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Analysis of the Influence of the Heat-Absorbing Surface of an Air-Cooled Solar Collector on its Thermal and Mechanical Properties

Abstract

This paper presents the analysis of existing forms of heat absorbing surfaces of air solar collectors, which gained the greatest popularity in the world. The obtained data allowed to conclude that there is a need for the development of solar collectors with air as a coolant with an improved form of heat absorber, which will reduce the operational and capital costs of solar systems and allow the efficient use of such structures in a moderate climate without additional mechanisms for the transfer of coolant. The use of computer simulation helped to compare the thermal characteristics of air-borne solar collectors of a different design. The substantiation of the expediency of installing as a heat absorber of flow turbulators in the form of a screw has been fulfilled, as well as the height of the air channel of the solar collector has been determined, in which the maximum heating of the transfer medium is observed. In addition, the loss of pressure in the air channel of the solar collector with flow turbulators was determined and the comparison of the obtained data with the values of pressure losses in the air collector of the matrix type and the air collector with V-shaped ribs was made.

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Safety of Photovoltaic Installations and Analysis of the Costs of Using Photovoltaic Panels Producing Energy for the Needs of Customers in Central Poland

Abstract

The article discusses the general problem of the use of renewable energy in Poland. The boundary conditions justifying the economic basis for the construction of photovoltaic power plants producing energy for the own needs of customers were determined. The research method uses a standard model of cash flows where revenues are avoided costs of purchase and distribution of energy due to the production of electricity from PV for own needs. The article also presents technical aspects related to the construction of photovoltaic micro-installations. Particular attention has been paid to the protection of photovoltaic installations, the hazards resulting from the operation of photovoltaic installations, and health and safety at work during design and implementation.

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Simulations of Safety Vales for Fluid Power Systems

, A., Stryczek, J., Walczak, P., 2018. Tests of New Methods of Manufacturing Elements for Water Hydraulics . Mater. Res. Proc., 5, 200-205. Lisowski E., Filo G., Rajda J., 2015. Pressure compensation using flow forces in a multi-section proportional directional control valve . Energy Convers. Manag., 103, 1052-1064. Lisowski E., Filo G., 2016. CFD analysis of the characteristics of a proportional flow control valve with an innovative opening shape . Energy Convers. Manag., 123, 15-28. Lisowski E., Filo G., Rajda J., 2018. Analysis of flow

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Ex-Ante Risk Estimation in the Production Project

REFERENCES A Guide to the Project Management Body of Knowledge 5th Edition., 2013. PMI, USA. Bradley, K., 2002. Ken Bradley’s understanding PRINCE2 . SPOCE Project Management Ltd., Poole, UK. Filo, G., Lisowski, E., Domagala, M., Fabis-Domagala, J., Momeni, H., 2018. Modelling of pressure pulse generator with the use of a flow control valve and a fuzzy logic controller . MSM 2018: 14th Int. Conf. Mechatronic Systems and Materials, Zakopane, Poland, AIP Conf. Proc., 2029, art. 020015. DOI: 10.1063/1.5066477 Goroshko, A., Royzman, V

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The Revitalization of Radar System as a Case of Functional and Information Security Problems

tribology model . Metal 2017: 26 th Int. Conf. Metallurgy and Materials, Ostrava, Tanger, 1252-1257. Ferdek, U., Kozien, M.S., 2013. Simulation of application of FGM piezoelectric actuators for active reduction of beam vibrations . Acta Phys. Pol. A, 123, 1044-1047. Filo, G., Lisowski, E., Domagala, M., Fabis-Domagala, J., Momeni, H., 2018. Modelling of pressure pulse generator with the use of a flow control valve and a fuzzy logic controller . MSM 2018: 14 th Int. Conf. Mechatronic Systems and Materials, Zakopane, Poland, AIP Conf. Proc., 2029, art

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Hydraulic Systems Safety by Reducing Operation and Maintenance Mistakes

control valve flow coefficient with the usage of a CFD method . Flow Meas Instrum 53, 269-278. Maszke, A., Dwornicka, R., Ulewicz, R., 2018. Problems in the implementation of the lean concept at a steel works – Case study . MATEC Web Conf., 183, art. 01014. Pacana, A., Ulewicz, R., 2017. Research of Determinants Motiving to Implement the Environmental Management System . Pol. J. Manag. Stud. 16, 165-174. Phadke, M.S., 1989. Quality Engineering using Robust Design . Prentice Hall, Englewood Cliffs, USA. Pietraszek, J., Szczotok, A., Kolomycki

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Safety of CMS Experiment Systems Operation – Integration of a New CO2 Fire Extinguishing Weighing System to the CMS Safety Panel

Materials, 60, 735-738, DOI: 10.1515/amm-2015-0199 Korzekwa, J., Skoneczny, W., Dercz, G., Bara, M., 2014. Wear mechanism of Al2O3/WS2 with PEEK/BG plastic . Journal of Tribology, 136, art. 011601. DOI: 10.1115/1.4024938 Lisowski, E., Filo, G., 2017. Analysis of a proportional control valve flow coefficient with the usage of a CFD method . Flow Measurement and Instrumentation, 53, 269-278, DOI: 10.1016/j.flowmeasinst.2016.12.009 Miller, C., 2018. Hands-On Data Analysis with NumPy and pandas: Implement Python packages from data manipulation to

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Influence of the Environment on the Operational Safety of a Fluidized Bed Boiler

. Coat. Tech., 259, 401-407. DOI: 10.1016/j.surfcoat.2014.10.062 Shrestha, S., Ali, B.S., Binti Hamid, M.D., 2016. Cold flow model of dual fluidized bed: A review . Renew. Sust. Energ. Rev., 53, 1529-1548. DOI: 10.1016/j.rser.2015.09.034 Szabracki, P., Lipinski, T., 2014a. Influence of sigma phase precipitation on the intergranular corrosion resistance of X2CrNiMoN25-7-4 super duplex stainless steel . Metal 2014: 23 rd Int. Conf. Metallurgy and Materials. Tanger, Ostrava, 476-481. Szabracki, P., Lipinski, T., 2014b. Effect of Aging on the

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The Smoothed Bootstrap Fine-Tuning

Power Systems Technology, 8th FPNI Ph.D Symposium on Fluid Power, art. V001T04A001. Ulewicz, M., Radzyminska-Lenarcik, E., 2014. Application of Polymer and Supported Membranes with 1-Decyl-4-Methylimidazole for Pertraction of Transition Metal Ions . Separation Science and Technology, 49, 1713-1721. Ulewicz, R., Jelonek, D., Mazur, M., 2016. Implementation of logic flow in planning and production control . Management and Production Engineering Review, 7, 89-94. Ulewicz, R., Novy, F. R., 2016. The influence of the surface condition on the fatigue

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The Management and Potential Risk Reductionin the Processing of Rare Earths Elements

and Materials, Ostrava, Tanger, 1252-1257. Ferdek, U., Kozien, M.S., 2013. Simulation of application of FGM piezoelectric actuators for active reduction of beam vibrations . Acta Phys. Pol. A, 123, 1044-1047. Filo, G., Fabis-Domagala, J., Domagala, M., Lisowski, E., Momeni, H., 2018a. The idea of fuzzy logic usage in a sheet-based FMEA analysis of mechanical systems . MATEC Web Conf., 183,art. 03009. Filo, G., Lisowski, E., Domagala, M., Fabis-Domagala, J., Momeni, H., 2018b. Modelling of pressure pulse generator with the use of a flow control

Open access