CN115111793A - Cold station of integral type wisdom - Google Patents
Cold station of integral type wisdom Download PDFInfo
- Publication number
- CN115111793A CN115111793A CN202210712877.8A CN202210712877A CN115111793A CN 115111793 A CN115111793 A CN 115111793A CN 202210712877 A CN202210712877 A CN 202210712877A CN 115111793 A CN115111793 A CN 115111793A
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- refrigerant
- condenser
- container
- cooling water
- flooded evaporator
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
- F25B1/04—Compression machines, plants or systems with non-reversible cycle with compressor of rotary type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/40—Fluid line arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The invention discloses an integrated intelligent cooling station which comprises a container, a flooded evaporator, a magnetic suspension compressor, a condenser, an expansion valve and a central controller, wherein the flooded evaporator, the magnetic suspension compressor, the condenser, the expansion valve and the central controller are integrally installed in the container, the central controller is respectively in control connection with the flooded evaporator, the magnetic suspension compressor, the condenser and the expansion valve, a refrigerant outlet of the flooded evaporator is communicated with a refrigerant inlet of the magnetic suspension compressor, a refrigerant outlet of the magnetic suspension compressor is communicated with a refrigerant inlet of the condenser, and a refrigerant outlet of the condenser is communicated with the refrigerant inlet of the flooded evaporator after being connected with the expansion valve in series. The intelligent building system has the characteristics of small occupied area, space saving, high construction speed, high intelligent degree, convenience in debugging, high system COP (coefficient of performance), low energy consumption, multiple application scenes and wide application range.
Description
Technical Field
The embodiment of the invention relates to the technical field of cold station systems, in particular to an integrated intelligent cold station.
Background
Most of the existing cold station devices are composed of core components such as an evaporator, a compressor, a condenser, an expansion valve, a circulating water pump, a cooling tower and the like, and are widely applied to refrigeration systems in low-temperature scenes such as a refrigeration house, a storage room and the like. The equipment components involved in each cold station are of a wide variety and manufacturers are numerous. In the process of cold station system construction and operation, each component needs to be operated independently, and the traditional cold station arrangement is dispersed, so that the system is large in occupied area, long in installation period and large in difficulty. The pipeline arrangement of a chilled water inlet and a chilled water outlet of a cold station system is influenced by the positions of an evaporator and a condenser, and the layout planning is required for each installation; the traditional cold station system adopts a screw type or centrifugal compressor, the refrigerant and the lubricating oil are mixed and dissolved, and the maintenance is difficult along with the increase of the service life; along with the increase of service life, system equipment is aged, the coefficient of performance (COP) is low, and the operation energy consumption is high; the traditional cold station system lacks a central control system, the intelligent degree is low, the debugging is difficult, and professional operators are needed.
Disclosure of Invention
Therefore, the embodiment of the invention provides an integrated intelligent cold station, which is used for solving one or more of the technical problems of dispersed arrangement, large occupied area, long installation period, need of layout planning of chilled water and cooling water pipelines, low refrigeration coefficient, time attenuation, no central control, low intelligent degree and the like of the traditional cold station.
In order to achieve the above object, the embodiments of the present invention provide the following technical solutions:
an integrated intelligent cold station comprises a container, a flooded evaporator, a magnetic suspension compressor, a condenser, an expansion valve, a low-resistance intelligent variable-frequency refrigeration water pump, a low-resistance intelligent variable-frequency cooling water pump and a central controller, the flooded evaporator, the magnetic suspension compressor, the condenser, the expansion valve, the central controller, the low-resistance intelligent variable-frequency refrigeration water pump and the low-resistance intelligent variable-frequency cooling water pump are all integrally installed in the container, the central controller is respectively connected with the flooded evaporator, the magnetic suspension compressor, the condenser and the expansion valve, the low-resistance intelligent variable-frequency refrigeration water pump and the low-resistance intelligent variable-frequency cooling water pump in a control way, the refrigerant outlet of the flooded evaporator is communicated with the refrigerant inlet of the magnetic suspension compressor, and a refrigerant outlet of the magnetic suspension compressor is communicated with a refrigerant inlet of the condenser, and a refrigerant outlet of the condenser is connected in series with the expansion valve and then communicated with a refrigerant inlet of the flooded evaporator.
