Performance Characteristics of Aluminum Thermosyphon for PVT Solar Collector
This article discusses the design of aluminum profile thermosyphons intended for use in PVT solar collectors. PVT solar collectors can simultaneously convert solar energy into electricity and heat, thus increasing the efficiency of solar power installation. The analysis of experimental studies of performance aluminum profile thermosyphons was presented. Graphical dependencies according to their maximum capacity and heat transportation, thermal resistance on the angle relative to the horizon, as well as the heat transfer coefficients in the evaporation zone of a let down on the density of heat flow were presented. The studies were conducted for outside diameters of their hulls 8, 10 and 14 mm; angles in the range from 5 to 90° and in the temperature range from 20 to 80 °C. The analysis of the experimental data allowed us to select the most optimal design of aluminum profile thermosyphon, which outer diameter is 10 mm. This thermosyphon transmits heat flux of more than 150 W, and the thermal resistance of not more than 0.04 K/W for tilt angles of combined solar collector more than 10 degrees.
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