Experimental investigation of an active magnetic regenerative heat circulator applied to self-heat recuperation technology
Experimental investigation of an active magnetic regenerative heat circulator applied to self-heat recuperation technology
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DOI：
10.1016/j.applthermaleng.2014.04.015
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发表时间：
2014-09
影响因子：
6.4
通讯作者：
Yuichi Kotani;Yasuki Kansha;M. Ishizuka;A. Tsutsumi
中科院分区：
文献类型：
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作者：
Yuichi Kotani;Yasuki Kansha;M. Ishizuka;A. Tsutsumi
对一种基于自回热技术的主动磁回热（AMR）热循环器进行了实验研究，以评价其在热循环中的节能潜力。在AMR热循环器中，磁热效应被应用于回收过程流体的热（火用）。回热后的热量可再用于加热进料工艺流体，实现自热回热。本文对AMR热循环器进行了新的构建，确定了AMR热循环器应用于自热回收时的循环热量和热循环器的能耗。钆和水分别用作磁热工作材料和工艺流体。通过测量处理流体和钆的温度来确定热循环量。热循环的净功输入由磁化力和退磁力以及磁热床的移动距离获得。并将计算结果与由热交换过程中的火用损失导出的热循环所需的最小功输入进行了比较。可以看出，实验获得的值接近热循环所需的最小功输入。
An experimental investigation into an active magnetic regenerative (AMR) heat circulator based on self-heat recuperation technology, was conducted to evaluate its energy saving potential in heat circulation. In an AMR heat circulator, magnetocaloric effect is applied to recuperate the heat exergy of the process fluid. The recuperated heat can be reused to heat the feed process fluid and realize self-heat recuperation. In this paper, AMR heat circulator has newly been constructed to determine the amount of heat circulated when applied to self-heat recuperation and the energy consumption of the heat circulator. Gadolinium and water was used as the magnetocaloric working material and the process fluid, respectively. The heat circulated amount was determined by measuring the temperature of the process fluid and gadolinium. The net work input for heat circulation was obtained from the magnetizing and demagnetizing forces and the distance travelled by the magnetocaloric bed. The results were compared with the minimum work input needed for heat circulation derived from exergy loss during heat exchange. It was seen that the experimentally obtained value was close to the minimum work input needed for heat circulation.