Network Temperatures and Flow Rate: Case Study of District Heating in Canberra, Australia
International Journal of Energy and Environmental Science
Volume 3, Issue 3, May 2018, Pages: 61-68
Received: Jul. 6, 2018; Accepted: Jul. 16, 2018; Published: Aug. 9, 2018
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Author
Stanislav Viktorovich Chicherin, Thermal Engineering Department, Omsk State Transport University, Omsk, Russia
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Abstract
The purpose of this paper is to highlight the relevance of district heating (DH) in the country where, in general, there is no such system and, specifically, to develop and implement a helpful approach for designing a DH network combining thermal and hydraulic considerations to simulate the energy behaviour of such network. The nonlinear model of the supply and return temperatures describes the dynamics of a DH system with an appropriate accuracy. The results of the generated scenarios are partial load values obtained for each category. The data on the daily heating power demand was transformed into an outdoor temperature dependence curve used to compute the flow rate for each of the scenario. Under the designed condition, the flow is determined and regulation approaches are elaborated. The resulting flow is quite stable. Taking into account the deficiencies of conventional evaluation for DH networks, this study excludes the hypothesis of constant outdoor temperature, and analyzes the influence of outside temperature on the heat losses and electricity consumption for DH networks based upon the state-space method. The obtained results are achieved without significant investments into a DH system just by adjusting and controlling temperatures and flow rates of a heat radiator circulating in the network.
Keywords
Demand, Flow, Thermal, Weather
To cite this article
Stanislav Viktorovich Chicherin, Network Temperatures and Flow Rate: Case Study of District Heating in Canberra, Australia, International Journal of Energy and Environmental Science. Vol. 3, No. 3, 2018, pp. 61-68. doi: 10.11648/j.ijees.20180303.12
Copyright
Copyright © 2018 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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