Heat savings in buildings in a 100% renewable heat and power system in Denmark with different shares of district heating

Erika Zvingilaite, Olexandr Balyk

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    The paper examines implementation of heat saving measures in buildings in 2050, under the assumption that heat and power supply comes solely from renewable resources in Denmark.Balmorel – a linear optimisation model of heat and power sectors in Denmark is used for investigating economically viable levels of heat savings, which can be implemented by reducing heat transmission losses through building elements and by installing ventilation systems with heat recovery, in different future Danish heat and power system scenarios. Today almost 50% of heat demand in Denmark is covered by district heating. A further expansion of district heating network in Denmark is assessed and penetration of heat savings is analysed in this context.If all heat saving measures, included in the model, are implemented, heat demand in Danish buildings in 2050 could be reduced by around 40%. Results show that it is cost effective to reduce from approximately 12% to 17% of future heat demand in buildings depending on assumed lifetime and costs of heat saving measures. Individual heating areas have higher penetration of heat savings than district heating areas. When district heating systems are expanded, an overall penetration of heat savings slightly decreases along with lower capacity investments and system costs.
    Original languageEnglish
    JournalEnergy and Buildings
    Volume82
    Pages (from-to)173-186
    ISSN0378-7788
    DOIs
    Publication statusPublished - 2014

    Keywords

    • Renewable energy
    • Heat savings
    • District heating
    • Externalities

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