针对夏热冬冷地区的新型承载蓄热超结构墙体力学性能与温控效能研究

姚翔宇; 马建斌; 王飞娅; 杨肖虎

doi:10.21656/1000-0887.450172

针对夏热冬冷地区的新型承载蓄热超结构墙体力学性能与温控效能研究

doi: 10.21656/1000-0887.450172

1.
重庆水利电力职业技术学院建筑工程学院，重庆 402160
2.
西安交通大学人居环境与建筑工程学院，西安 710049

(我刊编委卢天键推荐)

基金项目:

重庆市教委科学技术研究项目 KJQN202303805

重庆市教委科学技术研究项目 KJQN202103810

详细信息

作者简介:
姚翔宇(1987—)，男，讲师，硕士(E-mail: yaoxiangyu@cqsdzy.com)

通讯作者:
杨肖虎(1986—)，男，教授，博士，博士生导师(通讯作者. E-mail: xiaohuyang@xjtu.edu.cn)

中图分类号: TK02;O341
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- 文章访问数: 160
- HTML全文浏览量: 62
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- 被引次数: 0
出版历程
- 收稿日期: 2024-06-11
- 修回日期: 2024-07-11
- 刊出日期: 2024-08-01

Investigation on Mechanical Properties and Temperature Control Efficiency of Novel Load-Bearing and Heat-Storing Metastructure Walls in Hot Summer-Cold Winter Regions

1.
School of Architectural Engineering, Chongqing Water Resources and Electric Engineering College, Chongqing 402160, P.R.China
2.
School of Human Settlements and Civil Engineering, Xi'an Jiaotong University, Xi'an 710049, P.R.China

(Recommended by LU Tianjian, M.AMM Editorial Board)

摘要

摘要: 相变蓄热墙体能够有效降低室外温度波动对内墙面温度的干扰，提升室内热环境的稳定性并降低建筑能耗. 由于冬夏季气象条件的差异，相变材料(phase change material，PCM)熔点的选择成为影响墙体热工性能的重要因素. 为了实现蓄热墙体冬夏两季的高效利用，该研究构建了新型承载蓄热超结构墙体数值模型，对墙体力学性能进行检验，并模拟了冬季典型日和夏季典型日空气对流换热下墙体传热特性. 结果表明，新型承载蓄热超结构墙体的力学性能满足工程应用需求，同时相较普通墙体具有良好的传热特性. 其中，熔点为20 ℃的墙体在冬季热工性能最好，峰值相变率达到0.30，且内壁面最大温度波动为5.8 ℃，在夏季工况中，熔点为30 ℃的墙体具有较高的相变利用率为0.48，熔点为24 ℃的墙体内壁面温度波动最小. 最后，综合考虑相变利用率和衰减倍数，获得了夏热冬冷地区最佳相变墙体熔点为24 ℃.
- 承载蓄热墙体 /
- 相变材料 /
- 力学性能 /
- 温控效能 /
- 数值模拟
Abstract: A phase change material (PCM) heat-storing wall can effectively mitigate the impact of outdoor temperature fluctuations on internal wall surface temperatures, enhance the stability of the indoor thermal environment, and reduce building energy consumption. The selection of the PCM melting point is crucial due to the differing weather conditions in the winter and the summer. To optimize the performances of heat-storing walls for both seasons in hot summer-cold winter regions, a numerical model for a novel load-bearing and heat-storing metastructure wall incorporating multi-melting point PCMs was developed. This model was used to evaluate the mechanical properties and simulate the heat transfer characteristics of the wall under air convection heat transfer conditions on representative winter and summer days. The results demonstrate that, the mechanical properties of the phase change thermal storing wall meet the engineering application requirements, and its heat transfer characteristics surpass those of ordinary walls. Specifically, the wall with a PCM melting point of 20 ℃ exhibits superior thermal performance in the winter, with a peak phase transformation rate of 0.30 ℃ and a maximum inner wall temperature fluctuation of 5.8 ℃. In the summer, the wall with a PCM melting point of 30 ℃ shows a higher phase transformation utilization rate of 0.48, while the wall with a melting point of 24 ℃ experiences the lowest temperature fluctuation. Therefore, with both the utilization ratio and the attenuation ratio considered, the optimal melting point for a phase change wall would be 24 ℃.
- load-bearing and heat-storing wall /
- phase change material /
- mechanical property /
- temperature control efficiency /
- numerical simulation
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1) (我刊编委卢天键推荐)

