Performance comparison of two-tank direct and thermocline thermal energy storage systems for 1 MWe class concentrating solar power plants

被引：108

作者：

Cocco, Daniele ^{[1
]}

Serra, Fabio ^{[2
]}

机构：

[1] Univ Cagliari, Dept Chem Mech & Mat Engn, I-09123 Cagliari, Italy

[2] Solar Concentrat Technol & Hydrogen RES Lab, I-09010 Uta, CA, Italy

来源：

ENERGY | 2015年 / 81卷

关键词：

Thermal energy storage; Thermocline storage; CSP plants; Linear Fresnel collector; ORGANIC RANKINE CYCLES; LOW-GRADE HEAT; PACKED-BED; PARABOLIC TROUGH; SIMULATION; CONVERSION; OPERATION; STEAM;

D O I：

10.1016/j.energy.2014.12.067

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

This paper compares the performance of medium size CSP (Concentrating Solar Power) plants based on an ORC (Organic Rankine Cycle) power generation unit and using linear Fresnel collectors, thermal oil as heat transfer fluid and two-tank direct and thermocline energy storage systems. The comparative performance analysis was carried out by means of specifically developed simulation models and considering different values of solar multiple and thermal energy storage capacity. The results of the performance assessment demonstrate that if the CSP plant has to be optimized for the highest specific energy production, that is, for the highest solar energy conversion efficiency, two-tank energy storage systems show slightly higher performance than thermocline storage systems. However, the study also demonstrates that thermocline storage systems can be an interesting option to reduce the energy production cost of CSP plants. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：526 / 536

页数：11

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