1© ennovatis GmbH

Test and Demo Buildings used by ennovatis for Linking EPDB and Continuous Commissioning

presentation at the 2nd BuildingEQ expert meeting

byDan Hildebrandt, Roland Kopetzky,

Frauke Schönfeld and Fritz Schmidt

ennovatis GmbH Germany Helsinki, June 2007

2© ennovatis GmbH

Contend

1. Ennovatis approach for Linking EPDB and Continuous Commissioning

2. Test building – ennovatis office buildingDescription and first results

3. Demo building 1 University of Stuttgart Description and past results

4. Demo building 2 Hospital in Hagenow Description

3© ennovatis GmbH

General strategy to evolve EA into EM including EPBD

Select building from building stock Level 0

Perform Level 1 EA using the multi zone model of EPBD

Extend Level 1 EA through Short term measurements Simulation kernel based on hourly methods

including system simulation (e.g. Energy+) Detailed descriptions of loads

result is Level 2 EA

Replace short term through long term measurements, adapt demand model and introduce model based EM – Level 3

L0

L1

L2

L3

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Integration of 18599 kernel with ennovatis tools 2

Calc18599

5© ennovatis GmbH

Tribute to Granlunds BIM presentation

Similar interface with RIUSKA possible

Integrating EBPD with E+

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Test: ennovatis office building Großpösna

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1. tabular

2. grafical => CADdict CAD

3. CAD-systemen

=> Import

Building model 2D

8© ennovatis GmbH

Building model 3D

9© ennovatis GmbH

2D and 3D generation and visualisation of zones

Thermal model 2D and 3D

10© ennovatis GmbH

Result of step 1

Room based building model which can be used to

Generate thermal model to calculate demand according to DIN 18599

Generate thermal model to calculate demand according to VDI 2067

Generate thermal model to calculate consumption according to VDI 2067

Generate thermal model to calculate component behaviour according to E+

Visualization of results Communication of results and measures with owner and

tenants

11© ennovatis GmbH

Energy demand as calculated by VEC and DIN 18599

VEC DIN 18599

Results not yet comparable due to inadequate transfer of models

12© ennovatis GmbH

Measurements in the test building

The following data are collected through ennovatis-Smartbox:

External temperature (1/min) Electricity for heating

lightening and internal loads (1/15min)

Gas (1/15min) Temperature Server-room

(1/min) Water (1/15min)

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Funk-Zentrale

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Funk-Zentrale

EDM-Server

ISDN/ Analog/ GSM

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EDM-Server

ISDN/ Analog/ GSM

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Online visualization is comming soon

13© ennovatis GmbH

Water consumption monthly

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Water consumption dayly

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Electricity consumption in week 17 in 2007

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Water and electrical consumption dayly

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Water and electrical consumption monthly

18© ennovatis GmbH

Energy consumption

19© ennovatis GmbH

First preliminary conclusions (to be confirmed)

We can use the EPBD geometry model to calculate both energy demand and energy consumption

We can derive from measured consumption data (water and electricity) valuable information to determine the internal loads

We still have to improve the profiles for the consumption simulation

We expect to be able to predict the energy consumption with an accuracy of 5% or better

Measures to improve energy efficiency can be derived from the hourly data. They should be applied if discrepancies become more than 5%

We also will be able to derive rules for modeling of buildings and building systems to achieve the 5% accuracy

20© ennovatis GmbH

Use of 2D models for visualisation

[kWh/(m²a)]

21© ennovatis GmbH

Case Study Building 1: University of Stuttgart

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Already takenAlready taken• Identify energy saving potentialsIdentify energy saving potentials

Install data acquisition systemInstall data acquisition systemModel and analyze buildingModel and analyze building

• Define measures to be takenDefine measures to be taken• Realize the defined measuresRealize the defined measures• Implement an energy management systemImplement an energy management system• Visual control of the consumptionsVisual control of the consumptions

Next Steps Next Steps • Generate energy certificateGenerate energy certificate• Simulate consumptionSimulate consumption• Develop methods to reduce consumption to demandDevelop methods to reduce consumption to demand

