Long term performance of different SAGSHP solutions for residential energy supply in Finland

    Research output: Contribution to journalArticleScientificpeer-review

    18 Citations (Scopus)

    Abstract

    The presented paper focuses on different control strategies of a solar assisted ground source heat pump (SAGSHP) for cold climate. Dynamic simulation approach has been used through TRNSYS software. In particular, a SAGSHP solution operating with the strategies suitable for cold climate found in literature, a conventional ground source heat pump (GSHP) solution and a GSHP with solar thermal system only for building heating supply have been compared to the SAGSHP proposed system. The impact of the considered system solutions on seasonal performance factor and primary energy ratio in case of a gas boiler as auxiliary system has been evaluated as a function of the boreholes depth, the conventional solar thermal collector typologies and the size of the solar thermal system. Results have shown that the proposed strategy is effective from a specific borehole depth. Moreover, the solar thermal collector typology has to be selected accordingly to the borehole depth and to the used auxiliary source. Furthermore, the temperature difference between solar collectors and the ground, which has to be exceeded for driving solar heat into it, has to be kept low for system with short borehole in order to drive more heat into the ground and it has to be incremented with the increasing of borehole length, especially for small solar thermal system size when flat plate and evacuated tube solar collector typologies are adopted.
    Original languageEnglish
    Pages (from-to)31-50
    JournalApplied Energy
    Volume144
    DOIs
    Publication statusPublished - 2015
    MoE publication typeA1 Journal article-refereed

    Fingerprint

    residential energy
    Geothermal heat pumps
    borehole
    Boreholes
    typology
    Solar collectors
    climate
    Heat pump systems
    heat pump
    energy supply
    Hot Temperature
    heating
    software
    Boilers
    gas
    Heating
    simulation
    energy
    Computer simulation
    temperature

    Keywords

    • ground source heat pumps
    • solar energy
    • cold climate
    • modelling

    Cite this

    @article{63d64cd85ea9455e83a5337519e4a5eb,
    title = "Long term performance of different SAGSHP solutions for residential energy supply in Finland",
    abstract = "The presented paper focuses on different control strategies of a solar assisted ground source heat pump (SAGSHP) for cold climate. Dynamic simulation approach has been used through TRNSYS software. In particular, a SAGSHP solution operating with the strategies suitable for cold climate found in literature, a conventional ground source heat pump (GSHP) solution and a GSHP with solar thermal system only for building heating supply have been compared to the SAGSHP proposed system. The impact of the considered system solutions on seasonal performance factor and primary energy ratio in case of a gas boiler as auxiliary system has been evaluated as a function of the boreholes depth, the conventional solar thermal collector typologies and the size of the solar thermal system. Results have shown that the proposed strategy is effective from a specific borehole depth. Moreover, the solar thermal collector typology has to be selected accordingly to the borehole depth and to the used auxiliary source. Furthermore, the temperature difference between solar collectors and the ground, which has to be exceeded for driving solar heat into it, has to be kept low for system with short borehole in order to drive more heat into the ground and it has to be incremented with the increasing of borehole length, especially for small solar thermal system size when flat plate and evacuated tube solar collector typologies are adopted.",
    keywords = "ground source heat pumps, solar energy, cold climate, modelling",
    author = "Francesco Reda",
    year = "2015",
    doi = "10.1016/j.apenergy.2015.01.059",
    language = "English",
    volume = "144",
    pages = "31--50",
    journal = "Applied Energy",
    issn = "0306-2619",
    publisher = "Elsevier",

    }

    Long term performance of different SAGSHP solutions for residential energy supply in Finland. / Reda, Francesco.

    In: Applied Energy, Vol. 144, 2015, p. 31-50.

    Research output: Contribution to journalArticleScientificpeer-review

    TY - JOUR

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    AU - Reda, Francesco

    PY - 2015

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    AB - The presented paper focuses on different control strategies of a solar assisted ground source heat pump (SAGSHP) for cold climate. Dynamic simulation approach has been used through TRNSYS software. In particular, a SAGSHP solution operating with the strategies suitable for cold climate found in literature, a conventional ground source heat pump (GSHP) solution and a GSHP with solar thermal system only for building heating supply have been compared to the SAGSHP proposed system. The impact of the considered system solutions on seasonal performance factor and primary energy ratio in case of a gas boiler as auxiliary system has been evaluated as a function of the boreholes depth, the conventional solar thermal collector typologies and the size of the solar thermal system. Results have shown that the proposed strategy is effective from a specific borehole depth. Moreover, the solar thermal collector typology has to be selected accordingly to the borehole depth and to the used auxiliary source. Furthermore, the temperature difference between solar collectors and the ground, which has to be exceeded for driving solar heat into it, has to be kept low for system with short borehole in order to drive more heat into the ground and it has to be incremented with the increasing of borehole length, especially for small solar thermal system size when flat plate and evacuated tube solar collector typologies are adopted.

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    KW - solar energy

    KW - cold climate

    KW - modelling

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