1. Experimental Diagnosis of the Heat Pipe Solar Collector Malfunction. A Case Study
- Author
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Emilian Szczepanski, Pawel Znaczko, Norbert Chamier-Gliszczynski, Jacek Kukulski, and Kazimierz Kaminski
- Subjects
Technology ,Work (thermodynamics) ,Thermal efficiency ,Control and Optimization ,020209 energy ,Energy Engineering and Power Technology ,Mechanical engineering ,02 engineering and technology ,law.invention ,law ,heat pipe defects ,0202 electrical engineering, electronic engineering, information engineering ,Electrical and Electronic Engineering ,thermal efficiency ,heat pipe solar collector ,Engineering (miscellaneous) ,Condenser (heat transfer) ,Renewable Energy, Sustainability and the Environment ,Diagnostic test ,021001 nanoscience & nanotechnology ,Experimental research ,diagnostic investigation ,infrared measurement ,Heat pipe ,phase change materials ,Environmental science ,0210 nano-technology ,Manifold (fluid mechanics) ,Energy (miscellaneous) - Abstract
Work was carried out to diagnose irregularities in the operation of a vacuum-tube solar collector. Experimental investigations of the collector were carried out at the solar collector field test stand in the Laboratory of Solar Collectors at the Koszalin University of Technology. The scope of the work included the following: research on thermal efficiency characteristics, research on the temperature distribution on the solar collector manifold, and research on the geometric structure of the heat pipe and filling with the working medium. Based on the diagnostic tests carried out, the occurrence of incorrect sedimentation in the condenser on the neck of the heat pipe (44%) and an incorrect amount of working medium (66%) were found. The results show that the functioning of the heat pipe significantly depends on its geometric structure and the amount of working medium. Any irregularity at the production stage contributes to a reduction in the thermal efficiency of the solar collector. The results of the experimental research presented in this paper can be used in the diagnostic analyses of solar systems as well as in the organisation of the manufacturing processes of these systems.
- Published
- 2021
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