Furthermore, the chilled water inlet and outlet of the flooded evaporator extend to the outside of the container through a chilled water pipeline, the cooling water inlet and outlet of the condenser extend to the outside of the container through a cooling water pipeline, the pipeline section of the chilled water pipeline, which is located inside the container, adopts a copper tube with spiral fins, and the chilled water inlet, the chilled water outlet of the chilled water pipeline and the cooling water inlet and the cooling water outlet of the cooling water pipeline are all located on the same side of the container, such as the tail of the container.
Further, the cold station of integral type wisdom still includes low resistance intelligence frequency conversion frozen water pump, low resistance intelligence frequency conversion frozen water pump concatenates on the refrigerated water outlet pipe of frozen water pipeline, well accuse ware with low resistance intelligence frequency conversion frozen water pump control connection realizes automatic intelligent frequency conversion.
Further, the cold station of integral type wisdom still includes low resistance intelligence frequency conversion cooling water pump, low resistance intelligence frequency conversion cooling water pump concatenates on the cooling water inlet tube of cooling water pipeline, well accuse ware with low resistance intelligence frequency conversion cooling water pump control is connected, realizes automatic intelligent frequency conversion.
Further, the center controller is installed at one end side portion in the container, for example, the front end side portion of the container, and the control panel of the center controller is exposed from the container.
Furthermore, the magnetic suspension compressor is an intelligent magnetic suspension compressor, the central controller is in control connection with the intelligent magnetic suspension compressor, and the magnetic suspension compressor automatically loads and unloads according to the refrigeration load.
Further, a refrigerant outlet of the flooded evaporator and a refrigerant inlet of the magnetic suspension compressor, a refrigerant outlet of the magnetic suspension compressor and a refrigerant inlet of the condenser, a refrigerant inlet of the condenser and the expansion valve, and a refrigerant inlet of the flooded evaporator are respectively communicated through different refrigerant pipelines.
Further, the control connection includes the combination of one or more in automatically controlled connection, gas accuse connection, the liquid accuse connection, well accuse ware adopts the programmable controller who independently develops, well accuse ware is used for controlling flooded evaporator, magnetic suspension compressor, condenser, expansion valve, low resistance intelligence variable frequency cooling water pump, the operation of low resistance intelligence variable frequency chilled water pump, thereby sets up parameter (for example load factor, temperature etc.) at control panel according to customer's demand and control the refrigerating output, monitors whole system simultaneously, for example information such as monitoring temperature, pressure, power, electric current, load factor, trouble.
The embodiment of the invention has the following advantages:
the core components of the flooded evaporator, the magnetic suspension compressor, the condenser, the expansion valve, the low-resistance intelligent variable-frequency refrigerating water pump and the low-resistance intelligent variable-frequency cooling water pump are integrated in the container, when a certain workshop or engineering needs a cold station, the container is directly transported to a specified position, and the cooling water and the refrigerating water are connected for use; the intelligent central controller is arranged to realize centralized control and monitor the whole system, so that the intelligent degree is high, and further group control can be realized for projects of a plurality of containers; the water and electricity are divided into two parts, such as cooling water and chilled water at the tail part of the container, and the central controller is arranged at the front end of the container, so that the debugging is more convenient; the advanced intelligent magnetic suspension compressor is adopted, lubricating oil is not needed, operation, maintenance and maintenance are simple and convenient, the COP of the system is improved, the refrigeration efficiency of the equipment is not attenuated along with the service time basically, and the energy consumption of the whole life cycle of the equipment is reduced; the intelligent frequency conversion control is directly carried out on the low-resistance intelligent frequency conversion refrigerating water pump and the low-resistance intelligent frequency conversion cooling water pump by adopting a central controller, so that an upper computer in a traditional cold station can be reduced; because the integrated in the container, consequently, can use in the comparatively complete mill of facility or engineering, also can use in places such as the slope that needs the cold station temporarily, meadow, mud flat, be suitable for multiple scene on the whole, the range of application is wide.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so that those skilled in the art can understand and read the present invention, and do not limit the conditions for implementing the present invention, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the functions and purposes of the present invention, should still fall within the scope of the present invention.
