Air conditioning system and method

FIELD: air conditioning aids.

SUBSTANCE: method of air conditioning is based upon mixing internal and external air, cleaning, heating and moisturizing. Moisturizing and cleaning is performed simultaneously with mixing in twisted flux. Mixing is made in proportion being necessary for achieving required temperature. Method includes cleaning, moisturizing, cooling, drying and heating of air. Before putting thermal parameters in balance the twisted flux is created where cleaning and moisturizing is made; drying is conducted by means of cooling till getting due point. Air conditioning system has fan, mixing chamber, regulating valves, control devices provided with detectors, air cooler, air heater and sprinkling system. Mixing chamber is made in form of cyclone-type mixer and is matched with sprinkling system. Efficiency of heat and mass exchange is improved due to sprinkling air by fluid inside twisted flux together with reduction in aerodynamic resistance of system.

EFFECT: improved efficiency of operation.

6 cl, 2 dwg

 

The invention relates to means and methods of air-conditioning and can be used to create the necessary air parameters as in the production process buildings, and residential buildings.

Currently, special attention is paid to methods of preparation of air on the basis of energy-saving technologies. These include the use of natural sources of heat and cold. This invention is directed to improving the efficiency of cold outdoor air and heat air generated by manufacturing processes.

Analysis of existing methods and air conditioning systems showed their lack of effectiveness.

There is a method of conditioning air provided by the air conditioning system (see A.S. USSR №400780, CL F 24 F 5/00, publ. in BI No. 40, 1974), is intended to prepare the necessary parameters of the air in technological areas with excessive heat. In this way the necessary parameters reach by air cooling, dehumidification and humidification internal recirculation air, and when the temperature of external air is less than the inner, the cooling air is shut off and the desired temperature and dehumidification of indoor air obtained by mixing n the outer and inner air.

A known air conditioning system that implements the specified method of air conditioning, contains the fan, the mixing chamber of outside and recirculated air control valves with actuators and spray chamber, is connected by piping with the pump, which supplies cold water and recirculation water from the tray cameras, sensors, connected to the actuating mechanisms.

In this air conditioning system, when the outside temperature is higher than the internal temperature, outside air can be terminated automatically under the action of the regulating valve, and the internal recirculation air is cooled by cold water in the irrigation chamber. When the outdoor temperature is lower than the internal temperature, the valve of the outdoor air is opened and cold water flow stops. In this case, the cooling and dehumidification of indoor air is achieved due to its mixing with the outside air.

The disadvantages of this method and the air-conditioning system that implements this method is that when changing the relative humidity of outside air during the day, its moisture after mixing with internal air remains continuous in the work of irrigation camera on recirculatio the Noi water, that does not align to the fluctuations in the humidity of indoor air. In addition, the lack of air heater does not provide the necessary temperature rise of the air in the technology room until spontaneous increase from technological processes taking place in the room.

More perfect from the standpoint of maintaining the required air parameters is known a method of air conditioning made for a prototype (see RF patent №2162572, CL F 24 F 3/14, F 26 21/00, publ. in BI No. 3, 2002). The way taken by us for the prototype includes the following operations: mixture of external and internal air, cleaning, cooling, dehumidification, heating and humidification internal recirculation of air throughout the year, and when the outside temperature is less than or equal to the supply air temperature (tdrugtp), artificial cooling off, and the temperature and dehumidification reach due to the mixing of external and internal air purification, heating and humidification.

The temperature of the mixed air support Autonomous below the temperature required for the process space, which is called the supply air temperature (tcm=tp).

This method of air conditioning Rea is isawan in the air conditioning system, which is represented as a variant implementation of the method, and taken as a prototype. A known air conditioning system contains a fan, a mixing chamber external and internal recirculation air filter air purifier, control valves with actuators, instruments, control sensors, air cooler, air heater and the spray chamber.

When the outdoor temperature is below the temperature of the supply air valve outdoor air is automatically opened and the outside air is mixed with the internal air in the mixing chamber and the cooler is turned off. After the mixing chamber, the air temperature is below setpoint temperature technological facilities. When further moving air passes through the filter, and then is heated in the heater until the temperature of the process areas and, as necessary, moistened in the irrigation chamber. Thus, the mixing chamber prepares the air only temperature and below the value necessary for technological facilities.

If the outside temperature is higher than the supply air temperature, the valve shuts off the supply of outdoor air, and the cooler is included for lowering the temperature to the level of p is tochnogo air, followed by heating in the heater and moisture into the irrigation chamber to air parameters of the technological premises.

