CN220397725U - Air-cooled variable water temperature control system for mild climate - Google Patents
Air-cooled variable water temperature control system for mild climate Download PDFInfo
- Publication number
- CN220397725U CN220397725U CN202322013249.3U CN202322013249U CN220397725U CN 220397725 U CN220397725 U CN 220397725U CN 202322013249 U CN202322013249 U CN 202322013249U CN 220397725 U CN220397725 U CN 220397725U
- Authority
- CN
- China
- Prior art keywords
- water
- cooling
- temperature
- control system
- air
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Landscapes
- Air Conditioning Control Device (AREA)
Abstract
The utility model relates to the technical field of water chilling units and discloses a mild weather air-cooled variable water temperature control system which comprises a water chilling unit, a plurality of cooling towers, a first water pump, a second water pump, a cooling fan, a frequency converter and a temperature and humidity detector, wherein a control cabinet is fixedly arranged on the outer surface of the water chilling unit, a control panel is fixedly arranged on the outer surface of the control cabinet, a central controller is fixedly arranged in the control cabinet, electromagnetic valves are fixedly arranged at the output ends of the cooling towers, and the cooling fan is electrically connected with the frequency converter. According to the air-cooled variable water temperature control system for the mild climate, the temperature and humidity detector detects that the outdoor humidity is compared with the indoor humidity in a region with requirements, and the central controller is matched for adjusting the water outlet temperature of the water chilling unit, so that the optimal chilled water outlet temperature can be adjusted for a customer according to the characteristics of the mild climate, and the energy consumption is saved.
Description
Technical Field
The utility model relates to the technical field of water chilling units, in particular to a mild weather air-cooled variable water temperature control system.
Background
The country uses energy conservation and emission reduction, double carbon as national strategy, and the central air conditioner is also a large energy consumption consumer in the industrial and commercial fields. For the efficient refrigeration machine room of the central air-conditioning water system, relevant departments of the country have issued corresponding technical standards of technical regulations of efficient refrigeration machine room T/CECS 1012-2022.
The water outlet temperature of a central air conditioning water chilling unit equipment manufacturer is usually set to be 7-12 ℃, under the condition of mild climate, the difference between the water outlet temperature of the water chilling unit and actual demand is not clear, the water outlet temperature of the water chilling unit is often tried to be improved, but the water outlet temperature is improved to be more or less to reach an optimal state, so that the water outlet temperature is a problem to be solved, a theoretical design scheme is made for an efficient machine room by a design institute, the water outlet temperature is usually 7-12 ℃ in the actual implementation process and is only in connection with an automatic control specialty, the water outlet temperature of the design label of the central air conditioning system is usually 7-12 ℃ and is more close to the demand of the user, and the water outlet temperature of the chilled water is adjusted to be most reasonable for the customer according to the characteristics of the mild climate, so that energy consumption is an important problem to be solved;
at present, a cooling tower fan is in a long-time running state (the control of the cooling tower is started and stopped according to the actual temperature, and the general set value of a cooling tower equipment manufacturer is that the water outlet temperature of the cooling tower reaches 25 ℃ and is automatically started), and in a system of a high-efficiency machine room, the energy consumption of the cooling tower fan accounts for 3% -6% of the energy consumption of the whole air conditioning system. Under the condition of mild climate, the central air conditioning system is always composed of a plurality of cooling towers in a state of annual operation, so that the mild climate characteristics are effectively utilized to the greatest extent, the opening time of a fan of the cooling tower is reduced, the cooling towers of the system are reasonably utilized, the heat dissipation area of the cooling towers is increased, and the aim of saving energy is achieved.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model provides a mild weather air-cooled variable water temperature control system to solve the problems in the background art.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a gentle climate forced air cooling type variable water temperature control system, includes cooling water set, a plurality of cooling towers, first water pump, second water pump, cooling blower, converter and temperature and humidity detector, the surface fixed mounting of cooling water set has the switch board, the surface fixed mounting of switch board has control panel, the inside fixed mounting of switch board has central controller.
By adopting the technical scheme, the temperature and humidity detector is used for detecting the outdoor humidity and the indoor humidity to be compared with each other in the area with the requirement, and the central controller is matched for adjusting the water outlet temperature of the water chilling unit.
Preferably, the outer surface of cooling water set has offered cooling water supply mouth and cooling water return mouth, and a plurality of cooling tower's output fixed communication has the pipe that merges, it is fixed to communicate with the cooling water supply mouth to merge the pipe, a plurality of the equal fixed mounting of output of cooling tower has the solenoid valve, cooling fan and converter electric connection.
