Energy efficiency of electric boilers of autonomous individual heat supply systems
https://doi.org/10.22227/1997-0935.2025.7.1104-1112
Abstract
Introduction. Electric water boilers are one of the options for heat generators used in autonomous heat supply systems. Compared to traditional heat generators on hydrocarbon fuel, they are cheaper, easier to operate and install, and safer. In a number of regions of the country, electricity tariffs allow them to compete with traditional boilers in terms of economic indicators. The purpose of the work — to determine and compare the energy efficiency indicators of electric heat generators with different types of heating chambers with water and antifreeze coolants. To assess the possibility of starting the heat supply system from a supercooled state.
Materials and methods. The research is experimental in nature, the tests were conducted on the research stand of the “Arderia” plant. The characteristics of the energy efficiency of electric heat generators with a volumetric heating chamber with heating elements in contact with the coolant and a flow chamber of indirect surface heating were determined. Tests of starting the system in a freezer were conducted.
Results. The energy efficiency coefficients of the studied samples of electric heat generators were determined, amounting to an average of 93.5 % for volumetric heating chambers and 0.97 % for flow-type chambers. The components of heat losses of electric generators were classified. The use of antifreezes reduces the energy efficiency of heat generators by 2.1 %. The possibility of starting a heat supply system with an electric heat generator with a flow-type heating chamber from a supercooled state with a temperature of minus 16 °C was confirmed.
Conclusions. The results of the study showed significant advantages of electric heat generators with a flow-type heating chamber with indirect surface heating over thermal electric generators with a volumetric heating chamber.
Keywords
Supporting agencies: The authors thank the reviewers for their comments, both in terms of the style of presentation and the scientific and technical essence, which contribute to a deeper disclosure of the topic of scientific work.
About the Authors
A. L. Toropov
Engineering Center “April”
Russian Federation
Russian Federation
Alexey L. Toropov — Candidate of Technical Sciences, General Director — Chief Designer
13 Schelkovskoe shosse, Moscow, 105122
RSCI AuthorID: 1030472, Scopus: 58406665800
S. V. Sargsyan
Moscow State University of Civil Engineering (National Research University) (MGSU)
Russian Federation
Russian Federation
Samvel V. Sargsyan — Candidate of Technical Sciences, Associate Professor, Head of the Department of Heat and Gas Supply and Ventilation, Director of the Scientific and Educational Center “Heat and Gas Supply and Ventilation”
26 Yaroslavskoe shosse, Moscow, 129337
RSCI AuthorID: 429896, Scopus: 57204373040
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Review
For citations:
Toropov A.L., Sargsyan S.V. Energy efficiency of electric boilers of autonomous individual heat supply systems. Vestnik MGSU. 2025;20(7):1104-1112. (In Russ.) https://doi.org/10.22227/1997-0935.2025.7.1104-1112
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