Optimizacija vročevodnega omrežja in vpliv vodnega kamna na prenos toplote grelnih površin : doktorska disertacija
Hot water network optimisation and water scale influenece on heat transfer of heating surfaces : doctoral dissertation

slovenian

doktorska dela

2009

energetic   heat transfer   hot water network   nonlinear programming   optimisation   rational use of energy   washing machine heaters   washing machines   water scale

Univerza v Mariboru, Fakulteta za kemijo in kemijsko tehnologijo

The doctoral dissertation consists of three substantive wholes, where solutions that can contribute to rational use of energy and the reduction of harmful effects on the environment are presented, aiming at goals, which are the priority of world energy and environmental policies. Additionally, the statistical data of greenhouse gas emissions and suggested measures for their reduction are presented. Furthermore, flow - pressure conditions of district heating systems are researched. Also, with the variation of influential parameters in optimization model the impact on the course of optimal tree ways in loopy networks are analyzed. The water scale morphology is presented in more detail. Its most common component is calcium carbonate in aragonite or calcite shape. Some experiments were conducted for the evaluation of water scale precipitation on heaters of boilers for hot water and on washing machine heaters. The effect of divalent ions on crystal structure of water scale is analysed and the evaluation of heat transfer reduction because of scale deposits on heaters from different materials is given. A suggestion for an optimal installation of heaters and the shape of vat is made for assuring well water turbulence and less scale deposits.

07.08.2023