|Table of Contents|

Experimental Study on Enhancing Paraffin Melting Rate with the Large-Aperture Regular Porous Media(PDF)

《南京师大学报（自然科学版）》[ISSN:1001-4616/CN:32-1239/N]

Issue:
2022年03期
Page:
20-26,34
Research Field:
物理学
Publishing date:

Info

Title:
Experimental Study on Enhancing Paraffin Melting Rate with the Large-Aperture Regular Porous Media
Author(s):
Li Shuqian1; 3; 4; Liu Ziyuan1; 3; 4; Han Chao1; 3; Li Tongdong1; Fu Jianhang1; Zhang Qiangwu2
(1.School of Civil Engineering,Hebei University of Water Resources and Electric Engineering,Cangzhou 061001,China)(2.School of Architecture,Hebei University of Science and Technology,Shijiazhuang 050018,China)(3.Hebei Technology Innovation Center of Phase Change Thermal Management of Internet Data Center,Cangzhou 061001,China)(4.Cangzhou Technology Innovation Center of Thermal Storage and Electromagnetic Heating with Low Grade Waste Heat,Cangzhou 061001,China)
Keywords:
the large-aperture regular porous media; paraffin melting; solid-liquid interface; temperature rising rate; natural convection
PACS:
TK124,TK02
DOI:
10.3969/j.issn.1001-4616.2022.03.004
Abstract:
It is an effective way of improving related thermal storage equipment to enhance phase change materials melting rate. In the aspect of pore structure,it is different between the common foam metal and the large-aperture regular porous media developed by us,which is made of brass and is part of the test section together with paraffin and PC circular tube. Compared with the test section with only paraffin,the effect and mechanism of the large-aperture regular porous media on paraffin melting rate enhancement was investigated through visualization experiment and transient temperature measurement of typical locations. The results show that,there is no mushy zone during paraffin melting process for the test section with the large-aperture regular porous media. Additionally,the moving height of solid-liquid interface is larger and temperature rise is faster for paraffin in the test section with the large-aperture regular porous media compared with the test section with only paraffin. Also,the large-aperture regular porous media could significantly enhance natural convection at the location of measuring point C3a where it is farther from the heating surface,and the temperature at this location was higher than that of the nearest measuring point C1 after 500 minutes.

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Last Update: 2022-09-15