Numerical simulation of convective heat transfer of microencapsulated phase change material slurry in a circular tube

doi:10.16085/j.issn.1000-6613.2020-1016

Abstract

Abstract:

For the microencapsulated phase change materials slurry (MPCMs) having a large latent heat during the phase change period and having a narrower temperature change range and a higher heat convection coefficient than the single-phase fluid, it had become a new thermal fluid of widespread concern. According to the phase change temperature range obtained by DSC, the rectangular equivalent specific heat model was used to numerical simulate the laminar convective heat transfer performances of MPCMs in a tube under constant heat flux. Combined with the experimental data of MPCMs with 1-bromohexadecane as core material, the numerical simulation results were compared with the experimental results, and the error was analyzed. The heat transfer of MPCMs in a tube was investigated under various concentrations of MPCMs and heat flux. The influence of different parameters on the convective heat transfer was analyzed and the correlation of the convective heat transfer with MPCMs in a tube was obtained. And the inner diameter and the velocity was changed to certify the universality of the correlation of convective heat transfer with MPCMs in a tube. The results show that the simulation results are highly consistent with the prediction formula, and the correlation is universal.

Key words: phase change, computational fluid dynamics,CFD, convection, heat transfer, numerical simulation

摘要：

相变微胶囊悬浮液在相变过程中具有较大的相变潜热，可以减小温度的变化程度，且比单相流体具有更高的对流换热系数，成为广泛关注的新型热工流体。本文针对相变微胶囊悬浮液在等热流边界条件下的管内层流，根据差示扫描量热法所得到的相变温度范围，采用矩形等效比热容模型，进行了数值模拟分析，并结合以溴代十六烷为相变材料的相变微胶囊悬浮液的实验数据，将数值模拟结果与实验结果对比并进行误差分析。又对在不同质量分数、不同热流密度条件下的对流换热进行研究，分析了不同参数对对流换热强度的影响。并通过拟合得到了相变微胶囊悬浮液圆管内对流换热关联式。然后改变管径、流速条件重新模拟验证该关联式的通用性，其结果表明模拟结果与预测公式高度吻合，该关联式的通用性较好。

关键词: 相变, 计算流体力学, 对流, 传热, 数值模拟

CLC Number:

TK124

Jingde ZHAO, Hongxin YE. Numerical simulation of convective heat transfer of microencapsulated phase change material slurry in a circular tube[J]. Chemical Industry and Engineering Progress, 2020, 39(S2): 36-41.

赵敬德, 叶鸿鑫. 相变微胶囊悬浮液圆管内换热特性模拟[J]. 化工进展, 2020, 39(S2): 36-41.

