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太阳池一般分为三层:上对流层(Upper Convective Zone,UCZ)、非对流层(Non-convective Zone,NCZ)和下对流层(Lower Convective Zone,LCZ),工程实践中非对流层对太阳池的性能影响较大。为了探讨非对流层层数对太阳池性能的影响状况,利用数值模拟方法,采用有限差分法模拟计算太阳池内的传热过程。计算结果表明,NCZ层数对太阳池性能有重要影响。在UCZ+NCZ厚度不变的条件下,随着太阳池NCZ层数在0-4之间增加,集热量、储热量、热效率分别在2-7月、2-9月、2-9月出现逐渐降低。无NCZ太阳池的最高单日集热量、储热量、热效率分别为264.33 MJ、35 451.17MJ、11.84%,而在含NCZ为4层的太阳池中,分别为237.02MJ、35 294.25MJ、10.72%。而随着NCZ层数的增加,太阳池单日集热量、储热量、平均热效率分别在8-12月、10-1月(次年)、10-1月(次年)出现逐渐升高,无NCZ太阳池的最高单日集热量、储热量、平均热效率分别为144.63 MJ、29863.08MJ、7.85%,而在含NCZ为4层的太阳池中,分别上升到为171.48MJ、32 511.93MJ、8.30%。因此,在构建太阳池时,应考虑NCZ层数对太阳池的影响,根据季节、地域、用途等条件,在3-9月尽量采用无NCZ太阳池,在10-2月(次年)或者昼夜温差较大的荒漠地区则建议采用含NCZ太阳池,而为了充分利用不同太阳池的优势,可以将无NCZ太阳池与含NCZ太阳池串联使用来达到经济效益最大化。
The solar ponds are generally divided into three layers: Upper Convective Zone (UCZ), Non-convective Zone (NCZ) and Lower Convective Zone (LCZ), and the impact of non-tropospheric performance on solar ponds in engineering practice Larger. In order to investigate the effect of non-tropospheric layer number on solar cell performance, the numerical simulation method was used to simulate the heat transfer process in the solar cell by finite difference method. The calculation results show that the number of NCZ layers has an important influence on solar cell performance. Under the condition of constant thickness of UCZ + NCZ, with the increase of the number of layers of NCZ in the solar cell between 0 and 4, the amount of heat accumulation, heat storage and thermal efficiency appeared from February to July, from February to September and from February to September respectively Gradually decreases. The maximum single-day heat collection, heat storage and thermal efficiency of the NCZ solar pool were 264.33 MJ, 35 451.17MJ and 11.84% respectively, while in the solar pool with NCZ of 4 layers were 237.02MJ, 35 294.25MJ and 10.72% . With the increase of the number of NCZ layers, the daily solar heat pool heat storage, heat storage and average thermal efficiency gradually increased from August to December, October to January (the second year) and October to January (the following year) The maximum single-day heat collection, heat storage and average thermal efficiency of the NCZ solar pool were 144.63 MJ, 29863.08MJ and 7.85% respectively, while in the solar pool with NCZ of 4 layers, it increased to 171.48MJ and 32 511.93MJ respectively, 8.30%. Therefore, when building a solar pool, the influence of the number of NCZ layers on the solar pond should be taken into consideration. According to the season, area and purpose, the NCZ solar pool should be used as far as from March to September. In October-February (next year) or The NCZ solar ponds are recommended for use in deserts where the temperature difference between day and night is large. To maximize the economic benefits, NCN solar ponds can be used in tandem with the NCZ solar ponds to take full advantage of the advantages of different solar ponds.