EVALUATION OF THE THERMAL PERFORMANCE OF A SOLAR WATER HEATING THERMOSYPHON VERSUS A TWO-PHASE CLOSED THERMOSYPHON USING DIFFERENT WORKING FLUIDS
A water heating closed two-phase thermosyphon solar system was designed and built. The system consists of a flat plate solar collector coupled to a thermotank by a continuous copper tubing in which the working fluid circulates. The working fluid evaporates in the collector and condensates in the thermotank transferring its latent heat to the water through a coil heat exchanger. The tested fluids are acetone and R134a. The thermal performance of the proposed systems is compared with a conventional solar water thermosyphon under the same operating conditions. Advantages of a two-phase system include the elimination of freezing, fouling, scaling and corrosion. Geometry and construction materials are the same except for the closed circuit presented in the two-phase system. Data were collected from temperature and pressure sensors throughout the two systems. Early results suggest that R134a may provide a better performance than acetone for this kind of systems.
A.Ordaz-Flores O.García-Valladares V.H.Gómez
Posgrado en Ingeniería (Energía), Universidad Nacional Autónoma de México Privada Xochicalco s/n Tem Centro de Investigación en Energía, Universidad Nacional Autónoma de México Privada Xochicalco s/n T
国际会议
2007世界太阳能大会(Proceedings of ISES Solar World Congress 2007)
北京
英文
2007-09-18（万方平台首次上网日期，不代表论文的发表时间）