超临界压缩空气储能系统蓄冷换热器优化设计

doi:10.19799/j.cnki.2095-4239.2021.0110

储能科学与技术 ›› 2021, Vol. 10 ›› Issue (4): 1374-1379.doi: 10.19799/j.cnki.2095-4239.2021.0110

超临界压缩空气储能系统蓄冷换热器优化设计

吴玉庭(), 宋阁阁, 张灿灿(), 寇真峰, 鹿院卫

北京工业大学环境与生命学部，传热强化与过程节能教育部重点实验室及传热与能源利用北京市重点实验室，北京 100124

收稿日期:2021-03-16 修回日期:2021-03-24 出版日期:2021-07-05 发布日期:2021-06-25
通讯作者: 张灿灿 E-mail:wuyuting@bjut.edu.cn;zcc@bjut.edu.cn
作者简介:吴玉庭（1970—），男，博士生导师，主要研究方向为高温高热流传热蓄热、低品位能源高效热功转换，先进制冷技术，E-mail：wuyuting@bjut.edu.cn。
基金资助:
国家重点研发计划(2017YFB0903603);国家自然科学基金(51906003┫项目)

Optimal design of packed bed cold storage heat exchangers with solid NaClparticles in supercritical compressed air energy storage system

Yuting WU(), Gege SONG, Cancan ZHANG(), Zhenfeng KOU, Yuanwei LU

MOE Key Laboratory of Enhanced Heat Transfer and Energy Conservation, Beijing Key Laboratory of Heat Transfer and Energy Conversion, Beijing University of Technology, Beijing 100124, China.

Received:2021-03-16 Revised:2021-03-24 Online:2021-07-05 Published:2021-06-25
Contact: Cancan ZHANG E-mail:wuyuting@bjut.edu.cn;zcc@bjut.edu.cn

摘要/Abstract

摘要：

蓄冷换热器是超临界压缩空气储能系统的一个重要组成部分。为探究蓄冷换热器中设计尺寸参数对蓄冷装置加工和蓄冷性能的影响，以固体氯化钠颗粒作为蓄冷材料设计了一种超临界压缩空气填充床式蓄冷换热器。根据系统的要求参数和压力容器尺寸的约束方程，以罐体质量和加工成本最小、冷量损失最小和蓄冷效率最高为原则对10 MW蓄冷换热器的整体尺寸进行优化。对比发现随着换热器高度的增加，罐体质量和加工成本逐渐增加；对0.5～10 MW不同蓄冷功率下的蓄冷装置蓄冷效率进行对比分析，发现在长径比不变时，蓄冷效率随功率的增大从94.65%到96.08%逐渐提高，冷损失量也同步增加。最后得到在14组的优化数据中，最优参数下，蓄冷换热器冷损失量较低，蓄冷效率为96.08%，同时加工成本也在可接受范围内。

关键词: 超临界压缩空气储能, 蓄冷换热器, 高压填充床, 优化设计

Abstract:

The cold storage heat exchanger is an important part of a supercritical compressed air energy storage system. In order to explore the influence of design parameters on the processing cost and performance of the cold storage device, a supercritical packed bed cold storage heat exchanger is designed with solid sodium chloride as the cold storage material. According to the required parameters of the system and the constraint equation of the size of the pressure vessel, the 10 MW cold storage heat exchanger is optimized in order to minimize the tank mass and processing costs, minimize the cooling loss, and increase the cold storage efficiency. It is found that with increasing height of the heat exchanger, the tank mass and cost rise gradually. Analyzing the efficiency of the cold storage device under different powers ranging from 0.5MW to 10 MW, we determined that the cold storage efficiency increases gradually from 94.65% to 96.08% with increasing power when the aspect ratio is constant; the cold loss also increases with the power. Finally, in fourteen sets of optimized data, the cold loss of the heat exchanger is relatively low under optimal parameters, with the cold storage efficiency being 96.08%. The processing cost also falls within the acceptable range.

Key words: supercritical compressed-air energy storage(SC-CAES), heat exchanger with cold storage, high pressure packed bed, optimal design

中图分类号:

TK 02

吴玉庭, 宋阁阁, 张灿灿, 寇真峰, 鹿院卫. 超临界压缩空气储能系统蓄冷换热器优化设计[J]. 储能科学与技术, 2021, 10(4): 1374-1379.

