High Efficiency Solar Thermal Collectors Utilization in Process Heat: A Case Study of Textile Finishing Industry
Solar energy, since it is available every day, is seen as one of the most valuable renewable energy resources. Thus, the energy of sun should be efficiently used in various applications. The most known applications that use solar energy are heating water and spaces. High efficiency solar collectors need appropriate selective surfaces to absorb the heat. Selective surfaces (Selektif-Sera) used in this study are applied to flat collectors, which are produced by a roll to roll cost effective coating of nano nickel layers, developed in Selektif Teknoloji Co. Inc. Efficiency of flat collectors using Selektif-Sera absorbers are calculated in collaboration with Institute for Solar Technik Rapperswil, Switzerland. The main cause of high energy consumption in industry is mostly caused from low temperature level processes. There is considerable effort in research to minimize the energy use by renewable energy sources such as solar energy. A feasibility study will be presented to obtain the potential of solar thermal energy utilization in the textile industry using these solar collectors. For the feasibility calculations presented in this study, textile dyeing and finishing factory located at Kahramanmaras is selected since the geographic location was an important factor. Kahramanmaras is located in the south east part of Turkey thus has a great potential to have solar illumination much longer. It was observed that, the collector area is limited by the available area in the factory, thus a hybrid heating generating system (lignite/solar thermal) was preferred in the calculations of this study to be more realistic. During the feasibility work, the calculations took into account the preheating process, where well waters heated from 15 °C to 30-40 °C by using the hot waters in heat exchangers. Then the preheated water was heated again by high efficiency solar collectors. Economic comparison between the lignite use and solar thermal collector use was provided to determine the optimal system that can be used efficiently. The optimum design of solar thermal systems was studied depending on the optimum collector area. It was found that the solar thermal system is more economic and efficient than the merely lignite use. Return on investment time is calculated as 5.15 years.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1340170Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 1059
 http://www.aee-intec.at/0uploads/dateien561.pdf, Accessed on 18/05/2016.
 http://www.solarthermalworld.org/sites/gstec/files/SoPro_Leaflet_en.pdfAccessed on 18/05/2016.
 Kalogirou S. "The potential of solar industrial process heat applications", Applied Energy, 2003, vol. 76, no. 4, pp. 337-361.
 S Mekhilef, R Saidur, A Safari, "A review on solar energy use in industries", Renewable and Sustainable Energy, 2011, vol. 15, no. 4 pp. 1777-1790.
 Taibi, E, Gielen D, Bazilian M. "Measuring energy poverty: Focusing on what matters", Renewable and Sustainable Energy, 2012, vol.16, no.1, pp. 735-744
 Faninger, G., “The potential of Solar Heat in the future energy system”, IFF-University of Klagenfurt, Austria; www.uni-klu.ac.at/iff/ikn/downloads/Potential_of_Solar_Heat.pdf, Accessed on 18/05/2016
 Vannoni, C., Battisti, R., Drigo, S., Potential for Solar Heat in Industrial Processes, Task 33, 2008. Solar Cooling and Heating Committee of the International Energy Agency (IEA).
 TMMOB Mechanical Engineering Chamber Report, "Türkiye’nin Enerji Görünümü", 2012, pp. 1588
 Kadırgan F., Roll to roll manufacturing of solar selective sheets, PCT patent, PCT/IB2010/055006, WO/2012/059789
 http://www.estif.org/fileadmin/estif/content/policies/downloads/D23-solar-industrial-process-heat.pdf, Accessed on 20/05/2016