Didier Vuarnoz was born in 1977. His first position was an apprenticeship in the engineering office of Bonnard & Gardel SA in Lausanne. After completion, he worked as a heating designer for the same company. During this period, he participated in the retrofit of the former nuclear power plant of Lucens, and at the main office of the Swiss Center for Electronics and Micro-technology (CSEM) in Neuchatel. Then, he studied at the University of Applied Sciences of Western Switzerland (HEIG-VD), where he obtained his diploma in thermal engineering in 1999, with a prize from the Sulzer company. After further employment and as a result of his work on the visualization of ice slurry and its storage for the experimental group (Thermal Industrial Systems, TIS) of the Institute for Thermal Sciences (IGT) at the HEIG-VD, he received a fellowship from the Academy of Engineering Sciences of Switzerland (SATW) to continue his research in Japan.
During his stay at Hokkaido University (2002-2003) and Okayama University (2003), he conducted experimental work with an ultrasonic velocity profiler (UVP) on phase change slurries (PCS). At that time, Vuarnoz also became an active member of the Working Party of the International Institute of Refrigeration (IIR) on Phase Change Slurries. After this first stay in Asia, he returned to his former university in Switzerland (HEIG-VD), where he was given responsibility for the experimental PCS research group in physical properties and thermodynamic and fluid dynamic behaviour. The main achievements of the group were published in the Handbook of Ice-slurries edited by the IIR (2005).
In 2007, Vuarnoz joined the division of Prof. Egolf named Simulations of Thermal Systems, SIT. He entered the field of magnetocalorics, focusing on numerical computations of refrigeration, heat pumping and magnetic energy conversion systems. Furthermore, he became an active member of the Working Party on Magnetic Refrigeration (at Room Temperature) of the IIR. In 2008, he visited Prof. Alan Hatton's research group for several months at MIT in the US. In 2009, he was chosen by the Japanese Ministry of Education for a grant supporting a PhD at a Japanese university. Under the supervision of Prof. T. Kawanami at Kobe University, he investigated both experimentally and by simulation active magnetic regenerators for three and a half years, before graduating in Spring 2013 with his thesis entitled Reflections and Evaluations of the Performances in Magnetocaloric Systems.
At this time, the implementation of his work on magnetocaloric energy conversion machines was judged by a report edited by the Swiss Federal Office of Energy (Helbin and Bill, 2014) to have – for Germany alone – a market potential of 1.6 billion CHF and an annual carbon mitigation of 1.3 million tons of C02 eq. In 2013, Vuarnoz came back to Switzerland, again to rejoin the group of Prof. Egolf (HEIG-VD) for a commitment in thermo-magnetism. The following two years were dedicated to a novel treatment for cancer (hyperthermia) within a national inter-institutional research team. This innovative method relies on rotating nanowires inducing local hyperthermia. Since 2015, Vuarnoz has been working as a senior scientist for the Swiss Federal Institute of Technology (EPFL) on energy strategies and carbon emission mitigation in buildings.
Vuarnoz has co-signed to two patents and authored 16 journal papers and 48 conference papers. With a group of researchers, he has also proposed five new dimensionless numbers to the scientific community. Furthermore, he is a regular reviewer for several journals, including International Journal of Refrigeration, Energy Conversion and Management, Applied Energy, and International Journal of Heat and Mass Transfer. He has also served several times as a chairman at international conferences, such as Thermag II, ICR 2011, and TFEC 2012.
Fields of expertise
Low Carbon & Energy Efficient Buildings
D. Vuarnoz; T. Jusselme : Neutral global warming potential target of electricity storage as threshold for greenhouse gas emission mitigation in buildings. 2018-12-10. Passive and Low Energy Architecture conference (PLEA 2018): Smart and Healthy within the 2-degree Limit, Hong-Kong, December 10-12, 2018. p. 1217.
D. Vuarnoz; S. Cozza; T. Jusselme; G. Magnin; T. Schafer et al. : Integrating hourly life-cycle energy and carbon emissions of energy supply in buildings; Sustainable Cities and Society. 2018-08-29. DOI : 10.1016/j.scs.2018.08.026.
