Feike, Frederik ; Oltmanns, Johannes ; Dammel, Frank ; Stephan, Peter (2021):
Evaluation of the waste heat utilization from a hot-water-cooled high performance computer via a heat pump.
In: Energy Reports, 7 (Supplement 4), pp. 70-78. Elsevier, ISSN 2352-4847,
DOI: 10.1016/j.egyr.2021.09.038,
[Article]

Oltmanns, Johannes ; Sauerwein, David ; Dammel, Frank ; Stephan, Peter ; Kuhn, Christoph (2020):
Potential for waste heat utilization of hot-water-cooled data centers: A case study.
In: Energy Science & Engineering, 8 (5), pp. 1793-1810. e-ISSN 2050-0505,
DOI: 10.1002/ese3.633,
[Article]

Ripp, Christopher ; Beykirch, Mario ; Oltmanns, Johannes ; Steinke, Florian (2020):
Multi-modales Echtzeit Energiemonitoring - Multi-modales echtzeit Energiemonitoring als Basis eines digitalen Zwillings des Energiesystems des Campus Lichtwiese der Technischen Universität Darmstadt.
Digitalisieren - Sektoren koppeln - Flexibilisieren. Systemische Integration der Bioenergie und weiterer erneuerbarer Energien in Gebäuden & Quartieren, virtual Conference, 24.11.2020, [Conference or Workshop Item]

Dammel, Frank ; Oltmanns, Johannes ; Stephan, Peter (2019):
Nutzung der Abwärme des Hochleistungsrechners am Campus Lichtwiese.
In: Euro Heat & Power, pp. 28-31. EW Medien und Kongresse GmbH, ISSN 0949-166X,
[Article]

Oltmanns, Johannes ; Freystein, Martin ; Dammel, Frank ; Stephan, Peter (2018):
Improving the operation of a district heating and a district cooling network.
In: Energy Procedia, 149, pp. 539 - 548. Elsevier, ISSN 1876-6102,
DOI: 10.1016/j.egypro.2018.08.218,
[Article]

Oltmanns, Johannes ; Dammel, Frank ; Stephan, Peter (2017):
Modeling the heat supply system of TU Darmstadt Campus Lichtwiese.
In: Proceedings of ECOS 2017 – The 30th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems, pp. 383-394,
30th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 2017), San Diego, USA, 02.-06.07.2017, ISBN 978-1-5108-6256-2,
[Conference or Workshop Item]

Sauerwein, D. ; Oltmanns, Johannes (2017):
EnEff:Stadt Campus Lichtwiese, Energieeffiziente Weiterentwicklung durch intelligente Systemvernetzung.
1. Kongress ENERGIEWENDEBAUEN 2017, Berlin, Germany, 30.-31.01.2017, [Conference or Workshop Item]