New Techniques and Technologies in Mining.

Abstract

The paper deals with energy efficiency of water supply regulation in different applications: water supply, heating and cooling systems etc. Each case is characterized by a set of requirements to supply and head pressure level. Two major approaches for supply regulation are compared: throttling and pump speed regulation. It is shown that variable speed electric drive application is not always expedient and in some cases can bring no significant cost benefit. Parallel operation of several pumping units is also examined. Recommendations for pump installations’ parameters selection, such as regulation range