化工学报 ›› 2020, Vol. 71 ›› Issue (S1): 23-30.DOI: 10.11949/0438-1157.20191131
收稿日期:
2019-10-07
修回日期:
2019-11-08
出版日期:
2020-04-25
发布日期:
2020-04-25
通讯作者:
张小松
作者简介:
王晨(1995—),男,博士研究生,基金资助:
Chen WANG1(),Xiaohui SHE2,Xiaosong ZHANG1()
Received:
2019-10-07
Revised:
2019-11-08
Online:
2020-04-25
Published:
2020-04-25
Contact:
Xiaosong ZHANG
摘要:
针对现今液态空气储能(LAES)研究中普遍存在忽略空气净化过程能耗而使LAES系统能效被高估的问题,提出了一种含空气净化过程的LAES系统。该系统包含空气液化过程、液态空气释能过程和TSA纯化过程,通过全流程的仿真模拟验证系统可行性,并对其进行热力学分析。结果显示:提高液态空气释能压力、空气透平进口温度和储热油使用比例,可以有效提升系统的热力学性能;储存的压缩热仍有约36%未被完全使用,若将其全部回收利用,全系统效率可达0.623;该含空气纯化过程的LAES系统储电效率为0.471,比基线LAES系统低6.8%。
中图分类号:
王晨, 折晓会, 张小松. 含空气净化过程的液态空气储能热力学研究[J]. 化工学报, 2020, 71(S1): 23-30.
Chen WANG, Xiaohui SHE, Xiaosong ZHANG. Thermodynamic study of liquid air energy storage with air purification unit[J]. CIESC Journal, 2020, 71(S1): 23-30.
参数 | 数值 |
---|---|
加压压力P c | 9×106 Pa |
热油初始温度T 17 | 293 K |
丙烷初始温度T 34 | 214 K |
甲醇初始温度T 36 | 293 K |
液态空气温度T 13 | 78.54 K |
液态空气压力P 13 | 1×105 Pa |
释能压力P d | 1.2×107 Pa |
透平进口温度P 41 | 458.5 K |
透平出口最终压力P 46 | 1×105 Pa |
吸附温度 | 298 K |
吸附压力 | 5.8×105 Pa |
脱附压力 | 1×105 Pa |
热吹温度P 47 | 443 K |
冷吹温度P 47 ’ | 296 K |
压缩机等熵效率 | 0.89 |
透平等熵效率 | 0.9 |
制冷膨胀机等熵效率 | 0.8 |
低温泵效率 | 0.7 |
表1 LAES系统各工况点状态参数
Table 1 Simulation parameters of proposed LAES system
参数 | 数值 |
---|---|
加压压力P c | 9×106 Pa |
热油初始温度T 17 | 293 K |
丙烷初始温度T 34 | 214 K |
甲醇初始温度T 36 | 293 K |
液态空气温度T 13 | 78.54 K |
液态空气压力P 13 | 1×105 Pa |
释能压力P d | 1.2×107 Pa |
透平进口温度P 41 | 458.5 K |
透平出口最终压力P 46 | 1×105 Pa |
吸附温度 | 298 K |
吸附压力 | 5.8×105 Pa |
脱附压力 | 1×105 Pa |
热吹温度P 47 | 443 K |
冷吹温度P 47 ’ | 296 K |
压缩机等熵效率 | 0.89 |
透平等熵效率 | 0.9 |
制冷膨胀机等熵效率 | 0.8 |
低温泵效率 | 0.7 |
工况点 | 流量/(kg/s) | 温度/K | 压力×10-5 /Pa | 介质 |
---|---|---|---|---|
1 | 129.74 | 293.00 | 1.00 | 空气 |
2 | 200.00 | 506.79 | 5.80 | 空气 |
3 | 200.00 | 309.00 | 5.80 | 空气 |
4 | 200.00 | 298.00 | 5.80 | 空气 |
5 | 199.84 | 298.00 | 5.80 | 空气 |
6 | 199.84 | 446.19 | 20.85 | 空气 |
7 | 199.84 | 309.00 | 20.85 | 空气 |
8 | 199.84 | 490.20 | 90.00 | 空气 |
9 | 199.84 | 309.00 | 90.00 | 空气 |
10 | 199.84 | 221.38 | 90.00 | 空气 |
11 | 199.84 | 123.80 | 90.00 | 空气 |
12 | 199.84 | 78.74 | 1.00 | 空气 |
13 | 129.74 | 78.54 | 1.00 | 空气 |
14 | 70.10 | 79.24 | 1.00 | 空气 |
15 | 70.10 | 216.90 | 1.00 | 空气 |
16 | 70.10 | 293.00 | 1.00 | 空气 |
17 | 380.00 | 293.00 | 1.00 | 储热油 |
18 | 129.20 | 293.00 | 1.00 | 储热油 |
19 | 129.20 | 479.90 | 1.00 | 储热油 |
20 | 125.40 | 293.00 | 1.00 | 储热油 |
21 | 125.40 | 434.47 | 1.00 | 储热油 |
22 | 125.40 | 293.00 | 1.00 | 储热油 |
23 | 125.40 | 481.61 | 1.00 | 储热油 |
24 | 380.00 | 465.85 | 1.00 | 储热油 |
25 | 243.20 | 465.85 | 1.00 | 储热油 |
26 | 86.82 | 465.85 | 1.00 | 储热油 |
27 | 86.82 | 293.87 | 1.00 | 储热油 |
28 | 79.04 | 465.85 | 1.00 | 储热油 |
29 | 79.04 | 309.63 | 1.00 | 储热油 |
30 | 77.34 | 465.85 | 1.00 | 储热油 |
