CN218442648U - Two cold source fresh air processing systems - Google Patents
Two cold source fresh air processing systems Download PDFInfo
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- CN218442648U CN218442648U CN202222812316.3U CN202222812316U CN218442648U CN 218442648 U CN218442648 U CN 218442648U CN 202222812316 U CN202222812316 U CN 202222812316U CN 218442648 U CN218442648 U CN 218442648U
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Abstract
The utility model discloses a two cold sources fresh air processing system, including the air conditioning box body, air conditioning box body front end is provided with new trend air intake, the rear end is provided with fresh air outlet, set gradually from the preceding front in the air conditioning box body and just imitate filter, surface cooler and direct-expansion machine system, direct-expansion machine system includes evaporimeter and condenser, the surface cooler intercommunication has cold water inlet tube and cold water outlet pipe, the evaporimeter is provided with first gaseous working medium conveyer pipe and first liquid working medium conveyer pipe, the condenser is provided with second gaseous working medium conveyer pipe and second liquid working medium conveyer pipe, be provided with the liquid storage pot between first liquid working medium conveyer pipe and the second liquid working medium conveyer pipe. The system adopts a mode of combining the surface cooler and the direct expansion machine to treat fresh air, improves the running energy consumption ratio of the water chilling unit, reduces the energy consumption and simultaneously cancels reheating energy consumption under the condition of meeting the use requirement of the process.
Description
Technical Field
The utility model belongs to the technical field of energy-conservation, a energy-saving district temperature and humidity control mode of making a whole factory is related to, in particular to use two cold source fresh air handling unit centralized processing new trend to send the energy-saving temperature and humidity control mode of each workshop air conditioner processing again.
Background
In order to ensure that the supplied air in a plant area has certain humidity, aiming at a clean air conditioning unit, under the process use condition that the fresh air of the unit is small and the return air does not have excessive moisture content, the traditional air conditioning unit mixes the fresh air with the return air, cools the mixed air to 14 ℃ dew point through chilled water at 7-12 ℃, and heats the mixed air to the air supply temperature through steam heating or electric heating.
For a plant area with a plurality of air conditioning units, because the fresh air volume is small, the fresh air and the return air are mixed and then are completely made into 7 ℃ chilled water by a water chilling unit, the chilled water is treated to be at a low dew point temperature, and then the chilled water is heated by steam, and the excessive treatment causes huge loss of energy.
Patent 201820746643.4 discloses a double-cold-source dehumidification fresh air fan, and although a secondary cooling device with double cold sources is arranged on the fresh air fan, a return air heating device is not arranged, and the return air can be heated to the required temperature by a heating device. Patent 202221058211.7 discloses a two cold source deep dehumidification fresh air conditioning system of area condensation heat recovery, though set up secondary cooling and heating device, nevertheless need be connected to external swimming pool water and carry out the heat storage, is not the heat storage of self system.
Disclosure of Invention
The utility model aims at providing a two cold sources fresh air processing system adopts the mode that surface cooler and direct expansion machine combine to handle the new trend, and the required refrigerated water temperature of the surface cooler of factory improves to 10 ℃ by 7 ℃ simultaneously, under the condition that can satisfy technology user demand, improves cooling water set running energy consumption ratio, reduces the energy consumption, cancels the energy consumption of reheating simultaneously. The fresh air of a plurality of clean air conditioning units is treated by a double-cold-source fresh air treatment unit in a unified way.
The utility model provides a two cold sources fresh air processing system, includes the air conditioning box, the air conditioning box front end is provided with the new trend air intake, the rear end is provided with the new trend air outlet, set gradually primary filter, surface cooler and direct-expansion machine system from preceding backward in the air conditioning box, direct-expansion machine system includes evaporimeter and condenser, surface cooler intercommunication has cold water inlet tube and cold water outlet pipe, the evaporimeter is provided with first gaseous working medium conveyer pipe and first liquid working medium conveyer pipe, the condenser is provided with second gaseous working medium conveyer pipe and second liquid working medium conveyer pipe, be provided with the liquid storage pot between first liquid working medium conveyer pipe and the second liquid working medium conveyer pipe.
Preferably, the first gaseous working medium conveying pipe and the second gaseous working medium conveying pipe are communicated with a compressor.
Preferably, a throttling device is arranged between the liquid storage tank and the first liquid working medium conveying pipe.
