A steam generator is the major component of a nuclear power plant and its integrity is crucial for the nuclear safety. Steam generator tube eddy current bobbin inspections are periodically performed for utility to detect tube degradation. Scaled deposits on the steam generator tubes cause the performance degradation problem and the thickness of the outer diameter tube surface can be measured us...

This study presents the optimization of heat transfer coefficient a micro bare tube exchanger. A physical and mathematical model exchanger was built in Matlab using simplified ε-number unit method. Using temperature minus 30°C 0.5–1.0 mm outer diameter, 1.7–8.0 longitudinal pitch, 1.7–5 transverse 1.0–5.0 m/s velocity at minimum free flow area, with carbon dioxide as refrigerant, comparative va...

A mathematical model for blood flow in narrow capillaries under the effect of transverse magnetic field has been investigated. It is assumed that there is a lubricating layer between red blood cells and tube wall. The transient flow of the fit red blood cell surrounded by plasma annulus in the narrow capillary is considered. The analysis of fluid flow between red cell and tube wall, when the ce...

This study aims to develop and analyze the design of heat exchangers (HE) in synthesis PbO particles using a single precursor method. type HE shell tube one-pass is designed be simple. The specifications equipment are length 1.5200 m, diameter 0.1361 outer 0.0334 thickness 0.0243 m. Then calculation done manually Microsoft Excel application. results showed that with one pass has laminar flow, a...

Abstract Computational modelling of a centrifugal technique for separating binary mixtures thermoplastic polymers in the molten state is presented. The may be useful recycling polymeric materials. study investigates physical process component separation due to force batch process, showing potential using dispersed model describing complex mechanism underlying technique. Given long time scales c...

the pressure drop of refrigerant r-134a flow boiling inside a horizontal tube has been investigated experimentally. the test set-up which was used in this investigation is a well instrumented vapor compression refrigeration system. these instruments are thermocouples, flow meter, pressure gauges and the pressure drop measuring apparatus. this system consisted of three electrically heated evapor...

The kaolin suspension calcination technology is currently gaining attention as a new process of calcining kaolin. In this paper, the cooling system designed by CBMI Construction Co., Ltd. simulated using ANSYS Fluent software to analyze velocity field and temperature gas–solid two-phase flow Eulerian model. A compiled UDF (User-Defined Function) used simulate transfer mass heat from downcomer t...

In this paper, the heat transfer enhancement in a counter-flow double pipe exchanger with longitudinal rectangular fins on outer surface of inner tube was numerically investigated by ANSYS 20.R1 software using CFD package and finite volume method. Hot water flows at 60℃ while cold 25℃. The flow is laminar five mass rates from 0.012kg/s to 0.02kg/s) for hot side 0.01kg/s 0.03kg/s side. Two types...

Tube spinning is an effective plastic-forming technology for forming light-weight, high-precision and high-reliability components in high-tech fields, such as aviation and aerospace. However, cracks commonly occur in tube spinning due to the complexity of stress state, which severely restricts the improvement of the forming quality and forming limit of components. In this study, a finite elemen...