IDEAS home Printed from https://ideas.repec.org/a/gam/jeners/v17y2024i6p1502-d1361301.html
   My bibliography  Save this article

Field Trial Evaluation of a Hybrid Heat Pump in an Existing Multi-Family House before and after Renovation

Author

Listed:
  • Daniel Neubert

    (Chair of Building Energy Systems and Heat Supply, Technical University of Dresden, 01062 Dresden, Germany
    Bosch Thermotechnik GmbH, 35457 Lollar, Germany)

  • Christian Glück

    (Bosch Thermotechnik GmbH, 35457 Lollar, Germany)

  • Jeannette Wapler

    (Fraunhofer Institute of Solar Energy Systems ISE, 79110 Freiburg, Germany)

  • Armin Marko

    (Bosch Thermotechnik GmbH, 35457 Lollar, Germany)

  • Constanze Bongs

    (Faculty of Mechanical Engineering and Mechatronics, Karlsruhe University of Applied Sciences, 76133 Karlsruhe, Germany)

  • Clemens Felsmann

    (Chair of Building Energy Systems and Heat Supply, Technical University of Dresden, 01062 Dresden, Germany)

Abstract

Renovation of existing buildings is fundamental to reduce greenhouse gas emissions of the building sector and to ensure the efficient operation of renewable heating systems. In multi-family houses, the suitability of heat pumps is limited by high required temperatures for the hot water preparation, which can be mitigated by hybrid heat pump systems. In this study, the energetic performance of a hybrid heat pump in a multi-family house, built in 1964, is investigated based on field data before and after a renovation. Multiple months are measured and mapped to a full year period. The combination of different renovation measures in the heating system and building envelope is rated w.r.t. their ecological and economical impact by taking into account the actual investment costs. The evaluation shows that the installation of a hybrid heat pump can achieve an accumulated greenhouse gas emissions reduction of 45%, which is similar to a building renovation to a new-build standard, which reduces the space heating demand by up to 62%. Nevertheless, only a combination of both measures can substantially reduce the emissions, which in this case are 81% lower compared to a gas boiler in 1990, which is still below the German climate target for 2040. Due to the low investment costs of a hybrid heat pump system, tenants are more likely to profit from a renting costs reduction, while a building renovation is especially economically beneficial at high energy prices. The results therefore emphasize that the insulation level should be selected carefully, as heat pumps already prepare space heating efficiently and that the heat pump must be able to support the hot water preparation to reach high emission reduction targets.

Suggested Citation

  • Daniel Neubert & Christian Glück & Jeannette Wapler & Armin Marko & Constanze Bongs & Clemens Felsmann, 2024. "Field Trial Evaluation of a Hybrid Heat Pump in an Existing Multi-Family House before and after Renovation," Energies, MDPI, vol. 17(6), pages 1-27, March.
    • Handle: RePEc:gam:jeners:v:17:y:2024:i:6:p:1502-:d:1361301
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/1996-1073/17/6/1502/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/1996-1073/17/6/1502/
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. Lämmle, Manuel & Bongs, Constanze & Wapler, Jeannette & Günther, Danny & Hess, Stefan & Kropp, Michael & Herkel, Sebastian, 2022. "Performance of air and ground source heat pumps retrofitted to radiator heating systems and measures to reduce space heating temperatures in existing buildings," Energy, Elsevier, vol. 242(C).
    Full references (including those not matched with items on IDEAS)

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Omar Montero & Pauline Brischoux & Simon Callegari & Carolina Fraga & Matthias Rüetschi & Edouard Vionnet & Nicole Calame & Fabrice Rognon & Martin Patel & Pierre Hollmuller, 2022. "Large Air-to-Water Heat Pumps for Fuel-Boiler Substitution in Non-Retrofitted Multi-Family Buildings—Energy Performance, CO 2 Savings, and Lessons Learned in Actual Conditions of Use," Energies, MDPI, vol. 15(14), pages 1-29, July.
    2. Fabian Wüllhorst & Christian Vering & Laura Maier & Dirk Müller, 2022. "Integration of Back-Up Heaters in Retrofit Heat Pump Systems: Which to Choose, Where to Place, and How to Control?," Energies, MDPI, vol. 15(19), pages 1-22, September.
    3. Zhuang, Chaoqun & Choudhary, Ruchi & Mavrogianni, Anna, 2023. "Uncertainty-based optimal energy retrofit methodology for building heat electrification with enhanced energy flexibility and climate adaptability," Applied Energy, Elsevier, vol. 341(C).
    4. Wang, Haichao & Zhou, Yang & Li, Xiangli & Wu, Xiaozhou & Wang, Hai & Elnaz, Abdollahi & Granlund, Katja & Lahdelma, Risto & Teppo, Esa, 2023. "Study on the performance of a forced convection low temperature radiator for district heating," Energy, Elsevier, vol. 283(C).
    5. Maria Vicidomini & Diana D’Agostino, 2022. "Geothermal Source Exploitation for Energy Saving and Environmental Energy Production," Energies, MDPI, vol. 15(17), pages 1-5, September.
    6. Shan, Lianying & Martin, Andrew & Chiu, Justin NingWei, 2024. "Techno-economic analysis of latent heat thermal energy storage integrated heat pump for indoor heating," Energy, Elsevier, vol. 298(C).
    7. Ouyang, Tiancheng & Zhang, Mingliang & Wu, Wencong & Zhao, Jiaqi & Xu, Hua, 2023. "A day-ahead planning for multi-energy system in building community," Energy, Elsevier, vol. 267(C).
    8. Barnaś, Krzysztof & Jeleński, Tomasz & Nowak-Ocłoń, Marzena & Racoń-Leja, Kinga & Radziszewska-Zielina, Elżbieta & Szewczyk, Bartłomiej & Śladowski, Grzegorz & Toś, Cezary & Varbanov, Petar Sabev, 2023. "Algorithm for the comprehensive thermal retrofit of housing stock aided by renewable energy supply: A sustainable case for Krakow," Energy, Elsevier, vol. 263(PD).
    9. Jiaqi Cao & Shiyu Zhou & Tao Wang & Baoqi Shan & Xueping Liu, 2023. "Research on a Variable Water Supply Temperature Strategy for a Ground-Source Heat Pump System Based on TRNSYS-GENOPT (TRNOPT) Optimization," Sustainability, MDPI, vol. 15(5), pages 1-14, March.
    10. Simon Jurkschat & Florian Felix Sehr & Karsten Fransen & Andre Beblek & Viktor Grinewitschus, 2023. "Measurement Data-Based Estimation of the Suitability of Existing Properties for the Operation of x to Water Heat Pumps Using a Seed of 100 Multi-Family Houses and Different Power Shifting Approaches," Energies, MDPI, vol. 16(21), pages 1-15, October.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:gam:jeners:v:17:y:2024:i:6:p:1502-:d:1361301. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: MDPI Indexing Manager (email available below). General contact details of provider: https://www.mdpi.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.