槽式太阳能耦合压缩空气储能系统动态特性研究

doi:10.3976/j.issn.1002-4026.20240133

Abstract

Abstract:

Under the national dual-carbon policy and energy transition，the need for coordinated development between compressed air energy storage （CAES） technology and renewable energy has grown significantly. A solar auxiliary reheating compressed air energy storage （SAR-CAES） system is proposed. The system integrates a parabolic trough solar collector with an advanced adiabatic CAES system for achieving energy release. A mathematical model of the trough solar collector and a three-stage expansion advanced adiabatic compressed air energy storage system were established. Using the discretization algorithm in Matlab，the models were coupled to analyze the impact of months and latitudes on key system parameters. Results show that the resultant dynamic model satisfies the first and second laws of thermodynamics. After auxiliary heating，the heat load of the auxiliary heat exchanger increased clearly. Medium regenerator and Low regenerator barely participated in heat exchange，but generated considerable exergic loss. The efficiency of compressed air energy storage clearly improved after auxiliary heating，reaching its peak during the summer solstice at the Tropic of Cancer. The effective utilization efficiency of the solar energy in this system is higher than that of a solar-driven ammonia-water regenerative Rankine cycle system，with a maximum efficiency during the winter solstice—67.86% higher than that of the ammonia-water power cycle.

Key words: compressed air energy storage, trough solar energy, auxiliary heating process, dynamic characteristic

CLC Number:

TK02

QIN Haoxuan, CHEN Wei. Dynamic characteristics of a trough solar energy-coupled compressed air energy storage system[J].Shandong Science, 2025, 38(5): 64-78.

Figures/Tables 19

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地点	日期	经纬度	可视度/km	E_bh计算值/（MJ·m^-2·h^-1）	E_bh测量值/（MJ·m^-2·h^-1）	误差
北京	2024-06-15	116.3°E 39.9°N	15	1.48	1.62	8.64%
北京	2024-07-15	116.3°E 39.9°N	20	1.43	1.46	2.05%
上海	2024-04-15	121.5°E 31.4°N	18	1.43	1.34	6.72%
上海	2024-07-15	121.5°E 31.4°N	15	1.52	1.58	3.80%
青岛	2024-06-15	120.0°E 36.0°N	18	1.55	1.68	7.74%
青岛	2024-07-15	120.0°E 36.0°N	18	1.51	1.48	2.03%
广州	2024-07-15	113.3°E 23.1°N	23	1.50	1.40	7.14%
广州	2024-09-15	113.3°E 23.1°N	12	1.49	1.47	1.36%
乌鲁木齐	2024-06-15	87.4°E 43.5°N	30	2.21	2.12	4.25%
乌鲁木齐	2024-07-15	87.4°E 43.5°N	30	2.23	2.43	8.23%

部件	设计状况参数	数值
AT	体积V/m³	9 313
	初始压力p/MPa	10
	初始温度T/K	388.4
	终点压力p/MPa	3.2
HR	空气质量流量q_m，air/（kg·s^-1）	22.03
	热油质量流量q_m，oil/（kg·s^-1）	9.134
MR	空气质量流量q_m，air/（kg·s^-1）	22.03
	热油质量流量q_m，oil/（kg·s^-1）	0.457 0
LR	空气质量流量q_m，air/（kg·s^-1）	22.03
	热油质量流量q_m，oil/（kg·s^-1）	0
HS	空气质量流量q_m，air/（kg·s^-1）	22.03
	热油质量流量q_m，oil/（kg·s^-1）	10.01
MS	空气质量流量q_m，air/（kg·s^-1）	22.03
	热油质量流量q_m，oil/（kg·s^-1）	9.908
LS	空气质量流量q_m，air/（kg·s^-1）	22.03
	热油质量流量q_m，oil/（kg·s^-1）	9.875
HT	空气质量流量q_m，air/（kg·s^-1）	22.03
	汽轮机参数G₀	1.646×10^-4
	压比e₀	3.163
	绝热效率h₀	0.9
MT	空气质量流量q_m，air/（kg·s^-1）	22.03
	汽轮机参数G₀	5.202×10^-4
	压比e₀	3.163
	绝热效率h₀	0.9
LT	空气质量流量q_m，air/（kg·s^-1）	22.03
	汽轮机参数G₀	1.644×10^-4
	压比e₀	3.163
	绝热效率h₀	0.9

