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以槽式太阳能集热器为研究对象,根据热力学第二定律建立能量传递模型,分析其光热转换过程中 损产生的机理、分布特点以及影响 效率的主要因素。结果表明,槽式集热器的 损主要发生在聚光和吸热管的吸热过程中;保持集热器真空度、维持传热介质湍流流动可有效提高集热器的 效率。
Based on the second law of thermodynamics, the trough solar collector is taken as the research object, and the energy transfer model is established based on the second law of thermodynamics. The mechanism, distribution characteristics and the main factors affecting the efficiency of loss during light-heat conversion process are analyzed. The results show that the loss of trough collector mainly occurs in the heat absorption process of condenser and absorber tube. Maintaining the vacuum degree of collector and maintaining the turbulent flow of heat transfer medium can effectively improve the efficiency of collector.