• Nils Koppels Allé, 403, 024

    2800 Kgs. Lyngby

    Denmark

20112020

Research output per year

If you made any changes in Pure these will be visible here soon.

Research Output

2020

Comparison of COP estimation methods for large-scale heat pumps used in energy planning

Pieper, H., Ommen, T., Jensen, J. K., Elmegaard, B. & Markussen, W. B., 2020, In : Energy. 205, 13 p., 117994.

Research output: Contribution to journalJournal articleResearchpeer-review

Economic feasibility of ultra-low temperature district heating systems in newly built areas supplied by renewable energy

Meesenburg, W., Ommen, T., Thorsen, J. E. & Elmegaard, B., 2020, In : Energy. 191, 116496.

Research output: Contribution to journalJournal articleResearchpeer-review

Optimizing control of two-stage ammonia heat pump for fast regulation of power uptake

Meesenburg, W., Markussen, W. B., Ommen, T. & Elmegaard, B., 2020, In : Applied Energy. 271, 18 p., 115126.

Research output: Contribution to journalJournal articleResearchpeer-review

2019

Assessment of a combination of three heat sources for heat pumps to supply district heating

Pieper, H., Ommen, T., Elmegaard, B. & Markussen, W. B., 2019, In : Energy. 176, p. 156-170

Research output: Contribution to journalJournal articleResearchpeer-review

1 Downloads (Pure)

Comparison of COP estimation methods for large-scale heat pumps in energy planning tools

Pieper, H., Ommen, T., Jensen, J. K., Elmegaard, B. & Markussen, W. B., 2019, Proceedings of ECOS 2019: 32nd International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems. 19 p.

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Open Access
File
82 Downloads (Pure)

Design considerations for dynamically operated large-scale ammonia heat pumps

Meesenburg, W., Kofler, R., Ommen, T., Markussen, W. B. & Elmegaard, B., 2019, Proceedings of the 25th IIR International Congress of Refrigeration. International Institute of Refrigeration, p. 2591-2598 1203

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Open Access
File
103 Downloads (Pure)

Drinking water supply as low-temperature source in the district heating system: A case study for the city of Copenhagen

Hubeck-Graudal, H., Kirstein, J. K., Ommen, T., Rygaard, M. & Elmegaard, B., 2019, In : Energy. 194, 15 p., 116773.

Research output: Contribution to journalJournal articleResearchpeer-review

Generalized COP estimation of heat pump processes for operation off the design point of equipment

Ommen, T., Jensen, J. K., Meesenburg, W., Jørgensen, P. H., Pieper, H., Markussen, W. B. & Elmegaard, B., 2019, Proceedings of the 25th IIR International Congress of Refrigeration. International Institute of Refrigeration, 8 p. 648

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Open Access
File
66 Downloads (Pure)

Mapping of Coefficient of Performance for large-scale ammonia heat pumps for district heating systems

Jørgensen, P. H., Ommen, T., Markussen, W. B. & Elmegaard, B., 2019, Proceedings of the 25th IIR International Congress of Refrigeration. International Institute of Refrigeration, 8 p.

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Open Access
File
83 Downloads (Pure)
Open Access
File
75 Downloads (Pure)

Performance Optimization of a Large-Scale Ammonia Heat Pump in Off-Design Conditions

Jørgensen, P. H., Ommen, T., Markussen, W. B. & Elmegaard, B., 2019, Proceedings of the 8th Conference on Ammonia and CO2 Refrigeration Technologies. International Institute of Refrigeration, p. 107-114 (Institut International du Froid. Bulletin).