Figures/Tables 8

References 30

1	PASUPATHY A, VELRA J R, SEENIRAJ R V. Phase change material-based building architecture for thermal management in residential and commercial establishments[J]. Renewable and Sustainable Energy Reviews, 2008, 12(1): 39-64.
2	Zalba BELÉN, JOSÉ Ma Marı́n, LUISA F.Cabeza,et al. Review on thermal energy storage with phase change: materials, heat transfer analysis and applications[J]. Applied Thermal Engineering, 2003, 23(3): 251-283.
3	ZHAO C Y, WU Z G.Heat transfer enhancement of high temperature thermal energy storage using metal foams and expanded graphite[J]. Solar Energy Materials & Solar Cells, 2011, 95(2): 636-643.
4	ZHAO CY, LU W, TIAN Y.Heat transfer enhancement for thermal energy storage using metal foams embedded within phase change materials (PCMs)[J]. Solar Energy, 2010, 84(8): 1402-1412.
5	丁理峰, 叶宏.相变材料和隔热材料在不同地区建筑中应用效果之比较分析[J]. 太阳能学报, 2011, 32(4): 508-516.
	DING Lifeng, YE Hong. Comparative analysis of the effects of PCMs and insulation materials on energy saving in buildings located in five typical cities[J]. Acta Energiae Solaris Sinica, 2011, 32(4): 508-516.
6	TOMIZAWA Y, SASAKI K, KURODA A, et al. Experimental and numerical study on phase change material (PCM) for thermal management of mobile devices[J]. Applied Thermal Engineering, 2016, 98: 320-329.
7	周玉帅. 微胶囊蓄冷空调系统研究[D]: 上海: 东华大学, 2012.
	ZHOU Yushuai. Studied on cool-storage air-conditioning system of microencapsulated phase change materials slurry[D]: Shanghai: Donghua University, 2012.
8	HUANG MJ, EAMES PC, MCCORMACK S, et al. Microencapsulated phase change slurries for thermal energy storage in a residential solar energy system[J]. Renewable Energy, 2011, 36(11): 2932-2939.
9	CHEN L, WANG T, ZHAO Y, et al. Characterization of thermal and hydrodynamic properties for microencapsulated phase change slurry (MPCS)[J]. Energy Conversion & Management, 2014, 79: 317-333.
10	GIRO-PALOMA J, BARRENECHE C, MARTÍNEZ M, et al. Comparison of phase change slurries: Physicochemical and thermal properties[J]. Energy, 2015, 87: 223-227.
11	苏小燕.相变材料微胶囊在纺织品中的研究发展[J]. 现代纺织技术, 2011(1): 60-62.
	SU Xiaoyan. Research and development of phase change material microcapsules in textiles[J]. Advanced Textile Technology, 2011(1): 60-62.
12	杨建, 张国庆, 刘国金, 等. 复合相变微胶囊制备及其在棉织物上的应用[J]. 纺织学报, 2019, 40(10): 127-133.
	YANG Jian, ZHANG Guoqing LIU Guojin, et al. Preparation of composite phase change microcapsules and its application on cotton fabrics[J]. Journal of Textile Research, 2019, 40(10): 127-133.
13	王亮, 王涛, 林贵平.应用潜热型功能热流体的液冷服散热性能分析[J]. 航天医学与医学工程, 2011, 24(3): 186-190.
	WANG Liang, WANG Tao, LIN Guiping. Analysis on heat transfer of latent functionally thermal fluid applied to liquid cooling garment[J]. Space Medicine & Medical Engineering, 2011, 24(3): 186-190.
14	CHARUNYAKORN P, SENGUPTA S, ROY SK.Forced convection heat transfer in microencapsulated phase change material slurries: flow in circular ducts[J]. International Journal of Heat & Mass Transfer, 1991, 34(3): 819-833.
15	GOEL M, ROY S K, SENGUPTA S. Laminar forced convection heat transfer in microcapsulated phase change material suspensions[J]. International Journal of Heat & Mass Transfer, 1994, 37(4): 593-604.
16	ZENG R, WANG X, CHEN B, et al. Heat transfer characteristics of microencapsulated phase change material slurry in laminar flow under constant heat flux[J]. Applied Energy, 2009, 86(12): 2661-2670.
17	ZHANG Y, RAO Z, WANG S, et al. Experimental evaluation on natural convection heat transfer of microencapsulated phase change materials slurry in a rectangular heat storage tank[J]. Energy Conversion & Management, 2012, 59: 33-39.
