E3S Web Conf.
Volume 186, 20202020 The 3rd International Conference on Electrical Engineering and Green Energy (CEEGE 2020)
|Number of page(s)||9|
|Section||Power and Energy Engineering|
|Published online||24 August 2020|
Methodology for Evaluation of District Heating Network Efficiency
University of Southern Denmark, The Maersk Mc-Kinney Moller Institute, Campusvej 55, 5230 Odense M, Denmark
2 EWII, TREFOR Varme, Kokbjerg 30, 6000 Kolding, Denmark
The definition of overall district heating network performance indicators is under-investigated in the literature. This study reviews existing methods of performance estimation and develops a convenient methodology for an array of district heating networks applied to a Danish case study. Performances of the networks with state-of-art pipe transmission coefficients are compared to older traditional pipes using an effective average approach. The reported efficiencies and analysis of contributing factors show, that a single parameter is not sufficient to compare large-scale district heating systems and a multiparametric analysis must be employed. The effective average total heat transmission coefficient is evaluated based on the Technical Evaluation Factor and a multivariate regression is performed on typical sets of network parameters: pipe type, pipe series, pipe age, and operational temperature. The developed methodology is applied to testing an array of geographically independent district heating networks, pointing to possible performance bottlenecks, and discussing potential remedies.
© The Authors, published by EDP Sciences, 2020
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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