Pilot-scale demonstration of advanced adiabatic compressed air energy storage, Part 2: Tests with combined sensible/latent thermal-energy storage

被引：61

作者：

Becattini, V. ^{[1
]}

Geissbuhler, L. ^{[1
]}

Zanganeh, G. ^{[2
]}

Haselbacher, A. ^{[1
]}

Steinfeld, A. ^{[1
]}

机构：

[1] Swiss Fed Inst Technol, Dept Mech & Proc Engn, CH-8092 Zurich, Switzerland

[2] ALACAES SA, CH-6900 Lugano, Switzerland

来源：

JOURNAL OF ENERGY STORAGE | 2018年 / 17卷

基金：

瑞士国家科学基金会;

关键词：

Advanced adiabatic compressed air energy storage; Thermal-energy storage; Packed bed; Pilot plant; Simulation; Phase-change material; PHASE-CHANGE MATERIALS; ALUMINUM-ALLOYS; HEAT; PERFORMANCE; SYSTEM; PLANTS; ROCKS;

D O I：

10.1016/j.est.2018.02.003

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

080707 [能源环境工程]; 082001 [油气井工程];

摘要：

Experimental and numerical results from the world's first pilot-scale advanced adiabatic compressed air energy storage plant with combined sensible/latent thermal-energy storage are presented. The combined thermal-energy storage was composed of sensible and latent units with maximum capacities of 11.6 MWh(th) and 171.5 kWh(th), respectively. The latent thermal-energy storage consisted of a steel tank with 296 stainless-steel tubes encapsulating an Al-Cu-Si alloy as phase-change material. The combined thermal-energy storage was investigated using four charging/discharging cycles with durations of about 3 h each and air inflow temperatures of up to 566 degrees C. The experimental results showed that the latent thermal-energy storage reduced the drop in the air outflow temperature during discharging. Minor leaks of the phase-change material were traced to the welding seams in the encapsulation as well as to holes required to insert resistance temperature detectors. Analysis of the leaked phase-change material revealed degradation and/or phase separation, which were attributed to the initial off-eutectic composition of and impurities in the phase-change material and resulted in a reduced heat of fusion. Simulations predicted the performance of the combined thermal-energy storage with good overall accuracy. Discrepancies were put down to changes in the thermophysical properties. (C) 2018 The Authors. Published by Elsevier Ltd.

引用

页码：140 / 152

页数：13

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