• Nils Koppels Allé, 403, 024

    2800 Kgs. Lyngby

    Denmark

20112020

Research output per year

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Research Output

Article in proceedings

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
69 Downloads (Pure)

Comparison of operation optimization methods in energy system modelling

Ommen, T. S., Markussen, W. B. & Elmegaard, B., 2013, Proceedings of ECOS 2013 - The 26th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems. Chinese Society of Engineering Thermophysics, 14 p.

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

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
300 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
75 Downloads (Pure)

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
183 Downloads (Pure)

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
656 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
197 Downloads (Pure)

Exergetic evaluation of heat pump booster configurations in a low temperature district heating network

Ommen, T. S. & Elmegaard, B., 2012, Proceedings of ECOS 2012. Desideri, U., Manfrida, G. & Sciubba, E. (eds.). Firenze University Press, 14 p.

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

Open Access
File
361 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
75 Downloads (Pure)

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
51 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
919 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
297 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
324 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
136 Downloads (Pure)

Integration of Space Heating and Hot Water Supply in Low Temperature District Heating

Elmegaard, B., Ommen, T. S., Markussen, M. & Iversen, J., 2014, Proceedings of ECOS 2014, 27st International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems. Åbo Akademi University, 17 p.

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

File
455 Downloads (Pure)

Low Temperature District Heating Consumer Unit with Micro Heat Pump for Domestic Hot Water Preparation

Zvingilaite, E., Ommen, T. S., Elmegaard, B. & Franck, M. L., 2012, Proceedings of the 13th International Symposium on District Heating and Cooling. District Energy Development Center, p. 136-143 8 p.

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

File
848 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
69 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
399 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
55 Downloads (Pure)

Technical and Economic Working Domains of Industrial Heat Pumps: Part 1 - Vapour Compression Heat Pumps

Ommen, T. S., Jensen, J. K., Markussen, W. B., Reinholdt, L. & Elmegaard, B., 2014, Proceedings of 11th IIR Gustav Lorentzen Conference on Natural Refrigerants. Chinese Association of Refrigeration, 8 p.

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

File
364 Downloads (Pure)

Technical and Economic Working Domains of Industrial Heat Pumps: Part 2 - Ammonia-Water Hybrid Absorption-Compression Heat Pumps

Jensen, J. K., Ommen, T. S., Markussen, W. B., Reinholdt, L. & Elmegaard, B., 2014, Proceedings of 11th IIR Gustav Lorentzen Conference on Natural Refrigerants. Chinese Association of Refrigeration, 8 p.

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

File
402 Downloads (Pure)

Thermoeconomic comparison of industrial heat pumps

Ommen, T. S., Markussen, C. M., Reinholdt, L. & Elmegaard, B., 2011, ICR 2011.

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

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
205 Downloads (Pure)

Thermoeconomic Diagnosis of an Energy System for Ship Propulsion

Sigthorsson, O., Elmegaard, B. & Ommen, T. S., 2013, Proceedings of ECOS 2013 - The 26th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems. Chinese Society of Engineering Thermophysics, 13 p.

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

Thermoeconomic model of a commercial transcritical booster refrigeration system

Ommen, T. S. & Elmegaard, B., 2011, Proceedings of ECOS 2011. p. 1632-1644

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

Book

Proceedings of the 1st Symposium on Advances in Refrigeration and Heat Pump Technology

Elmegaard, B. (ed.), Brix, W. (ed.), Kærn, M. R. (ed.), Ommen, T. S. (ed.), Wronski, J. (ed.), Holten-Tingleff, F. (ed.), Poulsen, C. S. (ed.), Jensen, J. B. (ed.), Skovrup, M. J. (ed.) & Jakobsen, A. (ed.), 2012, Kgs.Lyngby: DTU Mechanical Engineering. 325 p.

Research output: Book/ReportBookResearch

Open Access
File
864 Downloads (Pure)
Book chapter

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
200 Downloads (Pure)
Conference abstract in proceedings

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
205 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
100 Downloads (Pure)
Conference article

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
440 Downloads (Pure)
66 Downloads (Pure)
Journal article

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
147 Downloads (Pure)

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 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)

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
130 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

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
18 Downloads (Pure)

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

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
203 Downloads (Pure)
Open Access
File
295 Downloads (Pure)

Heat pumps in combined heat and power systems

Ommen, T. S., Markussen, W. B. & Elmegaard, B., 2014, In : Energy. 76, p. 989–1000

Research output: Contribution to journalJournal articleResearchpeer-review

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
500 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
14 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
336 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
293 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
630 Downloads (Pure)

Numerical model for thermoeconomic diagnosis in commercial transcritical/subcritical booster refrigeration systems

Ommen, T. & Elmegaard, B., 2012, In : Energy Conversion and Management. 60, Special issue, p. 161-169

Research output: Contribution to journalJournal articleResearchpeer-review

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
115 Downloads (Pure)