The paper describes the design concept of a small, oilfree, reciprocating high pressure compressor which was particularly developed for NGV-applications (NGV = Natural Gas for Vehicles). It is field proven in several thousand installations in various parts of the world. The compressor head is also used in a small hermetically sealed compression unit for technical gases like N2, Air, Ar, He, H2,...

Hermetic rotary compressors are one of the most important components in air-conditioners and refrigerators since they control both the performance and noise level of these products. Noise and vibration control of hermetic compressors should start with the identification of their sources of noise and vibration since the noise sources within a compressor play a determining role in the noise radia...

Based on the development of numerical analysis techniques over the past decade, the engineer can easily model the internal flow conditions and vibration characteristics of turbomachinery. When focusing on vibration response of rotating blades, it is easy to predict the resonance frequency; however difficulty remains in the prediction of vibrational stress. The primary reasons include: The unste...

The rotating shaft is the key component of air compressor connecting bearing seat and turbine disk for hydrogen battery, its working reliability affects safety compressor.The energy battery disk, life compressor. performance analysis comparison typical structure an are carried out, which provides experimental data vibration lays a theoretical foundation relevant design enterprises.

Until now the rotating and oscillating imbalance in the hermetic compressor has been balanced to and greater or lesser extent, but in addition internal springs were added where this was expedient from a design viewpoint. It is clear, however, that the position of the springs is an important factor in the transmitted vibrations. Generally, it proves in this paper that for a single-cylinder compr...

In the present paper , dynamic characteristics of the pressure pulsation and heat exchange have been analyzed in cooler of reciprocating compressor. Through the analysis of energy balance for an heat exchange element , the differential equations are established for the heat exchange element. Effect of the pressure pulsation on heat exchange has been considered in the cooler of the compressor by...

Torsional vibration problems continue to occur in reciprocating engine and compressor installations. This is due in part to the fact that reciprocating equipment can produce significantly more torsional excitation than rotating machinery such as turbines, centrifugal compressors, and centrifugal pumps. The purpose of this tutorial is to raise awareness of torsional vibration problems that can o...