Exothermic process and heat transfer of iron foam/paraffin composite phase change energy storage materials

doi:10.19799/j.cnki.2095-4239.2019.0280

Abstract

Abstract:

As a phase change material (PCM), paraffin exhibits high energy storage density. However, its thermal conductivity is low. In this study, paraffin wax was used as the PCM, whereas iron foam was used as the thermal-conductivity-enhancing material. The heat transfer performance of two types of iron foam during the paraffin exothermic process was explored by preparing the iron foam/paraffin composite phase change energy storage material and conducting its exothermic process test. The results denote that iron foam can reduce the heat release time of paraffin and improve the heat release efficiency. The phase transition times of the iron foam/paraffin composite PCMs having thicknesses of 10 and 15 mm are reduced by 1/3 and 1/4, respectively, and the phase change heat release densities are reduced by 1.60% and 3.26%, respectively, whereas the phase change heat release rates are 1.44 and 1.27 times that of the corresponding control group. Simultaneously, during the heat release process of 15 mm iron foam/paraffin composite PCM, the relation between the convective heat transfer coefficient, phase transition time, and material temperature was simulated, and corresponding theoretical formulas were obtained. The simulated value obtained by this formula is similar to the measured value. Thus, this formula can be used to predict the convective heat transfer coefficient of composite PCMs under different heat release times or material temperatures.

Key words: solar energy drying, phase change energy storage material, paraffin wax, iron foam, heat release time

CLC Number:

TK 02

WAN Qian, HE Luxi, HE Zhengbin, YI Songlin. Exothermic process and heat transfer of iron foam/paraffin composite phase change energy storage materials[J]. Energy Storage Science and Technology, 2020, 9(4): 1098-1104.