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图 1 普通墙体与新型承载蓄热超结构墙体模型(单位: m)

Figure 1. Models for the ordinary wall and the novel load-bearing and heat-storing metatructure wall (unit: m)

下载: 全尺寸图片幻灯片

图 2 冬夏季室外空气综合温度变化曲线

Figure 2. Comprehensive temperature change curves of outdoor air in the winter and the summer

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图 3 模型实验验证

注为了解释图中的颜色，读者可以参考本文的电子网页版本，后同.

Figure 3. Experimental verification of the numerical model

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图 4 不同荷载下两种墙体侧向最大位移与最大剪切力对比

Figure 4. Comparison of maximum lateral displacements and maximum shear forces of 2 kinds of walls under different loads

下载: 全尺寸图片幻灯片

图 5 冬夏两季不同熔点墙体液相率随时间变化曲线

Figure 5. Curves of wall liquid phase ratios with different melting points in the winter and the summer over time

下载: 全尺寸图片幻灯片

图 6 冬夏两季不同熔点墙体蓄热量随时间变化曲线

Figure 6. Curves of wall heat storages per unit length with different melting points in the winter and the summer over time

下载: 全尺寸图片幻灯片

图 7 冬夏两季不同熔点墙体内壁面温度随时间变化曲线

Figure 7. Curves of internal wall temperatures with different melting points in the winter and the summer over time

下载: 全尺寸图片幻灯片

图 8 冬夏两季不同熔点新型承载蓄热超结构墙体的相变利用率和衰减倍数

Figure 8. Phase change utilizations and decay ratios of the novel load-bearing and heat-storing metastructure wall with different melting points in the winter and the summer

下载: 全尺寸图片幻灯片

表 1 墙体材料和新型相变材料的物理性质

Table 1. Physical properties of wall materials and novel phase change materials

parameter	ρ/(kg·m^-3)	c_p/(J·kg^-1·K^-1)	λ/(W·m^-1·K^-1)	L/(kJ·kg^-1)
ordinary wall	2 400	800	2.10	-
PCM wall	1 680(S)/1 600(L)	2 000	0.54(S)/0.48(L)	180

下载: 导出CSV

表 2 不同熔点的蓄热墙体模型

Table 2. The heat storing wall models with different melting points

case	case 1	case 2	case 3	case 4	case 5	case 6
T_m/℃	20	22	24	26	28	30

下载: 导出CSV

表 3 网格无关性与步长独立性验证

Table 3. Grid and time step independence verifications

grid number	time step Δt/s	T_{A, 21 600}/℃	T_{A, 43 200}/℃	T_{A, 21 600}/℃
40 608	1	22.98	14.96	9.76
26 488	1	22.93	14.99	9.77
18 574	1	22.23	15.13	9.89
26 488	0.5	22.90	14.98	9.75
26 488	1.5	22.81	14.85	9.70

下载: 导出CSV

参考文献(26)