FIG. 1 is a schematic diagram of an integrated intelligent cold station according to an embodiment of the present invention;
fig. 2 is an electrical control schematic diagram of the integrated intelligent cold station according to the embodiment of the present invention.
In the figure: the system comprises a magnetic suspension compressor, a condenser, a 3-expansion valve, a 4-flooded evaporator, a 5-low-resistance intelligent variable-frequency refrigeration water pump, a 6-low-resistance intelligent variable-frequency cooling water pump, a 7-chilled water inlet, a 8-chilled water outlet, a 9-cooling water inlet, a 10-cooling water outlet, a 11-central controller and a 12-container.
Detailed Description
The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 and 2, this embodiment provides an integral type wisdom cold station, including flooded evaporator 4, magnetic suspension compressor 1, condenser 2, expansion valve 3, refrigerant pipeline, freezing water pipeline, low resistance intelligence frequency conversion frozen water pump 5, cooling water pipeline, low resistance intelligence frequency conversion cooled water pump 6, central controller 11 and container 12.
The full-liquid type evaporator 4, the magnetic suspension compressor 1, the condenser 2, the expansion valve 3, the refrigerant pipeline, the freezing water pipeline, the low-resistance intelligent variable-frequency freezing water pump 5, the cooling water pipeline, the low-resistance intelligent variable-frequency cooling water pump 6 and the central controller 11 are integrally installed in the container 12, wherein the magnetic suspension compressor 1 is the intelligent magnetic suspension compressor 1. The refrigerant outlet of the flooded evaporator 4 is communicated with the refrigerant inlet of the magnetic suspension compressor 1 through a first-stage refrigerant pipeline, the refrigerant outlet of the magnetic suspension compressor 1 is communicated with the refrigerant inlet of the condenser 2 through a first-stage refrigerant pipeline, the refrigerant outlet of the condenser 2 is communicated with the expansion valve 3 through a first-stage refrigerant pipeline, and the expansion valve 3 is communicated with the refrigerant inlet of the flooded evaporator 4 through a first-stage refrigerant pipeline. In the present embodiment, the central controller 11 is at the front side of the container 12, and the control panel of the central controller 11 is exposed from the inside of the container 12; generally, the exterior of the central controller 11 is provided with a protective shell and an openable cover plate, and the control panel can be exposed after the cover plate is opened. The flooded evaporator 4, the magnetic suspension compressor 1, the condenser 2 and the expansion valve 3 are not in contact with the central controller 11 in the container 12, the flooded evaporator 4 is relatively close to the tail of the container 12, the magnetic suspension compressor 1 is at a position more forward than the flooded evaporator 4, the condenser 2 is also more forward, the three are connected through refrigerant pipelines to form a ring, and the occupied space is small. A chilled water inlet and a chilled water outlet of the flooded evaporator 4 extend out of the container 12 through chilled water pipelines, and the pipeline section of the chilled water pipeline, which is positioned in the container, adopts a copper pipe with spiral fins; a cooling water inlet and a cooling water outlet of the condenser 2 extend out of the container 12 through a cooling water pipeline, and a pipeline section of the cooling water pipeline, which is positioned in the container, adopts a red copper pipe with spiral fins; the chilled water inlet 7 and the chilled water outlet 8 of the chilled water pipeline and the cooling water inlet 9 and the cooling water outlet 10 of the cooling water pipeline are all positioned outside the tail part of the container 12, and the chilled water and the cooling water are conveniently and uniformly connected.
