METHOD AND DEVICE FOR MEASUREMENT OF HEAT CONSUMPTION Russian patent published in 2018 - IPC G01K17/06 

FIELD: instrument engineering.

SUBSTANCE: invention relates to instrument engineering and can be used to measure heat consumption, for example, in heating networks. Method for measuring heat consumption, including additional heating of the coolant, comparison of the coolant temperature before passing the heat exchanger and the temperature of the coolant after heating, measuring the power supplied to heat the coolant. Moreover, an additional part of this stream is extracted from the coolant flow passing the heat exchanger and its heating is carried out, measure the flow rate of the coolant through the heat exchanger and the flow rate of the heated part of the coolant flow, the power of the additional heating of the coolant is changed, so that the difference in the temperatures of the coolant before the passage of the heat exchanger and the coolant after heating to be close to zero. In this case, the heat consumption in the heat exchanger is defined as the ratio of the measured coolant flow rates, multiplied by the value of the measured power supplied to heat the coolant. Also, a device for measuring heat consumption, comprising a heat exchanger, coolant source and drain pipes, a heater, an electric power meter, a temperature comparison unit is declared. Moreover, the device is additionally equipped with a coolant flow divider, the first output of which is connected to the coolant drain pipe, the control unit, the computing device, two measures of coolant flow rate, the first of which is connected in series with the heat exchanger and the inlet of the coolant flow divider, and the second one is connected in series with the heater between the second outlet of the coolant flow divider and the first input of the temperature comparison unit, in which the second input is connected to the coolant source, the first output is connected to the input of a circuit consisting of a series-connected flow meter and a heat exchanger, the second output is connected to the coolant drain pipe, the computing device is connected to the outputs of the electric power meter and the flow meter, the control unit is connected to the computing device, the temperature comparison unit and through the electric power meter to the electric input of the heater.

EFFECT: increasing the accuracy and reliability of the results obtained, reducing additional energy costs.

5 cl, 4 dwg