By adopting the technical scheme, the electromagnetic valve controls water flow and controls the frequency of the cooling fan through the frequency converter.
Preferably, the outer surface of the water chilling unit is provided with a chilled water inlet and a chilled water outlet, the input end of the first water pump is fixedly communicated with external chilled water, and the output end of the first water pump is fixedly communicated with the chilled water inlet.
By adopting the technical scheme, the central controller enables the first water pump to work, chilled water is pumped into the chilled water inlet and enters the water chilling unit, and the chilled water is discharged through the chilled water outlet.
Preferably, the input end of the second water pump is fixedly communicated with the cooling water return port, and the output end of the second water pump is fixedly communicated with the output end of the cooling tower.
By adopting the technical scheme, the central controller enables the second water pump to work, and water in the water chilling unit is pumped into the cooling tower for backwater.
Compared with the prior art, the utility model has the beneficial effects that:
1. according to the air-cooled variable water temperature control system for the mild climate, the temperature and humidity detector detects that the outdoor humidity is compared with the indoor humidity in a region with requirements, and the central controller is matched for adjusting the water outlet temperature of the water chilling unit, so that the optimal chilled water outlet temperature can be adjusted for a customer according to the characteristics of the mild climate, and the energy consumption is saved.
2. According to the mild climate air-cooled variable water temperature control system, two (or more) cooling tower water systems are designed into the same-program system, water conservation balance of the cooling towers is achieved, the cooling towers are controlled by adopting a group control technology and independent control, control logic is used for prioritizing the starting quantity of cooling towers, delaying the starting temperature of cooling tower fans and reducing the operating frequency of the cooling towers, the effect that the mild climate characteristics can be effectively utilized to the greatest extent is achieved, the starting time of the cooling tower fans is reduced, the cooling towers of the system are reasonably utilized, the heat dissipation area of the cooling towers is increased, and the purpose of saving energy is achieved.
Drawings
FIG. 1 is a schematic front view of a water chiller and related structures of the present utility model;
FIG. 2 is a schematic rear view of the present utility model;
FIG. 3 is a schematic diagram of the structure of the present utility model;
FIG. 4 is a schematic diagram of the cooling tower and related structure of the cooling tower.
In the figure: 1. a water chiller; 2. a temperature and humidity detector; 3. a control cabinet; 4. a control panel; 5. a chilled water inlet; 6. a chilled water outlet; 7. a first water pump; 8. a second water pump; 9. a cooling tower; 10. a cooling water supply port; 11. a cooling water return port; 12. an electromagnetic valve; 13. a cooling fan; 14. a frequency converter.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Example 1:
referring to fig. 1-4 in combination, a mild climate air-cooled variable water temperature control system comprises a water chilling unit 1, a plurality of cooling towers 9, a first water pump 7, a second water pump 8, a cooling fan 13, a frequency converter 14 and a temperature and humidity detector 2, wherein the temperature and humidity detector 2 is arranged outdoors to detect that the outdoor humidity is compared with an area with the indoor humidity of which the relative humidity is lower than 70%, a control cabinet 3 is fixedly arranged on the outer surface of the water chilling unit 1, a control panel 4 is fixedly arranged on the outer surface of the control cabinet 3, a central controller is fixedly arranged in the control cabinet 3, the temperature and humidity detector 2 sends a signal to the central controller, the water outlet temperature of the water chilling unit 1 is adjusted through the central controller in the control cabinet 3, and the recommended adjustment strategy is as follows (if the indoor humidity is required to be in an area with high requirement, and the independent dehumidification design is recommended on the design of an air conditioning system): the outdoor relative humidity is lower than 40%, and the water outlet temperature of the water chilling unit 1 is 13-18 ℃; the outdoor relative humidity is lower than 50%, and the water outlet temperature of the water chilling unit 1 is 11-16 ℃; the outdoor relative humidity is lower than 50-70%, and the water outlet temperature of the water chilling unit 1 is 9-14 ℃; the outdoor relative humidity is higher than 70%, and the water outlet temperature of the water chilling unit 1 is 7-12 ℃; the outdoor relative humidity is lower than 90 percent, and the water outlet temperature of the water chilling unit 1 is 5-10 ℃.
