冰箱压缩机振动噪声特性的理论与试验分析-theoretical and experimental analysis of vibration and noise characteristics of refrigerator compressor.docx,首先,在分析冰箱往复式压缩机的噪声源识别和传递路径的基础上,针对正常压缩机及去除气动元件的压缩机分别进行了
When a hybrid compressor starts being driven by an electric motor, an electric current of a capacity control valve is applied at an initial control electric current SS that is greater than a control e
Invention Formula A fenced type compressor, comprising a fenced type body, a compression mechanism located in the body and including a cylinder and a piston capable of reciprocating in the cylinder, an electric motor including a stator, a rotor and an output shaft directed vertically from the rot...
In future work, when the diagnostic rate of the compressor matches the beat of the production line, the addition of different kinds of sensor information, such as current signal and sound signal, can be considered for integrated analysis. Adding different sensor information will improve the ...
The formula for calculating the polytropic efficiency is given by Equation (16) using the compressibility functions X and Y proposed by Schultz. To evaluate the thermodynamic performance of the centrifugal compressor according to the operating point, we can calculate the polytropic work Wp (N·m/kg...
Understanding the power consumption on the work cycle of compressors and its power losses can contribute to improving the performance. The operation of refrigerator compressor can be described by the pressure volume indicator diagram, which shows the pressure variation in the cylinder as a function of...
In this work, a piezoelectric sensor, PZT-5H is attached to a 3D printed and custom-made mounting to be placed at an air conditioning condenser unit, to harvest vibration energy. The configuration of the harvester is non-intrusive, in which the harvester did not intrude into compressor unit...
Results from the examinations of pressure pulsation influence demonstrate that discharge resonance requires more specific work than suction resonance in the same harmonic; in the suction system, the first harmonic response reduces the mass flow rate but significantly increases specific work, and the ...
Results from the examinations of pressure pulsation influence demonstrate that discharge resonance requires more specific work than suction resonance in the same harmonic; in the suction system, the first harmonic response reduces the mass flow rate but significantly increases specific work, and the ...