31 | 77.34 | 312.04 | 1.00 | 储热油 |
32 | 243.20 | 304.86 | 1.00 | 储热油 |
33 | 120.00 | 87.20 | 1.00 | 丙烷 |
34 | 120.00 | 214.00 | 1.00 | 丙烷 |
35 | 55.00 | 215.00 | 1.00 | 甲醇 |
36 | 55.00 | 293.00 | 1.00 | 甲醇 |
37 | 129.74 | 78.74 | 1.00 | 空气 |
38 | 129.74 | 86.11 | 120.00 | 空气 |
39 | 129.74 | 206.86 | 120.00 | 空气 |
40 | 129.74 | 290.42 | 120.00 | 空气 |
41 | 129.74 | 458.50 | 120.00 | 空气 |
42 | 129.74 | 304.51 | 24.33 | 空气 |
43 | 129.74 | 458.50 | 24.33 | 空气 |
44 | 129.74 | 306.77 | 4.93 | 空气 |
45 | 129.74 | 458.50 | 4.93 | 空气 |
46 | 129.74 | 307.53 | 1.00 | 空气 |
表2 LAES系统各工况点状态参数
Table 2 Working fluid parameters in LAES system
工况点 | 流量/(kg/s) | 温度/K | 压力×10-5 /Pa | 介质 |
---|---|---|---|---|
1 | 129.74 | 293.00 | 1.00 | 空气 |
2 | 200.00 | 506.79 | 5.80 | 空气 |
3 | 200.00 | 309.00 | 5.80 | 空气 |
4 | 200.00 | 298.00 | 5.80 | 空气 |
5 | 199.84 | 298.00 | 5.80 | 空气 |
6 | 199.84 | 446.19 | 20.85 | 空气 |
7 | 199.84 | 309.00 | 20.85 | 空气 |
8 | 199.84 | 490.20 | 90.00 | 空气 |
9 | 199.84 | 309.00 | 90.00 | 空气 |
10 | 199.84 | 221.38 | 90.00 | 空气 |
11 | 199.84 | 123.80 | 90.00 | 空气 |
12 | 199.84 | 78.74 | 1.00 | 空气 |
13 | 129.74 | 78.54 | 1.00 | 空气 |
14 | 70.10 | 79.24 | 1.00 | 空气 |
15 | 70.10 | 216.90 | 1.00 | 空气 |
16 | 70.10 | 293.00 | 1.00 | 空气 |
17 | 380.00 | 293.00 | 1.00 | 储热油 |
18 | 129.20 | 293.00 | 1.00 | 储热油 |
19 | 129.20 | 479.90 | 1.00 | 储热油 |
20 | 125.40 | 293.00 | 1.00 | 储热油 |
21 | 125.40 | 434.47 | 1.00 | 储热油 |
22 | 125.40 | 293.00 | 1.00 | 储热油 |
23 | 125.40 | 481.61 | 1.00 | 储热油 |
24 | 380.00 | 465.85 | 1.00 | 储热油 |
25 | 243.20 | 465.85 | 1.00 | 储热油 |
26 | 86.82 | 465.85 | 1.00 | 储热油 |
27 | 86.82 | 293.87 | 1.00 | 储热油 |
28 | 79.04 | 465.85 | 1.00 | 储热油 |
29 | 79.04 | 309.63 | 1.00 | 储热油 |
30 | 77.34 | 465.85 | 1.00 | 储热油 |
31 | 77.34 | 312.04 | 1.00 | 储热油 |
32 | 243.20 | 304.86 | 1.00 | 储热油 |
33 | 120.00 | 87.20 | 1.00 | 丙烷 |
34 | 120.00 | 214.00 | 1.00 | 丙烷 |
35 | 55.00 | 215.00 | 1.00 | 甲醇 |
36 | 55.00 | 293.00 | 1.00 | 甲醇 |
37 | 129.74 | 78.74 | 1.00 | 空气 |
38 | 129.74 | 86.11 | 120.00 | 空气 |
39 | 129.74 | 206.86 | 120.00 | 空气 |
40 | 129.74 | 290.42 | 120.00 | 空气 |
41 | 129.74 | 458.50 | 120.00 | 空气 |
42 | 129.74 | 304.51 | 24.33 | 空气 |
43 | 129.74 | 458.50 | 24.33 | 空气 |
44 | 129.74 | 306.77 | 4.93 | 空气 |
45 | 129.74 | 458.50 | 4.93 | 空气 |
46 | 129.74 | 307.53 | 1.00 | 空气 |
参数 | 数值 |
---|---|
压缩机耗功 | 109243.864 kW |
制冷膨胀机输出功率 | 4311.376 kW |
空气液化过程效率 | 0.814 |
低温泵耗功 | 2527.568 kW |
空气透平输出功率 | 59068.701 kW |
液态空气释能过程效率 | 0.873 |
液体收率 | 0.65 |
基线系统储电效率 | 0.539 |
表3 LAES系统模拟结果参数
Table 3 Summary of simulation results
参数 | 数值 |
---|---|
压缩机耗功 | 109243.864 kW |
制冷膨胀机输出功率 | 4311.376 kW |
空气液化过程效率 | 0.814 |
低温泵耗功 | 2527.568 kW |
空气透平输出功率 | 59068.701 kW |
液态空气释能过程效率 | 0.873 |
液体收率 | 0.65 |
基线系统储电效率 | 0.539 |
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