Working principle: the outdoor humidity is detected by the temperature and humidity detector 2 arranged outdoors, the temperature and humidity detector 2 sends a signal to the central controller, the central controller in the control cabinet 3 adjusts the outlet water temperature of the water chilling unit 1, and the suggested adjustment strategy is as follows (if the indoor humidity is in a region with high requirement, the independent dehumidification design is suggested in the design of an air conditioning system): the outdoor relative humidity is lower than 40%, and the water outlet temperature of the water chilling unit 1 is 13-18 ℃; the outdoor relative humidity is lower than 50%, and the water outlet temperature of the water chilling unit 1 is 11-16 ℃; the outdoor relative humidity is lower than 50% -70%, and the water outlet temperature of the water chilling unit 1 is 9 ℃ -14 ℃; the outdoor relative humidity is higher than 70%, and the water outlet temperature of the water chilling unit 1 is 7-12 ℃; the outdoor relative humidity is lower than 90 percent, and the water outlet temperature of the water chilling unit 1 is 5-10 ℃.
Compared with the related art, the mild weather air-cooled variable water temperature control system provided by the utility model has the following beneficial effects: the method has the advantages that the optimal chilled water outlet temperature can be adjusted for customers according to the characteristics of mild climate, and the energy consumption is saved.
Example 2:
referring to fig. 1-4, a cooling water supply port 10 and a cooling water return port 11 are formed on the outer surface of the water chilling unit 1, converging pipes are fixedly connected to the output ends of the cooling towers 9, the converging pipes are fixedly connected to the cooling water supply port 10, the water systems of the two (or more) cooling towers 9 are designed into the same-program system, namely, the cooling water flow of each cooling tower 9 is the same, water balance of the cooling towers 9 is achieved, the cooling towers 9 are controlled by adopting a group control technology and independent control, control logic prioritizes the opening quantity of the cooling towers 9, the starting temperature of the cooling fans 13 is delayed, the operating frequency of the cooling towers 9 is reduced, electromagnetic valves 12 are fixedly installed at the output ends of the cooling towers 9, the water flow is controlled through the electromagnetic valves 12, the cooling fans 13 are electrically connected with the frequency converters 14, and the frequency of the cooling fans 13 is controlled through the frequency converters 14.
Group control technology: the electromagnetic valve 12 is added before and after each cooling tower 9 to control water flow, a central controller control program is set through the control panel 4, the water valve of the cooling tower 9 is preferentially opened according to the control logic of the central controller, and the opening quantity of the cooling towers 9 is preferentially increased;
and (3) independent control: the cooling fans 13 of the cooling towers 9 are individually controlled according to the water temperature, and the temperature of each cooling tower 9 is set as follows: when the water inlet temperature of the cooling tower 9 is 35 ℃, the cooling fan 13 is started again.
Working principle: the water system of the two (or more) cooling towers 9 is designed into the same-program system, namely, the cooling water flow of each cooling tower 9 is the same, so that the water conservancy balance of the cooling towers 9 is realized, the control of the cooling towers 9 adopts the group control technology and independent control, the control logic prioritizes the opening quantity of the cooling towers 9, delays the starting temperature of the cooling fans 13, and reduces the running frequency of the cooling towers 9.
Group control technology: solenoid valves 12 are added before and after each cooling tower 9 to control water flow, water valves of the cooling towers 9 are preferentially opened according to control logic, and the number of the opened cooling towers 9 is preferentially increased;
and (3) independent control: the cooling fans 13 of the cooling towers 9 are individually controlled according to the water temperature, and the temperature of each cooling tower 9 is set as follows: when the water inlet temperature of the cooling tower 9 is 35 ℃, the cooling fan 13 is started again.
Compared with the related art, the mild weather air-cooled variable water temperature control system provided by the utility model has the following beneficial effects: the method has the advantages that the characteristics of mild climate can be effectively utilized to the greatest extent, the starting time of a fan of the cooling tower is reduced, the cooling tower of the system is reasonably utilized, the heat dissipation area of the cooling tower is increased, and the purpose of energy conservation is achieved.
The control mode of the utility model is automatically controlled by the controller, the control circuit of the controller can be realized by simple programming of a person skilled in the art, and the supply of the power supply also belongs to common knowledge in the art.