[1]	HAFEZ F S, SA'DI B, SAFA-GAMAL M, et al. Energy efficiency in sustainable buildings: a systematic review with taxonomy, challenges, motivations, methodological aspects, recommendations, and pathways for future research[J]. Energy Strategy Reviews, 2023, 45: 101013. doi: 10.1016/j.esr.2022.101013
[2]	LIU Z, ZHANG X, SUN Y, et al. Advanced controls on energy reliability, flexibility and occupant-centric control for smart and energy-efficient buildings[J]. Energy and Buildings, 2023, 297: 113436. doi: 10.1016/j.enbuild.2023.113436
[3]	SELVARAJ R, KUTHADI V M, BASKAR S. Smart building energy management and monitoring system based on artificial intelligence in smart city[J]. Sustainable Energy Technologies and Assessments, 2023, 56: 103090. doi: 10.1016/j.seta.2023.103090
[4]	PAN Y, ZHU M, LV Y, et al. Building energy simulation and its application for building performance optimization: a review of methods, tools, and case studies[J]. Advances in Applied Energy, 2023, 10: 100135.
[5]	ZHU W, HUANG B, ZHAO J, et al. Impacts on the embodied carbon emissions in China's building sector and its related energy-intensive industries from energy-saving technologies perspective: a dynamic CGE analysis[J]. Energy and Buildings, 2023, 287: 112926.
[6]	BALALI A, YUNUSA-KALTUNGO A, EDWARDS R. A systematic review of passive energy consumption optimisation strategy selection for buildings through multiple criteria decision-making techniques[J]. Renewable and Sustainable Energy Reviews, 2023, 171: 113013. doi: 10.1016/j.rser.2022.113013
[7]	SU X, HUANG Y, CHEN C, et al. A dynamic life cycle assessment model for long-term carbon emissions prediction of buildings: a passive building as case study[J]. Sustainable Cities and Society, 2023, 96: 104636. doi: 10.1016/j.scs.2023.104636
[8]	吴赛, 赵均海, 李楠, 等. 被动围压下混凝土的动态力学性能研究[J]. 应用力学学报, 2015, 32(6): 992-998. WU Sai, ZHAO Junhai, LI Nan, et al. Dynamic behavior of concrete under passive confinement[J]. Chinese Journal of Applied Mechanics, 2015, 32(6): 992-998. (in Chinese)
[9]	黄河, 高佳徐, 任智彬, 等. 内三角管式快速蓄放热单元的肋片拓扑优化[J]. 应用数学和力学, 2022, 43(11): 1238-1248. doi: 10.21656/1000-0887.420198 HUANG He, GAO Jiaxu, REN Zhibing, et al. Topology optimization of fins for rapid heat storage and release in triangular-inside tube units[J]. Applied Mathematics and Mechanics, 2022, 43(11): 1238-1248. (in Chinese) doi: 10.21656/1000-0887.420198
[10]	黄钦, 余凌峰, 陈凯. 相变材料耦合冷板电池热管理系统的优化设计[J]. 应用数学和力学, 2022, 43(11): 1195-1202. HUANG Qin, YU Lingfeng, CHEN Kai. Design of the battery thermal management system with phase change material coupled cold plates[J]. Applied Mathematics and Mechanics, 2022, 43(11): 1195-1202. (in Chinese)
[11]	潘涵婷, 许多, 徐洪涛, 等. 空穴效应下泡沫金属复合相变材料热性能数值模拟[J]. 应用数学和力学, 2024, 45(1): 85-96. PAN Hanting, XU Duo, XU Hongtao, et al. Numerical analysis on thermal performances of metal foam composite phase change materials under cavity effects[J]. Applied Mathematics and Mechanics, 2024, 45(1): 85-96. (in Chinese)
[12]	LI C, WEN X, CAI W, et al. Phase change material for passive cooling in building envelopes: a comprehensive review[J]. Journal of Building Engineering, 2023, 65: 105763. doi: 10.1016/j.jobe.2022.105763