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Open Access
File
63 Downloads (Pure)
2018

Allocation of investment costs for large-scale heat pumps supplying district heating

Pieper, H., Ommen, T., Bühler, F., Lava Paaske, B., Elmegaard, B. & Markussen, W. B., 2018, In : Energy Procedia. 147, p. 358-367

Research output: Contribution to journalConference articleResearchpeer-review

Open Access
File
476 Downloads (Pure)

Design and optimization of the heat exchanger network for district heating ammonia heat pumps connected in series

Jørgensen, P. H., Ommen, T., Markussen, W. B., Rothuizen, E. D., Hoffmann, K. & Elmegaard, B., 2018, Proceedings of the13th IIR-Gustav Lorentzen Conference on Natural Refrigerants . International Institute of Refrigeration, p. 1225-1235

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Open Access
File
322 Downloads (Pure)

Dynamic exergoeconomic analysis of a heat pump system used for ancillary services in an integrated energy system

Meesenburg, W., Ommen, T. & Elmegaard, B., 2018, In : Energy. 152, p. 154-165

Research output: Contribution to journalJournal articleResearchpeer-review

Open Access
File
31 Downloads (Pure)

Feasibility of heat pumps supplying district heating systems: case study for Austria and Denmark

Meesenburg, W., Geyer, R., Terreros, O., Pieper, H., Ommen, T. & Elmegaard, B., 2018. 8 p.

Research output: Contribution to conferencePaperResearchpeer-review

2 Downloads (Pure)

Field experience with ULTDH substation for multifamily building

Thorsen, J. E. & Ommen, T., 2018, In : Energy Procedia. 149, p. 197-205

Research output: Contribution to journalJournal articleResearchpeer-review

Open Access
File
217 Downloads (Pure)

Heat pump COP, part 1: Generalized method for screening of system integration potentials

Reinholdt, L., Kristófersson, J., Zühlsdorf, B., Elmegaard, B., Jensen, J., Ommen, T. & Jørgensen, P. H., 2018, Proceedings of the13th IIR-Gustav Lorentzen Conference on Natural Refrigerants . International Institute of Refrigeration, Vol. 2. p. 1097-1104

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Open Access
File
1106 Downloads (Pure)

Heat pump COP, part 2: Generalized COP estimation of heat pump processes

Jensen, J. K., Ommen, T., Reinholdt, L., Markussen, W. B. & Elmegaard, B., 2018, Proceedings of the13th IIR-Gustav Lorentzen Conference on Natural Refrigerants . International Institute of Refrigeration, Vol. 2. p. 1136-1145

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Open Access
File
374 Downloads (Pure)

Identification and Evaluation of Cases for Excess Heat Utilisation Using GIS

Bühler, F., Petrovic, S., Ommen, T. S., Holm, F. M., Pieper, H. & Elmegaard, B., 2018, In : Energies. 11, 4, 24 p.

Research output: Contribution to journalJournal articleResearchpeer-review

Open Access
File
531 Downloads (Pure)

Improving the performance of booster heat pumps using zeotropic mixtures

Zühlsdorf, B., Meesenburg, W., Ommen, T. S., Thorsen, J. E., Markussen, W. B. & Elmegaard, B., 2018, In : Energy. 154, p. 390-402

Research output: Contribution to journalJournal articleResearchpeer-review

Open Access
File
25 Downloads (Pure)

Integration of Heat Pump in Combined Heat and Power Plant – Comparison of Vapor Compression and Absorption Technology

Elmegaard, B., Ommen, T., Kaniadakis, G. & Villegas Martínez, M., 2018, Proceedings of the13th IIR-Gustav Lorentzen Conference on Natural Refrigerants . International Institute of Refrigeration, p. 1432-1441

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Open Access
File
145 Downloads (Pure)

Varmepumper og kølemidler

Elmegaard, B., Jørgensen, P. H., Ommen, T. S. & Markussen, W. B., 2018, In : Fjernvarmen. 6, p. 56-57

Research output: Contribution to journalJournal articleCommunication

2017

An experimental analysis of flow boiling and pressure drop in a brazed plate heat exchanger for organic Rankine cycle power systems

Desideri, A., Zhang, J., Kærn, M. R., Ommen, T. S., Wronski, J., Lemort, V. & Haglind, F., 2017, In : International Journal of Heat and Mass Transfer. 113, p. 6-21

Research output: Contribution to journalJournal articleResearchpeer-review

Open Access
File
173 Downloads (Pure)