The above-mentioned respective means concerning the use of the apparatus are different in selection and use according to actual practice, and various parameters are referred to, and the function according to the apparatus used corresponds to the effect achieved.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. The utility model provides a temperature control system is changed to air-cooled type of gentle weather, includes cooling water set (1), a plurality of cooling towers (9), first water pump (7), second water pump (8), cooling fan (13), converter (14) and temperature and humidity detector (2), its characterized in that: the water chilling unit is characterized in that a control cabinet (3) is fixedly arranged on the outer surface of the water chilling unit (1), a control panel (4) is fixedly arranged on the outer surface of the control cabinet (3), and a central controller is fixedly arranged in the control cabinet (3).
2. The mild weather air-cooled variable water temperature control system of claim 1, wherein: the cooling water unit (1) is characterized in that a cooling water supply port (10) and a cooling water return port (11) are formed in the outer surface of the cooling water unit, a plurality of output ends of the cooling towers (9) are fixedly communicated with a converging pipe, the converging pipe is fixedly communicated with the cooling water supply port (10), a plurality of output ends of the cooling towers (9) are fixedly provided with electromagnetic valves (12), and the cooling fans (13) are electrically connected with the frequency converters (14).
3. The mild weather air-cooled variable water temperature control system of claim 1, wherein: the external surface of cooling water set (1) has seted up frozen water inlet (5) and frozen water delivery port (6), the input of first water pump (7) is fixed to be linked together with external frozen water, the output of first water pump (7) is fixed to be linked together with frozen water inlet (5).
4. The mild weather air-cooled variable water temperature control system of claim 1, wherein: the input end of the second water pump (8) is fixedly communicated with the cooling water return port (11), and the output end of the second water pump (8) is fixedly communicated with the output end of the cooling tower (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322013249.3U CN220397725U (en) | 2023-07-28 | 2023-07-28 | Air-cooled variable water temperature control system for mild climate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322013249.3U CN220397725U (en) | 2023-07-28 | 2023-07-28 | Air-cooled variable water temperature control system for mild climate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220397725U true CN220397725U (en) | 2024-01-26 |
Family
ID=89602828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322013249.3U Active CN220397725U (en) | 2023-07-28 | 2023-07-28 | Air-cooled variable water temperature control system for mild climate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220397725U (en) |
-
2023
- 2023-07-28 CN CN202322013249.3U patent/CN220397725U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102121741B (en) | Multi-connection air conditioning unit and control method thereof during small-load refrigeration running | |
| CN106225362B (en) | A kind of control method and system of Double-head centrifugal refrigerating machines | |
| CN101608817B (en) | Energy-saving air conditioner using outdoor cold source indirectly | |
| CN105020845A (en) | Linkage energy-saving control system and method for air conditioning system | |
| CN201129827Y (en) | A central air-conditioning control device | |
| CN106051959A (en) | Energy conservation optimization system for central air conditioner | |
| CN204902127U (en) | Terminal coordinated control's of air conditioner water system and air conditioner economizer | |
| CN114459133A (en) | Energy-saving control method and energy-saving control system for central air-conditioning system | |
| CN103162362B (en) | A kind of energy-saving water cooling air conditioner | |
| CN117387250A (en) | Multi-module air source heat pump system and grouping control method thereof | |
| CN209782928U (en) | Energy-saving variable-frequency water pump control system | |
| CN205783549U (en) | Air conditioning unit energy-saving control system | |
| CN102538105A (en) | Air-source water-solution heat pump type refrigerating and heating system of air-conditioner and control method thereof | |
| CN213396005U (en) | Cold and hot governing system suitable for single air source heat pump set | |
| CN220397725U (en) | Air-cooled variable water temperature control system for mild climate | |
| CN210107618U (en) | Cooling water system | |
| CN207365307U (en) | A kind of regulating system of indoor air temperature of electric control room | |
| CN212930316U (en) | Modular integrated water chilling unit | |
| CN201242229Y (en) | Special-purpose air-conditioning unit for new wind integral energy-saving machinery room | |
| CN112378005A (en) | Primary and secondary water pumping system of air conditioner water system and energy-saving adjusting method thereof | |
| CN202915491U (en) | Air conditioner refrigerant energy-saving device for machine rooms | |
| CN111473542A (en) | Cold and heat adjusting system and method suitable for single air source heat pump unit | |
| CN203163122U (en) | Integrated water-cooling central air-conditioner | |
| CN209279299U (en) | A kind of big temperature difference energy-saving air conditioning system of chilled water | |
| CN202254130U (en) | Matching system for pump head flow of water system of central air conditioner and resistance flow of air conditioner pipeline system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |