Energy efficiency of water ring vacuum pumps

The issues of rational use of energy are relevant for various industries. The operation of vacuum systems is associated with high power consumption, the main link is the pumping unit. The energy consumption of the entire installation depends on the correct choice of pump parameters. A technique is described that makes it possible to compare different variants of pumping systems under operating conditions close to real ones. The following parameters were determined: productivity, power consumption of the ELRS-6 vacuum pump depending on the inlet pressure at different values of the rotor speed. The dynamics of pressure reduction in the working chamber over time for various pumps is presented. The dependences of the time to reach the required vacuum and the work expended on the rotor speed for different pumps are calculated. The following parameters were determined: the mechanical work expended and the rotor rotation speed at which the pressure in the working chamber will decrease to a preset value in a certain time of seconds during operation of one or more pumps. A method has been developed for selecting an option from one or more water ring pumps according to the criterion of energy efficiency.
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