The results of experimental studies of a radial fan, built a complete characterization on the basis of the data listed in the table confirm the theoretical concepts and calculations. Goal is to determine the total pressure created by the fan, its supply and power consumption for each test mode. Designed and built the experimental setup, the department "Electrical Engineering and Automation" RGSU, which is designed for aerodynamic testing of the fan,

Keywords: centrifugal fan, a complete characterization of the fan, flow, pressure, section, area, speed, power

  The article presents a method for the continuous monitoring of airflow in the ventilation system, that the department "Electrical Engineering and Automation" RGSU developed a method based on changes in the frequency and amplitude of the vibrations when the duct airflow. Designed and produced by the device based on piezo transducer prestressing. The principle of the device is based on the use of the frequency and amplitude of the vibrations of the air change rate of air flow. This method of continuous monitoring of air velocity in the duct registers change speed automatically and allows you to monitor the work of ventilation systems.

Keywords: microprocessor, continuous monitoring, automatic control, speed, air flow

The article provides the analysis of the operational cost of the systems of heating of a building with the use of низкопотенциальных sources of heat. Analyzed fuel economy with consideration of the operation of the heat pump and save operating costs.

 

Keywords: heat pumps, heat mine waters, the saving of operating costs