The air separation plays an extremely important role in the development of metallurgical industry. And the air compressor which provides not only the required pressure air for the cooling equipment and refrigeration plant but also the raw material required for the separation plant is a key device in the air separation plant. Utilization of the air compressor is extremely extensive in many signi...

This study investigates the potential of using geothermal energy from abandoned oils in a novel three-loop system; geothermal, power and cooling loops to produce effect. The loop drives thermo-mechanical refrigeration (TMR) system consisting expander-compressor units (ECUs). advantages lie its simple, flexible, low-cost design as well ability be driven by low-temperature heat source (as low 60 ...

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...

The efficiency of the scroll compressor which employs the axial and the radial sealing techniques is competitive with that of the other rotary and the reciprocating compressors. The bearing load and the torque are smooth so that quiet operation is realized. 'l'herefore the machine is suitable particularly for air conditioning application. The authors have studied the scroll compressor which uti...

A. D. Kelly General Signal Laboratory Equipment 275 Aiken Road Asheville, NC 28806 Low temperature refrigeration mechanically and thermally stresses a compressor's wrist journal bearing. Knowledge of bearing condition would be useful for self-diagnostics or predictive maintenance, particularly in freezers used for storage of valuable biomedical products. This initial investigation considers ext...

Non-uniform inlet flows frequently occur in aircrafts and result chronological distortions of total temperature pressure at the engine inlet. Distorted flow operation axial compressor deteriorates aerodynamic performance, which reduces stall margin increases blade stress levels, turn causes failure. Deep learning is an efficient approach to predict catastrophic failure, its stability for better...

The realistic simulation of refrigerant compressors for heat pump applications is difficult because the needed physical parameters like clearance volume, blow-by, valve losses, polytropic coefficient(s), ohmic and core losses, jacket losses, etc. are not readily available. We have developed a simple yet very effective approach to this problem for our HFROST heat pump simulation program, which o...

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...