Figures/Tables 12

Fig.1

Fig.2

Fig.3

Fig.4

Table 1

Table 2

Fig.5

Fig.6

Fig.7

Fig.8

Fig.9

Fig.10

References 25

1	严良, 熊伟伟, 王小林, 等. 供需错配下能源替代路径优化[J]. 资源科学, 2019, 41(9): 1655-1664.
	YAN L, XIONG W W, WANG X L, et al. Energy substitution path optimization under supply and demand mismatch[J]. Resources Science, 2019, 41(9): 1655-1664.
2	仓定帮, 魏晓平, 曹明. 我国化石能源消费多因素分析——基于新能源替代与能源技术进步视角[J]. 数理统计与管理， 2020， 39（1）： 1-11.
	CANG D B, WEI X P, CAO M. Multi-factors analysis of China's fossil energy consumption-based on new energy substitution and energy technology progress[J]. Journal of Applied Statistics and Management, 2020， 39（1）： 1-11.
3	张小筠, 刘戒骄. 新中国70年环境规制政策变迁与取向观察[J]. 改革, 2019, 38(10): 16-25.
	ZHANG X Y, LIU J J. The evolution and orientation choice of environmental regulation policy in PRC from 1949 to 2019[J]. Reform, 2019, 38(10): 16-25.
4	XU B, ZHOU J, NI Z J, et al. Synthesis of novel microencapsulated phase change materials with copper and copper oxide for solar energy storage and photo-thermal conversion[J]. Solar Energy Materials and Solar Cells, 2018, 179: 87-94.
5	张新宇, 母军, 储德淼, 等. 太阳能预干联合热压干燥对桉木单板质量的影响[J]. 东北林业大学学报, 2019, 47(2): 81-87.
	ZHANG X Y, MU J, CHU D M, et al. Effect of Solar Pre-drying combined with hot-pressing on the quality of eucalyptus veneers[J]. Journal of Northeast Forestry University, 2019, 47(2): 81-87.
6	张力, 胡传坤, 高建民, 等. 太阳能与双热源热泵组合干燥落叶松[J]. 东北林业大学学报, 2014, 42(12): 141-144.
	ZHANG L, HU C K, GAO J M, et al. Solar energy and dual-source heat pump combined drying system on larch[J]. Journal of Northeast Forestry University, 2014, 42(12): 141-144.
7	ZHOU Z H, LIU J W, WANG C D, et al. Research on the application of phase-change heat storage in centralized solar hot water system[J]. Journal of Cleaner Production, 2018, 198: 1262-1275.
8	何峰, 李廷贤, 姚金煜, 等. 基于相变储热的太阳能多模式采暖系统及应用[J]. 储能科学与技术, 2019, 8(2): 311-318.
	HE F, LI T X, YAO J Y, et al. Solar multi-mode heating system based on latent heat thermal energy storage and its application[J]. Energy Storage Science and Technology, 2019, 8(2): 311-318.
9	TAO Y B, HE Y L. A review of phase change material and performance enhancement method for latent heat storage system[J]. Renewable and Sustainable Energy Reviews, 2018, 93: 245-259.
10	MAZMAN M, CABEZA L F, MEHLING H, et al. Utilization of phase change materials in solar domestic hot water systems[J]. Renewable Energy, 2009, 34(6): 1639-1643.
11	AL-HINTI I, AL-GHANDOOR A, MAALY A, et al. Experimental investigation on the use of water-phase change material storage in conventional solar water heating systems[J]. Energy Conversion & Management, 2010, 51(8): 1735-1740.
12	SIVASAMY P, DEVARAJU A, HARIKRISHNAN S. Review on heat transfer enhancement of phase change materials (PCMs)[J]. Materials Today: Proceedings, 2018, 56, Part 2: 14423-14431.
13	杨磊, 姚远, 张冬冬, 等. 有机相变储能材料的研究进展[J]. 新能源进展, 2019, 7(5): 1-9.
	YANG L, YAO Y, ZHANG D D, et al. Progress of organic phase change energy storage materials[J]. Advances in New and Renewable Energy, 2019, 7(5): 1-9.
14	陈颖, 姜庆辉, 辛集武, 等. 相变储能材料及其应用研究进展[J]. 材料工程, 2019, 47(7): 1-10.
	CHEN Y, JIANG Q H, XIN J W, et al. Research status and application of phase change materials[J]. Journal of Materials Engineering, 2019, 47(7): 1-10.
15	何正斌, 甘雪菲, 杨洁, 等. 石蜡相变储热管放热时间的理论预测与验证[J]. 农业工程学报, 2011, 27(12): 286-290.
	HE Z B, GAN X F, YANG J, et al. Theoretic prediction and verification of heat release time for paraffin phase change heat storage tubes[J]. Transactions of the Chinese Society of Agricultural Engineering, 2011, 27(12): 286-290.
16	ZEINELABDEIN R, OMER S, GAN G. Critical review of latent heat storage systems for free cooling in buildings[J]. Renewable and Sustainable Energy Reviews, 2018, 82: 2843-2868.
17	NAZIR H, BATOOL M, OSORIO F J B, et al. Recent developments in phase change materials for energy storage applications: A review[J]. International Journal of Heat and Mass Transfer, 2019, 129: 491-523.
18	HUANG X B, CHEN X, LI A, et al. Shape-stabilized phase change materials based on porous supports for thermal energy storage applications[J]. Chemical Engineering Journal, 2019, 356: 641-661.
19	刘洋. 基于石蜡-泡沫铜相变复合材料的储能散热器研究[D]. 包头: 内蒙古科技大学, 2018.
	LIU Y. Investigation on energy storage radiator based on paraffin-copper foam composite phase change material[D]. Baotou: Inner Mongolia University of Science & Technology, 2018.
20	徐众, 侯静, 万书权, 等. 金属泡沫/石蜡复合相变材料的制备及热性能研究[J]. 储能科学与技术, 2020, 9(1): 109-116.
	XU Zhong, HOU Jing, WAN Shuquan, et al. Preparation and thermal properties of metal foam/ paraffin composite phase change materials[J]. Energy Storage Science and Technology, 2020, 9(1): 109-116.
21	魏高升, 王遥, 杨彦平, 等. 基于孔尺度的泡沫金属强化相变储热材料传热性能数值模拟[J]. 发电技术, 2018, 39(2): 158-164.
	WEI G S, WANG Y, YANG Y P, et al. Pore-scale numerical simulation of heat transfer enhancement of phase change thermal energy storage materials with porous foam metals[J]. Power Generation Technology, 2018, 39(2): 158-164.
22	WANG Z C, ZHANG Z Q, JIA L, et al. Paraffin and paraffin/aluminum foam composite phase change material heat storage experimental study based on thermal management of Li-ion battery[J]. Applied Thermal Engineering, 2015, 78: 428-436.
23	万倩, 肖浩南, 钱京, 等. 泡沫铁对石蜡相变储热过程的影响[J]. 储能科学与技术, 2020, 9(1): 94-100.
	WAN Qian, XIAO Haonan, QIAN Jing, et al. Influence of iron foam on paraffin phase change heat storage process[J]. Energy Storage Science and Technology, 2020, 9(1): 94-100.
24	张佳利, 丁宇, 曲丽洁, 等. 石蜡/膨胀石墨复合相变储热单元的放热性能[J]. 储能科学与技术, 2019, 8(1): 116-123.
	ZHANG J L, DING Y, QU L J, et al. Discharge performance of a thermal energy storage unit with paraffin-expanded graphite composite phase change materials[J]. Energy Storage Science and Technology, 2019, 8(1): 116-123.
25	何正斌, 伊松林. 木材干燥理论[M]. 北京: 中国林业出版社, 2016: 59-62.
	HE Z B, YI S L. Wood drying theory[M]. Beijing: China Forestry Publishing House, 2016: 59-62.

