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Phase change material thermal diodes designed on the basis of different heat transfer forms and coefficients caused by different phase transition degrees in opposite heat transfer directions are considered as potential thermal management devices. However, the use of a variety of materials or only relying on numerical simulation research makes its structure complex or idealized, which reduces the possibility of practical application. Therefore, in this work, a simple thermal diode structure containing only CaCl2·6H2O single-phase variable material is proposed in combination with changes in heat transfer form and heat transfer coefficient in solid-liquid phase change and natural convection process. The corresponding device is prepared, and a steady-state heat flux test system is set up for experimental study, the measured results are close to those recorded in the literature with good accuracy. The influence of the temperature difference between hot end and cold end and the direction of positive heat transfer and negative heat transfer on the thermal rectification effect of the thermal diode are studied experimentally. The results show that the heat flux of the thermal diode decreases with the decrease of the difference in temperature between the cold source and hot source, and the thermal rectification ratio reaches to 1.58 when the forward and reverse along the antigravity direction and gravity direction, respectively. The optimal cold source temperature range is 20–25 ℃, which is close to room temperature. The proposed phase change material thermal diode structure has a certain application potential in energy saving and thermal management of building.
[1] Pehl M, Arvesen A, Humpenoeder F, Popp A, Hertwich E G, Luderer G 2017 Nat. Energy 2 939Google Scholar
[2] McGlade C, Ekins P 2015 Nature 517 187Google Scholar
[3] 赖明东, 雍熙, 史文静 , rhhz_volume 2022 rhhz_volume 自然辩证法研究 38 69Google Scholar
Lai M D, Yong X, Shi W J 2022 Stud. Dialectics. Nat. 38 69Google Scholar
[4] Yang L, Yan H Y, Lam J C 2014 Appl. Energ. 115 164Google Scholar
[5] Guan L 2023 Ordnance Mater. Sci. Eng. 46 126 [关玲 2023 兵器材料科学与工程 46 126]Google Scholar
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[8] Ma S, Jiang M D, Tao P, Song C Y, Wu J B, Wang J, Deng T, Shang W 2018 Prog. Nat. Sci. Mater. 28 653Google Scholar
[9] Tran M-K, Mevawalla A, Aziz A, Panchal S, Xie Y, Fowler M 2022 Processes 10 6
[10] Yuan K J, Shi J M, Aftab W, Qin M L, Usman A, Zhou F, Lv Y, Gao S, Zou R Q 2020 Adv. Funct. Mater. 30 8Google Scholar
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[12] Giro-Paloma J, Martinez M, Cabeza L F, Ines F A 2016 Renew. Sust. Energ. Rev. 53 1059Google Scholar
[13] Ghanekar A, Ji J, Zheng Y 2016 Appl. Phys. Lett. 109 5Google Scholar
[14] Traipattanakul B, Tso C Y, Chao C Y H 2019 Int. J. Heat Mass Transf. 135 294Google Scholar
[15] Meng Z N, Gulfam R, Zhang P, Ma F 2021 Int. J. Therm. Sci. 164 9Google Scholar
[16] Kasali S O, Ordonez-Miranda J, Joulain K. 2020 Int. J. Therm. Sci. 153 106393Google Scholar
[17] Ordonez-Miranda J, Hill J M, Joulain K, Ezzahri Y, Drevillon J 2018 J. Appl. Phys. 123 085102Google Scholar
[18] Wehmeyer G, Yabuki T, Monachon C, Wu J Q, Dames C 2017 Appl. Phys. Rev. 4 041304Google Scholar
[19] Zhang N, Yuan Y P, Cao X L, Du Y X, Zhang Z L, Gui Y W 2018 Adv. Eng. Mater. 20 1700753Google Scholar
[20] Incropera F P, DeWitt D P, Bergman T L, Lavine A S 1996 Fundamentals of Heat and Mass Transfer (5th Ed.) (New York: Wiley) pp563–601
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表 1 测试系统测量结果
Table 1. Results of the measurement system.
