Progress in Agricultural Engineering Sciences
Volume/Issue:
Volume 5: Issue 1
Developing and testing solar collectors
Authors:
István Patay Szent István University Institution of Technology and Water Management, Faculty of Water and Environmental Management Szarvas Hungary

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Miklós Erdélyi Szeged University Department of Optics and Quantum Electronics Szeged Hungary

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László Gulyás Szent István University Institution of Technology and Water Management, Faculty of Water and Environmental Management Szarvas Hungary

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Pages:
55–74
Online Publication Date:
18 Dec 2009
Publication Date:
01 Dec 2009
Article Category:
Research Article
DOI:
https://doi.org/10.1556/progress.5.2009.3
Keywords:
solar thermal collectors; micro-concentrator; collector efficiency
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A relatively new trend is the development of concentrator-type solar collectors and cells for the use in micro-concentrators. The geometry of these concentrators is simple, the reflexion surfaces or mirrors are usually flat-plate surfaces. The relations of radiation in the inner spaces of these collectors are complicated. The OSLO optical edition software can be used to study and simulate the light paths in the concentrator elements and resonators, using the laws of geometrical optics. Based on the results of study and simulation, a pilot collector was built for energetic testing. In the applied arrangement, the absorber surface was the heated tube itself and fitted exactly to the inlet concentration surfaces. By this way, the relation of the absorber surface and collecting surface was reduced to 0.25. Since the radiation losses decreased, the efficiency of the pilot collector was relatively high even at high outlet temperature conditions (50% at 50 °C outlet temperature and Δ T = 18 °C). The optical concentration of solar radiation energy is a possible way to increase the liquid heat transporter collector efficiency and the outlet temperature. Importance of air solar collectors is lower, but their application in some agricultural post-harvest processes (drying, desiccating) may be useful and profitable. A flat-plate-plate solar air collector was built and tested, with special absorber geometry and material. The results of tests are also shown in this study. The proved daily ΔT-asymmetry at both of pilot collectors is an important result for the practice. Practically it means that the afternoon hours are more favorable for the energy production than the morning hours. Since this effect probably exists in all types of solar collectors, the practice of horizontal direction of collectors needs modifying.

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Cover Progress in Agricultural Engineering Sciences
Progress in Agricultural Engineering Sciences
Print ISSN:
1786-335X
Online ISSN:
1787-0321

Senior editors

Editor(s)-in-Chief: Felföldi, József

Chair of the Editorial Board Szendrő, Péter

Editorial Board

  • Beke, János (Szent István University, Faculty of Mechanical Engineerin, Gödöllő – Hungary)
  • Fenyvesi, László (Szent István University, Faculty of Mechanical Engineering, Gödöllő – Hungary)
  • Szendrő, Péter (Szent István University, Faculty of Mechanical Engineering, Gödöllő – Hungary)
  • Felföldi, József (Szent István University, Faculty of Food Science, Budapest – Hungary)

 

Advisory Board

  • De Baerdemaeker, Josse (KU Leuven, Faculty of Bioscience Engineering, Leuven - Belgium)
  • Funk, David B. (United States Department of Agriculture | USDA • Grain Inspection, Packers and Stockyards Administration (GIPSA), Kansas City – USA
  • Geyer, Martin (Leibniz Institute for Agricultural Engineering and Bioeconomy (ATB), Department of Horticultural Engineering, Potsdam - Germany)
  • Janik, József (Szent István University, Faculty of Mechanical Engineering, Gödöllő – Hungary)
  • Kutzbach, Heinz D. (Institut für Agrartechnik, Fg. Grundlagen der Agrartechnik, Universität Hohenheim – Germany)
  • Mizrach, Amos (Institute of Agricultural Engineering. ARO, the Volcani Center, Bet Dagan – Israel)
  • Neményi, Miklós (Széchenyi University, Department of Biosystems and Food Engineering, Győr – Hungary)
  • Schulze-Lammers, Peter (University of Bonn, Institute of Agricultural Engineering (ILT), Bonn – Germany)
  • Sitkei, György (University of Sopron, Institute of Wood Engineering, Sopron – Hungary)
  • Sun, Da-Wen (University College Dublin, School of Biosystems and Food Engineering, Agriculture and Food Science, Dublin – Ireland)
  • Tóth, László (Szent István University, Faculty of Mechanical Engineering, Gödöllő – Hungary)

Prof. Felföldi, József
Institute: MATE - Hungarian University of Agriculture and Life Sciences, Institute of Food Science and Technology, Department of Measurements and Process Control
Address: 1118 Budapest Somlói út 14-16
E-mail: felfoldi.jozsef@uni-mate.hu

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2024  
Scopus  
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Scimago  
SJR index 0.378
SJR Q rank Q2

2023  
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CiteScore 1.8
CiteScore rank Q2 (General Agricultural and Biological Sciences)
SNIP 0.497
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SJR index 0.258
SJR Q rank Q3

Progress in Agricultural Engineering Sciences
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Progress in Agricultural Engineering Sciences
Language English
Size B5
Year of
Foundation		 2004
Volumes
per Year		 1
Issues
per Year		 1
Founder Magyar Tudományos Akadémia  
Founder's
Address		 H-1051 Budapest, Hungary, Széchenyi István tér 9.
Publisher Akadémiai Kiadó
Publisher's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Responsible
Publisher		 Chief Executive Officer, Akadémiai Kiadó
ISSN 1786-335X (Print)
ISSN 1787-0321 (Online)

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