THERMAL-ENERGY STORAGE-SYSTEM WITH STEARIC-ACID AS PHASE-CHANGE MATERIAL

被引：50

作者：

HASAN, A

机构：

[1] Mechanical Engineering Department, Birzeit University, P.O. Box 14, Birzeit, West Bank via Israel

来源：

ENERGY CONVERSION AND MANAGEMENT | 1994年 / 35卷 / 10期

关键词：

FATTY ACIDS; LATENT HEAT; PHASE CHANGE MATERIAL; PHASE TRANSITION; STEARIC ACID; THERMAL ENERGY STORAGE;

D O I：

10.1016/0196-8904(94)90034-5

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

A simple tube-in-tube heat exchanger system for thermal energy storage employing stearic acid as PCM has been investigated in this work. The performance and heat transfer characteristics of such a system were studied. Phase transition temperature range and times were measured and the speed of the phase transition front was computed. The melting front was found to move in the radial direction inward as well as in the axial direction from the top toward the bottom of the phase change material PCM tube. The speed of the melting front is enhanced by a convection heat transfer mechanism in the melted PCM. The heat transfer rate and, consequently, phase transition time can be altered by changing the water inlet temperature to the heat exchanger. In addition, a faster phase transition is realized by placing the heat exchanger in a horizontal position rather than a vertical one.

引用

页码：843 / 856

页数：14

共 8 条

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