Mathematical Model and Computer Program for Calculating Energy Losses of Friction at Ring-Type Water Networks

Kire Popovski, Cvetanka Mitrevska, Vangelce Mitrevski, Igor Popovski, and Blagoj Ristovski

University “St. Kliment Ohridski”, Faculty of Technical Sciences, Bitola, Former Yugoslav Republic of Macedonia

Abstract: A computer program has been made to reduce the calculation time and to increase the accuracy of the calculation with no additional cost. The program does not require previous experience and advanced computer knowledge to operate it. There are two types of water supply networks, branched and ring-type. Ring type consists of a series of closed rings surrounding the consumers and supply them with water through sections. This type of water supply networks has an advantage over branched type because they do not require stopping of water in the entire network in a case of exclusion of certain parts of the network. When all input parameters are known, it is necessary to calculate the diameters of all sections and meet the required pressure drop in each of them.

Key words: ring water supply networks