Analysis of the design features of transformer heating elements in electrical complexes of decentralized heat supply

Abstract

The paper analyzes the design features of transformer heating elements used in electrical complexes of decentralized heat supply. Particular attention is paid to the dependence of the efficiency and reliability of the element on operating conditions, such as the properties of the coolant and the possibility of scale formation. Single-phase and three-phase designs with a sealed secondary winding are considered, as well as heating elements with a three-phase spatial magnetic circuit and a central tube for fluid circulation. It is shown that the proposed design solutions provide an increased heat transfer coefficient, uniform distribution of the thermal load and a high level of electrical safety. The results obtained indicate the feasibility of using such heating elements in decentralized heat supply systems to increase the efficiency and reliability of heat exchange devices.