SU1629702A1 - Method of automatic facade microclimate control on the premises of a building - Google Patents

Abstract

The invention relates to ventilation and air conditioning. The aim of the invention is to reduce the flow of coolant. The device for implementing the method of automatic face-to-face microclimate control in buildings contains sensors 1 and 2 of air temperature in the rooms of the southern and northern facades, connected respectively to controllers 3 and 4,

Description

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also connected with sensors 5 and 6 of the outdoor temperature, sensors 7 and 8 of the temperature of the direct heat carrier and sensors 9 and 10 of the temperature of the return heat carrier. Regulators 3 and 4 are connected to drives 11 and 12 of valve 13 and 14, installed in the pipeline 15 for supplying the direct coolant to which the heat exchangers 16 and 17 of the rooms of the north and south facades of the building are connected. A circulation pump 19 is connected to the return line 18.

and a mixing pump 20, which, via a check valve 21 and control valves 22 and 23, with actuators 24 and 25, is connected to the pipeline 15 of the direct heat carrier. A pressure difference sensor 26 of a wind pressure acting on the south and north facades of the building is connected to an integrator converter 27, which is connected to the actuators 24 and 25 of the control valves 22 and 25 connected to the corresponding regulators 3 and 4, temperature regulators 28 and 29. 23. 1 Il.

The invention relates to ventilation and air conditioning.

The purpose of the invention is to reduce the consumption of coolant

The drawing shows a schematic diagram of the device for implementing the proposed method.

The device for automatic field control of the microclimate in the premises of the building contains sensors 1 and 2 of air temperature in the rooms of the south and north facades (not shown), connected respectively to controllers 3 and 4, also connected with sensors 5 and 6 of the outdoor temperature. air, sensors 7 and 8 of the temperature of the direct heat carrier and sensors 9 and 10 of the temperature of the return heat carrier. Regulators 3 and 4 are connected to actuators 11 and 12 of valves 13 and 14 installed in the pipeline 15 for supplying the direct heat carrier to which the heat exchangers 16 and 17 of the rooms of the northern and southern facades of the building are connected. A circulation pump 19 and a mixing pump 20 are connected to the return pipe 18, which, via the check valve 21 and the control valves 22 and 23, with the actuators 24 and 25, is connected to the pipe 15 of the direct heat carrier.

A pressure difference sensor 26 of the wind pressure acting on the south and north facades of the building is connected to an integrator converter 27, which is connected to the actuators 24 and 25 control valves 22 and 25 connected to the appropriate regulators 3 and 4, temperature regulators 28 and 29. 23.

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A device for implementing the method of automatic frontal control of the microclimate in the premises of a building operates as follows.

The signals from temperature sensors 1 and 2, proportional to the current values of air temperature in the premises of the southern and northern facades of the building, are sent to controllers 3 and 4, in which the signal is determined that is proportional to the average value of the air temperature in the room from the southern and northern facades. , comparing the average value with the set point and generating a control signal to the actuator 11 or 12 valves 13 and 14, which change the flow rate of the direct coolant entering the heat exchangers 16 and 17 of the rooms south or north th facade of the building.

At the same time, from the sensors 5 and 6 of the outdoor temperature and from the sensors 7.8 and 9.10 of the direct and return heat carrier temperatures, the controllers 3 and 4 receive signals proportional to the current values of the outdoor air temperature, direct and reverse heat transfer fluids. Regulators 3 and 4 process these signals and form a control signal at actuators 11 and 12 of valves 13 and 14, which accordingly change the flow rate of the direct heat carrier. If there is a pressure difference between the wind pressure acting on the northern and southern facades of the building, there is a corresponding change in temperature in the premises of the building. In order to eliminate the consequences of the inertia of the operation of the regulators 3 and 4 through the valves 13 and 14 on the change in the flow rate of the coolant, the sensor 26 of the differential pressure of the wind head was introduced into the circuit.

If the pressure of the wind pressure is exceeded from the northern facade of the building, the corresponding signal

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positive polarity from the converter Q carrier entering the heat exchanger-integrator 27 is fed to the controller 29, where it is algebraically summed with the control signal of the controller 4. From the controller 29, the signal goes to the actuator 25 of the valve 23, covering it and thereby reducing the flow rate of the return heat carrier, which is admixed to the direct heat carrier, advancing into the heat exchangers 16 of the premises of the northern facade of the building. This effect on valve 23 is carried out earlier than the impact on valve 14 from the controller J4, since the sensor 26 of the pressure difference between the wind pressure perceives the impact of the wind pressure before sensor 1 perceives the change (the temperature change in the northern facade of the building arising in the result of the change in pressure of the wind pressure.