D. Vuarnoz; T. Jusselme : Temporal variations in the primary energy use and greenhouse gas emissions of electricity provided by the Swiss grid; Energy. 2018-07-24. DOI : 10.1016/j.energy.2018.07.087.
T. Schafer; E.-L. Niederhauser; G. Magnin; D. Vuarnoz : Development and validation of an intelligent algorithm for synchronizing a low-environmental-impact electricity supply with a building’s electricity consumption. 2018. The 4th International Conference on Renewable Energy Technologies (ICRET 2018), Kuala Lumpur, Malaysia, January 16-18, 2018.
T. Jusselme; A. Brambilla; V. Costa Grisel; S. Cozza; E. Hoxha et al. : Smart Living Building Research Program - Executive Summary. 2017.
A. Poncety; A. Brambilla; E. Hoxha; D. Vuarnoz; S. Cozza et al. : Graphical representation of the smart living building research program ; Building2050 Scientific Workshop, Gruyères, Switzerland, October 2016.
D. Vuarnoz : Réussir un suivi énergétique efficace et rentable de son bâtiment : outils, limites et facteurs de succès ; Build & Connect: TECHNOLOGIES ET PRATIQUES PIONNIÈRES DANS LE BÂTIMENT DURABLE, Strasbourg, France, Novembre 22-23, 2016.
P. Egolf; N. Shamsudhin; S. Pané; D. Vuarnoz; J. Pokki et al. : Hyperthermia with rotating magnetic nanowires inducing heat into tumor by fluid friction; Journal of Applied Physics. 2016. DOI : 10.1063/1.4960406.
T. Jusselme; D. Vuarnoz : smart living building - Living the Future. 2016.
D. Vuarnoz; T. Jusselme; S. Cozza; E. Rey; M. Andersen : Studying the Dynamic Relationship between Energy Supply Carbon Content and Building Energy Demand. 2016. PLEA 2016 Los Angeles - 36th International Conference on Passive and Low Energy Architecture. Cities, Buildings, People: Towards Regenerative Environments, Los Angeles, California, USA, July 11-13, 2016.
P. Egolf; A. Noume; D. Vuarnoz; G. Gottschalk : “Edificio Traspirante”: Sistema d’Aria Condizionata Decentro Con Facciata Solare Integrate; Industria & Formazione. 2015.
T. Kawanami; D. Vuarnoz : Overview of Deployment of Magnetic Refrigeration in Heat Pump Systems; Newsletter- Iea Heat Pump Center. 2015.
T. Jusselme; A. Brambilla; S. Cozza; E. Hoxha; M. Jiang et al. : Du projet de recherche à la construction du smart living building ; Table ronde : du projet de recherche à la construction du smart living building, Fribourg, Suisse, 2 octobre 2015.
T. Kawanami; S. Hirano; A. Toba; D. Vuarnoz : Comprehensive Consideration on AMR Configuration for Magnetocaloric Heat Pump; TEION KOGAKU (Journal of Cryogenics and Superconductivity Society of Japan). 2015. DOI : 10.2221/jcsj.50.72.
T. Jusselme; A. Brambilla; E. Hoxha; Y. Jiang; D. Vuarnoz et al. : Building 2050 - Scientific concept and transition to the experimental phase. 2015.
T. Jusselme; A. Brambilla; E. Hoxha; Y. Jiang; D. Vuarnoz et al. : Building 2050 - State-of-the-arts and preliminary guidelines. 2015.
D. Vuarnoz; P. Egolf; S. Gama; A. Coelho : Second-Order Magnetocaloric Model Substance for Standardization Purposes. 2015. 24th International Congress of Refrigeration, Yokohama, Japan, August, 16-22, 2015.
P. W. Egolf; S. Gama; D. Vuarnoz : Thermomagnetism with external and internal magnetic field quantities; Journal Of Applied Physics. 2015. DOI : 10.1063/1.4923415.
P. Egolf; A. Noume; D. Vuarnoz; G. Gottschalk : Breathing building: A decentralized façade-integrated solar air-conditioning system; Indistria & Formazione - International special issue 2014-2015. 2014.
