脂肪酸相变储能板性能及控温效果模拟

doi:10.19799/j.cnki.2095-4239.2022.0503

储能科学与技术 ›› 2023, Vol. 12 ›› Issue (1): 247-254.doi: 10.19799/j.cnki.2095-4239.2022.0503

脂肪酸相变储能板性能及控温效果模拟

李琳¹^,²(), 王宇¹^,², 钱雯艳¹, 李东旭³

^1.宿迁学院建筑工程学院
^2.江苏省装配式建筑与智能建造工程研究中心，江苏宿迁 223800
^3.南京工业大学材料科学与工程学院，江苏南京 210009

收稿日期:2022-09-04 修回日期:2022-09-19 出版日期:2023-01-05 发布日期:2023-02-08
通讯作者: 李琳 E-mail:ll86268555@163.com
作者简介:李琳（1983—），女，博士，副教授，研究方向为建筑节能材料，E-mail：ll86268555@163.com。
基金资助:
国家自然科学基金项目(51872137);宿迁市科技计划资助项目(K202141);2021年宿迁市千名拔尖人才培养工程项目

Performance and temperature control effect simulation of fatty acid phase-change energy storage board

Lin LI¹^,²(), Yu WANG¹^,², Wenyan QIAN¹, Dongxu LI³

^1.School of Civil Engineering and Architectural, Suqian College
^2.Jiangsu Province Engineering Research Center of Prefabricated Building and Intelligent Construction, Suqian 223800, Jiangsu, China
^3.College of Material Science and Engineering, Nanjing Tech University, Nanjing 210009, Jiangsu, China

Received:2022-09-04 Revised:2022-09-19 Online:2023-01-05 Published:2023-02-08
Contact: Lin LI E-mail:ll86268555@163.com

摘要/Abstract

摘要：

以膨胀珍珠岩(EP)作为载体，选取CA-MA二元脂肪酸为相变芯材，通过熔融吸附法制备CA-MA/EP定形相变材料。为缓解固-液相变过程中脂肪酸的渗漏问题，采用白乳胶对CA-MA∶EP质量比为1∶1的定形相变材料进行包覆，将该定形相变材料掺入石膏基体中制备脂肪酸相变储能板，并对其进行了热导率、热物性及比热容的测试。结果表明，渗出稳定性评价证实了白乳胶包覆有效降低了脂肪酸从载体孔隙中渗出，CA-MA/EP定形相变材料的质量损失率由8%降低至4%，进一步强化了EP对于脂肪酸芯材的定形效果，有利于提高相变储能板使用过程中的长期储能稳定性和美观性。包覆后CA-MA/EP定形相变材料的相变温度和相变潜热分别为24.64 ℃和58.07 J/g。相变储能板的相变温度和相变潜热分别为24.62 ℃和29.10 J/g，其热导率随着定形相变材料掺量的增加而逐渐降低。利用Energy Plus软件对徐州夏季气候条件下基于相变围护结构的建筑室内温度波动进行模拟，证实了相变储能板具有隔热控温效果。

关键词: 脂肪酸, 相变储能板, 控温效果, 模拟

Abstract:

CA-MA/EP-shaped phase-change material (PCM) was prepared by melt adsorption with expanded perlite (EP) as the carrier and CA-MA binary fatty acid as the phase-change core material. CA-MA/EP (mass ratio = 1∶1) coated with white latex was mixed into the gypsum matrix to prepare the phase-change energy storage board to alleviate the leakage of fatty acid during the solid-liquid phase-change process. The thermal conductivity, thermal physical properties, and specific heat capacity were tested. The exudation stability evaluation's finding supported the white latex coating's capacity to successfully reduce fatty acid exudation from EP, and the mass loss rate of the CA-MA/EP-shaped PCM was reduced from 8% to 4%, further strengthening EP's ability to shape fatty acid. In the meanwhile, the long-term energy storage stability and aesthetics of the phase-change energy storage board were improved. The phase-change temperature and latent heat of CA-MA/EP and phase-change energy storage board were 24.64 ℃ and 58.07 J/g, and 24.62 ℃ and 29.10 J/g, respectively. As the content of shaped PCM rose, the thermal conductivity steadily decreased. The energy plus software was used to simulate the indoor temperature fluctuation of the building based on the phase-change building envelope under the summer climate conditions of Xuzhou. It was confirmed that the phase-change energy storage board has the effect of heat insulation and temperature control.

Key words: fatty acid, phase change energy storage board, temperature control effect, simulation

中图分类号:

TK 02

李琳, 王宇, 钱雯艳, 李东旭. 脂肪酸相变储能板性能及控温效果模拟[J]. 储能科学与技术, 2023, 12(1): 247-254.

Lin LI, Yu WANG, Wenyan QIAN, Dongxu LI. Performance and temperature control effect simulation of fatty acid phase-change energy storage board[J]. Energy Storage Science and Technology, 2023, 12(1): 247-254.

图/表 10

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种类	分子式	分子量	相变温度/℃	相变潜热/(J/g)
癸酸	C₁₀H₂₀O₂	172.26	34.8	146.5
肉豆蔻酸	C₁₄H₂₈O₂	228.37	55.1	175.7

试件	石膏粉/g	相变材料/g	水/g	减水剂/g
普通石膏板	2 920	0	1 752	29.2
1^#	2 920	292	1 752	29.2
2^#	2 920	584	1 752	29.2
3^#	2 920	730	1 752	29.2
4^#	2 920	876	1 752	29.2

CA-MA∶EP		加热前质量/g	加热后质量/g	质量损失/g	质量损失率/%
5∶5	包覆前	0.50	0.46	0.04	8
5∶5	包覆后	0.50	0.48	0.02	4
6∶4	包覆前	0.50	0.42	0.08	16
6∶4	包覆后	0.50	0.45	0.05	10
7∶3	包覆前	0.50	0.38	0.12	24
7∶3	包覆后	0.50	0.42	0.08	16

相变储能板	白乳胶/g	CA-MA/EP/g	相变材料掺量/%	热导率 /[W/(m·K)]
普通石膏板	—	—	—	0.35
1^#	146	146	10	0.34
2^#	292	292	20	0.33
3^#	365	365	25	0.31
4^#	438	438	30	0.29

结构名称	结构组成
外墙	涂料(10.0 mm)+玻纤网+防水层+水泥砂浆(10.0 mm)+20%相变石膏板(100.0 mm)+B035级加气混凝土砌块(150.0 mm)+水泥砂浆(10.0 mm)+涂料(10.0 mm)
内墙	涂料(8.0 mm)+石膏板(12.0 mm)+建筑钢材(75.0 mm)+岩棉板(50.0 mm)+建筑钢材(75.0 mm)+石膏板(12.0 mm)+涂料(8.0 mm)
外窗	塑钢中空低透光热反射玻璃窗

脂肪酸相变储能板性能及控温效果模拟

Performance and temperature control effect simulation of fatty acid phase-change energy storage board

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