Design of a hydraulically driven compressive elastocaloric cooling system
Design of a hydraulically driven compressive elastocaloric cooling system
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DOI：
10.1080/23744731.2016.1171630
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发表时间：
2016-01-01
影响因子：
1.9
通讯作者：
Takeuchi, Ichiro
中科院分区：
文献类型：
--
作者：
Qian, Suxin;Geng, Yunlong;Takeuchi, Ichiro
本文介绍了由液压执行器驱动的弹热冷却系统的设计。系统采用轴向压缩负载模式下的镍钛管来提供冷却和加热。这些镍钛管被封装在四个相同的床中，由两个单向液压缸驱动。该系统在单级逆布雷顿循环下运行，通过电磁阀控制的复杂传热流体网络实现传热和热回收。基于之前研究的经验教训，两种新颖的设计被应用于该原型，以提高系统的性能。材料在特定流体流量和温差下的潜热的初步测试结果与文献报道的结果非常吻合。根据先前研究中开发的动态模型估计系统性能系数为 11.0，温升为 24.6K。
This article presents the design of elastocaloric cooling system driven by hydraulic actuators. Ni-Ti tubes under axial compressive loading mode are used in the system to provide cooling and heating. Those Ni-Ti tubes are enclosed in four identical beds, which are driven by two one-way hydraulic cylinders. Operated under the single-stage reverse Brayton cycle, the system achieves heat transfer and heat recovery by using a sophisticated heat transfer fluid network controlled by solenoid valves. Two novel designs to improve the system's performance based on the lessons learned from the previous studies are applied to this prototype. Preliminary test results of the material's latent heat at a specific fluid flow rate and temperature difference agree well with the results reported in the literature. System coefficient of performance of 11.0 and temperature lift of 24.6K are estimated based on a dynamic model developed in the previous study.