Booster Heat Pump with Zeotropic Mixtures

Zühlsdorf, B., Meesenburg, W., Ommen, T. S., Thorsen, J. E., Markussen, W. B. & Elmegaard, B., 2017

Research output: Non-textual formSound/Visual production (digital)Research

Open Access
File
49 Downloads (Pure)
55 Downloads (Pure)

Design of serially connected district heating heat pumps utilising a geothermal heat source

Jensen, J. K., Ommen, T. S., Markussen, W. B. & Elmegaard, B., 2017, In : Energy. 137, p. 865-877

Research output: Contribution to journalJournal articleResearchpeer-review

Open Access
File
146 Downloads (Pure)
Open Access
File
324 Downloads (Pure)

Heat Pumps for Efficient and Flexible Heat Supply in Copenhagen

Elmegaard, B., Bühler, F., Jensen, J. K., Jørgensen, P. H., Mancini, R., Markussen, W. B., Meesenburg, W., Ommen, T. S., Pieper, H., Rothuizen, E. D. & Zühlsdorf, B., 2017, Book of Abstracts, Sustain 2017. Technical University of Denmark, 1 p. S-5

Research output: Chapter in Book/Report/Conference proceedingConference abstract in proceedingsResearchpeer-review

Open Access
File
212 Downloads (Pure)

Identification of Excess Heat Utilisation Potential using GIS: Analysis of Case Studies for Denmark

Bühler, F., Petrovic, S., Ommen, T. S., Holm, F. M. & Elmegaard, B., 2017, Proceedings of ECOS 2017: 30th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems. 16 p.

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Open Access
File
334 Downloads (Pure)

Optimal usage of low temperature heat sources to supply district heating by heat pumps

Pieper, H., Ommen, T. S., Markussen, W. B. & Elmegaard, B., 2017, Proceedings of ECOS 2017: 30th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems. 16 p.

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Open Access
File
412 Downloads (Pure)

Performance analysis of heat pumps utilizing different low temperature heat sources to supply district heating

Pieper, H., Ommen, T. S., Markussen, W. B. & Elmegaard, B., 2017

Research output: Non-textual formSound/Visual production (digital)Researchpeer-review

Open Access
File
38 Downloads (Pure)

Performance of ultra low temperature district heating systems with utility plant and booster heat pumps

Ommen, T. S., Thorsen, J. E., Markussen, W. B. & Elmegaard, B., 2017, In : Energy. 137, p. 544-555

Research output: Contribution to journalJournal articleResearchpeer-review

Open Access
File
140 Downloads (Pure)

Thermoeconomic diagnosis and entropy generation paradox

Sigthorsson, O., Ommen, T. S. & Elmegaard, B., 2017, Proceedings of ECOS 2017: 30th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems. 14 p.

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Open Access
File
208 Downloads (Pure)

Two Thermoeconomic Diagnosis Methods Applied to Representative Operating Data of a Commercial Transcritical Refrigeration Plant

Ommen, T. S., Sigthorsson, O. & Elmegaard, B., 2017, In : Entropy. 19, 2, 21 p., 69.

Research output: Contribution to journalJournal articleResearchpeer-review

Open Access
File
294 Downloads (Pure)
2016

Design of serially connected ammonia-water hybrid absorption-compression heat pumps for district heating with the utilisation of a geothermal heat source

Jensen, J. K., Ommen, T. S., Markussen, W. B. & Elmegaard, B., 2016, Proceedings of ECOS 2016: 29th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems. 19 p.