The low-resistance intelligent variable-frequency chilled water pump 5 is connected in series to a chilled water outlet pipe of the chilled water pipeline, so that the flooded evaporator 4 passively feeds water and actively drains water. The low-resistance intelligent variable-frequency cooling water pump 6 is connected in series to a cooling water inlet pipe of the cooling water pipeline, so that the condenser 2 is used for active water inlet and passive water drainage.
The central controller 11 adopts an independently developed programmable controller, and is respectively in control connection with the flooded evaporator 4, the magnetic suspension compressor 1, the condenser 2, the expansion valve 3, the low-resistance intelligent variable-frequency chilled water pump 5 and the low-resistance intelligent variable-frequency cooling water pump 6. The control connection includes automatically controlled connection, gas accuse connection, the combination of one or more in the liquid accuse connection, and this embodiment adopts automatically controlled, through the operation control panel control magnetic suspension compressor 1 on the well accuse ware 11, condenser 2, expansion valve 3, flooded evaporator 4, low resistance intelligence variable frequency chilled water pump 5, the operation of low resistance intelligence variable frequency cooling water pump 6, thereby can set up the parameter (for example power, temperature etc.) at control panel according to customer's demand simultaneously and control the refrigeration capacity, utilize electronic ammeter, electronic voltmeter, electronic thermometer, electronic pressure gauge etc. to monitor whole system simultaneously, for example information such as monitoring power, equipment temperature, trouble.
When the integrated intelligent cold station provided by the embodiment works, the flooded evaporator 4 evaporates and absorbs heat through the liquid refrigerant to cool the chilled water; the chilled water enters the flooded evaporator 4 from the chilled water inlet 7 under the driving of the low-resistance intelligent variable-frequency chilled water pump 5, and flows out from the chilled water outlet 8 after being cooled; the magnetic suspension compressor 1 receives the gaseous refrigerant from the flooded evaporator 4 and compresses the gaseous refrigerant into a high-temperature and high-pressure liquid refrigerant; the condenser 2 receives the high-temperature high-pressure liquid refrigerant from the magnetic suspension compressor 1, and cools the high-temperature high-pressure liquid refrigerant into a low-temperature high-pressure liquid refrigerator by using cooling water, the cooling water enters the condenser 2 from a cooling water inlet 9 under the drive of a low-resistance intelligent variable-frequency cooling water pump 6, and the cooling refrigerant flows out from a cooling water outlet 10; the expansion valve 3 receives the low-temperature high-pressure liquid refrigerant from the condenser 2, reduces the pressure of the low-temperature high-pressure liquid refrigerant into low-temperature low-pressure liquid refrigerant through throttling action, and sends the low-temperature low-pressure liquid refrigerant into the flooded evaporator 4; the central controller 11 centrally controls each component, monitors the whole system, and controls the refrigerating capacity according to the requirements of the user side.