材料种类	厚度/mm	t_1fj-10/min	t_2fj-10/min	Δt_fj-10/min	T_1fj-10/℃	T_2fj-10/℃
泡沫铁	10	1	55	54	60.0	43.0
纯石蜡	10	1	80	79	60.0	43.0

材料种类	厚度/mm	t_1fj-15/min	t_2fj-15/min	Δt_fj-15/min	T_1fj-15/℃	T_2fj-15/℃
泡沫铁	15	0	78	78	59.0	43.0
纯石蜡	15	0	102	102	59.0	43.0

[1]	Niangzhi LIN, Chuanchang LI. Phase change materials for energy storage in cold-chain transportation [J]. Energy Storage Science and Technology, 2021, 10(3): 1040-1050.
[2]	WAN Qian, XIAO Haonan, QIAN Jing, HE Zhengbin, YI Songlin. Influence of iron foam on paraffin phase change heat storage process [J]. Energy Storage Science and Technology, 2020, 9(1): 94-100.
[3]	ZOU Yong, QIU Rudong, WANG Xia. Simulation study on thermal storage process of paraffin phase change materials [J]. Energy Storage Science and Technology, 2020, 9(1): 101-108.
[4]	ZHANG Jiali, DING Yu, QU Lijie, HE Zhengbin, YI Songlin. Discharge performance of a thermal energy storage unit with paraffin-expanded graphite composite phase change materials [J]. Energy Storage Science and Technology, 2019, 8(1): 108-115.
[5]	LIU Peng, GU Xiaobin, QIN Shan. State-of-the-art development of numerical simulations of phase change materials based systems [J]. Energy Storage Science and Technology, 2018, 7(2): 221-231.
[6]	MAO Lingbo, LIANG Zhibin, LIN Jingtang, LI Futao, KONG Xiangzhan, JIA Demin. Phase change emulsions for latent heat transportation:Preparation and characterization [J]. Energy Storage Science and Technology, 2014, 3(2): 128-132.
[7]	ZHAO Liang, WANG Haiyang, FANG Xiangchen, WANG Gang, XU Hong. Modification of fly ash as a carrier of paraffin wax based phase change energy storage material for waste heat recovery [J]. Energy Storage Science and Technology, 2013, 2(6): 598-602.
[8]	MA Bingqian, LI Jianqiang, PENG Zhijian, DING Yulong. Paraffin based composite phase change materials for thermal energy storage: Thermal conductivity enhancement [J]. Energy Storage Science and Technology, 2012, 1(2): 131-138.