Studying the Effects of Nanofluid as a Coolant

The shell and tube heat exchanger is designed with 5 baffles, 7 tubes, 1 housing. Because of the small size of the heat exchanger, all leaks and bypass are ignored. Chapter 2 Literature review 1 Heat exchanger The heat exchanger is an efficient heat transfer designed to transfer energy from one medium to another and transfer it. When one medium is cooled, the other medium is also heated. The media is usually separated by walls to avoid mixing or direct contact. They are widely used in chemical plants, refineries, air conditioners, refrigerators, petrochemical plants, natural gas processing and automotive applications.

Industrial coolers use a variety of coolants, each with its own profile. The three most common ones are liquid, nanofluid and liquid gas. Water is a popular liquid because it has high heat capacity and is not too expensive. Nanofluids are like liquids, and common coolants such as water are used as the basis for nanoparticles. Common nanoparticles include silica and geox, but it can also be made into liquid by cooling or compressing the gas. Nitrogen is the most commonly used gas, but in extreme cases it can also be used.

Sakanova et al. The influence of the wavy channel structure on hydrodynamic properties of the microchannel radiator was investigated. They found that the effect of adding nanoparticles in pure water to undulating walls is not obvious. Ladone etc. Numerical Study of Heat Transfer Microchannel Heat Sink Using Nanofluid in Low Concentration Photovoltaic System They show that nanofluid is an effective technique for enhancing heat transfer. Tabrizi and Seyf examined the flow of lamellar Al 2 O 3 - water nanofluid in the microchannel heat sink. They show that as the volume fraction of Al 2 O 3 and the size of the nanoparticles are increased, the occurrence of entropy decreases.

In this study, numerical study of hydrodynamic behavior of nanofluid (Fe 3 O 4 - water) in microchannel radiator (MCHS) with bias sector under magnetic field Simulated nanofluid flow using biphasic mixed model did. The flow is assumed to be laminar and stable and incompressible. Consider changing the influence of Reynolds number, power magnetic field and nanoparticle diameter on fluid behavior. The results showed that the coefficient of friction decreased and Nusselt number increased Reynolds number. Whit increases the pressure drop in the strength field, increasing the coefficient of friction and Nusselt number. The results show that the nonuniform magnetic field has a greater influence on the behavior of the nanofluid than the uniform fluid.