The disadvantages of this method and the air conditioning system is that the mixing chamber and the air cooler in the period of their work to cool the internal air to the supply air temperature, i.e. lower than is necessary for technological facilities. This heater must ensure continuous heating of air by several degrees to the temperature level of technological areas, which leads to a large flow. In addition, low supply air temperature, obtained after the mixing chamber, compared with the desired temperature, it is not possible to use a higher outdoor temperature. It is important to consider also that the relative humidity of the outside air during the day in a wide range, and the mixing chamber in a known way air conditioning prepares the air only temperature due to changes in the supply of outdoor air. This leads to greater fluctuations in the relative humidity of the air downstream of the mixing chamber and inefficiencies in the camera after irrigation of the stove, which does not fully aligns fluctuations in humidity and introduces fluctuations in temperature due to the evaporative effect of the sprayed water. These shortcomings are particularly appear the tsya, when you need to prepare the air in the technological space rassloenii cabinets dough pieces, in which the temperature change within 35-40 degrees Celsius and a relative humidity of 60-80%. In this case, the outside air can be used all year round, and the mixture should provide a stable parameters of air temperature and humidity directly to technological areas with excessive heat.

The present invention is to increase the efficiency of heat and mass transfer processes and reduce energy consumption for air using external air.

To perform a specified task in the method of conditioning air, comprising a mixture of external and internal recirculation of the air flow, cleaning, cooling, heating and humidification, the mixing of the air flow is carried out in the proportions needed to achieve the desired temperature of the air in the room, when the mixture flows create a swirling flow of air which are cleaning and moisturizing mixture of air and obtaining humidity required values.

To perform a specified task in the air conditioning system containing the fan, the mixing chamber external and internal recirculation air filter is clean air, control valves with actuators, instruments, control sensors, air cooler, air heater and the spray chamber, the mixing chamber is made in the form of a cyclone mixer of the type with cylindrical body, to which are fed the ducts for outdoor and indoor air, and is equipped with an irrigation system of pipelines with the spray liquid nozzle.

The essence of the proposed method of air conditioning is that simultaneously with the mixing of outside and inside air in a swirling flow serves irrigating fluid is carried out with clean air. This combination of activities helps to prepare the air immediately upon mixing of the air flow as the temperature and humidity of air parameters required for the premises. Moreover, the regulation is proportional to the ratio of the number of external and internal air, and the supply of irrigating liquid is carried out automatically by means of the wirings with the Executive mechanisms. The supply of irrigating fluid by mixing air flows substantially increases heat and mass transfer in the best crushing of fluid particles in a turbulent flow of air and, consequently, increase the contact surface of sprayed liquid with air. In ex the contrast method, air-conditioning, taken as a prototype, when the air is cooled by mixing below the indoor air temperature, and then warmed up a few degrees to the temperature level of technological areas and moisturize in the proposed method the temperature and humidity of indoor air is brought to the required parameters in the mixture. Such preparation allows air to maintain the temperature and humidity of the internal air with simultaneous purification by mixing that ensures the use of outdoor air at higher temperatures and in the summer season, when the condition of tdrugtwew.

Figure 1 shows the diagram of operations performed in the proposed method, air-conditioning.

Figure 2 diagram of the air conditioning system operating on the proposed method.

The way the air conditioning consists of the following operations. Provided that the ambient temperature is below or equal to the temperature (tdrugtwewperform the following sequence of operations: mixture of external and internal air in a swirling flow, drainage, wetting and cleaning the internal air mixing, heating of the air.

Under the condition that the outdoor temperature is higher than the temperature in the morning (t drug>twew), perform the following sequence of operations: wetting and cleaning of indoor air in a swirling flow, artificial cooling and dehumidification, heating of the air.

The specified sequence of operations performed as follows.

When the outside temperature is below the indoor air temperature to produce a mixture in a swirling flow so that the internal air temperature after mixing becomes the desired value. Due to the fact that when the mixture is heated cold outdoor air from its contact with the warm internal air and result in a decrease in the relative humidity of the mixture of air, you must governanee mixture, which is carried out by mixing 1 through irrigation mixture of air and liquid 2. Thus, when mixed provide the required values of indoor air temperature and humidity to room 3. The ratio of external and internal air flows when mixed set automatically by means of control valves 4, 5, and release excess air from the room 3, the valve 6. Moreover, the magnitude of the valve opening 6 is the same as the valve 4. The circulation of internal and external flows of air in the mixture, and the supply of trained air 3 produce blower adjust the torus 7. Refrigeration 8 in this case is disabled.