At the same time from the sensor

26 through converter integrator

27, the regulator 28 receives a negative polarity signal, which is summed algebraically with the control signal of the regulator 3. The resulting signal from the regulator 28 acts on the actuator 24 of the valve 22, opening it slightly and increasing the flow rate of the return heat carrier mixed into the direct heat carrier entering heat exchangers 17 rooms -and the southern facade of the building. If the pressure of the wind pressure is exceeded from the southern facade of the building, the microclimate is automatically controlled in the reverse order.

the premises of the northern and southern facades, and the temperature of the return coolant coming out of the heat exchangers of the latter,

15 the subsequent formation of an appropriate controlled signal to change the flow rate of the direct coolant from the measured values of temperatures, maintain the desired averaged temperature in the premises of the northern and southern facades at the required level and control the temperature difference between the direct and reverse heat transfer fluids for the northern and southern garden gardens 25 building depending on the outdoor temperature, and before the direct coolant enters the heat exchangers of the premises of the north and south facade An adjustable heat transfer medium is added to the direct heat transfer fluid, characterized in that, in order to reduce air temperature fluctuations in the northern and southern building facades and to reduce the heat carrier flow, the pressure difference of the wind head pressure is also measured (valid depending on the size and sign of the measured pressure difference of the wind pressure algebraically summarize the latter with the control signal and, according to the resulting 45 tiruyuschemu signal controlled reverse flow of the heat medium, blend to a forward coolant prior to feeding the latter in heat exchange -apparaty Improvement sever50 Nogo and south facades.

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formula of invention

A method of automatic frontal control of the microclimate in the premises of the building, including measurement of the average air temperature values in the northern and southern facades of the building, the outside air temperature, the temperature of the direct heating apparatuses of the northern and southern facades, and the temperature of the reverse heat exchanger coming from the heat exchangers devices of the latter,

the subsequent formation of an appropriate controlled signal to change the flow rate of the direct coolant from the measured values of temperatures, maintain the desired average temperature in the rooms of the north and south facades at the required level and control the temperature difference between the forward and reverse coolants to place the north and south facades of the building depending from the outdoor temperature, and before the direct heat carrier enters the heat exchangers of the premises of the northern and southern facades of the rear They carry out controlled mixing of the return heat carrier to the direct heat carrier, characterized in that, in order to reduce fluctuations in air temperature in the rooms of the north and south building facades and reduce the flow of the heat carrier, the pressure difference of the wind pressure is measured as well (pressure on the north and, depending on the size and sign of the measured pressure difference of the wind pressure, algebraically summarize the latter with the control signal and the resulting resultant mu signal controlled reverse flow of the heat medium, blend to a forward coolant prior to feeding the latter in heat exchange -apparaty Improvement north and south facades.

Claims (1)

Claim. ·. A method for automatically adjusting the microclimate in the building’s premises, including measuring the average temperature in the rooms of the north and south facades of the building, the temperature of the outside air, the temperature of the direct heat carrier entering the heat exchangers of the rooms of the north and south facades, and the temperature of the heat carrier returning from the heat exchangers apparatuses of the latter, 'the subsequent formation of the corresponding controlled signal to change the flow rate of the direct coolant according to the measured temperature values, maintaining the set average temperature in the rooms of the north and south facades at the required level and regulating the temperature difference between the direct and return coolants for placing the north and south facades of the building depending on the outdoor temperature, and before the direct coolant enters the heat exchangers of the rooms of the north and southern façades, resulting from changes in wind pressure. At the same time from the sensor 26 through an integrator converter 27 to the controller 28 receives a signal of negative polarity, which is algebraically summed with the control signal of the controller 3. The resulting signal from the controller 28 acts on the actuator 24 of the valve 22, opening it and increasing the flow rate of the return fluid mixed with the direct flow to the heat exchangers 17 of the south facade building. In case of excess pressure of the wind pressure from the southern facade of the building av. the climate control is carried out in the reverse order. Nii carry out the controlled mixing of the return heat carrier with the direct heat carrier, characterized in that, in order to reduce the air temperature fluctuations in the rooms of the northern and southern facades of the building and to reduce the coolant flow rate, they additionally measure the value of the pressure difference of the wind pressure acting; to the north and. the southern facades of the building and depending on the magnitude and sign of the measured difference in pressure of the wind pressure, the latter is algebraically summed up with the control signal and the resulting heat signal is used to control the flow rate of the return heat medium mixed to the direct heat transfer medium before the latter is supplied to the heat exchangers of the premises of the northern and southern building facades.