Design & Construction of An Experimental Setup for Measuring Thermal Conductivity of Versatile Range of Solid Materials

Aljunaid Azme, Saqibul Islam, Ali Masum, M. Majumder, Tariq Mahbub
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引用次数: 1

Abstract

The paper describes an experimental setup that measures the thermal conductivity of the versatile range of solid materials based on 1-dimensional thermal conductivity measurement by the steady-state method. In this method, the steady temperature at the steady-state condition in the 1-dimensional measurement is predicted by the transient temperature history, and thermal conductivity is calculated. In this experiment, water is used as a heating medium to ensure uniform heat flow through the substance. Three layers of insulation are provided on the specimen’s circumferential surface to reduce heat loss. No internal heat generation is allowed to develop as the material of the specimen is isotropic. The apparatus consists of two Nylon chambers with the specimen connected between them. The right chamber is filled with water and heated at a particular heat. Water enters the left chamber through the inlet port and leaves through an outlet port. Heat transfer occurs through the specimen, and a temperature difference is created between the inlet and outlet. The temperature vs distance curve from experimental measurements was drawn to determine the thermal conductivity of the specimen. The setup’s accuracy and consistency will be proven by comparing the experimental value with the theoretical value. The decision is made to determine Aluminum, Brass, Mild Steel, and Carbon Steel’s thermal conductivity to test the reliability of the experimental setup. Due to the testing of a versatile range of materials, the device provides the opportunity for comparative study for different materials concerning thermal conductivity. The theoretical principle is firstly preceded, and then our experimental procedure is described. The experimental setup has a simple design configuration that contains high-performance & inexpensive components. It is also manageable to use and well suited for research laboratories. Finally, based on experimental results, the measurement accuracy and sensibility performances are discussed.
多用途固体材料热导率测量实验装置的设计与建造
本文描述了一种基于一维稳态热导率测量的实验装置,该装置测量了多种固体材料的热导率。该方法通过瞬态温度历史预测一维测量中稳态条件下的稳态温度,并计算导热系数。在这个实验中,水被用作加热介质,以保证均匀的热流通过物质。在试样的周向表面设置了三层隔热层以减少热损失。由于试样的材料是各向同性的,因此不允许产生内部热。该装置由两个尼龙室组成,试样连接在它们之间。右边的腔室充满水,并在特定的温度下加热。水通过进水口进入左室,并通过出口口离开。热传递通过试样发生,并且在入口和出口之间产生温差。从实验测量中绘制温度与距离曲线,以确定试样的导热系数。将实验值与理论值进行比较,验证该装置的准确性和一致性。决定确定铝,黄铜,低碳钢和碳钢的导热性,以测试实验装置的可靠性。由于测试了各种各样的材料,该设备为不同材料的导热性的比较研究提供了机会。首先介绍了理论原理,然后介绍了我们的实验过程。实验装置具有简单的设计配置,包含高性能和廉价的组件。它也易于使用,非常适合研究实验室。最后,根据实验结果,讨论了测量精度和灵敏度性能。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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