We describe the development of a new type of heat exchanger. This heat exchanger operates using reverse thermosiphon action and consists of a self-acting and self-controlled liquid circulation loop with heat transfer in a downward direction, opposite to the direction of natural convection. This process moves a heat-carrying hot liquid downwards with the help of local heat transferred through the loop. This flow loop is partly filled with liquid and the upper part of the loop contains vapour from the liquid heat-carrier. The pressure difference in the saturated vapour is used to move the heated liquid downwards. The principles of action and the possibility of developing such a device using laboratory experimental methods are presented.
Beni G.De, Friesen R., Thoma H. and Veneroni R.: Device for passive downward heat transport: desing criteria and operational result, Advances in Heat Pipe Technology, London 1982, 673-684.
Bezrodny, M. K., Pioro, I. L. and Kostyuk, T. O.: Transfer Processes in Two-Phase Thermosyphon Systems. Theory and Practice, 2nd edn., Fact Publ. House, Kiev 2005 (in Russian).
Davidson J. H.,Walker H. A., Lof G. O. G.: Experimental study of a self - pumping boiling collector solar hot water system, Journal of Solar Energy Engineering, 111(3), 1989, 211-218.
Dobriański J., Fieducik J., Derela E.: Investigations of the device spontaneously transporting heat in opposite direction to natural convection, XII Symposium of Heat and Mass Transfer, Academy of Mining and Metallurgy Publishers, Cracow 2004, 199-202 (in Polish).
Dobriansky Y., Duda M.: Algorithm for processing in Excel experimental data set of cycling processes, Technical Sciences, 10(2007), 69-80.
Dobryansky Y., Fieducik J.: The first applying of reverse flow circuit for solar collector, Proceeding of the VII World Renewable Energy Congress, 2002, 396.
Fieducik H.: MSc thesis, University of Warmia and Mazury, Olsztyn 2003 (in Polish).
Fieducik J.: PhD thesis, The Szewalski Institute of Fluid-Flow Machinery Polish Academy of Sciences, Gdansk 2005.
Perrot P.: A to Z of Thermodynamics, Oxford University Press, New York 1998.
Heating and Air-conditioning hand book, 1st edn., EWFE, Gdansk 1994 (in Polish).
Roberts C. C.: A Review of Heat Pipe Liquid Delivery Concepts/Advances in heat pipe technology, Pergamon Press, Oxford 1982, 693-702.
Walker H. A., Davidson J. H.: Second - law analysis of a two-phase self-pumping solar water heater, Journal of Solar Energy Engineering, 1992, 188-190.
Walker H. A., Davidson J. H.: Analysis and simulation of a two-phase self-pumping water heater, Journal of Solar Energy Engineering, 112(1990), 153-160.
Wong Y. W. and Sumathy K.: Solar water pump with u-pentane and ethyl ether as working fluids, Energy Conversion and Management. Exeter, Elsevier Science Ltd., 41, 2000, 915-927.