D. Vuarnoz / T. Kawanami (Dir.) : REFLECTIONS AND EVALUATIONS OF THE PERFORMANCES IN MAGNETOCALORIC SYSTEMS. Graduate School of Engineering, Kobe University, 2013.
P. W. Egolf; D. Vuarnoz; L. Grainer; G. Courret : The thermodynamics of devices with solid layered-bed magnetocaloric refrigerants; International Journal Of Refrigeration-Revue Internationale Du Froid. 2012. DOI : 10.1016/j.ijrefrig.2012.05.008.
D. Vuarnoz; A. Kitanovski; C. Gonin; P. W. Egolf; T. Kawanami : Modeling and Simulation of the Operation of a Rotary Magnetic Refrigerator; Journal Of Thermal Science And Technology. 2011. DOI : 10.1299/jtst.6.21.
C. Muriset; P. Egolf; D. Vuarnoz; P. Haas : Casa Minergie(TM) Bajada y Cambio de Fase de los Perfiles de Temperatura con Materiales de Cambio de Fase; Frio-Calor-Aire Acondicionado. 2010.
E. Zatsepnia; A. Tishin; P. Egolf; D. Vuarnoz : MAGNETOCALORIC EFFECT APPLIED FOR A CANCER TUMOR DEFEAT: AN IMPROVED HYPERTHERMIA METHOD. 2009. 3rd International Conference on Magnetic Refrigeration at Room Temperature, Des Moines, Iowa, USA, May 11-15, 2009.
A. Kitanovski; C. Gonin; D. Vuarnoz; O. Sati; P. Egolf : A standardization of the coefficient of performance for magnetic refrigerators, heat pumps and energy conversion machines. 2009. 3rd International Conference on Magnetic Refrigeration at Room Temperature, Des Moines, Iowa, USA, May 11-15, 2009.
D. Vuarnoz; A. KItanovski; C. Gonin; O. Sari; P. Egolf : Modelling of a two-stage magnetic refrigerator with wavy-structure gadolinium heat exchangers. 2009. 3rd International Conference on Magnetic Refrigeration at Room Temperature, Des Moines, Iowa, May 11-15, 2009.
D. Vuarnoz; A. Kitanovski; C. Gonin; P. Egolf; T. Kawanami : Modeling and simulation of the operation of a rotary magnetic refrigerator. 2009. The 5th Asian Conference on Refrigeration and Air Conditioning, Waseda University, Tokyo, Japan, June, 7-9, 2009.
P. W. Egolf; A. Kitanovski; M. Diebold; C. Gonin; D. Vuarnoz : Magnetic power conversion with machines containing full or porous wheel heat exchangers; Journal Of Magnetism And Magnetic Materials. 2009. DOI : 10.1016/j.jmmm.2008.11.044.
A. Kitanovski; D. Vuarnoz; P. Egolf ; A magnetocaloric device, especially a magnetic refrigerator, a heat pump or a power generator. EP2108904 . 2008.
A. Kitanovski; D. Vuarnoz; P. Egolf ; A permeable magnetocaloric material and a magnetic refrigerator, a heat pump or a power generator using this material. WO2009124408 ; EP2109119 . 2008.
P. W. Egolf; A. Kitanovski; D. Ata-Caesar; D. Vuarnoz; F. Meili : Cold storage with ice slurries; International Journal Of Energy Research. 2008. DOI : 10.1002/er.1340.
P. Egolf; A. Kitanovski; D. Vuarnoz; M. Diebold; C. Besson : Introduzione alla Refrigerazione Magnetica; Industria & formation. 2007.
D. Vuarnoz; A. Kitanovski; M. Diebold; F. Gendre; P. W. Egolf : A magnetic heat pump with porous magneto caloric material; physica status solidi (c). 2007. DOI : 10.1002/pssc.200777154.
C. Doetsch; A. Kitanovski; T. Hansen; B. Frei; D. Vuarnoz et al. : Chapter 3: Fluid Dynamics; Handbook on ice slurries: Fundamentals and Engineering; Paris: International Institute of Refrigeration IIR-IIF, 2005. p. 55-81.
