| 摘要 |
FIELD: heat supply. ^ SUBSTANCE: method comprises connecting the heat exchanger to the heat supply system so that, when the fan for supplying hot air to the heat exchanger is shut down, the heat-transfer agent is supplied from the return pipeline rather than from the supplying pipeline of the heat supply system. The device comprises heat exchanger provided with supplying and discharging pipelines connected with the supplying and return lines of the heat supply system, respectively, pipeline that connects the supplying pipeline and the return main line of the heat supply system, fan with the electric motor, and three-phase circuit for energizing the electric motor. The device additionally has first end switch with normally closed contacts and second end switch with normally open contact, intermediate relay, and three-way ball cock mounted in the supplying pipeline upstream of the heat exchanger. ^ EFFECT: reduced consumption of heat-transfer agent. ^ 3 cl, 3 dwg |