表 2 CaCl2·6H2O和CPP/CaCl2·6H2O的热物理性质
Table 2. Thermophysical properties of CaCl2·6H2O and CPP/CaCl2·6H2O.
材料及其相态 等效导热系数
K/(W·(m·K)–1)固态 CaCl2·6H2O 0.74 自然对流态CaCl2·6H2O 1.10 相变前CPP/CaCl2·6H2O 1.02 相变后CPP/CaCl2·6H2O 0.61 表 3 CaCl2·6H2O和CPP/CaCl2·6H2O的相变相关温度点
Table 3. Temperature points related to phase transitions of CaCl2·6H2O and CPP/CaCl2·6H2O.
材料 CaCl2·6H2O
初始相变
温度
Tm1/℃CaCl2·6H2O
相变峰值
温度
Tp1/℃CaCl2·4H2O
相变峰值
温度
Tp2/℃CaCl2·6H2O 25.2 27.6 45.13 CPP/CaCl2·6H2O 24.0 29.9 44.83 -
[1] Pehl M, Arvesen A, Humpenoeder F, Popp A, Hertwich E G, Luderer G 2017 Nat. Energy 2 939Google Scholar
[2] McGlade C, Ekins P 2015 Nature 517 187Google Scholar
[3] 赖明东, 雍熙, 史文静 , rhhz_volume 2022 rhhz_volume 自然辩证法研究 38 69Google Scholar
Lai M D, Yong X, Shi W J 2022 Stud. Dialectics. Nat. 38 69Google Scholar
[4] Yang L, Yan H Y, Lam J C 2014 Appl. Energ. 115 164Google Scholar
[5] Guan L 2023 Ordnance Mater. Sci. Eng. 46 126 [关玲 2023 兵器材料科学与工程 46 126]Google Scholar
Google ScholarGuan L 2023 Ordnance Mater. Sci. Eng.46 126 [6] Zhu H, Wang J J 2023 hydraul. Pneumatics Seals 43 55 [朱浩, 王晶晶 2023 液压气动与密封 43 55]Google Scholar
Google ScholarZhu H, Wang J J 2023 hydraul. Pneumatics Seals43 55 [7] Zhang X H, Li Z, Luo L G, Fan Y L, Du Z Y 2022 Energy 238 121652Google Scholar
[8] Ma S, Jiang M D, Tao P, Song C Y, Wu J B, Wang J, Deng T, Shang W 2018 Prog. Nat. Sci. Mater. 28 653Google Scholar
[9] Tran M-K, Mevawalla A, Aziz A, Panchal S, Xie Y, Fowler M 2022 Processes 10 6
[10] Yuan K J, Shi J M, Aftab W, Qin M L, Usman A, Zhou F, Lv Y, Gao S, Zou R Q 2020 Adv. Funct. Mater. 30 8Google Scholar
[11] Alva G, Lin Y X, Liu L K, Fang G Y 2017 Energ. Buildings 144 276Google Scholar
[12] Giro-Paloma J, Martinez M, Cabeza L F, Ines F A 2016 Renew. Sust. Energ. Rev. 53 1059Google Scholar
[13] Ghanekar A, Ji J, Zheng Y 2016 Appl. Phys. Lett. 109 5Google Scholar
[14] Traipattanakul B, Tso C Y, Chao C Y H 2019 Int. J. Heat Mass Transf. 135 294Google Scholar
[15] Meng Z N, Gulfam R, Zhang P, Ma F 2021 Int. J. Therm. Sci. 164 9Google Scholar
[16] Kasali S O, Ordonez-Miranda J, Joulain K. 2020 Int. J. Therm. Sci. 153 106393Google Scholar
[17] Ordonez-Miranda J, Hill J M, Joulain K, Ezzahri Y, Drevillon J 2018 J. Appl. Phys. 123 085102Google Scholar
[18] Wehmeyer G, Yabuki T, Monachon C, Wu J Q, Dames C 2017 Appl. Phys. Rev. 4 041304Google Scholar