18	SONG S, SHEN W, WANG J, et al. Experimental study on laminar convective heat transfer of microencapsulated phase change material slurry using liquid metal with low melting point as carrying fluid[J]. International Journal of Heat and Mass Transfer, 2014, 73: 21-28.
19	QIU Z, ZHOU Y, YAO Y, et al. Modification of microencapsulated phase change materials(MPCMs) by synthesizing graphene quantum dots(GQDs) and nano-aluminum for energy storage and heat transfer applications[J]. Energy, 2019, 181: 1331-1338.
20	DUTKOWSKI K, KRUZEL M. Microencapsulated PCM slurries’ dynamic viscosity experimental investigation and temperature-dependent prediction model[J]. International Journal of Heat and Mass Transfer, 2019, 145: 118741.
21	DRISSI S, LING T-C, MO KH. Thermal efficiency and durability performances of paraffinic phase change materials with enhanced thermal conductivity—A review[J]. Thermochimica Acta, 2019, 673: 198-210.
22	LU W, BAI F. A new model for analyzing laminar forced convective enhanced heat transfer in latent functionally thermal fluid[J]. Chinese Science Bulletin, 2004, 49(14): 1457-1464.
23	郝睿, 赵镇南.微胶囊化相变悬浮液层流传热强化的参数分析[J]. 工程热物理学报, 2006, 27(S2): 1-4.
	HAO Rui, ZHAO Zhennan. Parameters analyses on heat transfer enhancement for microencapsulated phase change suspension in laminar tube flow[J]. Journal of Engineering Thermophysics, 2006, 27(S2): 1-4.
24	靳健, 刘沛清, 林贵平. 层流下潜热型功能流体在内嵌圆柱圆管中的传热特性数值模拟分析[J]. 中国科学:技术科学, 2009, 39(5): 897-903.
	JIN Jian, LIU Peiqing,LIN Guiping. Numerical simulation and analysis of heat transfer characteristics of latent heat functional fluid in cylindrical tube with laminar flow[J]. Scientia Sinica(Technologica), 2009, 39(5): 897-903.
25	MA F, ZHANG P, SHI XJ. Flow and heat transfer characteristics of micro-encapsulated phase change material slurry and energy transport evaluation[J]. Energy Procedia, 2017, 105: 4607-4614.
26	KONG M, ALVARADO JL, TERRELL W, et al. Performance characteristics of microencapsulated phase change material slurry in a helically coiled tube[J]. International Journal of Heat and Mass Transfer, 2016, 101: 901-914.
27	QIU Z, LI L. Experimental and numerical investigation of laminar heat transfer of microencapsulated phase change material slurry (MPCMS) in a circular tube with constant heat flux[J]. Sustainable Cities and Society, 2020, 52: 101786.
28	高冬雪. 相变微胶囊悬浮液管内层流强迫对流换热分析[D]: 上海东华大学, 2017.
	GAO Dongxue. Laminar flow forced convection heat transfer of microencapsulated phase change material slurry in tube[D]:Shanghai: Donghua University, 2017.
29	张寅平, 胡先旭, 郝磬, 等. 等热流圆管内潜热型功能热流体层流换热的内热源模型及应用[J].中国科学(E辑), 2003, 33(3): 237-244.
	ZHANG Yingpin, HU Xiansu, HAO Qing, et al. Internal heat source model and application of laminar heat transfer of latent heat type functional hot fluid in an equal heat flux circular tube[J]. Scientia Sinica (Series E), 2003, 33(3): 237-244.
30	CHEN B, WANG X, ZENG R, et al. An experimental study of convective heat transfer with microencapsulated phase change material suspension: Laminar flow in a circular tube under constant heat flux[J]. Experimental Thermal & Fluid Science, 2008, 32(8): 1638-1646.

项目	密度/kg·m^–3	比热容/J·kg^–1·K^–1	黏度/kg·m^–1·s^–1	潜热/kJ·kg^–1	热导率/W·m^–1·K^–1
水	998.2	4182	0.001003	0	0.6
质量分数5%	1000	4054	0.001795	6.5	0.576
质量分数10%	1002	3926	0.00202	13	0.553
质量分数15.8%	1005	3776	0.00375	20.5	0.527

项目	密度/kg·m^–3	比热容/J·kg^–1·K^–1	黏度/kg·m^–1·s^–1	潜热/kJ·kg^–1	热导率/W·m^–1·K^–1
水	998.2	4182	0.001003	0	0.6
质量分数5%	1000	4054	0.001795	6.5	0.576
质量分数10%	1002	3926	0.00202	13	0.553
质量分数15.8%	1005	3776	0.00375	20.5	0.527

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