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Optimised Performance of Energy Supply Systems with Exergy Principles - LowEx Communities

Fraunhofer Institute for Building Physics (IBP)Department Energy Systems

Anna KallertTekn. Dr. Dietrich Schmidt

Innovative city and urban concepts

How will the development of city systems looks like in future?

Smart Infrastructures& supply systemsSmart Infrastructures& supply systems

Plus-energy-buildings/ communitiesPlus-energy-buildings/ communities

Renewable energymixRenewable energymix

Intelligent electrity gridsIntelligent electrity grids

Climate oriented city developmentClimate oriented city development

Smart Mobility & E-mobilitySmart Mobility & E-mobility

Building systems

Supply systems

Sustainable community energy systems

Communities as energy systems

The LowEx approach for communities

Application of LowEx approach for optimization of community demand adapted supply. The very efficient so called low exergy supply and use are of particular interest (see green boxes).

Scope

Improvement of energy conversion chains on a community level

•Significant reduction of energy demand and GHG-emissions

•Integration of renewable heat and cold sources

Objectives

• The focus is on technologies and innovative concepts using low valued energy sources (LowEx) and renewable energies for the heating and cooling of neighborhoods and cities.

• The objective is to demonstrate the potential of low exergy thinking on a community level as energy and cost efficient solution in achieving 100% renewable and GHG emission-free energy systems.

This includes:

•Storage concepts

•Networks / grids

•Control systems und strategies

•Business concepts

System integration!

Waste heat utilization and cascading via synergies

Source: REAP Project, TU Delft

...only possible with smart management systems

Ice rinkSwimming poolSupermarket

Residential Living

demandBuildings suitable for use of low valued energy (LTH and HTC)

distributionLT DH&C 3-pipes system

Integral system approach for the total built environment

- LowEx approach for the Mine Water ProjectCommunity case study in Heerlen (NL)

supplyMinewaterAdditional RES biomass, solar

Assessment methodology

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Expected outcome

• Design guidelines for optimised low exergy systems on community scale

• Technology solutions and new development approaches for smart distribution solutions

• Case study evaluation and best-practice catalogue

• Exergy evaluation on community scale

Our target groups:

•Energy supply and technology industry,

•Project developer and housing companies,

•Decision makers within communities,

•Academia, research and education

1st Working Phase Meeting at NEA

August 26th, 2014

Reykjavik, Iceland

17 participants from 7 EBC countries(AT, CH, DE, DK, NL, SE, USA)

…research and solutions for a sustainable world

Tekn. Dr. Dietrich SchmidtHead of Department Energy SystemsFraunhofer Institute for Building Physics Tel: +49 (0)561 804-1871dietrich.schmidt@ibp.fraunhofer.de

www.ibp.fraunhofer.dewww.iea-ebc.org/www.annex64.org