Preferably, the processing system is further provided with a fresh air inlet temperature sensor, a surface cooler temperature sensor, an evaporator temperature sensor and a condenser temperature sensor, the temperature sensors are communicated with a control center together, and the control center is further communicated with a compressor in a communication mode.
Preferably, the evaporator is provided with a water baffle, and a water receiving disc is connected below the surface cooler, the evaporator and the water baffle together.
Preferably, an air supply fan is further arranged in the air conditioning box body and is arranged at the tail end of the air conditioning system.
The double-cold-source fresh air processing unit uniformly processes all fresh air, the fresh air is cooled to 17 ℃ dew point temperature through a surface air cooler which is used for feeding 10 ℃ chilled water, and an evaporator and a condenser of the direct expansion machine are placed behind the surface air cooler. After the evaporation end of the direct expansion machine continuously cools the fresh air to the dew point of 10 ℃, the fresh air passes through a condenser of the direct expansion machine, the condenser completely releases heat, and the temperature of the fresh air is heated to 31 ℃. And uniformly treating the fresh air, and sending the treated fresh air into air conditioners in various workshops. In the air conditioning treatment process of each workshop, fresh air treated by the fresh air unit is mixed with return air and then cooled to the air supply temperature through the surface cooler for air supply. In the air conditioning treatment process of each workshop, the surface cooler still adopts 10 ℃ chilled water to reduce the temperature of the mixed air to the air supply temperature for air supply.
The utility model has the advantages that
The utility model discloses a set up the straight machine system that expands that evaporimeter and condenser are constituteed behind the surface cooler, cold water temperature when having realized improving the surface cooler cooling new trend fully collects and utilizes the waste heat of earlier cooling back intensification in-process, improves cooling water set operation energy consumption ratio, reduces the energy consumption, cancels the energy consumption of reheating simultaneously.
Drawings
FIG. 1 is a schematic diagram of the system of the present invention;
Detailed Description
The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application.
The utility model discloses a two cold source fresh air processing system as shown in figure 1, this system divide into one-level cold source chilled water system, the direct quick-witted system that expands of second grade cold source, the three subsystem of control system according to the function, this system adopts the surface cooler to handle with the mode that the machine combines is unified to the fresh air of N clean air conditioning unit, then the fresh air after the cooperation fresh air pipeline transport is handled to 1, 2 \8230, the service condition of factory area technology is accomplished to N each air conditioning processing unit 29.
The front end of the air conditioner box body 2 is provided with a fresh air port 1, and the air conditioner box body 2 is internally provided with a primary filter 3, a surface cooler 14, an evaporator 16 and a condenser 20. The external cold source 10 ℃ chilled water enters the surface cooler through the cold water inlet pipe 4, and the 15 ℃ chilled water after heat exchange with fresh air is led to the external cold source through the cold water outlet pipe 5. The liquid working medium of the evaporator absorbs heat and is changed into gaseous working medium, the gaseous working medium is communicated with the compressor 22 through the first gaseous working medium conveying pipe 17, the condenser obtains the gaseous working medium from the compressor through the second gaseous working medium conveying pipe 19, the gaseous working medium in the condenser is changed into the liquid working medium through heat exchange, the gaseous working medium is communicated with the liquid storage tank 9 through the second liquid working medium conveying pipe 10, and the liquid storage tank provides the liquid working medium for the evaporator through the first liquid working medium conveying pipe 6 to continuously exchange heat with fresh air.
The one-level cold source refrigerated water system that this embodiment relates to:
the surface cooler 14 is communicated with 10 ℃ chilled water generated by refrigerating units in a plant area through a cold water inlet pipe 4, all fresh air required by the air conditioning unit absorbs heat through the surface cooler 14 by the 10 ℃ chilled water, the temperature of the fresh air is cooled to 17 ℃ dew point, and the temperature of the 10 ℃ chilled water is increased to 15 ℃ chilled water, then the fresh air is communicated with the refrigerating units arranged in the plant area through a cold water outlet pipe 5, and the refrigerating is carried out again; the water chilling unit is provided with a flow regulating valve for regulating the flow so as to ensure the sufficient refrigerating capacity and the dew point temperature of 17 ℃ behind the surface air cooler 14, and simultaneously ensures the stable return water temperature of the chilled water, so that the water chilling unit of an external cold source can stably run. The refrigerating water system is responsible for cooling the fresh air to 17 ℃ dew point for dehumidification, the refrigerating unit in the original factory area adopts 7 ℃ refrigerating water, the temperature of the refrigerating water is improved by 3 ℃, the energy efficiency ratio efficiency of the water chilling unit is improved, the energy consumption is reduced, the dew point temperature behind the cold water coil pipe is ensured to be 17 ℃ through cold quantity control of the original refrigerating unit, and then the temperature is continuously reduced for dehumidification through the evaporator of the direct expansion machine system again.
