Life cycle energy consumption and carbon emissions of advanced adiabatic compressed air energy storage

doi:10.19799/j.cnki.2095-4239.2022.0129

Abstract

Abstract:

Advanced adiabatic compressed air energy storage technology has broad application prospects, as its life-cycle energy consumption and carbon dioxide emission research are of guiding significance for promoting energy storage technology development and policy formulation. A 10-MW advanced adiabatic compressed air energy storage system was the research object; a life cycle assessment model of the compressed air energy storage system was established; a life cycle inventory of each stage was conducted based on the actual unit, national standards, and reference literature; and the life-cycle energy consumption and carbon emissions of the system were analyzed. The research results showed that the life-cycle energy consumption and the life-cycle carbon emissions per kilowatt-hour of electricity generation were 5.65 MJ and 36.73 g, and the life-cycle net energy efficiency was 63.7%, from which energy consumption and carbon emissions accounted for the largest proportions in the operation phase, 99.2% and 90.5%, respectively; the heat storage, compression, and expansion systems accounted for a significantly high proportion of carbon emissions. Sensitivity analysis showed that system operating efficiency, system life, and gas storage time are important factors affecting life-cycle carbon emissions and that life-cycle energy consumption is more sensitive to system operation efficiency.

Key words: compressed air energy, life cycle assessment, environmental impact, carbon emission

CLC Number:

TQ 028.8

Xiaoqian GENG, Yujie XU, Jingjian HUANG, Haoshu LIN, Xuehui ZHANG, Shuang SUN, Haisheng CHEN. Life cycle energy consumption and carbon emissions of advanced adiabatic compressed air energy storage[J]. Energy Storage Science and Technology, 2022, 11(9): 2971-2979.

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材料	压缩子系统	膨胀子系统	管路部分	储热子系统
碳钢/kg	54182	29138	27738	313108
铸铁/kg	17000	17000	—	—
合金钢/kg	5902	5130	—	—
不锈钢/kg	35566	—	14527	—
铝合金/kg	25534	38225	—	—
钛合金/kg	962	456	—	—
铜/kg	4413	3030	—	—
岩棉/kg	—	—	3926	25654
塑料/kg	962	381	—	—
加工电耗/kWh	528511	384989	47593	187508

材料	园区建筑	储气子系统
建筑钢材/kg	44914.90	—
混凝土/m³	719.81	27.80
高合金钢/kg	—	82334.79
氮气/m³	—	—
水/kg	863777.69	—
柴油/kg	3901.00	65001.60
电耗/kWh	—	10703.52
焦炭/kg	—	11856.21

材料种类	回收比例/%	回收能耗/(kWh/t)
钢材	85	600
铸铁	85	560
铜合金	70	390
钛合金	90	600
铝合金	60	976.92

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