Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7122750 | Measurement | 2016 | 6 Pages |
Abstract
The measurement of physical parameters conducted on a central heat distribution network was used to determine heat loss using pipe dimensional analysis. All the developed models include all relevant physical parameters which are expected to have an impact on heat loss. The interdependence of these parameters is expressed as a function of similarity criteria. When creating a mathematical model, the so-called Buckingham Ï theorem is used. The model consists of the dependency of only two parameters, which greatly simplifies the currently-used procedure of calculation based on heat transfer theory. The proposed way of expressing heat loss is further interpreted in the article by two simpler modifications. In the simplest variant, the interdependence of dimensionless criteria is subtracted from the original diagram. The results presented in this article are valid for a diameter 125 mm (DN125) overhead network with insulation. The scope of the model was validated for ambient temperatures of â20 to +30 °C and a transported water temperature from 40 to 70 °C.
Related Topics
Physical Sciences and Engineering
Engineering
Control and Systems Engineering
Authors
Mária Äarnogurská, Miroslav PÅÃhoda, Michal PuÅ¡kár, Michal Fabian, Romana Dobáková, Michal KubÃk,