The cooling with cutting fluids is a complex process in manufacturing, since chemical, mechanical and thermal phenomena occur simultaneously. experimental methods developed so far do not allow for direct observation of the coolant flow during machining, which limits understanding mechanism. main aim this paper investigation convective heat transfer between fluid zone as well distribution on too...

It is shown that the translational degrees of freedom of a large variety of molecules, from light diatomic to heavy organic ones, can be cooled sympathetically and brought to rest ~crystallized! in a linear Paul trap. The method relies on endowing the molecules with an appropriate positive charge, storage in a linear radio frequency trap, and sympathetic cooling. Two well-known atomic coolant s...

Abstract In this study, nanofluids formed by using ethylene glycol and three kinds of nanoparticles such as Al 2 O 3 , SiO 2, TiO were added to the four-stroke internal combustion engine radiator compared with conventional coolant (pure water). This comparison is based on exergy performances which are main theme second law thermodynamics. The tests carried out at a fixed speed 1800 rpm diesel f...

In the design of magnetic confinement nuclear fusion power plants, breeding blanket (BB) plays a crucial role since it must fulfil key functions such as tritium breeding, radiation-shielding, and removal heat generated by plasma. The latter task is achieved first wall (FW) zone (BZ) cooling systems, which in water-cooled lithium–lead (WCLL) BB employ pressurized water. Different arrangements BZ...

Introduction Trends in power electronics systems and devices over the last decade have placed increasing demands on the efficiencies of the thermal management systems used for power MOSFET and IGBT modules. The pressure to decrease the size of power electronics systems and, subsequently, the module, has resulted in a 50% footprint area reduction of some IGBT modules. This has resulted in higher...

A soft computing system used to optimize deep drilling operations under high-speed conditions in the manufacture of steel components is presented. The input data includes cutting parameters and axial cutting force obtained from the power consumption of the feed motor of the milling centres. Two different coolant strategies are tested: traditional working fluid and Minimum Quantity Lubrication (...

Coolant plays important characteristic in automobile industry to prevent failure and damage by balancing the temperature. Due this approach, coolants are being used as new thermal fluid study heat transfer coefficient performance. This consists of an experimental investigation internal convective 50:50 Water-Ethylene Glycol based Nano-fluid through a copper tube 18mm external diameter 16.5mm te...

A thermosyphon loop, designed for the thermal management of a large Medium voltage power converter 5 MW overall, corresponding to 2.4 kW load per cooling unit) is presented. The device mainly made an evaporator, condenser and reservoir connected with plastic liquid vapor lines. Novec 649 (3M) has been chosen as working fluid due environmental electrical concerns. model loop described, its predi...

Huge amount of low-grade heat energy is discharged to the environment by vehicular engines. Considering the large number of vehicles in the world, such waste energy makes great impacts to our environment globally. Organic Rankine Cycle (ORC), which uses an organic fluid with a low boiling point working medium, is considered as the most promising technology to recover energy from low-grade waste...

This paper proposes a computationally-efficient electromagnetic (EM)-computational fluid dynamics (CFD) coupling approach for water-cooled Interior Permanent Magnet (IPM) motor. The numerical simulation of multiple fluids and their interaction with solid parts can be challenging. proposed relies on the heat transfer coefficient (HTC) decomposition different fluids/coolants inside machine to gen...