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首页> 外文期刊>Energy Conversion & Management >A comparative study between ORC and Kalina based waste heat recovery cycles applied to a green compressed air energy storage (CAES) system
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A comparative study between ORC and Kalina based waste heat recovery cycles applied to a green compressed air energy storage (CAES) system

机译：基于ORC和Kalina废热回收循环的比较研究，应用于绿色压缩空气储能（CAES）系统

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摘要

Intermittent nature of the generated power from renewable energy resources and a higher demand for electricity during peak demand periods have intensified the need for grid-scale energy storage systems. Compressed air energy storage system, owing to significant merits such as minimum geographical and environmental limits and high reliability, has attracted attention in recent years. To improve efficiency, its hybridization with various waste heat recovery cycles has been taken into the account. To provide the grid with further power during peak demand periods, organic Rankine and Kalina cycles are the most practical alternatives. Hence, the combination of a green compressed air energy storage with various lowand medium-temperature waste heat recovery cycles is analyzed in the present article to address the most feasible choice in diverse working conditions. The sub critical and supercritical organic Rankine cycles with different working fluids (R717, R1270, R290, and R1234yf), as well as two Kalina cycles (KCS11 and KCS34) are analyzed from the perspective of the first and second laws of thermodynamics and compared with each other. The results indicate that the energy and exergy round trip efficiencies can be improved by 1.69-2.67% and 1.70-2.69%, compared to the stand-alone compressed air energy storage. The supercritical organic Rankine cycle with R290 as the working fluid is the best alternative, which recovers the highest amount of wasted heat and improves the production capacity by 2.47%.
机译：来自可再生能源资源的产生功率的间歇性质和高峰需求期间对电力的更高的需求增强了对网格级能量存储系统的需求。由于最小的地理和环境限制和高可靠性等显着优点，压缩空气储能系统引起了近年来的重视。为了提高效率，其杂交与各种废物热回收循环已被采用到账户中。为了在峰值需求期间提供具有进一步的功率的电网，有机朗肯和Kalina循环是最实用的替代品。因此，在本制品中分析了具有各种Lowand中温废热回收循环的绿色压缩空气储能储存的组合，以解决各种工作条件下最可行的选择。利用不同工作流体（R717，R1270，R290和R1234YF）的子临界和超临界有机朗肯循环，以及两种Kalina循环（KCS11和KCS34）分析，并与热力学的第一和第二律的角度分析并与之比较彼此。结果表明，与独立压缩空气储存相比，能源和往返往返效率可以提高1.69-2.67％和1.70-2.69％。具有R290作为工作流体的超临界有机朗朗循环是最佳替代品，其恢复最高量的浪费热量，并将生产能力提高2.47％。

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