[19] Zhang N, Yuan Y P, Cao X L, Du Y X, Zhang Z L, Gui Y W 2018 Adv. Eng. Mater. 20 1700753Google Scholar
[20] Incropera F P, DeWitt D P, Bergman T L, Lavine A S 1996 Fundamentals of Heat and Mass Transfer (5th Ed.) (New York: Wiley) pp563–601
[21] Tao W, Kong X F, Bao A Y, Fan C G, Zhang Y 2020 Materials 13 22Google Scholar
[22] Wang Y, Ge S X, Huang B J, Zheng Z 2019 Mater. Chem. Phys. 223 723Google Scholar
[23] Nagano K, Mochida T, Takeda S, Domanski R, Rebow M 2003 Appl. Therm. Eng. 23 229Google Scholar
[24] Cui W W, Zhang H Z, Xia Y P, Zou Y J, Xiang C L, Chu H L, Qiu S J, Xu F, Sun L X 2018 J. Therm. Anal. Calorim. 131 57Google Scholar
[25] Li G, Zhang B B, Li X, Zhou Y, Sun Q G, Yun Q 2014 Sol. Energ. Mater. Sol. C. 126 51Google Scholar
[26] Meng Z N, Gulfam R, Zhang P, Ma F 2020 Int. J. Heat Mass Transf. 147 118915Google Scholar
[27] Pallecchi E, Chen Z, Fernandes G E, Wan Y, Kim J H, Xu J 2015 Mater. Horiz. 2 125Google Scholar
[28] Chen R J, Cui Y L, Tian H, Yao R M, Liu Z P, Shu Y, Li C, Yang Y, Ren T L, Zhang G, Zou R Q 2015 Sci. Rep. 5 8Google Scholar
[29] Lyu J, Sheng Z Z, Xu Y Y, Liu C M, Zhang X T 2022 Adv. Funct. Mater. 32 19Google Scholar
[30] Wong M Y, Traipattanakul B, Tso C Y, Chao C Y H, Qiu H H 2019 Int. J. Heat Mass Transf. 138 173Google Scholar
[31] Swoboda T, Klinar K, Abbasi S, Brem G, Kitanovski A, Rojo M M 2021 Iscience 24 8Google Scholar
[32] Zhang X X, Zhou Y, Li X, Shen Y, Hi C X, Dong O Y, Ren X F, Zeng J B, Sun Y X, Wang S J, Yang X B 2018 Energy Storage Sci. Technol. 7 40 [张新星, 周园, 李翔, 申月, 海春喜, 董欧阳, 任秀峰, 曾金波, 孙艳霞, 王石军, 杨小波 2018 储能科学与技术 7 40]Google Scholar
Google ScholarZhang X X, Zhou Y, Li X, Shen Y, Hi C X, Dong O Y, Ren X F, Zeng J B, Sun Y X, Wang S J, Yang X B 2018 Energy Storage Sci. Technol.7 40 [33] Li S W, Fu B B, Li J 2022 Acta Materiae Compositae Sin. 39 2885 [李绍伟, 傅彬彬, 李静 2022 复合材料学报 39 2885]Google Scholar
Google ScholarLi S W, Fu B B, Li J 2022 Acta Materiae Compositae Sin.39 2885 [34] Luo F B, He Y F, Cui W Q, Guo Y Y, Jin Y C, Li H Z, Huang B Q, Qian Q R 2022 Acs Appl. Polym. Mater. 4 2160Google Scholar
[35] Cottrill A L, Wang S, Liu A T, Wang W J, Strano M S 2018 Adv. Energy Mater. 8 11Google Scholar
[36] Moench S, Dittrich R 2022 Energies 15 11Google Scholar
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