Yuting WU, Gege SONG, Cancan ZHANG, Zhenfeng KOU, Yuanwei LU. Optimal design of packed bed cold storage heat exchangers with solid NaClparticles in supercritical compressed air energy storage system[J]. Energy Storage Science and Technology, 2021, 10(4): 1374-1379.

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节点	流量/kg·s^-1	温度/K	压力/MPa	密度/kg·m^-3	焓/kJ·kg^-1	定压比热容/kJ·(kg·K)^-1	动力黏度×10⁵/Pa·s	导热系数/mW·(m·K)^-1	Pr
R1	42.93	293.15	10	120.26	272.09	1.17	2.05	30.87	0.78
R2	42.82	119.4	10	709.65	-40.78	2.09	6.8	92.97	1.54
S4	34	107.76	7.05	756.93	-65.412	2.04	8.44	106.56	1.61
S5	33.91	291.12	7.04	85.623	275.63	1.13	1.96	28.8	0.77
S1	8.93	102.91	0.8	211.8	-58.7	—	—	—	—
S2	8.91	291.15	0.8	9.60	289.73	1.02	1.83	25.61	0.73

序号	D/mm	H/mm	δ₂/mm	δ₁/mm	h/mm	M罐体质量/kg	成本/万元
1	3300	23205	98.04	94.04	825	184515.49	311.83
2	3350	22499	99	95	837.5	184364.13	311.58
3	3400	21824	101	97	850	184208.18	311.31
4	3450	21177	102.31	98.31	862.5	184047.58	311.04
5	3500	20558	103.74	99.74	875	183882.26	310.76
6	3550	19964	105.16	101.16	887.5	183712.14	310.47
7	3600	19395	106.59	102.59	900	183537.17	310.18
8	3650	18849	108.01	104.01	912.5	183357.26	309.87
9	3700	18325	109.44	105.44	925	183172.36	309.56
10	3750	17821	110.86	106.86	937.5	182982.4	309.24
11	3800	17336	112.29	108.29	950	182787.3	308.91
12	3850	16870	113.71	109.71	962.5	182586.99	308.57
13	3900	16422	115.14	111.14	975	182381.42	308.22
14	3950	15990	116.56	112.56	987.5	182170.52	307.87

序号	H/mm	H/D	δ₂/mm	δ₁/mm	冷量损失/kJ	蓄冷效率/%
1	23205	7.0	98.04	94.04	1530841.62	95.75
2	22499	6.7	99	95	1522865.21	95.77
3	21824	6.4	101	97	1514719.86	95.79
4	21177	6.1	102.31	98.31	1506400.26	95.82
5	20558	5.9	103.74	99.74	1497901.53	95.84
6	19964	5.6	105.16	101.16	1489219.19	95.86
7	19395	5.4	106.59	102.59	1480349.15	95.89
8	18849	5.2	108.01	104.01	1471287.74	95.91
9	18325	5.0	109.44	105.44	1462031. 7	95.94
10	17821	4.8	110.86	106.86	1452578.17	95.97
11	17336	4.6	112.29	108.29	1442924.74	95.99
12	16870	4.4	113.71	109.71	1433069.4	96.02
13	16422	4.2	115.14	111.14	1423010.56	96.05
14	15990	4.0	116.56	112.56	1412747.1	96.08

功率/MW	D/mm	H/mm	长径比β	δ₁/mm	Q_loss/kJ	蓄冷效率/%
0.5	1500	6037	4	42.75	96157.57	94.65
1	1850	7581	4	52.72	173622.78	95.18
2	2350	9159	4	67	319306.65	95.57
3	2650	10728	4	75.52	463717.94	95.71
4	2900	11900	4	82.64	604669.38	95.80
5	3150	12566	4	89.77	739113.82	95.89
6	3350	13422	4	95.46	881753.06	95.92
7	3550	13902	4	101.16	1011478.44	95.99
8	3700	14604	4	105.44	1145009.65	96.02
9	3850	15152	4	109.71	1275302.73	96.06
10	3950	15990	4	112.56	1412747.1	96.08

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超临界压缩空气储能系统蓄冷换热器优化设计

Optimal design of packed bed cold storage heat exchangers with solid NaClparticles in supercritical compressed air energy storage system

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