对太阳能热发电走向成功之路的思考INSIGHTS INTO THE SUCCESS OF SOLAR THERMAL POWER GENERATION
黄卫东
摘要(Abstract):
从理论方面对降低太阳能热发电投资成本的方式进行了分析,认为可通过扩大规模来降低投资成本,依靠扩大发电系统的规模和优化镜场设计来提高太阳能热发电系统的光电转换效率;碟式和点聚焦菲涅耳聚光系统的光热转换效率高,竞争力较强。当采用超大功率蒸汽轮机时,可使发电系统的规模扩大10倍、热电转换效率提高25%;按照光学效率和接收器热效率均达到92%计算,碟式聚光系统的光热转换效率可达到84.64%,而塔式聚光系统的光热转换效率为57.73%,前者比后者提高了46.62%,使碟式太阳能热发电系统的光电转换效率比塔式太阳能热发电系统的提高了83.3%,从而使碟式太阳能热发电系统的总投资成本比塔式太阳能热发电系统的下降了45.4%,共用跟踪系统使其总投资成本又下降了4.8%,再加上碟式太阳能热发电系统的中发电系统规模扩大10倍,最终,碟式太阳能热发电系统的总投资成本可比塔式太阳能热发电系统的降低75.2%。在不考虑材料和制造技术方面进步的情况下,太阳能热发电的上网电价可从目前的1元/kWh降至约0.25元/kWh,使太阳能热发电成为未来有竞争力的主要能源技术。
关键词(KeyWords): 太阳能热发电;聚光系统;碟式;点聚焦菲涅耳;投资成本;上网电价
基金项目(Foundation):
作者(Author): 黄卫东
DOI: 10.19911/j.1003-0417.tyn20200426.02
参考文献(References):
- [1]STINe W B,DIVeR R B.A compendium of solar dish/stirling technology[eB/OL].(2020-03-18).https://www.docin.com/p-265284665.html.
- [2]包伟伟,杨宇,康剑南,等.1350 MW超超临界二次再热机组总体设计及经济性分析[J].汽轮机技术,2017,59(1):21-25.
- [3]冯伟忠,李励.国家煤电示范项目--安徽平山电厂二期1350 MW高低位二次再热超超临界机组工程[C]//2017年清洁燃煤发电中国国际论坛,济南,2017.
- [4]SINGH T,HUSSIEN M A A,AL-ANSARI T,et al.Critical review of solar thermal resources in GCC and application of nanofluids for development of efficient and cost effective CSP technologies[J].Renewable&sustainable energy reviews,2018,91:708-719.
- [5]金建祥.调峰可行,成本下降路径清晰!中控太阳能金建祥多角度谈太阳能热发电发展[eB/OL].[2019-03-20].http://www.sohu.com/a/302616472_120093798.
- [6]上海市政工程设计研究总院(集团)有限公司.给水排水设计手册(第3版)--技术经济(第10册)[M].北京:中国建筑工业出版社,2012.
- [7]SARGENT&LUNDY LLC CONSULTING GROUP.Assessment of parabolic trough and power tower solar technology cost and performance forecasts[J/OL].[2003-10]https://doi.org/NReL/SR-550-34440.
- [8]LOVEGROVE K,BURGESS G,PYE J.A new 500 m2paraboloidal dish solar concentrator[J].Solar energy,2011,85(4):620-626.
- [9]50 MW冷凝式汽轮机.50 MW冷凝式汽轮机说明书[eB/OL].[2011-04-14].https://wenku.baidu.com/view/de81fbacf242336c1fb95e8c.html.
- [10]上海发电设备成套设计研究院.大型火电设备手册:汽轮发电机[M].北京:中国电力出版社,2009.
- [11]WEI W,GOBEREIT B,SINGER C,et al.Direct absorption receivers for high temperatures[C]//SolarPACeS 2011,September 20-23,2011,Granada,Spain.
- [12]HAFeZ A Z,SOLIMAN A,eL-MeTWALLY K A,et al.Design analysis factors and specifications of s o l a r d i s h t e c h n o l o g i e s f o r d i ff e r e n t s y s t e m s a n d applications[J].Renewable&sustainable energy reviews,2017,67:1019-1036.
- [13]JAMALI H.Investigation and review of mirrors reflectance in parabolic trough solar collectors(PTSCs)[J].energy reports,2019,5:145-158.
- [14]NWOSU C A,ONUU M U.Fabrication and characterization of reflectors by physical vapour deposition of nanoscale thin films of Ag and Cu for concentrated solar thermal power applications[J].Journal of energy engineering,2017(72):39-50.
- [15]HASS G.Reflectance and preparation of front surface mirrors for use at various angles of incidence from the ultraviolet to the far infrared[J].Journal of the optical society of America,1982,72(1):27-39.
- [16]KENNEDY C,TERWILLIGER K,MILBOURNE M.Development and Testing of Solar Reflectors[R].US:Office of Scientific&Technical Information Technical Reports,2005.
- [17]ULMeR S,M?RZ T,PRAHL C,et al.Automated high resolution measurement of heliostat slope errors[J].Solar energy,2011,85(4):681-687.
- [18]ULMeR S,HeINZ B,POTTLeR K,et al.Slope error measurements of parabolic troughs using the reflected image of the absorber tube[J].Journal of solar energy engineeringtransactions of the ASMe,2009,131(1):104-108.
- [19]孙陆乐宁.组合碟式太阳能系统建模与优化[D/OL].北京:中国科学技术大学,2018[2018-09-18].http://cdmd.cnki.com.cn/article/cdmd-10358-1018098300.htm.
- [20]HOFFSCHMIDT B,SCHWARZB?ZL P,KOLL G,et al.Design of the PS10 solar tower power plant[C]//ISeS Solar World Congress 2003,June 14-19,2003,G?teburg,Sweden.
- [21]HU P,HUANG W D.Performance analysis and optimization of an integrated azimuth tracking solar tower[J].energy,2018,157:247-257.