液化天然气绕管式换热器壳侧混合工质流动及传热特性

doi:10.16085/j.issn.1000-6613.2022-1934

化工进展 ›› 2023, Vol. 42 ›› Issue (9): 4496-4503.DOI: 10.16085/j.issn.1000-6613.2022-1934

液化天然气绕管式换热器壳侧混合工质流动及传热特性

陈林¹^,²(), 徐培渊¹^,³, 张晓慧⁴, 陈杰⁴(), 徐振军⁵, 陈嘉祥¹, 密晓光⁴, 冯永昌¹, 梅德清³

^1.中国科学院工程热物理研究所，北京 100190
^2.中国科学院大学，北京 100049
^3.江苏大学汽车与交通工程学院，江苏镇江 212016
^4.中海石油气电集团技术研发中心，北京 100028
^5.青岛农业大学建筑工程学院，山东青岛 266109

收稿日期:2022-10-18 修回日期:2022-12-26 出版日期:2023-09-15 发布日期:2023-09-28
通讯作者: 陈杰
作者简介:陈林（1987—），男，博士，研究员，博士生导师，研究方向为超临界流体及LNG装备。E-mail：chenlin2018@iet.cn。
基金资助:
中海石油气电集团有限责任公司研究项目(GP-YF-CB-2020-015/016);中国科学院前沿科学重点研究计划(ZDBS-LY-JSC018);国家自然科学基金(52106033);中国科学院人才启动经费项目

Investigation on the LNG mixed refrigerant flow and heat transfer characteristics in coil-wounded heat exchanger (CWHE) system

CHEN Lin¹^,²(), XU Peiyuan¹^,³, ZHANG Xiaohui⁴, CHEN Jie⁴(), XU Zhenjun⁵, CHEN Jiaxiang¹, MI Xiaoguang⁴, FENG Yongchang¹, MEI Deqing³

^1.Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China
^2.University of Chinese Academy of Sciences, Beijing 100049, China
^3.School of Automotive and Traffic Engineering, Jiangsu University, Zhenjiang 212016, Jiangsu, China
^4.R&D Center, CNOOC Gas & Power Group, Beijing 100028, China
^5.College of Civil Engineering & Architecture, Qingdao Agricultural University, Qingdao 266109, Shandong, China

Received:2022-10-18 Revised:2022-12-26 Online:2023-09-15 Published:2023-09-28
Contact: CHEN Jie

摘要/Abstract

摘要：

绕管式换热器壳侧的流动及传热特性对大型液化天然气/浮式液化天然气装备设计和优化具有重要意义。本文建立了两相流动沸腾数值模型以预测壳侧流型、压降及其传热效果。通过耦合VOF模型、相变传质模型和表面张力模型，探究了不同质流密度、干度等因素对壳侧流动传热特性的影响，并通过绕管式换热器流动换热实验平台进行了实验验证，证明了模拟所得规律与实验结果有良好的吻合性。结果表明：压降随干度的增加而增加；传热系数随干度的增加有所减小；壳侧制冷剂在不同干度下主要呈现柱状流、滴状流、气状流等流型。本研究为设计和优化绕管式换热器提供了理论基础。

关键词: 数值模型, 绕管式换热器, 流动压降, 沸腾传热

Abstract:

The flow and heat transfer characteristics on the shell side of the wound tube heat exchanger are of great significance to the design and optimization of LNG/FLNG systems. To solve this problem, a two-phase flow boiling numerical model was established to predict the pressure drop and heat transfer coefficient in the shell side. The VOF model, the phase-change mass transfer model and the surface tension model were added to study the influence of different factors such as mass flow density and dryness on the flow and heat transfer characteristics at the shell side, and the experimental verification was carried out through the flow and heat transfer experimental platform of the wound tube heat exchanger, which proved that the simulation rules were in good agreement with the experimental results. The results showed that the pressure drop increased with the increase of dryness; the heat transfer coefficient decreased with the increase of dryness; the shell side refrigerant mainly presented columnar flow, droplet flow, gaseous flow and other flow patterns under different dryness. This study provideed a theoretical basis for the design and optimization of the coiled tube heat exchanger.

Key words: numerical simulation, coil-wound heat exchanger, flow and pressure drop, boiling heat transfer

中图分类号:

TQ021.4

陈林, 徐培渊, 张晓慧, 陈杰, 徐振军, 陈嘉祥, 密晓光, 冯永昌, 梅德清. 液化天然气绕管式换热器壳侧混合工质流动及传热特性[J]. 化工进展, 2023, 42(9): 4496-4503.

