- Comparison of COP estimation methods for large-scale heat pumps used in energy planningPieper, Henrik; Ommen, Torben; Kjær Jensen, JonasEnergy2020 / art. 117994, 13 p. : ill https://doi.org/10.1016/j.energy.2020.117994
- Efficient use of heat from CHP distributed by district heating system in district cooling networksPieper, Henrik; Kirs, Tanel; Krupenski, Igor; Ledvanov, Aleksandr; Lepiksaar, Kertu; Volkova, AnnaEnergy reports2021 / p. 47-54 https://doi.org/10.1016/j.egyr.2021.09.041 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS
- GIS-based approach to identifying potential heat sources for heat pumps and chillers providing district heating and coolingPieper, Henrik; Lepiksaar, Kertu; Volkova, AnnaInternational Journal of Sustainable Energy Planning and Management2022 / p. 29-44 https://doi.org/10.54337/ijsepm.7021 Journal metrics at Scopus Article at Scopus
- Heat pump potential in the Baltic StatesVolkova, Anna; Pieper, Henrik; Koduvere, Hardi; Lepiksaar, Kertu; Siirde, Andres2021 https://pub.norden.org/nordicenergyresearch2021-02/
- Large-scale heat pumps for district heating systems in the Baltics : potential and impactVolkova, Anna; Koduvere, Hardi; Pieper, HenrikRenewable and sustainable energy reviews2022 / art. 112749 https://doi.org/10.1016/j.rser.2022.112749 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS
- Method of linear approximation of COP for heat pumps and chillers based on thermodynamic modelling and off-design operationPieper, Henrik; Krupenski, Igor; Markussen, Wiebke Brix; Ommen, Torben; Siirde, Andres; Volkova, AnnaEnergy2021 / art. 120743 : ill https://doi.org/10.1016/j.energy.2021.120743 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS
- Modelling framework for integration of large-scale heat pumps in district heating using low-temperature heat sources : A case study of Tallinn, EstoniaPieper, Henrik; Mašatin, Vladislav; Volkova, Anna; Ommen, Torben; Elmegaard, Brian; Markussen, Wiebke BrixInternational journal of sustainable energy planning and management2019 / p. 67–86 : ill https://doi.org/10.5278/ijsepm.2019.20.6 Journal metrics at Scopus Article at Scopus
- Optimal design and dispatch of electrically driven heat pumps and chillers for a new development areaPieper, Henrik; Ommen, Torben; Elmegaard, Brian; Volkova, Anna; Markussen, Wiebke BrixEnvironmental and Climate Technologies2021 / p. 470−482 : ill https://doi.org/10.2478/rtuect-2020-0117 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS
- Small low-temperature district heating network development prospectsVolkova, Anna; Krupenski, Igor; Pieper, Henrik; Ledvanov, Aleksandr; Latõšov, Eduard; Siirde, AndresEnergy2019 / p. 714-722 https://doi.org/10.1016/j.energy.2019.04.083 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS
- Uuring: Balti riikide looduslikud ja tööstuslikud soojusallikad on alakasutatudMente et Manu2021 / lk. 13 https://www.ester.ee/record=b1242496*est