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首页> 外文期刊>Solar Energy >An assessment of thermocline-control methods for packed-bed thermal-energy storage in CSP plants, Part 1: Method descriptions
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An assessment of thermocline-control methods for packed-bed thermal-energy storage in CSP plants, Part 1: Method descriptions

机译：CSP工厂填充床热能存储的温床控制方法评估，第1部分：方法描述

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摘要

Thermocline thermal-energy storage (TES) suffers from so-called thermocline degradation, which refers to the flattening of temperature gradients in the TES with successive charging-discharging cycles. Thermocline degradation increases the variations of the heat-transfer fluid (HTF) outflow temperatures, decreases storage utilization factors, and increases specific TES material costs. Methods that prevent or reduce thermocline degradation by changing the operation of the storage are called thermocline-control (TCC) methods. The assessment of TCC methods is the main objective of this work. Three TCC methods that were chosen for this assessment are described in this paper. Two methods, based on either extracting or injecting HTF through ports, were derived from previously published methods while the third method, based on mixing multiple HTF streams, one of which is extracted through a port, is novel. In a companion paper (Geissbuhler et al., Solar Energy, submitted 2018), the three TCC methods are assessed for air and molten salt as HTF using simulations of stand-alone storages as well as storages integrated into a concentrated solar power plant.
机译：温床热能存储（TES）遭受所谓的温床退化，这是指随着连续的充放电循环，TES中的温度梯度趋于平坦。温跃层的降解会增加传热流体（HTF）流出温度的变化，降低存储利用率，并增加特定TES材料的成本。通过更改存储的操作来防止或减少温跃层退化的方法称为温跃层控制（TCC）方法。 TCC方法的评估是这项工作的主要目标。本文介绍了用于评估的三种TCC方法。从先前公开的方法派生出两种基于通过端口提取或注入HTF的方法，而第三种方法基于混合多个HTF流（其中一种通过端口提取）是新颖的。在随附的论文中（Geissbuhler等人，Solar Energy，2018年提交），使用独立存储库以及集成到集中式太阳能发电厂中的存储库的模拟，对空气和熔融盐作为HTF的三种TCC方法进行了评估。

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  • 来源
    《Solar Energy》 |2019年第1期|341-350|共10页
  • 作者

    Geissbuhler L.; Mathur A.; Mularczyk A.; Haselbacher A.;

  • 作者单位

    Swiss Fed Inst Technol, Dept Mech & Proc Engn, CH-8092 Zurich, Switzerland;

    Terrafore Technol LLC, Minneapolis, MN 55402 USA;

    Swiss Fed Inst Technol, Dept Mech & Proc Engn, CH-8092 Zurich, Switzerland;

    Swiss Fed Inst Technol, Dept Mech & Proc Engn, CH-8092 Zurich, Switzerland;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Thermal energy storage; Thermocline; Packed bed; Thermocline control;

    机译：储热;热床;填充床;热床控制;

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