Research To Improve The Solar Collector Efficiency And The Equipment Of Heat Converted Into Steam

The rapid economic development has led to intensified energy consumption and serious environmental pollution, which is becoming a favorable way to solve the problem that energy conservation and development of renewable energy. Studies have shown that thermal power can be achieved of using high temperature solar thermal, which can solve the shortage of conventional energy status quo. Firstly, this topic introduced the current energy situation at home and abroad, and the actual situation in Yunnan Province, pointing out that the feasibility of the research; Secondly, it describes the use of domestic and international solar thermal research and development, and ultimately raised the significance of the use of solar thermal power generation based on previous research in this subject.Existing study on the group pre-studies have shown that centralized supply heating has good economic prospects and environmental benefits in Yunnan Province, which is mainly in the development of tourism. Centralized power supply heating in the industrial park has good economic prospects and environmental benefits. Yunnan Province, unique climate and solar conditions, the development of solar thermal systems is feasible. It is effective to develop solar resource-based development and distributed energy systems for solar energy-light diesel complementary. With current study, collection efficiency is not high, insulation and heat transfer effects are not ideal, this topic is on this basis of targeted in-depth studies in order to solve the above problem.The research is including the collection efficiency to improve the system efficiency of heat transfer and insulation effect, the experiment to produce steam. The subject is mainly concentrated in the research phase of the solar temperature (200℃), which can provide basic data for the use of the high solar temperature.Firstly, in order to improve the collection efficiency, the experimental system is based on optimized trough solar energy instead of solar cookers, and come to the best experimental conditions for conducting oil flow rate of1m3/h, water flow rate was0.22m3/h; Under the optimal experimental conditions, the pressure tank in the heating time2.8h, can achieve circular waterway pressure reaches0.12MPa, the produce steam.Secondly, in the research of thermal storage and insulation effect, we have analyzed thermal storage and thermal energy storage materials, and use Sensible heat storage to Conduct oil and water as a heat storage material heat storage experiments, get the better thermal storage conditions and thermal storage, which provides a theoretical basis for the latter experiments. The experiment also improved insulation measures to improve the insulation effect. The results show that in the medium temperature (200℃), oil as heat storage media unit time heat storage298J/s, the effect of heat storage is higher than the water; in the medium temperature insulation, use improved insulation measures, heat loss rate of the system will have varying degrees reduction. From200℃down to70℃, the heat loss rate is of2312J/s, and from70℃down to the environment temperature (21℃), the heat loss rate of the new system is876J/s. In addition, optimize the design of the thermal conditions in the heat storage experiments。The Conclusion is that the greatest impact to the insulation effect of the thermal storage system is environmental temperature in the current experimental conditions。Thirdly, to improve heat transfer efficiency, immersion snake tube heat exchanger is replaced to the plate heat exchanger. The Conclusion is that the relationship is little between heat transfer efficiency and collector effect.With the research, we have received the effect of experimental, and it has provided theoretical data for the further study. Problems encountered in the course of the study, which provided directions for later research.