干旱区生态环境知识资源中心(Arid): 太阳池非对流层分层影响数值模拟研究

Arid

	太阳池非对流层分层影响数值模拟研究
其他题名	Numerical Simulation of the Stratified effect of Non-convective Zone on Solar Ponds
	吴志跃; 张敏; 程芳琴; 张国栋
来源期刊	山西大学学报. 自然科学版
ISSN	0253-2395
出版年	2016
卷号	39 期号:3 页码:528-537
中文摘要	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、35 451.17 MJ、11.84%,而在含NCZ为4层的太阳池中,分别为237.02 MJ、35 294.25 MJ、 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、 29863.08 MJ、7.85%,而在含NCZ为4层的太阳池中,分别上升到为171.48 MJ、32 511.93 MJ、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。
英文摘要	Salt gradient solar pond is an equipment which can collect and store solar energy.Commonly,Solar pond are composed of three layers:Upper Convective Zone(UCZ),Non-convective Zone(NCZ)and Lower Convective Zone(LCZ).In practical engineering application,the gradient layers have great influence on performance of solar pond.For analyzing the effect of NCZ layers on performance of solar ponds,the finite difference method was used to simulate the heat transfer and collection of solar ponds.The results showed that the NCZ layers dramatically affected the performance of solar ponds.With increasing NCZ layers from 0 to 4(fixed thickness of UCZ+NCZ),the solar ponds’heat collection,heat storage and efficiency decreased from February to September,whereas,they increased from October to January next year. In the pond without NCZ in spring and summer,the maximum values of heat collection,heat storage and efficiency could respectively reached 264.33 MJ(February to August)、35451.17 MJ(February to September)、11.84%(February to September),but only were 237.02 MJ、35294.25 MJ、10.72%in the solar pond with four layers of NCZ.While during the autumn and winter,the maximum values of heat collection, heat storage and average efficiency were 144.63 MJ(August to September)、29863.08 MJ(October to January next year)、7.85%(October to January next year),and were 171.48 MJ、32511.93 MJ、8.30%in the solar pond with four layers of NCZ.Therefore,when constructing the solar ponds,the effect of NCZ layers on performance of solar ponds should be considered.According to season,region and application,the pond without NCZ was selected in spring and summer,and the solar pond including NCZ was used in autumn and winter or the desert area of large temperature difference day and night.To develop the advantage for maximizing economic benefit,connected the two kinds of solar pond.
中文关键词	盐梯度太阳池 ; 非对流层 ; 集热量 ; 热效率
英文关键词	Salt-gradient solar pond Non-convective Zone heat collection solar pond efficiency
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ENERGY FUELS ; ENVIRONMENTAL SCIENCES
WOS研究方向	Energy & Fuels ; Environmental Sciences & Ecology
CSCD记录号	CSCD:5777860
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/234705
作者单位	山西大学资源与环境工程研究所,山西资源循环与生态环境创新基地, 国家环境保护煤炭废弃物资源化高效利用技术重点实验室, 太原, 山西 030006, 中国
推荐引用方式 GB/T 7714	吴志跃,张敏,程芳琴,等. 太阳池非对流层分层影响数值模拟研究[J],2016,39(3):528-537.
APA	吴志跃,张敏,程芳琴,&张国栋.(2016).太阳池非对流层分层影响数值模拟研究.山西大学学报. 自然科学版,39(3),528-537.
MLA	吴志跃,et al."太阳池非对流层分层影响数值模拟研究".山西大学学报. 自然科学版 39.3(2016):528-537.