Effect of porous structure parameter on the gas flow in the thermal transpiration pump

Ibrahim, Muhammad Zarif (2023) Effect of porous structure parameter on the gas flow in the thermal transpiration pump. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

The Knudsen Pump (KP) is a form of micro-pump that operates without the use of any mechanical parts through the use of thermally generated flows in rarefied gas conditions. These flows are induced by temperature fields. It has several benefits, such as having no moving parts, having a basic design structure, being straightforward to create, being able to work with a diverse array of energy sources, and having such a low energy consumption rate. Many researchers and academics have devoted a significant amount of time and effort to the investigation of KP since the advent of Micro Electro Mechanical Systems (MEMS) during the course of the years, and the majority of KP applications have been put to use in a variety of contexts. Because of the rapid growth of new technologies in today's world, it is necessary to make adjustments in order to be able to compute more precisely by employing simulations and analyses. However, there have not been a comprehensive study on the effect of porous structure parameter on the gas flow in the thermal transpiration pump. In this project, the best porosity design that has been fabricated by using 3D printing will be selected to be analyze and compare to the current porous medium available that has been used in Knudsen pumps. As the hot chamber is heated, hot gas will be produced within the chamber. Thermocouples is used to measure the temperature and pressure sensor is used to observe the pressure difference. After the temperature rises to the required value, the gas flow is observed. Therefore, the temperature difference as well as pressure difference can be analyzed.

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