T. Zwieg; D. Vuarnoz; T. Hansen; B. Frei; A. Melinder et al. : Chapter 2: Ice creation, thermophysical properties of ice slurries and other characteristics; Handbook on ice slurries: Fundamentals and Engineering; Paris: International Institute of refrigeration, 2005. p. 19-53.
A. Kitanovski; D. Vuarnoz; D. Ata-Caesar; P. Egolf; T. Hansen et al. : The fluid dynamics of ice slurry; International Journal Of Refrigeration-Revue Internationale Du Froid. 2005. DOI : 10.1016/j.ijrefrig.2004.07.010.
D. Vuarnoz; D. Ata-Caesar; O. Sari; P. Egolf : Ultrasonic measurements in ice slurry generation by direct contact evaporation. 2004. 4th International Symposium on Ultrasonic Doppler Method for Fluid Mechanics and Fluid Engineering, Sapporo, Japan, September 6-8, 2004. p. 153-156.
P. Egolf; O. Sari; D. Ata-Caesar; R. Lugo; D. Vuarnoz et al. : The ice slurry technology after some years of its introduction. 2004. HVAC&R System, envelope and urban context: Integration and new vision of design and operation: AICARR 2004, Milano, March, 3-4, 2004. p. 587-594.
D. Vuarnoz; Y. Tasaka; Y. Takeda; A. Horibe; N. Haruki : Transmission characteristics of ultrasonic waves in fine particles of phase-change-material-water slurry. 2003. Thermophysical properties 24 - The Twenty-fourth Japan Symposium, Okayama, Japan, Ocotber 6-8, 2003. p. 134-136.
P. Egolf; O. Sari; S. Schneider; D. Vuarnoz : ONLINE ENTHALPY MEASUREMENT METHOD FOR PHASE CHANGE SLURRIES. 2002. Fifth Workshop on Ice Slurries of the International Institute of Refrigeration, Stockholm, Sweden., May 30-31, 2002. p. 54-66.
P. Egolf; D. Vuarnoz; O. Sari : PARTICLE FIELDS OF ICE SLURRIES WITH STRATIFICATIONS AND MELTING. 2002. International Conference on Solid–Liquid Phase Change’02, Tokyo, Japan, January 11, 2002. p. 99-104.
P. Egolf; D. Vuarnoz; O. Sari; D. Ata-Caesar; A. Kitanovski : Front propagation of ice slurry stratification processes. 2002. p. 54-66.
F. Meili; O. Sari; D. Vuarnoz; P. Egolf : Storage and mixing of ice slurries in tanks. 2001. the third IIR Workshop on Ice Slurries., Horw, Switzerland, May 16-18,2001. p. 97-104.
P. Egolf; O. Sari; F. Meili; D. Vuarnoz : PRESSURE DROP AND HEAT TRANSFER IN A CYLINDRICAL HEAT EXCHANGER WITH ICE SLURRY FLOW. 2001. Third Workshop on Ice Slurries of the International Institute of Refrigeration, Horw, Switzerland, May 18-21, 2001. p. 77-84.
P. Egolf; D. Vuarnoz; O. Sari : A model to calculate dynamical and steady-state behavior of ice particles in ice slurry storage tank. 2001. Fourth Workshop on Ice Slurries of the international Institute of Refrigeration, Osaka, Japan, November 12-13, 2001. p. 25-39.
O. Sari; D. Vuarnoz; F. Meili; P. Egolf : Visualization of ice slurries and ice slurry flows. 2000. the second Workshop on Ice Slurries of the IIR, Paris, France, May 25-26, 2000. p. 68-80.
O. Sari; F. Meili; D. Vuarnoz; P. Egolf : Thermodynamics of moving and melting ice slurries. 2000. the second Workshop on Ice Slurries of the IIR, Paris, France, May 25-26, 2000. p. 140-153.
P. Egolf; O. Sari; F. Meili; P. Moser; D. Vuarnoz : HEAT TRANSFER OF ICE SLURRIES IN PIPES. 1999. First Workshop on Ice Slurries of the International Institute of Refrigeration, Yverdon, Switzerland, May 27-28, 1999. p. 106-123.