The second grade cold source direct expansion machine system that this embodiment relates to:
the evaporator 16, the condenser 20, the compressor 22, the throttling device 8, the liquid storage tank 9 and other equipment jointly form a direct expansion machine system; an evaporator 16 of the direct expansion machine is arranged behind the surface cooler, all fresh air required by the air conditioning unit passes through the surface cooler 14 and is cooled to a dew point temperature of 17 ℃, the temperature of the fresh air passes through the evaporator 16 of the direct expansion machine, liquid working media in the fresh air is evaporated to be gaseous, the fresh air enters a compressor 21 through a first gaseous working medium conveying pipe 17 of an evaporator of the direct expansion machine, the temperature and the pressure of the working media are increased in the compressor 21, the working media are gradually changed into high-temperature and high-pressure gaseous working media, then the working media enter a condenser 20 through a second gaseous working medium conveying pipe 19, the gaseous working media are condensed into liquid working media through heat emission in the condenser, the liquid working media enter a liquid storage tank 9 through a second liquid working medium conveying pipe 10, redundant liquid working media are stored, then continuously pass through a throttling device 8 and are changed into low-pressure and low-temperature liquid working media, and then return to the evaporator 16 of the direct expansion machine through a first liquid working medium conveying pipe 6, so that a reciprocating cycle is formed, and the temperature reduction and dehumidification are carried out on the fresh air.
The control system related to the embodiment:
according to the control system related to the embodiment, firstly, a fresh air inlet temperature and humidity sensor is arranged in front of the surface air cooler 14, after calculation, the fresh air dew point temperature is lower than 10 ℃, the double cooling sources are closed, the dew point temperature is 10-17 ℃, the cold source of the surface air cooler is closed, the direct expansion system is operated, the dew point temperature is higher than 17 ℃, and the double cooling sources are opened. The opening degree of a cold water valve is adjusted by a cold water system through detecting the temperature of a surface cooler temperature sensor and the temperature of a humidity sensor after the surface cooler 14, the temperature of fresh air passing through the surface cooler is controlled to reach the dew point temperature of 17 ℃, the fresh air is transmitted to the system through a temperature and humidity sensor 18 and a temperature signal transmission line 25 which are arranged behind an evaporator 16 of a direct expansion machine system to obtain the temperature, when the actual value of the dew point temperature is higher than the set value of the dew point temperature, whether the direct expansion machine system is started or not is judged, if not, the direct expansion machine system is started, the refrigeration capacity of the direct expansion machine set is improved and the dew point temperature is reduced by controlling the running frequency of a compressor 22; if the actual dew point temperature value is lower than the set dew point temperature value, the refrigeration capacity of the direct expansion unit is reduced and the dew point temperature is raised by controlling the operating frequency of the compressor 22 and gradually approaches the set dew point temperature; the control system has the functions of: and the automatic adjustment and control of the dew point temperature are realized.
Fresh air conveying system and 1, 2 \8230jair conditioning treatment system
The double-cold-source fresh air processing unit processes fresh air to 10 ℃ dew point for dehumidification, the fresh air heated by a condenser of the direct expansion machine system is respectively conveyed to 1 and 2' \ 8230through a fresh air conveying pipeline, and the N air conditioning unit 29 realizes the use process of conveying the fresh air to a process workshop. Fresh air is delivered to a clean air conditioning processing unit through a fresh air delivery pipeline, is mixed with return air of an air conditioner, and then is delivered by reducing the temperature of mixed air to an air supply temperature through a surface air cooler 14 with the water inlet temperature of 10 ℃, and the opening of a freezing water valve of the surface air cooler is controlled by monitoring the temperature of the surface air cooler and comparing the temperature with a set air supply temperature, so that the air supply temperature is regulated and controlled, and the temperature and humidity requirements of process air supply are met.