Heating of the air 9 is used in the initial training of air if the room temperature is 3 less than the specified value, or when it is reduced in the process of circulation of internal air and even when reducing the supply of outdoor air valve 4 is not increased. Maintaining a given level of temperature by heating 9 produced automatically.

For preparation of internal air with low humidity, the temperature of the mixed air get lower than the desired room 3, big flow of external air, and followed by heating the mixture of air to room temperature 3 reaches the desired value of the relative humidity. While the degree of dehumidification of the air depends on the level of lowering the temperature of the mixture of air. At the same time carry out a condition where the outside temperature must be lower or equal than the required temperature of the mixture of air (tdrugtsee d).

Unlike the prototype, the temperature of the mixture is reduced not by 2-3 degrees Celsius, and bring up the level of obtaining the necessary air drying, and mixing air with simultaneous hydration reach receipt of the initial mixture, aligned as temperature and humidity, and subsequent heating to ensure Ecevit obtaining the necessary air parameters.

When the outdoor temperature is above the temperature of the inner or higher than the temperature of the mixture of air flow outside air shut off valve 4 and circulates only inside air under the action of the fan 7 in the open valve 5 and closed 6. In this case, artificial cooling air 8 support not only the given temperature 3, but reach the required dehumidification of indoor air due to its deeper cooling in combination with a subsequent heat 9 to a predetermined temperature of the room 3. Governanee internal air irrigation 2 to carry cooling 8, as when irrigation is lowering the temperature and reducing the duration of cooling 8.

However, in the case of the preparation of the air space rassloenii cabinets at a temperature of 35-40 degrees Celsius and a relative humidity of 60-80% in accordance with the inventive method, the outside air can be used throughout the year in the absence of artificial cooling 8.

The air conditioning system, presented in figure 2, consists of a mixer cyclone-type 1 located in the upper part of the irrigation system 2. In the mixer 1 is directed internal air 3 and the outside air intake outside 3. Moreover, the ratio of the giving of the supplied air flows into the mixer 1 is supported automatically by means of control valves 4 and 5, installed in ducts external and internal air. Excess air removed from the space 3 through the valve 6. The mixture of air from the mixer 1 output by the fan 7, which pulls the air through the cooler 8, the heater 9 and the throttle valve of the flow of conditioned air 10, and then sent into the room 3, where the temperature sensors 11 and humidity 12 air. Sensors the signals respectively to thermostat 13 and viagrahoustonup 14. The controller 13 automatically maintains the desired room temperature 3 by controlling the actuators 15, 16, 17 of the control valves 4, 5, 6, or operation of the air cooler 8 through the actuator 18 and the heater 9 by means of the actuator 19. Wagerelated 14 automatically maintains desired humidity of the room 3 through the fluid in the irrigation system 2 through the solenoid valve 20, or through the inclusion of the evaporator 8 through the actuator 18 in dry mode air.

The outdoor temperature measured by the sensor 21, the controller 22, which when the temperature of the outdoor air is above the temperature of the internal air-to-close valves 4, 6 and opens the valve 5 by means of the actuators 15, 16, 17. To obtain low relative to what agnosti air 3 installing additional temperature sensor 23 with thermostat 24 in front of the heater 9, which optionally controls the control valves 4, 5, 6 instead of thermostat 13.

The air conditioning system to implement the proposed method of conditioning works in the following way. When starting the fan 7, the negative pressure from the suction transmitted to the mixer 1. In this case, if the outside temperature is higher than the internal air temperature, the temperature controller 22 with the sensor 21 switches the controller 13 from the sensor 11 to control the air cooler 8 through the actuator 18 and closes the valve outdoor air 4, and the valve internal air 5 opens. In this position of the valves in the mixer 1 includes only the inside air through the valve 5. If the temperature of the process room 3 at the beginning of the process cycle is lower than it is set by the controller 13, the controller 13 includes an electric heater 9 through the actuator 19, which controls the temperature of the space 3 to the set. If room temperature 3 above adjusted by the temperature controller 13, it includes a cooler 8 through the actuator 18, which reduces the room temperature 3 to a predetermined value. In this scenario, when the humidity of the air is high, then the system switches to control viagragelee the om 14 with sensor 12, if needed, lowering the humidity of the air leaving the cooler 8 in the work until, until the condensation and precipitation of excess moisture. As the relative humidity decreases to a predetermined value (drainage). In this case, the equalization of the temperature of the air in the room 3 is supported by the work of the heater 9. Insufficient humidity of indoor air wagerelated 14 includes a fluid flow in the irrigation system 2 through the solenoid valve 20. Thanks to the sprayed liquid, the internal air is humidified in the mixer 1, at this time, the air cooler 8 disabled wagoregeregom 14 (hydration).

