Georgios Maliaris is currently a Professor in the Dept. of Chemistry of Democritus University of Thrace, vice president of the department and director of the post graduate program “Nanotechnology”. Participated in more than 32 research projects originating from European, national or direct industrial funding, coordinating three of them. Member of organizing and scientific committees of 13 national and international conferences. He has published 36 papers on scientific journals and 48 papers on peer reviewed conferences with more than 650 citations according to Scopus (h-index=13). Reviewer in several scientific journals in the field of material science, mechanics and automation.
Dimitrios Stathokostopoulos is a postdoctoral researcher in the Department of Physics at Aristotle University of Thessaloniki, where completed his studies and obtained a doctoral degree. His research interests include the synthesis of thermoelectric materials and metallic coatings using mechanical and chemical methods. He encompasses structural and morphological characterization, as well as thermoelectric and thermal measurements. He has published 19 research papers and presented at over 40 international conferences. He has received a postdoctoral fellowship in the field of thermoelectric materials from the State Scholarships Foundation of Greece. Finally, he has participated in two research programs focusing on thermoelectric materials.
Dr. Lamprini Malletzidou, physicist, is a Research Associate at “Athena” R.C., Greece. Until now, she has participated in 13 research programs regarding: restorative dentistry materials for personal dosimetry applications, polymers, wood, and nano-composite materials, thermoelectrics, agricultural waste materials for circular economy applications and toxic compounds removal, and archaeometric materials. Her research experience is summarized in materials studies using microscopic, spectroscopic, X-rays, thermoanalytical, and luminescence techniques. Her work focuses on the characterization of artifacts, natural and synthetic bio-materials, pharmaceutics, minerals, thermoelectrics, adhesive systems, polymers, composite materials, and the ageing and dating of artifacts.
Associate Professor Fani Stergioudi is a member of the Metallurgy Laboratory of the Department of Mechanical Engineering of the Aristotle University of Thessaloniki. Her scientific interests focus on the characterization of the structure of metal materials, the evaluation of mechanical properties and the study of corrosion of metals. She has published 54 papers in international peer-reviewed journals and 60 papers in international and national conferences. She has participated in several research and technological development projects from national and international funding organizations and directly from industry. She is a member of committees organizing international conferences while for her research in the field of metallic materials she has received 2 honorary distinctions.
Prof. George Vourlias is the Director of the “Advanced Materials and Devices” Laboratory, School of Physics, Aristotle University of Thessaloniki, Greece. His research activity focuses on technology, growth and X-ray characterization of thick coatings. His research interests can be summarized in: I) Growth of thick coatings, thin films and nanostructured materials with chemical and physical deposition methods (Hot dip galvanizing, thermal spraying, CVD, electrodeposition, sputtering, cathodic-arc PVD), II) Structural characterization using X-ray techniques [X-ray diffraction (XRD) and X-ray photoelectron Spectroscopy (XPS)]. Study of corrosion resistance of the as formed materials and coatings. Investigation of the oxidation mechanisms and the resistance of the materials.
Ioanna Sfampa holds a Ph.D. in Physics from the Aristotle University of Thessaloniki. Her academic background also includes a Bachelor's degree in Physics, a Master degree in Physics & Materials Technology, and postdoctoral research. She has published 22 scientific papers in peer-reviewed international journals, participated in numerous scientific conferences, and holds two patents. She has been working at KLEEMANN since 2016 as an Innovation Researcher and Specialist in patents and intellectual property. She has participated in a total of 3 national research projects as a researcher and has been involved as a scientific collaborator in two postgraduate programs.
The design of an air conditioning device using computational fluid dynamics (CFD) is presented. Different constraints, such as limited installation area, efficient performance, short response time and noiseless operation, are considered. To overcome these constraints, instead of using a "traditional" heat pump, a more sophisticated principle was decided to be implemented, which is known as the Peltier effect. Using Thermo-Electric Coolers (TECs), it is possible to adjust the air temperature inside a cabin quickly and efficiently.
The use of CFD software aims to determine the dimensions of the heat exchanger as well as the operational parameters such as cooling power and air velocity. The main aim is the construction of an elevator air conditioning system that is able to fit even in the smallest areas, and not being visible especially in cases, such as, a panoramic elevator. In parallel, the system should be efficient enough, compared to widely used air conditions, and energy saving.
* This research was carried out as part of the project «Design and implementation of innovative lift's air-conditioning systems by using thermoelectric devices» (Project code: ΚΜΡ6-0074109) under the framework of the Action «Investment Plans of Innovation» of the Operational Program «Central Macedonia 2014 2020», that is co-funded by the European Regional Development Fund and Greece.
Design of a compact air conditioning unit for elevators using CFD and thermoelectric coolers .
G. Maliaris¹ , M. Pappa², N. Michailidis, D. Stathokostopoulos³, L. Malletzidou³, F. Stergioudi², G. Vourlias² & I. K. Sfampa⁴.
¹Democritus University of Thrace, ²Aristotle University of Thessaloniki, Faculty of Engineering, ³Aristotle University of Thessaloniki, School of Physics, ⁴KLEEMANN SA , Greece.