The air compressor plays an extremely important role in the production of air separation. It provides the required specifications of compressed air for the follow-up air separation processes. It is difficult for an air compressor system to achieve the on-site production requirements because it is a time-varying, delay and nonlinear complex system. Articles for air compressor control system desi...

The general requirements for the automatic excitation control system of synchronous motors a compressor unit are shown, taking into account its operating modes. A mathematical model is presented, block diagram circuits motor and an exciter, which characterizes feedback internal properties this part in dynamics. closed-loop obtained, elasticity mechanical hard blow gas pipeline. obtained structu...

The effects of compressor speed variation on the heat transfer inside a speed controlled compressor were investigated in this study. Based on the lumped capacitance ntethod, the temperatures of the compressor components, the oil, and the refrigerant gas within the shell were modeled and simulated on a relative scale. A diffenmt heat transfer coefficient correlation was developed to evaluate the...

The effect of liquid compressibility in the two-stage piston hybrid positive-displacement machine with a was considered. Based on volume conservation equation, we developed calculus methodology for during gas compression second stage compressor section. A numerical experiment made it possible to establish that some parameters have greatest relative decrease height and velocity layer. These are ...

Data compression techniques can alleviate bandwidth problems in even multigigabit networks and are especially useful when combined with encryption. This paper demonstrates a reconfigurable hardware compressor/ decompressor core, the Titan-R, which can compress/decompress data streams at 8.5 Gb/sec making it the fastest reconfigurable such device ever proposed; the presented full-duplex implemen...

This paper reports on a project, conducted jointly between SaskEnergy/Transgas and the University of Regina, which aims at developing an integrated decision support system for the optimization of natural gas pipeline operations. In this integrated approach, both expert systems and operations research techniques are used to model the operations of the gas pipelines. The decision support system c...

In the long distance pressure pipeline, sudden change of instantaneous caused by rapid liquid velocity is called water hammer, which seriously threatens safe operation hydropower station. this paper, development and calculation methods transient flow percussion theory are introduced, different models numerical analyzed compared. Finally, problems in research hammer prevention measures summarize...

A Burrows-Wheeler Compressor breaks input into blocks, quickly makes each more compressible, and compresses the modified block with a simple arithmetic or Huffman compressor. We propose an error-resilient Inverse Burrows-Wheeler Compressor. It uses a small amount of overhead alongside output from an ordinary BWT and MTF. It is also size-competitive with BZIP, a popular Burrows-Wheeler compressor.