Role of LNG in an optimized hybrid energy network: part I. Increased operational flexibility for the future energy system by integration of decentralized LNG regasification with a CHP

Juliana Montoya Cardona, Marietta de Rooij (Editor), Jacques Dam

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    Abstract

    The future energy system could benefit from the integration of the independent gas, heat and electricity infrastructures. In addition to an increase in exergy efficiency, such a Hybrid Energy Network (HEN) could support the increase of intermittent renewable energy sources by offering increased operational flexibility. Nowadays, the expectations on Natural Gas resources forecast an increase in the application of Liquefied Natural Gas (LNG), as a means of storage and transportation, which has a high exergy value due to the low temperature. Therefore, we analysed the integration of a decentralized LNG regasification with a CHP (Waste-to-Energy) plant, to determine whether the integration could offer additional operational flexibility for the future energy network with intermittent renewable energy sources, under optimized exergy efficient conditions. We compared the independent system with two systems integrated by means of 1) Organic Rankine Cycle and 2) Stirling Engine using the cold of the LNG, that we analysed using a simplified deterministic model based on the energy hub concept. We use the hourly measured electricity and heat demand patterns for 200 households with 35% of the households producing electricity from PV according to a typical measured solar insolation pattern in The Netherlands. We found that for both systems the decentralized LNG regasification integrated with the W2E plant affects the imbalance of the system for electricity and heat, due to the additional redundant paths to produced electricity. The integration of the systems offers additional operational flexibility depending on the means of integration and its availability to produce additional energy carriers. For our future work, we will extend the model, taking into account the variability and randomness in the different parameters, which may cause significant changes in the performance and reliability of the model.
    Original languageEnglish
    Number of pages1
    Publication statusPublished - 28 Jun 2017
    EventThe 4th Sustainable Thermal Energy Management International Conference - Golden tulip, Alkmaar, Netherlands
    Duration: 28 Jun 201729 Jul 2017
    https://research.ncl.ac.uk/thermal_challenge_network/events/sustem2017inthenetherlands/

    Conference

    ConferenceThe 4th Sustainable Thermal Energy Management International Conference
    Abbreviated titleSUSTEM2017
    CountryNetherlands
    CityAlkmaar
    Period28/06/1729/07/17
    Internet address

    Keywords

    • energy
    • sustainability
    • flexibility

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