When the outdoor temperature is lower than the inside air, the controller 22 switches the controller 13 to the control valves 4, 5 by means of the actuators 15, 16 and the cooler 8 disables. In this case, the cooling and dehumidification of indoor air 3 is due to the outside air, which, mingling with the internal air is heated and reduces its relative humidity. Maintenance of the set temperature of the internal air is carried out by means of automatic determination of the ratio of the supplied air flows into the mixer 1 control valves 4, 5 through the actuators 15, 16. Excess air from the room vivodina through the control valve 6 with the actuator 17. Prepared according to the temperature of the mixture doublesneeze in the mixer 1 by spraying liquid irrigation system 2, and then is supplied by the fan 7 in room 3. When the temperature of the air in the room 3 at the beginning of the process cycle is lower than it is set by the controller 13, the valve 4 is closed and valve 5 is opened and turns on the heater 9, which raises the air temperature to the set point, and then turns off. Then again opens the valve 4 and valve 5 is covered and the temperature of the mixture of air again supported by means of the control valves 4, 5. Air purification is carried out in the mixer cyclone-type 1 guarding the impurities at the bottom, and then they are displayed in drains through drain irrigating fluid.

At high humidity of the air leaving the premises 3 and insufficient drainage him outside air, extra temperature sensor 23 with the regulator 24, which will take over the control of the valves 4, 5, 6 instead of the sensor 11, providing a lower temperature of the mixture due to the greater inflow of outside air. Then air mixture is further processed in the heater 9 to the temperature specified for areas 3, will get a lower value of relative humidity. Dehumidification air mixture defined what is the difference between the temperature before the heater 9, installed on the secondary regulator 24, and the temperature is set to room 3 on the slider 13.

The presence of the mixer cyclone-type 1 allows to intensify heat and mass transfer at the expense installed in the upper part of the irrigation system that provides a spray of liquid in a turbulent swirling flow of air. As a result of this interaction of air and spray liquid is the best crushing of the particles of a liquid and increase of the surface of interaction between the two environments. In addition, the proposed air conditioning system provides separation of impurities from the pure air in the mixer, which reduces the number of elements of the system and the energy system (excluded filter air purifier and Luggage wetting). The practical implementation of the proposed air conditioning system showed that the use of the mixer cyclone type with an installed irrigation system can reduce the flow of irrigating fluid during the same passage of the conditioned air in the 2.5-3.0 times, and to reduce the aerodynamic resistance of the system due to the lack of air filter up to 500 PA and due to the lack of camera humidification up to 400 PA. Using the one-step method of preparation of air, i.e. receiving conditioned air at once th the mixer, reduces energy consumption for heating air, thus obtaining the same parameters of conditioned air with a flow rate of 3000 cubic meters/h installed electrical capacity of the fan motor of the air conditioning system is reduced by reducing the aerodynamic resistance of up to 2.5 kW and installed capacity of the heater from the reduction of energy consumption for heating of the air is reduced to 6.0 kW.

1. The method of conditioning air, comprising a mixture of external and internal flows of air cleaning, humidification, heating, characterized in that the mixing of the air flow is carried out in the proportions needed to achieve the desired temperature of the air in the room, when the mixture flows create a swirling flow of air which are cleaning and moisturizing mixture of air and obtaining humidity required values.

2. The method according to claim 1, characterized in that for the preparation of low humidity air temperature mixed air reduce the large flow of external air, and followed by heating to reach the desired temperature and humidity of the air in the room.

3. The method of conditioning air which includes cleaning, humidification, cooling, dehumidification, heating, characterized in that before the alignment parameter of air is the temperature creates a swirling air flow, which make cleaning and humidification, dehumidification produce cooled to loss of moisture.

4. The air conditioning system containing the fan, the mixing chamber with internal and external regulatory air regulating valves, actuators, instruments, control sensors, air cooler, air heater and irrigation system, characterized in that the mixing chamber is made in the form of a cyclone mixer type and combined with irrigation system.

5. The system according to claim 4, characterized in that in the preparation of the air is too humid areas system contains mounted in front of the heater additional sensor with a temperature controller, which, through a pressure regulating valve maintains the temperature of the air mixture.



 

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