 meters

Monitoring campaign by ENERTECH

Planning of the monitoringcampaign


Strengths and weaknesses ofthis approach

Strengthsexplanatory variables(data at a 10 minutestime step)

Accurate results andin depth analysis

Possibility to identifythe impacts ofoutdoor environmentand/or inhabitantsbehaviors

WeaknessesNo intermediary (orlive) results

Need to wait 1 yearof measures + 6months of analysis

No interactionpossible withinhabitants or M&Ocompanies


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Monitoring needs for PVsystems

Operation & Maintenance toolAlarm for default of productionCentralization & archiving of production

data for several PV system on a singleplatform

A analysis at the system levelAutomatic publication of production data


Epices plataform for themonitoring of multi PV systems


Examples of analysis & dataproduced by Epices


Example of a defaultidentification for PV systems

PV system: 228 kWcDefault: system disjunction

Duration: 90h

Looses: 2 912 kWh

Price: 1 690€


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Conclusions &Recommendations

Detailed monitoring is essential to: evaluated actual energy performance of thebuildingTo precisely identify the main consumptionitem and work on them for next buildings(learning by doing process)

PV monitoring & follow up enables toidentify defaults/failures and avoid looseof production

RENAISSANCE : a CONCERTO project financed by the European Commission on the six framework programme 17

ContactSylvain Koch-Mathian

[email protected]

Thank you for your attention !

energy performance monitoring · 2 lyon confluence is one of the first very energy efficient...

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