Preparation, thermal properties and thermal reliability of a novel mid-temperature composite phase change material for energy conservation
Preparation, thermal properties and thermal reliability of a novel mid-temperature composite phase change material for energy conservation
复制标题
新型中温复合节能相变材料的制备、热性能及热可靠性
DOI：
10.1016/j.energy.2017.04.087
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发表时间：
2017-07
期刊：
影响因子：
9
通讯作者：
Wang Shuangfeng
中科院分区：
文献类型：
--
作者：
Zhang Suling;Wu Wei;Wang Shuangfeng
家用和公共场所空调器冷凝热是一种不可缺少的余热，对其进行回收利用是十分必要的，相变材料被广泛应用于废热回收和蓄热。将膨胀石墨（EG）引入硬脂酸-乙酰胺（SA-AC）低共熔混合物中，旨在获得导热系数高、储热容量大、热重复性好的复合相变材料（CPCM）。DSC结果显示，与大多数有机低共熔复合物相比，CPCM的潜热为186.8 J g− 1，具有显著的储能能力。热力学第二定律被用来解释SA-AC/EG CPCM对应于原始SA-AC低共熔混合物的相变特性。CPCM的热导率比原始SA-AC提高了17.59倍。热导率和红外热图像结果证实CPCM具有显着的储热效率。经过500次加速热循环后，SA-AC/EG CPCM的热物理性能略有下降，但对储热性能没有明显影响。SA-AC/EG复合相变材料具有成本低、性能优良等优点，是一种很有前途的空调冷凝热回收节能材料。
Condensation heat of air-conditioner in household and public is a kind of indispensable waste heat, which is necessary to recover and reuse it. Herein, phase change material is widely used in exhaust heat recover and storage. In the present work, expanded graphite(EG) was introduced to stearic acid-acetamide(SA-AC) eutectic mixture, aiming at obtaining composite phase change material(CPCM) with high thermal conductivity, large heat storage capacity and favorable thermal repeatability for efficient heat recover. DSC results exhibited its remarkable energy storage capacity with a latent heat of CPCM of 186.8 J g−1compared to most of the organic eutectic composite. The second law of thermodynamics was used to explain the phase change characteristics of the SA-AC/EG CPCMs corresponding to the pristine SA-AC eutectic mixture. The thermal conductivity of the CPCM was enhanced by 17.59 times comparing to pristine SA-AC. The results of thermal conductivity and infrared thermal images confirmed the CPCM possessed prominent heat storage efficiency. The thermo-physical properties of the SA-AC/EG CPCM after 500 accelerated thermal cycles were slightly decreased which did no distinct influence on heat storage. Due to the low cost and remarkable properties, the SA-AC/EG CPCM was a promising candidate for energy conservation by condensation heat recovery of air-conditioner.
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影响因子：
11.2
作者：
Mingzhu Xia;Yanping Yuan;Xudong Zhao;Xiaoling Cao;Zhonghua Tang
通讯作者：
Mingzhu Xia;Yanping Yuan;Xudong Zhao;Xiaoling Cao;Zhonghua Tang
影响因子：
10.4
作者：
Sharma, A;Sharma, SD;Buddhi, D
通讯作者：
Buddhi, D
影响因子：
6.7
作者：
Lv, Yajun;Zhou, Weibing;Jin, Weizhun
通讯作者：
Jin, Weizhun
DOI：
10.1088/0022-3727/19/9/008
发表时间：
1986-09
期刊：
Journal of Physics D
影响因子：
--
作者：
N. Saxena;M. A. Chohan;S. Gustafsson
通讯作者：
N. Saxena;M. A. Chohan;S. Gustafsson
影响因子：
9
作者：
Nan Zhang;Yanping Yuan;Yanxia Du;Xiaoling Cao;Yaguang Yuan
通讯作者：
Nan Zhang;Yanping Yuan;Yanxia Du;Xiaoling Cao;Yaguang Yuan