In long-distance gas transmission pipelines, there are many booster compressor stations consisting of parallel compressors that provide pressure for the delivery natural gas. So, it is economically important to optimize operation station. The station optimization problem a typical mixed integer nonlinear programming (MINLP) problem, and solving accurately stably challenge. this paper, we propos...

Aqila Wash Station is a micro business that washes motorcycles, mats and carpet in Deli Tua, sub-district North Sumatra province. Washing motorcycle may consume large amount of time this decreases customers’ satisfaction. The whole process performed manually using very simple tools tires the workers quickly, which results decrease their work quality. most common problem face soap depletion. nex...

Generation of coherent short-wavelength radiation across a plasma column is dramatically improved under traveling-wave excitation (TWE). The latter is optimized when its propagation is close to the speed of light, which implies small-angle target-irradiation. Yet, short-wavelength lasing needs large irradiation angles in order to increase the optical penetration of the pump into the plasma core...

A better understanding of turbulent unsteady flows is a necessary step towards a breakthrough in the design of modern compressors. Owing to high Reynolds numbers and very complex geometry, the flow that develops in such industrial machines is extremely hard to predict. At this time, the most popular method to simulate these flows is still based on a Reynolds-averaged Navier-Stokes approach. How...

In a hydrogen station that operates with direct fueling through the use of 700 bar boost compressor, outlet temperature can significantly increase, stressing chiller system. This paper evaluates improvements be made to auxiliary cooling system integrated compressor. Both theoretical modeling and experiments were performed at Cal State LA Hydrogen Research Fueling Facility. The findings suggest ...

Design models of multi- stage, axial flow compressor are developed for gas turbine engines. Axial flow compressor is one of the most important parts of gas turbine units. Therefore, its design and performance prediction are very important. One-dimensional modeling is a simple, fast and accurate method for performance prediction of any type of compressors with different geometries. In this appro...

the aim of this study is designing the impeller of a centrifugal compressor in order to supply pressure ratio for a 65 kw micro gas turbine. first, the primary thermodynamic analysis has been conducted for the considered cycle using a home made code. herein, the compressor pressure ratio was considered to be 4. the obtained thermal efficiency was 25.64%. then, the design of micro compressor in ...