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Open Access
File
191 Downloads (Pure)

Experimental results for hydrocarbon refrigerant vaporization inside brazed plate heat exchangers at high pressure

Desideri, A., Ommen, T. S., Wronski, J., Quoilin, S., Lemort, V. & Haglind, F., 2016, Proceedings of the 16th International Refrigeration and Air Conditioning Conference. p. 2085-2093 2106

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Open Access
File
80 Downloads (Pure)

Integration of large-scale heat pumps in the district heating systems of Greater Copenhagen

Bach, B., Werling, J., Ommen, T. S., Münster, M., Morales González, J. M. & Elmegaard, B., 2016, In : Energy. 107, p. 321-334

Research output: Contribution to journalJournal articleResearchpeer-review

Open Access
File
380 Downloads (Pure)

Integration of space heating and hot water supply in low temperature district heating

Elmegaard, B., Ommen, T. S., Markussen, M. & Iversen, J., 2016, In : Energy and Buildings. 124, p. 255-264

Research output: Contribution to journalJournal articleResearchpeer-review

Open Access
File
322 Downloads (Pure)

Lowering district heating temperatures – Impact to system performance in current and future Danish energy scenarios

Ommen, T., Markussen, W. B. & Elmegaard, B., 2016, In : Energy. 94, p. 273-291

Research output: Contribution to journalJournal articleResearchpeer-review

Open Access
File
703 Downloads (Pure)
2015

Effect of Liquid/Vapour Maldistribution on the Performance of Plate Heat Exchanger Evaporators

Jensen, J. K., Kærn, M. R., Ommen, T. S., Markussen, W. B., Reinholdt, L. & Elmegaard, B., 2015, Proceedings of the 24th IIR International Congress of Refrigeration. International Institute of Refrigeration, 8 p.

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Open Access
File
672 Downloads (Pure)

Enhanced technical and economic working domains of industrial heat pumps operated in series

Ommen, T., Jensen, J. K., Markussen, W. B. & Elmegaard, B., 2015, Proceedings of the 24th IIR International Congress of Refrigeration. International Institute of Refrigeration, 4 p. ID:295

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Open Access
File
209 Downloads (Pure)

Feasible Working Domains – Decision Support for Heat Pump Projects

Ommen, T. S., 2015

Research output: Non-textual formSound/Visual production (digital)Research

Open Access
File
108 Downloads (Pure)

Heat Pumps in CHP Systems: High-efficiency Energy System Utilising Combined Heat and Power and Heat Pumps

Ommen, T. S., 2015, DTU Mechanical Engineering. 316 p. (DCAMM Special Report; No. S187).

Research output: Book/ReportPh.D. thesisResearch

Open Access
File
1920 Downloads (Pure)

Potentialet for brug af Københavns vandforsyningsnet som varmekilde i fjernvarmesystemet bestemt ved hjælp af EPANET-simulerede vandtemperaturer

Hubeck-Graudal, H., Rygaard, M., Elmegaard, B. & Ommen, T. S., 2015, Dansk vand konference 2015: Program. Aarhus: Dansk Vand- og Spildevandsforening - DANVA, p. 14-15

Research output: Chapter in Book/Report/Conference proceedingConference abstract in proceedingsResearchpeer-review

Open Access
File
102 Downloads (Pure)

Technical and economic working domains of industrial heat pumps: Part 1 - single stage vapour compression heat pumps

Ommen, T. S., Jensen, J. K., Markussen, W. B., Reinholdt, L. & Elmegaard, B., 2015, In : International Journal of Refrigeration. 55, p. 168–182 21 p.

Research output: Contribution to journalJournal articleResearchpeer-review

Open Access
File
798 Downloads (Pure)
638 Downloads (Pure)

Trends in energy supply integration: Heat pumps and refrigeration plants for enabling integration of renewable sources in the energy system

Elmegaard, B., Markussen, W. B., Ommen, T. S. & Jensen, J. K., 2015, DTU International Energy Report 2015: Energy systems integration for the transition to non-fossil energy systems. Hvidtfeldt Larsen, H. & Sønderberg Petersen, L. (eds.). Technical University of Denmark, p. 69-73

Research output: Chapter in Book/Report/Conference proceedingBook chapterResearchpeer-review

Open Access
File
213 Downloads (Pure)
2014

Comparison of linear, mixed integer and non-linear programming methods in energy system dispatch modelling

Ommen, T. S., Markussen, W. B. & Elmegaard, B., 2014, In : Energy. 74, p. 109–118 10 p.

Research output: Contribution to journalJournal articleResearchpeer-review

1 Downloads (Pure)