状态点	温度/K	压力/MPa	比体积/（m³·kg^-1）	质量流量/（kg·s^-1）	比焓/（kJ·kg^-1）	比熵/（kJ·kg^-1·K^-1）
1	388.4	10.00	0.011 46	22.03	503.1	2.770
2	388.4	10.00	0.011 46	22.03	503.1	2.770
2'	388.4	3.200	0.035 06	22.03	509.7	3.119
3	425.0	3.200	0.038 45	22.03	547.7	3.212
4	571.7	3.200	0.051 89	22.03	701.0	3.522
5	424.2	1.012	0.120 6	22.03	548.9	3.547
6	425.0	1.012	0.120 8	22.03	549.7	3.549
7	571.7	1.012	0.162 7	22.03	701.4	3.855
8	425.0	0.320 3	0.381 2	22.03	550.3	3.881
9	425.0	0.320 3	0.381 2	22.03	550.3	3.881
10	571.7	0.320 3	0.512 9	22.03	701.5	4.186
11	425.3	0.101 3	1.205	22.03	550.8	4.213
12	433.3	0.101 3	0.001 097	9.134	996.5	0.859 6
13	393.4	0.101 3	0.001 066	9.134	904.8	0.637 7
14	433.3	0.101 3	0.001 097	0.457 1	996.5	0.859 6
15	416.4	0.101 3	0.001 084	0.457 1	957.7	0.768 2
16	433.3	0.101 3	0.001 097	0.000	996.5	0.859 6
17	416.8	0.101 3	0.001 084	0.000	958.5	0.770 2
18	576.7	0.101 3	0.001 220	10.01	1 326	1.517
19	430.0	0.101 3	0.001 125	10.01	989.0	0.842 2
20	576.7	0.101 3	0.001 220	9.908	1 326	1.517
21	430.0	0.101 3	0.001 125	9.908	989.0	0.842 2
22	576.7	0.101 3	0.001 220	9.875	1 326	1.517 2
23	430.0	0.101 3	0.001 125	9.875	989.0	0.842 2

组件	能量	数值/kW
AT	输入功，W_AT	0.000
HT	输出功，W_HT	-3 351
MT	输出功，W_MT	-3 328
LT	输出功，W_LT	-3 320
HR	油供热流功，q_HR	837.0
MR	油供热流功，q_MR	17.73
LR	油供热流功，q_LR	0.000
HS	油供热流功，q_HS	3 376
MS	油供热流功，q_MS	3 342
LS	油供热流功，q_LS	3 331
	焓差，ΔH_air	904.3
释能过程总能量变化		1×10^-2

组件	可用能	数值/kW
AT	㶲输出，${{E}_{x，out，}}_{AT}$	7 108
AT	㶲损失，E_{x，loss，AT}	0.000
HT	㶲输出，E_x，out，HT	11 202
	㶲损失，E_{x，loss，HT}	163.7
	输出功，P_HT	3 351
MT	㶲输出，E_x，out，MT	13 365
	㶲损失，E_{x，loss，MT}	169.6
	输出功，P_MT	3 328
LT	㶲输出，E_x，out，LT	15 533
	㶲损失，${{{E}_{x，loss}}_{，}}_{LT}$	171.8
	输出功，P_LT	3 320
HR	㶲损失，E_{x，loss，HR}	9.784
MR	㶲损失，E_{x，loss，MR}	249.4
LR	㶲损失，E_{x，loss，LR}	249.4
HS	㶲损失，E_{x，loss，HS}	19.68
MS	㶲损失，E_{x，loss，MS}	19.13
LS	㶲损失，E_{x，loss，LS}	18.95
	空气侧输入㶲，ΔE_x，air	6 280
	热油侧输入㶲，ΔE_x，oil	4 791
释能过程总㶲变化		7×10^-12

Dynamic characteristics of a trough solar energy-coupled compressed air energy storage system

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