The main scope of this paper is to estimate the long-term impact of multiple-fuel use and plant renovation on a DH system water performance. The originality of this work is the application of this method for the complicated, branched CHP plant with a large heat output and high capacity, widespread in Russia. Suggested configuration for a renovation of a CHP plant supplied with steam includes main DH network feedwater line, a heat pump, low-temperature water conduit, electric boiler, and low-temperature conduit feedwater line. The heat pump and electric boiler need approximately 15% less electricity from the national grid for supplying the same amount of heat to the network. The fuel amount is reduced on average by 7% and a further reduction of 9% occurs if after-deaerator extraction is fully disabled. The drop in the costs is therefore on average 18% taking into account fuel costs of coal set to be half of the price of electricity. The steam alternative replaces flow-intensive water option, that is why it leads to a lower makeup, and this replaces more heat totally, that is why it is better than the existing case. The concept presented in this work is valid for any cold-climate region where alternative makeup methods are sought. Based on the idea proposed, a novel model of makeup system for central plant design and stability analysis was derived. The results presented in this paper may be used as input for future analysis.
|Number of pages||8|
|Journal||Transportation Research Procedia|
|Publication status||Published - 2021|
|Event||2020 International Scientific Siberian Transport Forum, TransSiberia 2020 - Novosibirsk, Russian Federation|
Duration: 25 May 2020 → 29 May 2020
Bibliographical noteFunding Information:
The reported study was funded by the Administration of Krasnoyarsk Krai and the Krasnoyarsk Krai Foundation for Support of Scientific and Technical Activity. This research was also supported by the Government of the Russian Federation under Project No. 860 (August, 8 2017 Decree). The Authors thank the Omsk District Heating Supply oC panym (Os‘m Rk TS’, JSC) of r a cooperation dan ink dly proidv ed inof ratiom .n The Authors would like to acknowledge the valuable comments and suggestions of the reviewers, which have improved the quality of this paper. The author also expresses gratitude to the unnamed editor who has proof-read and edited the text.
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Copyright 2021 Elsevier B.V., All rights reserved.