SU1665183A1 - Air-conditioning system with automatic control of supply air parameters - Google Patents

Abstract

The invention relates to air conditioning systems and improves the efficiency of the system by utilizing the heat of the outside air. Consistently along the air are the heat exchanger (TO) 1, the irrigation chamber 2, the thermostat 3 "dew point" tors, the heater 4, the fan 5 and the thermostat 6 supply air. Chamber 2 is connected to a water circuit 7 with a pump 8, a three-way control valve 9, supply, circulation, make-up, overflow and by-pass pipelines (TP) 10, 11, 12, 13, 14. THAT 1 and heater 4 are included in circuit 7 The output of TO 1 is communicated with the input of the heater 4. TP 14 is included in circuit 7 before the entrance and after the output of TO 1. A three-way control valve 15 is connected to the TP 10, 14 to TO 1 and communicates with the temperature regulator 6. The prohibitory-resolving device 17 is connected by an input to thermostats 3, 6, by an outlet to a valve 9 and a pump control unit 16 8. 1 sludge.

Description

The invention relates to air conditioning systems for the summer season and makes it possible to maintain a satisfactory heat and moisture composition of the supply air without using a special coolant for the second heating by utilizing the heat of the outdoor air.

The aim of the invention is to increase efficiency.

The drawing shows a diagram of an air conditioning system with automatic control of supply air parameters.

An air conditioning system with automatic control of the supply air parameters contains a heat exchanger 1, an irrigation chamber 2, a dew point temperature regulator 3, a heater 4, a fan 5 and a supply air temperature regulator 6 arranged in series with the air flow. The irrigation chamber 2 is connected to the water circuit 7 with a pump 8, a three-way control valve 9, supply 10, circulation 11, make-up 12, overflow 13 and bypass 14 pipelines, and heat exchanger 1 and air heater 4 are included in the water circuit 7. moreover, the output of heat exchanger 1 is communicated with the input of the air heater 4. The system additionally contains a three-way control valve 15, a pump control unit 16 and a forbidden-resolving device 17. The bypass pipe 14 is included in the water circuit 7 before and after the exit of the heat exchanger 1, an additional the re-entry control valve 15 is connected to the supply 10 and 11 bypass pipelines to the heat exchanger 1 and is connected to the supply air temperature regulator 6, and the forbidden-resolving device 17 is connected to the dew point and supply air temperature regulators 3 and 6 by the inlet, and the output to the main three-way control valve 9 and pump control unit 16.

The air conditioning system with automatic control of the supply air works as follows.

Outside air with a fan 5 is sequentially supplied in the air conditioning system through a heat exchanger 1, an irrigation chamber 2, an air heater 4 to a serviced room (not shown). Supply air humidity is controlled by the dew point method by maintaining a predetermined air temperature behind the irrigation chamber 2 by changing the temperature of the spray water supplied by the pump 8 through the water circuit 7. After the pump, water enters the irrigation chamber through the supply pipe 10, and is discharged through the circulation pipeline 11.

Excess water generated by condensation of moisture from the treated air and replenishment of cold water from the pipeline 12 are gravity removed from the drip tray (not shown) of the irrigation chamber 2 via an overflow pipe 13 to a refrigeration station (not shown), from where again the chilled water returns through the make-up pipe 12.

When the humidity of the supply air rises (the dew point temperature has increased), on the command of the temperature controller 3 of the dew point temperature, the main three-way control valve 9 opens towards the make-up pipe 12 of cold water and closes towards the circulation pipe 11 and exits the heater 4.

With a decrease in the supply air humidity (the dew point temperature has decreased ”), the regulation is carried out in the reverse order by decreasing the consumption of cold water from the make-up pipe 12 and increasing the consumption of heated water from the air heater 4, as well as from the circulation pipe 11.

The supply air temperature is controlled directly by the command of the thermostat 6, which changes the amount of water passing under the action of the pump 8 through the heat exchanger to heat it with outside air and for its subsequent use in the air heater 4. In the air heater 4, the supply air is heated to the required parameters after cooling (humidification) in the irrigation chamber.

When the supply air temperature rises, at the command of the thermostat 6, an additional three-way control valve 15 closes towards the inlet to the heat exchanger 1 and opens towards the bypass pipe 14, which leads to a decrease in the water temperature at the inlet to the air heater 4.

When the supply air temperature decreases, at the command of the thermostat 6, an additional three-way control valve opens towards the inlet to the heat exchanger 1 and closes towards the bypass pipe 14, which leads to an increase in the water temperature at the inlet of the air heater 4.

When the outside temperature drops significantly (for example, below 25 ° C) and the control valve 15 is fully open towards the heat exchanger 1, an end switch (not shown) is activated inside the control mechanism of the control valve 15 and the forbidden-permission device 15 is activated , which connects the supply air thermostat 6 to the control of the main 1C three-way control valve 9, disconnecting it from the control of the thermostat 3 dew points ”. This closes the access of cold water from the make-up pipe 12. When the 15-way control valve 9 is completely closed 15 in the direction of cold water, the control unit 16 turns off the pump 8 and the system continues to operate as a supply.

The proposed air conditioning system, compared to the known one, works with a single pump in a wide range of outdoor temperatures, which increases its efficiency.

Claims (1)

Formula tions An air conditioning system with automatic control of supply air parameters, containing a heat exchanger, an irrigation chamber, a dew point temperature regulator, and a heater, arranged sequentially along the air flow. a fan and a temperature regulator 5 of supply air, while the irrigation chamber is connected to a water circuit with a pump, a three-way control valve, supply, circulation, make-up, overflow and bypass pipelines, and the heat exchanger and air heater are included in the water circuit, and the heat exchanger output is connected to the air heater inlet characterized in that, in order to increase efficiency, the system further comprises a three-way control valve, a pump control unit and a forbidden authorization device, with a bypass the pipeline is included in the water circuit in front of and after the exit of the heat exchanger 20, an additional three. The bottom control valve is connected to the supply and bypass pipelines to the heat exchanger and communicated with the supply air temperature regulator, and the forbidden-decoding device 25 is connected to the inlet to the dew point and supply air temperature thermostats, and to the outlet with the main three-way control valve and pump control unit.