Modelling and experimental validation of a hot water supply substation
Bajsič, Ivan (Author), Bobič, Miha (Author)

URLURL - Presentation file, Visit http://dx.doi.org/10.1016/j.enbuild.2005.06.012 New window

The paper presents a mathematical model for the numerical simulation of a substation for the supply of hot water which operates without auxiliary energy. The introduced original mathematical model has been verified experimentally, enabling a direct comparison with real conditions. While the approach to the mathematical modelling is traditional, the main innovation is the selection and derivation of suitable mathematical models, which are able to deliver the results which are as close as possible to real conditions, thusenabling an excellent accordance of both models, i.e. the mathematical simulation and the test line results. The simulated system is modular to allow analysis of the influence of each parameter. The non-linear model was applied for the heat exchanger, while the temperature sensor has been modeled as the second order system to account for its heat conducting protective pocket. When modelling the valve, its dynamic characteristics have been considered, being an additional advantage over existing mathematical models. The reason for research is to optimize water heaters, a common solution for hot water services in Nordic countries.

Keywords:daljinsko ogrevanje, topla voda, matematični modeli, merilne verige, district heating substation, temperature senzor, valve, heat exchanger, numerical simulation, test line
Work type:Not categorized (r6)
Tipology:1.01 - Original Scientific Article
Organization:FS - Faculty of Mechanical Engineering
Number of pages:str. 327-333
Numbering:Letn. 38, Št. 4
ISSN on article:0378-7788
COBISS.SI-ID:8845083 Link is opened in a new window
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Record is a part of a journal

Title:Energy and buildings
Shortened title:Energy build.
COBISS.SI-ID:25395200 New window

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