A MneZn ferrite magnetic fluid (TCF-56) having 5.6 mT fluid magnetization and high pyromagnetic coefficient, (vM/vT 1⁄4 177 A/m K) has been investigated as a coolant in a 3 kW prototype transformer for overloading condition (167%). The winding temperature of a transformer submerged in magnetic fluid reaches at 396.8 K after 3 h of overloading, which is 20 K lower, when the same experiment was c...

This paper discusses the use of MEMS-type devices for the cooling of microprocessors. Vapor compression refrigerators and circulated-coolant heat-exchange systems are analyzed. Water and commercial refrigerants are considered as working fluids. Calculations indicate that although vapor compression systems are capable of removing greater amounts of heat, circulated-coolant systems are far more p...

Liquid paraffin can be used as a coolant fluid in electronic and cutting devices due to its suitable capabilities such as electrical insulating, high heat capacity, chemical, and thermal stability, and high boiling point. In this study, the dynamic viscosity of paraffin containing the alumina nanoparticles has been examined experimentally. The nanofluids with different composition of alumina (0...

The abrasion is a significant issue, especially in machining of rigid steels. A functional and suitable approach for enhancing the heat transfer from machining area is using an intermediate fluid with higher heat transfer potential instead of common fluids. The objective of this experimental study is to discuss production, stability and thermal conductivity examination of water/graphene oxide n...

This study aims to improve the performance of vehicle's cooling system called radiator, which is part increasing energy efficiency. Research has been done investigate convective heat transfer hybrid nanofluid, using CuO and TiO2 nanoparticles water-ethylene glycol (RC) as base fluids on a radiator. The mass concentration varied from 0.25 %, 0.30 0.35 %. For preparation nanofluid through two-ste...

Cutting fluids, usually in the form of a liquid, are applied to the chip formation zone in order to improve the cutting conditions. Cutting fluid can be expensive and represents a biological and environmental hazard that requires proper recycling and disposal, thus adding to the cost of the machining operation. For these reasons dry cutting or dry machining has become an increasingly important ...

In this current era, increasing computing power, effort to reduce prototypes’ cost and time, and shorten design-toproduct time urges the need of numerical computation. Higher cooling’s load or requirement is attributed by higher power of engine. Also, higher quantity of heat exchangers and vehicles’ styling resulted limited space at vehicles’ hood. These factors have caused the design job of ve...

An instrumental module for external circular grinding has been developed, using methods of intermittent processing with replaceable abrasive bars a combined supply coolant through the pores and channels between them, its activation in special cavitation nozzles. Is to develop method inter-mittent tool that ensures stable operation wheel efficient cutting fluid zone. The assembling which provide...

Centrifugal pumps are used in cooling the engine by pumping water as coolant into the engine. The normal function of the coolant is to discharge coolant at a specific velocity into the engine coolant volume, once the coolant crosses 150 C temperatures then it is taken to the radiator for cooling to 50 C. Due to changes in the engine design it is desired to have changes in the centrifugal pump d...

Partial depletion of the primary circuit during a postulated small break loss of coolant accident can lead to the interruption of one-phase flow natural circulation. In this case, the decay heat is removed from the core in the reflux-condenser mode. In case of the partial non-availability of the safety injection system, weakly borated condensate can accumulate in particular in the pump loop sea...