Comparison of District Heating Supply Options for Different CHP Configurations

Pavel Ruseljuk, Andrei Dedov, Aleksandr Hlebnikov, Kertu Lepiksaar and Anna Volkova ()
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Pavel Ruseljuk: Narva Soojusvõrk AS, Oru 2, 20203 Narva, Estonia
Andrei Dedov: Department of Energy Technology, Tallinn University of Technology, Ehitajate Tee 5, 19086 Tallinn, Estonia
Aleksandr Hlebnikov: Department of Energy Technology, Tallinn University of Technology, Ehitajate Tee 5, 19086 Tallinn, Estonia
Kertu Lepiksaar: Department of Energy Technology, Tallinn University of Technology, Ehitajate Tee 5, 19086 Tallinn, Estonia
Anna Volkova: Department of Energy Technology, Tallinn University of Technology, Ehitajate Tee 5, 19086 Tallinn, Estonia

Energies, 2023, vol. 16, issue 2, 1-14

Abstract: The article discusses the evaluation of potential heat production options for a large-scale district heating system in Narva (Estonia). Heat is currently generated at the Balti Power Plant’s CHP unit using local oil shale mixed with biomass. The CHP unit consists of two circulating fluidised bed boilers and a reheat steam turbine. According to the development strategy, the district heating system is expected to achieve carbon neutrality in the future. Various options and parameter variations should be analysed. The following scenarios were compared: (1) baseline scenario featuring an existing CHP extraction steam turbine; (2) alternative Scenario I featuring a CHP backpressure steam turbine; and (3) alternative Scenario II featuring a CHP gas turbine. To evaluate the above scenarios, a comprehensive energy/exergy analysis was performed, and economic indicators were calculated. The primary energy consumed, as well as the heat and electricity generated, were all taken into account. Based on this analysis, a scenario was selected using multiple-criteria decision-making that will improve energy efficiency and reliability of the system.

Keywords: district heating; CHP; efficiency; electrical and thermal loads; efficiency; exergy; heat; turbine; demand; scenario (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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