Low temperature district heating systems represent an important share of the future heating supply. Such systems utilize waste heat from different systems and the heat from renewable sources. Furthermore, they show a potential to be implemented as a link between various energy sectors. The low temperature level of the district […]
Within the ERC project SUPERCOOL and ARRS project J2-1738 we have developed a new, unique numerical model that serves as a tool for parametric analysis and the development of micro-cooling systems for cooling of electronic components based on electrocaloric and elastocaloric materials. An article entitled: Caloric micro-cooling: Numerical modeling and […]
The article was published in the Journal of Applied Physics and is available here.Thermal control elements, i.e., thermal diodes, switches, and regulators, can control the heat flow in an analogous way in how electronic devices control electrical currents. In particular, a thermal diode allows a larger heat flux in one […]
The latest research results of the ERC SUPERCOOL project were published in the paper Thin-walled Ni-Ti tubes under compression: ideal candidates for efficient and fatigue-resistant elastocaloric cooling in highly ranked journal Applied Matrials Today (IF 8.013). The paper is available here. Elastocaloric cooling is emerging as one of the most promising […]
The latest research results of the ERC SUPERCOOL project were published in the chapter A Shell Finite Element Model for Superelasticity of Shape Memory Alloys of the book entitled Analysis of Shells, Plates, and Beams. The chapter is available here.
Recently published paper in International Journal of Refrigeration reports on flow visualization of the refrigerant R600a through a capillary tube (link). (Open access link (50 days)) Abstract: This paper presents the results of an experimental study of the flow visualization of the refrigerant R600a through a capillary tube with […]
The article: Numerical and experimental investigation of the energy and exergy performance of solar thermal, photovoltaic and photovoltaic-thermal modules based on roll-bond heat exchangers has been published in Energy Conversion and Management journal (IF = 7.181, 2019, top 5%). Link to the article*: https://authors.elsevier.com/c/1akEjin8VZz4e. Abstract: This paper presents […]
Along with environmentally-friendly refrigerants, high energy efficiency of refrigeration systems and heat pumping will represent the foundation of future refrigeration, heating and air-conditioning systems. Recuperation and utilization of waste heat at various temperature levels will enable significantly lower energy consumption not only for heating and refrigeration, but also for generation […]
On the international Conference on caloric cooling, which will be held in June 2020 in Maryland USA, prof. dr. Andrej Kitanovski (magnetoaloric cooling) and assist. prof. dr. Jaka Tušek (elastocaloric cooling – ERC project SUPERCOOL) will present their work in two pelnary lectures: Kitanovski: The Future of the Magnetocaloric […]
In the extensive Encyclopedia of Smart Materials (Reference Module in Materials Science and Materials Engineering) a paper on Applications on magnetocaloric materials was published. The paper is available here. Abstract: The first market applications of magnetocaloric materials were in low-temperature physics and magnetic resonance imaging. These important applications, however, represent […]
Probably the most comprehensive overview of elastocaloric technology to date was just published in a special issue of Strojniški vestnik – Journal of Mechanical Engineering devoted to the 100th anniversary of Faculty of Mechanical Engineering, University of Ljubljana. The article puts an emphasis on the direction of future development of […]
Demonstration cooling device based on electrocaloric effectThe collaborators of the Laboratory for Refrigeration and District Energy of the Faculty of Mechanical Engineering of the University of Ljubljana and the departments of Electronic Ceramics and Condensed Matter Physics of the Jozef Stefan Institute were among the first in the world to […]
The review paper Thermal control elements for caloric energy conversion was published in Renewable & Sustainable Energy Reviews. The paper is has open access until January 3rd 2020 (link). Abstract: Caloric energy conversion is an emerging field of cooling, heat-pumping and power-generation technologies. The potentially high energy efficiency and use […]
In the year we are celebrating the centenary of the University of Ljubljana, we are also celebrating the centenary of mechanical engineering, which a special and admirable event. Namely, the University of Ljubljana was founded on 23rd July 1919 by a special bill; while 19th May 1919 saw the beginning […]
The 2019 E-MRS Fall Meeting was held in Warsaw University of Technology, from September 16th to 19th. There were more than 1000 participants from all over the world. The members of LAHDE presented our work in two contributions and invited lecture: Urban Tomc: Digital microfluidics in caloric cooling Using the […]
The paper Electrocaloric refrigeration: Thermodynamics, state of the art and future perspectives (M. Ozbolt, A. Kitanovski, J. Tusek, A Poredos) was awarded by International Journal of Refrigeration for a Very Commended Paper. The paper is available here.
From August 24-30, 2019, Montreal (Canada), the birthplace of the 1987 Montreal Protocol, hosted the 25th IIR International Congress of Refrigeration –ICR 2019. Covering all fields of refrigeration, ICR 2019 surpassed the success of previous congresses and was a unique opportunity for researchers and engineers from all over the world […]
In the middle of May international scientific conference on Shape Memory and Superelastic Technology (SMST) 2019 took place at The Bodenseeforum in Konstanz, Germany. This is the leading worldwide conference and exposition for the shape memory and superelastic technologies and is highly focused on the manufacturing and application of shape […]
The paper Exergy analyses of low-temperature district heating systems with different sanitary hot-water boosters was published in Entropy Journal. Abstract: This paper presents an exergy-efficiency analysis of low-temperature district heating systems (DHSs) with different sanitary hot-water (SHW) boosters. The main objective of this study was to compare the exergy efficiencies […]
The research article co-authored by members of LAHDE laboratory entitled Neural network, ARX, and extreme learning machine models for the short-term prediction of temperature in buildings was published in Building Systems and Components journal in April 2019. Abstract In this paper, the possibilities of developing machine learning based data-driven […]
Do you want to leave a footprint in one of today’s most important research area of thermal engineering? You are offered a PhD position in the research group of prof. Andrej Kitanovski. About the topic The latest research activities in the field of the heat transfer regard the phenomena […]
The international Interclima conference is dedicated to research in the field of technical thermodynamics and to the energy efficiency improvements in thermal energy systems, primarily in the buildings and industry, in the context of the regulations subjected to the implementation of EU Directives in national legislation. Prof. Kitanovski held the […]
The International Conference of SZE (Slovenian Energy Association) took place in the beginning of April in Porotož. It hosted more than 200 attendees, who presented 47 contributions in sustainable and clean energy supply for heating and cooling. The LAHDE presented: Comparative techno-economic analysis of using gas engine-driven heat pumps in […]
In december 2018 we attended the Nanoscale and Microscale Heat Transfer conference in Levi, Finland. The Book of Abstracts is available here.
The article was publishe in the International Journal of Refrigeration (link) Abstrakt This paper reports on the research and development of a cooling device with an active electrocaloric regenerator (AER) based on the bulk ceramic material (1-x)Pb(Mg1/3Nb2/3)O3–xPbTiO3 (PMN-100xPT). For the purposes of the study a 2D transient numerical model of […]
The article was published in Applied Energy Journal (link) Abstract This article reports on the novel resistive electromagnetic field source with the magnetic energy recovery, which enables the use of the static magnetocaloric regenerator. Most of the existing prototype magnetocaloric devices that operate near room temperature, use magnetic field sources […]
In September 2108 we attended the International Conference on Caloric Cooling in Darmstadt. Our contributions were in the field of magnetocalorics and elastocalorics: Rare-earth-free magnetic field source (invited talk), Magnetocaloric wine cooler with rare-earth-free magnet assembly, Challenges in designing elastocaloric regenerators. [metaslider id=573]