This paper introduces some preliminary results in its design and fabrication of a non-glass solar vacuum tube collector where the thermosyphon (heat pipe) made of copper is used as a heat transfer device. A series of tests have been performed to assess the effects of the air remaining inside a vacuum tube. Different vacuum pressures inside non-glass evacuated tubes were tested along with their time variations to check any leakage or undesirable(unexpected) physical or chemical developments. Temperatures monitored during the process have revealed interesting but important facts concerning its performance to collect and deliver the sun’s energy for water heating.
Keywords. non-glass solar vacuum tube; heat pipe; experimental; performance
References
Chen, K & Chun, W. 2006. Thermosyphons and Thermodiodes for Solar Energy Utilization, in : Hough, T. P. (Editor), Solar Energy : New Research, Nova Science Publisher, pp 199-238, USA.
Peterson,G, P. 1987. Analysis of Heat Pipe Thermal Switch. Research and Development in Heat Pipe Technology. Vol. 6. pp38-41. USA
Chen, K. 1988. Design of a Plane-Type Bidirectional Thermal Diode. ASME Journal of Solar Energy Engineering, Vol. 110 pp299-305, USA.
Kim, J, T, et al. 2007. The Performance Simulation of All-glass Vacuum Tubes with Coaxial Fluid Conduit. International Communications in Heat and Mass Transfer. Vol. 34. pp587-597. UK.
How to cite this article
Hyun, J., Oh, S.J., Kim, N. and Chun, W. (2007). 'Problems and Hurdles in Designing a Nonglass Solar Vacuum Tube Collector'. SET Proceedings, 6(1), pp. 98-102. https://doi.org/10.65582/set.2007.016