This embodiment realizes that two cold sources new trend are handled in unison, and the air conditioning process step of energy-conserving effect is carried out: 1. 2 \8230, N air conditioning units need all fresh air double cold source fresh air processing units, firstly pass through a primary filter device 3, then pass through a surface cooler 14 of a refrigerating water system, the temperature of the fresh air is reduced to 17 ℃ dew point, then pass through an evaporator 16 of a direct expansion machine system, the temperature of the dew point of the fresh air is reduced to 10 ℃, part of liquid is separated out after passing through a water baffle 7, the fresh air continuously passes through a condenser 16 of the direct expansion machine system, the condenser 16 emits heat, then passes through a fan 11, the fresh air enters a fresh air conveying pipeline and respectively enters 1 and 2 \8230, N air conditioning units 29 are mixed with the return air, the mixed air passes through the surface cooler, the mixed air is reduced to the set air supply temperature for air supply, and is sent to each process workshop for use, the arrangement type control system: firstly, acquiring the dew point temperature of the surface cooler behind the surface cooler 14 according to a temperature sensor 15 and a temperature signal transmission line 24 of the double-cold-source fresh air processing unit, controlling the dew point temperature by controlling the refrigerating capacity by adjusting the opening of a cold water valve by the cold water unit according to the comparison between the actual dew point temperature and the set dew point temperature, and controlling the dew point temperature of the surface cooler behind the surface cooler 14 to 17 ℃; the dew point temperature is obtained by transmitting the temperature signal to the system through a temperature sensor 18 and a temperature signal transmission line 25 which are arranged behind a condenser 16 of the direct expansion machine system, and the control system reduces the dew point temperature by adjusting the frequency of a compressor 22 to increase the refrigerating capacity according to the comparison between the actual dew point temperature and the set dew point temperature, so as to realize the adjustment of the dew point temperature; the temperature sensors behind the surface coolers in each air conditioning unit are matched with the temperature signal transmission lines to obtain the air supply temperature, and according to the comparison between the actual air supply temperature and the set air supply temperature, the water chilling unit controls the opening of the cold water valve, adjusts the refrigerating capacity and realizes the control of the final air supply temperature. The system is characterized in that fresh air is uniformly treated by a direct expansion machine system, a chilled water system and a control system, and is simultaneously sent into 1, 2 \8230, 8230and N air conditioning treatment units, mixed with return air and sent through the chilled water system to realize energy conservation and efficiency improvement finally.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
1. The utility model provides a two cold sources fresh air processing system, its characterized in that, includes air conditioner box (2), air conditioner box front end is provided with fresh air intake (1), the rear end is provided with fresh air outlet (12), set gradually primary filter (3), surface cooler (14) and straight machine system of expanding from the front to the back in the air conditioner box, straight machine system of expanding includes evaporimeter (16) and condenser (20), the surface cooler intercommunication has cold water inlet tube (4) and cold water outlet pipe (5), the evaporimeter is provided with first gaseous working medium conveyer pipe (17) and first liquid working medium conveyer pipe (6), the condenser is provided with second gaseous working medium conveyer pipe (19) and second liquid working medium conveyer pipe (10), be provided with liquid storage pot (9) between first liquid working medium conveyer pipe and the second liquid working medium conveyer pipe.
2. The fresh air processing system with double cold sources as claimed in claim 1, wherein the first gaseous working medium delivery pipe and the second gaseous working medium delivery pipe are communicated with a compressor (22).
3. The fresh air processing system with double cold sources as claimed in claim 1, wherein a throttling device (8) is arranged between the liquid storage tank and the first liquid working medium conveying pipe.
4. The dual cold source fresh air handling system of claim 1 wherein the handling system is further provided with fresh air inlet temperature and humidity sensors (13), surface air cooler temperature and humidity sensors (15), evaporator temperature and humidity sensors (18), condenser temperature and humidity sensors (21), the plurality of temperature and humidity sensors being in communication with a control center, the control center being in communication with a compressor.
5. The fresh air processing system with double cold sources as claimed in claim 4, wherein the evaporator is provided with a water baffle (7), and a water pan is connected under the surface cooler, the evaporator and the water baffle.
6. The dual-cold-source fresh air processing system as claimed in claim 1, wherein an air supply fan (11) is further arranged in the air conditioning cabinet, and the air supply fan is arranged at the tail end of the air conditioning system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222812316.3U CN218442648U (en) | 2022-10-25 | 2022-10-25 | Two cold source fresh air processing systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222812316.3U CN218442648U (en) | 2022-10-25 | 2022-10-25 | Two cold source fresh air processing systems |
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| Publication Number | Publication Date |
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| CN218442648U true CN218442648U (en) | 2023-02-03 |
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| CN202222812316.3U Active CN218442648U (en) | 2022-10-25 | 2022-10-25 | Two cold source fresh air processing systems |
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