[13]	CHEN J, GONG Q, LU L. Evaluation of passive envelope systems with radiative sky cooling and thermally insulated glazing materials for cooling[J]. Journal of Cleaner Production, 2023, 398: 136607.
[14]	杨立杰. 相变储能材料在建筑工程建设中的应用[J]. 储能科学与技术, 2024, 13(5): 1471-1473. YANG Lijie. Research on the application of phase change energy storage materials in construction engineering[J]. Energy Storage Science and Technology, 2024, 13(5): 1471-1473. (in Chinese)
[15]	ZHOU S, SONG M, SHAN K, et al. Effects of the position and melting point of the PCM layer on the comprehensive thermal performance of a Trombe wall under mixed dry climate[J]. Energy and Buildings, 2024, 307: 113932.
[16]	陈萨如拉, 常甜馨, 杨洋, 等. 既有建筑嵌管式相变复合墙体夏季热特性研究[J]. 中国科学技术大学学报, 2021, 51(11): 840-856. CHENG Sarula, CHANG Tianxin, YANG Yang, et al. Summer thermal performance study on pipe-embedded PCM composite wall in existing buildings[J]. Journal of University of Science and Technology, 2021, 51(11): 840-856. (in Chinese)
[17]	孟凡康, 褚琦, 王朔, 等. 周期性边界条件下PCM填充墙体空间分布形式的传热影响[J]. 太阳能学报, 2019, 40(10): 2851-2856. MENG Fankang, CHU Qi, WANG Shuo, et al. Effect of spatial distribution of PCM filling wall on heat transfer under periodic boundary conditions[J]. Acta Energiae Solaris Sinica, 2019, 40(10): 2851-2856. (in Chinese)
[18]	张源, 戴晓丽. 相变温度对相变蓄能墙体热性能影响特性[J]. 江苏大学学报(自然科学版), 2018, 39(6): 671-677. ZHANG Yuan, DAI Xiaoli. Influencing characteristics of phase change temperature on thermal performance of phase change energy storage wall[J]. Journal of Jiangsu University (Natural Science Edition), 2018, 39(6): 671-677. (in Chinese)
[19]	王刚, 李祥立. 相变墙体应用于办公建筑的多目标优化设计[J]. 暖通空调, 2024, 54(6): 82-88. WANG Gang, LI Xiangli. Multi-objective optimization design of phase-change walls in office buildings[J]. Heating Ventilating & Air Conditioning, 2024, 54(6): 82-88. (in Chinese)
[20]	WANG J C. Young's modulus of porous materials[J]. Journal of Materials Science, 1984, 19(3): 801-808.
[21]	LUTZ M P, ZIMMERMAN R W. The effect of pore shape on the Poisson ratio of porous materials[J]. Mathematics and Mechanics of Solids, 2021, 26(8): 1191-1203.
[22]	YANG X H, BAI J X, YAN H B, et al. An analytical unit cell model for the effective thermal conductivity of high porosity open-cell metal foams[J]. Transport in Porous Media, 2014, 102(3): 403-426.
[23]	SHARSHIR S W, JOSEPH A, ELSHARKAWY M, et al. Thermal energy storage using phase change materials in building applications: a review of the recent development[J]. Energy and Buildings, 2023, 285: 112908.
[24]	ANTER A G, SULTAN A A, HEGAZI A A, et al. Thermal performance and energy saving using phase change materials (PCM) integrated in building walls[J]. Journal of Energy Storage, 2023, 67: 107568.
[25]	朱颖心. 建筑环境学[M]. 4版. 北京: 中国建筑工业出版社, 2016. ZHU Yingxin. Built Environment[M]. 4th ed. Beijing: China Architecture & Building Press, 2006. (in Chinese)
[26]	张源, 吴志伟, 葛凤华, 等. 夏热冬冷地区双层相变材料墙体热工性能分析[J]. 江苏大学学报(自然科学版), 2019, 40(4): 465-471. ZHANG Yuan, WU Zhiwei, GE Fenghua, et al. Thermal performance analysis of a double-layer phase change material wall in hot summer and cold winter area[J]. Journal of Jiangsu University (Natural Science Edition), 2019, 40(4): 465-471. (in Chinese)