Steps taken and planned

23© ennovatis GmbH

Typical Temperature-, Power- and Mass Flowcharacteristics (Nov. 2004)

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Tem

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in

kW

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400

600

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1000

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Mas

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low

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Supply Temperature Return Temperature Outside Temperature Thermal Power Mass Flow

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Building Model

CADDICTCADDICT

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Visual Data AnalyserVisual Data Analyser

Flexible Flexible graphic displaygraphic display

Metering of consumption data

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Wärmeenergieverbrauch VFG mit Witterungsbereinigung über Gradtage

0

100.000

200.000

300.000

400.000

500.000

600.000

700.000

800.000

900.000

kWh

/a

Wärme 713275 805028 741183 705611 469028 537021

2001 2002 2003 2004 2005 2006

36,7% 27,6%

Heating energy consumption (temperature corrected)

27© ennovatis GmbH

Jahresverlauf des Wärmeenergieverbrauchs, witterungsbereinigt

0

20

40

60

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100

120

140

MWh/a

Wärme, 2001 113,3 99,3 90,2 62,5 48,1 18,8 26,8 0,0 0,0 44,3 93,7 135,4

Wärme, 2002 115,6 114,1 94,0 62,3 42,3 41,7 59,7 20,8 32,6 62,8 84,4 115,4

Wärme, 2003 141,3 104,3 78,7 60,9 33,5 6,5 8,8 39,3 41,3 44,8 66,0 118,6

Wärme, 2004 126,1 106,3 95,7 62,1 30,9 11,9 4,3 12,0 30,6 47,9 80,1 98,9

Wärme, 2005 113,1 67,3 50,8 30,8 16,8 8,1 3,3 2,4 16,3 31,4 52,8 77,5

Wärme, 2006 87,6 75,3 66,0 43,7 21,0 15,3 4,0 8,4 64,3 43,5 55,7 75,7

Januar Februar März April Mai Juni Juli August September Oktober November Dezember

Monthly energy consumption

28© ennovatis GmbH

Case Study Building 2: Hospital in Hagenow

29© ennovatis GmbH

Some data concerning Hagenow hospital

3 buildings Old, new, CHP power plant

rennovation 1999 to 2002

construction 1994 to 1998

Number of beds 172

area 16085,27 (NGF), 19341,83 (BGF)

Consumption/cost

gas 3.248.811kWh 136.781€

water 16162 m3 63.242€

eletricity 1.619.368kWh 171.311€

Maximum power 352 kW

30© ennovatis GmbH

Thank you very much for your attention

ennovatis GmbHStammheimerstr. 10D-70806 Kornwestheim

E-Mail: F.Schmidt@ennovatis.de

fon: +49 7154-83600-69

http://www.kenwo.de

http://www.ennovatis.de

Address Stuttgart branch

31© ennovatis GmbH

Vom Energieausweis zur modellbasierten Betriebsanalyse

Klassifizierung der Gebäude über benchmarking: Level 0 Energie Audit

Level 1 EA Ausstellung Energieausweis einschließlich Maßnahmen

Erweiterung des Level 1 EA durch Kurzzeit Messungen Anlagensimulation auf Basis stündlicher

Werte (e.g. Energy+) Detailierte Beschreibung der inneren Lasten

Ergebnis Level 2 EA

Übergang von Kurzzeit zu Langzeit Messungen; Anpassung des Bedarfsmodels Übergang zum modelbased EM – Level 3

L0

L1

L2

L3

32© ennovatis GmbH

Measurements in the test building

Die folgenden Daten werden über eine ennovatis-Smartbox

gesammelt:

Außentemperatur (1/min) Strom für Pumpen,

Beleuchtung und innere Lasten (1/15min)

Gas (1/15min) Temperatur Server-Raum

(1/min) Wasser (1/15min)

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Funk-Zentrale

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Funk-Zentrale

EDM-Server

ISDN/ Analog/ GSM

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EDM-Server

ISDN/ Analog/ GSM

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