The performance prediction of axial flow compressors at different speeds and under various pressure ratio conditions are still being developed because of costly empirical experiments. One-dimensional modeling is a simple, fast and accurate method for performance prediction in any type of compressor with different geometries. In this approach, inlet flow conditions and compressor geometry are kn...

Aircraft engines constitute a comp‌lex system, requiring adequate mon-itoring to ensure flight safety and timely maintenance. The best way to achieve this, is modeling the engine. Therefore, in this paper, a suitable mathematical model from engine controller design point of view, for a specific aero turbine engine is proposed by the aid of MATLAB/Simulink software. The model is capable of reduc...

There are two kinds of dual split type air-conditioner. One is of using two compressors for two indoor units; the other has only one compressor for two indoor units. The EER and refrigerating capacity of the former kind are just the same as the single split type's. But to one compressor dual split type system, there are two working ways: 1. compressor and both two indoor units operating, and 2....

Due to the gradatory reduction and exuberant ingestion of fossil fuels subsequent environmental problems, accretive work has been paid utilization renewable energy sources, such as solar energy. Solar Photovoltaic System or Power is one systems which uses PV units convert sunlight into electricity. A DC compressor 12 V/80 W, V/50 Ah battery, a pair V/175 W panels connected in parallel through 1...

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...

In this paper, a novel control approach is designed for surge instability in the compressor system using finite-time adaptive sliding mode scheme. The primary novelty of study lies development avoidance presence disturbance and uncertainty characteristic curve also throttle valve. Lyapunov method utilized to verify stability closed-loop system. performance presented compared against other metho...

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.

A new compressor product is introduced which fulfills the market need for a low cost, high efficiency, durable air conditioning and heat pump compressor for the 1.5 to 2.0 ton capacity range. ·A review of compressor technologies has indicated the optimum compressor for this application would incorporate the durability and versatility of a piston compressor while employing the cost and noise adv...

This paper presents the theoretical and experimental investigations on the transient stress of the suspension spring in a reciprocating hermetic refrigeration compressor. The torques acting to the compressor body of a multi-cylinder compressor and the transient vibration of the compressor body are analyzed over a wide range of start and stop operations. The dynamic stresses of the suspension sp...