CHEN Lin, XU Peiyuan, ZHANG Xiaohui, CHEN Jie, XU Zhenjun, CHEN Jiaxiang, MI Xiaoguang, FENG Yongchang, MEI Deqing. Investigation on the LNG mixed refrigerant flow and heat transfer characteristics in coil-wounded heat exchanger (CWHE) system[J]. Chemical Industry and Engineering Progress, 2023, 42(9): 4496-4503.

图/表 9

图1 LNG/LFNG绕管式换热器示意图[11]

图2 绕管结构示意图

图3 绕管式换热器壳程实验原理图

图4 绕管式换热器测试样件示意图

表1 实验参数测量精度

项目	质量流量	压力	压差	温度
仪表	科氏质量流量计	压力变送器	差压变送器	T热电偶
品牌型号	EMERSON	EMERSON	EMERSON	OMEGA
设定量程	0~1200kg/h	0~3MPa	0~5kPa 0~50kPa	-200~100℃
精度	±0.1%	±0.05%FS	±0.05%FS	±0.1℃

图5 干度及质流密度对壳侧压降的影响

图6 基于实验传热系数的模型验证

图7 干度及质流密度对壳侧传热系数的影响

图8 实验观测流型与数值模拟流型对比图

参考文献 25

1	李丰志, 于佳文, 鹿来运, 等. LNG绕管式换热器管侧流动与传热实验台设计及验证[J]. 哈尔滨工业大学学报, 2017, 49(2): 98-102.
	LI Fengzhi, YU Jiawen, LU Laiyun, et al. Design and verification for tube-side flow and heat transfer test-rig of coil-wound LNG heat exchangers[J]. Journal of Harbin Institute of Technology, 2017, 49(2): 98-102.
2	欧阳新萍, 秦洁, 薛林锋, 等. 多股流绕管式换热器的管束排布及传热计算[J]. 化工进展, 2019, 38(S1): 39-45.
	OUYANG Xinping, QIN Jie, XUE Linfeng, et al. Tube bundle arrangements and heat transfer calculations of multi-stream spiral-wound heat exchanger[J]. Chemical Industry and Engineering Progress, 2019, 38(S1): 39-45.
3	LI J R, HU H T, WANG H X. Numerical investigation on flow pattern transformation and heat transfer characteristics of two-phase flow boiling in the shell side of LNG spiral wound heat exchanger[J]. International Journal of Thermal Sciences, 2020, 152: 106289.
4	邱国栋, 蔡伟华, 吴志勇, 等. 绕管换热器两相流冷凝换热及沿程压力降模拟[J]. 煤气与热力, 2015, 35(2): 30-34.
	QIU Guodong, CAI Weihua, WU Zhiyong, et al. Simulation of two-phase flow condensing heat exchange and frictional pressure drop in coil-wound heat exchangers[J]. Gas & Heat, 2015, 35(2): 30-34.
5	吴志勇, 陈杰, 浦晖, 等. LNG绕管式换热器壳侧过热态流动的数值模拟[J]. 煤气与热力, 2014, 34(8): 6-11.
	WU Zhiyong, CHEN Jie, PU Hui, et al. Numerical simulation of superheated flow of refrigerant at shell side of LNG spiral wound heat exchanger[J]. Gas & Heat, 2014, 34(8): 6-11.
6	王斯民, 段旭东, 文键. 直插式垫条型缠绕管式换热器过程强化[J]. 化工进展, 2021, 40(12): 6613-6619.
	WANG Simin, DUAN Xudong, WEN Jian. Comprehensive performance of spiral-winding tube heat exchanger with vertically inserting space bars[J]. Chemical Industry and Engineering Progress, 2021, 40(12): 6613-6619.
7	杨发炜, 张周卫, 周文和. 缠绕管式换热器并管壳程换热数值研究[J]. 石化技术, 2022, 29(5): 96-100.
	YANG Fawei, ZHANG Zhouwei, ZHOU Wenhe. Numerical study on shell side heat transfer of wound tube heat exchanger[J]. Petrochemical Industry Technology, 2022, 29(5): 96-100.
8	HE N, CHEN Y D, YU S R, et al. Effect of winding angles on flow and heat transfer characteristics in the shell side of spiral wound heat exchangers[J]. Thermal Science and Engineering Progress, 2022, 29: 101226.
9	马飞. 螺旋缠绕管换热器传热数值模拟[D]. 郑州: 郑州大学, 2014.
	MA Fei. Numerical simulation of heat transfer of spiral coiledheat exchanger[D]. Zhengzhou: Zhengzhou University, 2014.
10	汪耀龙, 刘莲, 郑文科, 等. 均布器对LNG绕管式换热器壳侧流体的影响[J]. 煤气与热力, 2022, 42(5): 16-22.
	WANG Yaolong, LIU Lian, ZHENG Wenke, et al. Influence of distributor on shell-side fluid of LNG spiral wound heat exchanger[J]. Gas ＆ Heat, 2022, 42(5): 16-22.
11	NEERAAS B O, FREDHEIM A O, AUNAN B. Experimental shell-side heat transfer and pressure drop in gas flow for spiral-wound LNG heat exchanger[J]. International Journal of Heat and Mass Transfer, 2004, 47 (2): 353-361.
