Water Ejector Vacuum System Pdf

The water jet eductor is a type of ejector which utilizes the kinetic energy of a pressurized liquid to entrain another liquid mix the two and discharge the mixture against a counter pressure. Ejectors of this type are used throughout industry for pumping and mixing operations. The first problem was a result of improper replacement of an intercondenser and the second was a result of.

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Two actual case studies conducted by service engineers on cvdu ejector systems show how to troubleshoot ejector problems.

Water ejector vacuum system pdf.

In general the diameter of the piping between the process and the ejector system must be at least as large as the suction connection in the first stage ejector. Liquid jet vacuum ejectors can extract gases and vapours and compress them. Ejectors vacuum systems chem process has been designing steam jet thermocompressors since decades and each unit is designed specifically to suit a customer s process and. Water re cycle system for vacuum pumps for the total reduction of effluent.

A vacuum ejector or simply ejector is a type of vacuum pump which produces vacuum by means of the venturi effect. 1 is a photo of an installed ejector at a cvdu. So for example the suction pres sure cannot be below 23 mbar 17 5 mm hg for a jet ejector with water as a. Water pressurized by a hydraulic pump as a motive fluid is used in the two phase ejector vacuum pump systems šarevski et al 2004 2009b and also in the concentrator thermo compression systems šarevski et al 2005a 2011a for compression of the water vapor from the evaporating to the condensing pressure.

Vacuum systems 113 vacuum systems 115 gdp1. In an ejector a working fluid liquid or gaseous flows through a jet nozzle into a tube that first narrows and then expands in cross sectional area. Application water jet eductors have numerous uses in the plant such. Also referred to as ejectors are devices for the conveyance compression or mixing of gases vapors liquids or solids in.

In the case of liquid jet vacuum ejectors the achievable suction pressure at zero load corresponds more or less to the vapour pressure of the motive liquid. The offered systems use water as the motive force and kinetic energy of water to entrain vapours and gasses. Ejector and condenser problems in vacuum ejector systems. All these ejectors can be installed at ground level or at any higher elevation and can be installed at water re circulation tank to minimize pressure drop.

Water vapor pressure table vacuum range saturated steam 15 abl5 water vapor temperature table vacuum range saturated steam 16 abl5. Vacuum piping paragraph 6 3 of the heat exchange institute s standards for steam jet vacuum systems 4th ed details the pro cedure for calculating pressure drop in vacuum systems. As per the suction pressure requirement the first stage ejector.