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首页> 外文学位 >CONCEPTUAL DESIGN OF A PHOTOVOLTAIC SOLAR CENTRAL RECEIVER POWER SYSTEM (COGENERATION, SOLAR ENERGY, HELIOSTATS).
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CONCEPTUAL DESIGN OF A PHOTOVOLTAIC SOLAR CENTRAL RECEIVER POWER SYSTEM (COGENERATION, SOLAR ENERGY, HELIOSTATS).

机译：光伏太阳能中央接收器电源系统的概念设计（发电，太阳能，定日镜）。

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摘要

The technical and economic feasibility of combining photovoltaics with central receiver technology is evaluated in light of recent developments in high-efficiency, high-concentration ratio, point-contact, solar cells. Not only can the central receiver approach produce the necessary solar concentration, but it also simplifies the problem of cell cooling and enables cogeneration of heat and electricity.; Using a specially modified version of the University of Houston computer code for central receivers, a variety of power plant designs were investigated. Electrical and thermal outputs of plants sized between 2.5 MWe and 30 MWe were computed and cost estimates made. Under certain stated conditions, the optimum size for these plants was found to be in the range of 25 to 30 MWe. Capital costs on the order of {dollar}1.60 per peak watt were estimated with plant capacity factors slightly greater than 20%. The fraction of the capital cost associated with photovoltaics was found to be on the order of only one-tenth, so total costs are relatively insensitive to the price of the solar cells themselves.; The economic feasibility of these "photovoltaic central receivers" was evaluated with traditional levelized cost measures as well as from the point-of-view of private ownership with power sales to the utility grid. Under optimum conditions and with stated assumptions, the fraction of capital costs that might be recovered from first-year revenues was estimated to be on the order of 9% without thermal sales and as high as about 20% with cogeneration.; Since many utilities are summer peaking, and pay more for power during summer afternoons, the potential advantage of a heliostat field that is oriented about a southeast-to-northwest axis rather than the traditional north-south axis was evaluated. This new off-axis design delivers peak power in the afternoon but, with current utility buy-back rates, the added economic benefit of doing so was found to be only modest. A sensitivity analysis was performed to determine how rapidly the off-axis design advantage increases as utilities increase the differential price paid for peaking power.
机译：根据高效，高浓度比，点接触式太阳能电池的最新发展，评估了将光伏技术与中央接收器技术相结合的技术和经济可行性。中央接收器的方法不仅可以产生必要的太阳光，而且还可以简化电池冷却的问题，并实现热电联产。使用针对中央接收器的休斯顿大学计算机代码的特殊修改版本，对各种电厂设计进行了研究。计算了大小在2.5 MWe和30 MWe之间的电厂的电和热输出，并进行了成本估算。在某些规定的条件下，发现这些植物的最佳大小为25至30 MWe。估计每峰瓦的资本成本约为1.60美元，而工厂的产能系数则略大于20％。发现与光伏相关的资本成本的比例仅为十分之一，因此总成本对太阳能电池本身的价格相对不敏感。这些“光伏中央接收器”的经济可行性已通过传统的分层成本衡量标准进行了评估，并从私有所有权的角度进行了评估，并向电网销售了电力。在最佳条件下并有明确的假设，在没有热力销售的情况下，可以从第一年收入中收回的资本成本的比例估计为9％左右，而热电联产则高达20％左右。由于许多公用事业在夏季达到顶峰，并在夏季午后支付更高的电费，因此评估了定日镜场沿东南-西北轴线而不是传统的南北轴线定向的潜在优势。这种新的离轴设计在下午提供了峰值功率，但是，按照当前的公用事业回购率，这样做的额外经济利益被认为是很小的。进行了敏感性分析，以确定随着公用事业增加为峰值功率支付的差价，离轴设计优势的增长速度有多快。

著录项

  • 作者

    ABOU-RACHED, RENE GEORGE.;

  • 作者单位

    Stanford University.;

  • 授予单位 Stanford University.;
  • 学科 Engineering Civil.
  • 学位 Ph.D.
  • 年度 1984
  • 页码 289 p.
  • 总页数 289
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 建筑科学;
  • 关键词

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