Screw dry vacuum pump.

Vacuum Gauge to Vacuum Pump Valve

CFD Simulation of a Dry Scroll Vacuum Pump Including Leakage Flows

One challenge for the numerical simulation of a dry scroll vacuum pump is the discretization of the chamber volume, which changes with time. In addition, the flow characteristics are very complex including the leakage flow caused by radial and axial gaps between the rotors and the housing. For engineers and designers it is imperative to understand the influence of such leakage flows on the effi...

A Case Study of Autoregressive Modelling and Order Selection for a Dry Vacuum Pump

Oil-free dry-vacuum pumps are prevalent in semiconductor plants worldwide today. The popularity of such pumps has grown over the years but little research has been done in the area of condition-monitoring of dry-vacuum pumps. Fault detection of one such pump through the use of AutoRegressive (AR) modelling technique and spectral analysis of vibration and acoustic data has been studied. The test...

Dry Screw Compressor Performance and Application Range

Screw compressors have the advantage of low mechanical vibration levels similar to those found in centrifugal compressors due their rotary motion. However, screw compressors are positive displacement machines with a working principle similar to reciprocating compressors, which gives screws some advantages compared to centrifugals, such as: • The suction volume flow and power consumption grow li...

Screw Compressors for Heat Pump Application