12	NEERAAS B O, FREDHEIM A O, AUNAN B. Experimental data and model for heat transfer, in liquid falling film flow on shell side for spiral wound LNG heat exchanger[J]. International Journal of Heat and Mass Transfer, 2004, 47 (14/15/16): 3565-3572.
13	SUN C, LI Y, HAN H, et al. Effect of compound sloshing conditions on pressure drop and heat transfer characteristics for FLNG spiral wound heat exchanger[J]. Applied Thermal Engineering, 2019, 159: 113791.
14	HU H, DING C, DING G, et al. Heat transfer characteristics of two-phase mixed hydrocarbon refrigerants flow boiling in shell side of LNG spiral wound heat exchanger[J]. International Journal of Heat and Mass Transfer, 2019, 131: 611-622.
15	庞晓冬, 杨果成, 陈杰, 等. 丙烷在螺旋折流板管壳式换热器壳侧流动冷凝换热特性的实验研究[J]. 制冷技术, 2016, 36(5): 31-37.
	PANG Xiaodong, YANG Guocheng, CHEN Jie, et al. Experimental investigation of heat transfer characteristics of propane condensation in helical baffle shell-tube heat exchanger[J]. Chinese Journal of Refrigeration Technology, 2016, 36(5): 31-37.
16	ZHU J, SUN C, LI Y, et al. Experiment on adaptability of feed gas flow rate and sea conditions on FLNG spiral wound heat exchanger[J]. International Journal of Heat and Mass Transfer, 2019, 138: 659-666.
17	SUN C, LIU L, WANG S, et al. Visualization experimental and numerical study on multiphase flow characteristics of main cryogenic heat exchanger in offshore liquefied natural gas industry chain[J]. Cryogenics, 2022, 124: 103490.
18	ZHENG W, CAI W, JIANG Y. Distribution performance of gas–liquid mixture in the shell side of spiral-wound heat exchangers[J]. Chinese Journal of Chemical Engineering, 2019, 27 (10): 2284-2292.
19	邱中建, 赵文智, 胡素云, 等. 我国天然气资源潜力及其在未来低碳经济发展中的重要地位[J]. 中国工程科学, 2011, 13(6): 81-87.
	QIU Zhongjian, ZHAO Wenzhi, HU Suyun, et al. The natural gas resource potential and its important status in the coming low-carbon economy[J]. Engineering Sciences, 2011, 13(6): 81-87.
20	丁超. LNG绕管式换热器壳侧两相流动与传热特性实验研究[D]. 上海: 上海交通大学, 2018.
	DING Chao. Experimental investigations on two-phase flow and heat transfer characteristics in shell side of LNG spiral-wound heat exchanger[D]. Shanghai: Shanghai Jiao Tong University, 2018.
21	董龙飞, 刘坤. LNG绕管式换热器壳程两相降膜换热的数值模拟[J]. 石油化工高等学校学报, 2020, 33(5): 80-85.
	DONG Longfei, LIU Kun. Numerical simulation of two-phase falling film heat transfer at shell side of spiral-wound LNG heat exchanger[J]. Journal of Petrochemical Universities, 2020, 33(5): 80-85.
22	WEICKERT T, GRAB T H, STORCH T H, et al. Investigations regarding the wetting behavior of propane on the surfaces of geothermal heat pipes[C]//The 8th Minsk International Seminar Heat Pipes, Heat Pumps, Refrigerators, power Sources. Minsk, 2011.
23	陈永东, 吴晓红, 周兵. LNG缠绕管式换热器试验研究中的热物性计算方法[J]. 天然气工业, 2011, 31(6): 92-97.
	CHEN Yongdong, WU Xiaohong, ZHOU Bing. Calculation methods of thermo-physical properties for experimental research on LNG spiral-wound heat exchangers[J]. Natural Gas Industry, 2011, 31(6): 92-97.
24	FREDHEIM A O. Thermal design of coil-wound LNG heat exchanger. Shell-side heat transfer and pressure drop[D]. Norway: Trondheim University, 1994.
25	KUNZ O, WAGNER W. The GERG2004 Wide-range equation of state of natural gases and other mixtures[J]. Journal of Chemical and Engineering Data, 2007, 57(11): 3032-3091.

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液化天然气绕管式换热器壳侧混合工质流动及传热特性

Investigation on the LNG mixed refrigerant flow and heat transfer characteristics in coil-wounded heat exchanger (CWHE) system

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