Thermosyphon Systems: Sensitivity Analysis Regarding Optimum Energetic Performance and Cost Effectiveness
Abstract
In the past, thermosyphon systems have not been part of development and market activities of most central European manufacturers. Nowadays, these manufacturers are confronted with more and more saturated local markets. Hence, these industries are looking for possibilities in export, mainly in the regions around the Mediterranean Basin. In these regions thermosyphon systems correspond to the customers´ demand in an ideal manner because the purchase costs are moderate and the daily production of hot water is sufficient. A research project of the CENTRE OF EXCELLENCE FOR RENEWABLE ENERGY RESEARCH aims at the development of an optimised thermosyphon solar hot water heater with respect to performance and cost effectiveness. In addition to measurement data collected on the institute’s thermosyphon system test stand, a detailed simulation model was developed to identify the most important design driving parameters. This simulation resulted in optimised thermosyphon system designs related to the respective location – Ingolstadt (D), Rome (I) and Malaga (E). According to the simulation the collector was designed and constructed so far. The other parts of the system will be handled the same way. Especially the material selection, the insulation thickness and the casing height bring along a cost reduction potential without any energetic drawback.