The integrated intelligent cold station provided by the embodiment integrates a core component flooded evaporator 4, a magnetic suspension compressor 1, a condenser 2, an expansion valve 3, a low-resistance intelligent variable-frequency chilled water pump 5 and a low-resistance intelligent variable-frequency chilled water pump 6 into a container 12, when a cold station is needed in a certain workshop or engineering, the container 12 is directly transported to a specified position, and cooling water and chilled water are connected for use; the intelligent central controller 11 is arranged to realize centralized control and monitor the whole system, so that the intelligent degree is high, and further group control can be realized for projects of a plurality of containers; the water and electricity are divided into two parts, such as cooling water and chilled water, at the tail part of the container 12, and the central controller 11 is arranged at the front end of the container 12, so that the debugging is more convenient; the advanced magnetic suspension compressor 1 is adopted, lubricating oil is not needed, operation, maintenance and maintenance are simple and convenient, the COP of the system is improved, the refrigeration efficiency of the equipment is not attenuated along with the service time basically, and the energy consumption of the whole life cycle of the equipment is reduced; the intelligent frequency conversion control is directly carried out on the low-resistance intelligent frequency conversion refrigerating water pump 5 and the low-resistance intelligent frequency conversion cooling water pump 6 by adopting the central controller 11, so that an upper computer in a traditional cold station can be reduced; the cold station can be used in factories or projects with complete facilities, can also be used in places such as sloping fields, grasslands, mudflats and the like which temporarily need cold stations, is suitable for various scenes on the whole, and has wide application range.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (8)
1. The utility model provides an integral type wisdom cold station, its characterized in that, includes container, flooded evaporator, magnetic suspension compressor, condenser, expansion valve and accuse ware are all integrated to be installed in the container, well accuse ware respectively with flooded evaporator, magnetic suspension compressor, condenser and expansion valve control connection, the refrigerant export of flooded evaporator with the refrigerant entry intercommunication of magnetic suspension compressor, the refrigerant export of magnetic suspension compressor with the refrigerant entry intercommunication of condenser, the refrigerant export of condenser concatenate behind the expansion valve with the refrigerant entry intercommunication of flooded evaporator.
2. The integrated intelligent cold station of claim 1, wherein the chilled water inlet and outlet of the flooded evaporator extend to the outside of the container through a chilled water pipeline, the pipeline section of the chilled water pipeline, which is located inside the container, adopts a copper tube with spiral fins, the cooling water inlet and outlet of the condenser extend to the outside of the container through a cooling water pipeline, and the chilled water inlet and outlet of the chilled water pipeline and the cooling water inlet and outlet of the cooling water pipeline are located on the same side of the container.
3. The integrated intelligent cold station as claimed in claim 2, further comprising a low resistance intelligent variable frequency chilled water pump connected in series to a chilled water outlet pipe of the chilled water pipeline, wherein the central controller is connected to the low resistance intelligent variable frequency chilled water pump.
4. The integrated intelligent cold station as claimed in claim 2, further comprising a low resistance intelligent variable frequency cooling water pump connected in series to the cooling water inlet pipe of the cooling water pipeline, wherein the central controller is in control connection with the low resistance intelligent variable frequency cooling water pump.
5. The integrated intelligent cold station of claim 1, wherein the central controller is installed at one end side inside the container, and a control panel of the central controller is exposed from the inside of the container.
6. The integrated intelligent cold station of claim 1, wherein the magnetic levitation compressor is an intelligent magnetic levitation compressor.
7. The integrated intelligent cold station of claim 1, wherein a refrigerant outlet of the flooded evaporator and a refrigerant inlet of the magnetic levitation compressor, a refrigerant outlet of the magnetic levitation compressor and a refrigerant inlet of the condenser, a refrigerant inlet of the condenser and the expansion valve, and a refrigerant inlet of the flooded evaporator are respectively communicated through different refrigerant pipelines.
8. The integrated intelligent cold station as claimed in claim 1, wherein the central controller is an independently developed programmable controller, the control connection includes one or more of an electric control connection, a pneumatic control connection and a hydraulic control connection, and the central controller is used for controlling the operation of each device and controlling the cooling capacity, and monitoring the whole system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210712877.8A CN115111793A (en) | 2022-06-22 | 2022-06-22 | Cold station of integral type wisdom |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210712877.8A CN115111793A (en) | 2022-06-22 | 2022-06-22 | Cold station of integral type wisdom |
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| Publication Number | Publication Date |
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| CN115111793A true CN115111793A (en) | 2022-09-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN202210712877.8A Pending CN115111793A (en) | 2022-06-22 | 2022-06-22 | Cold station of integral type wisdom |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201463387U (en) * | 2009-08-18 | 2010-05-12 | 广州恒星冷冻机械制造有限公司 | Bi-circulating industrial water chiller |
| US20120266621A1 (en) * | 2009-11-25 | 2012-10-25 | Daikin Industries, Ltd. | Container refrigeration system |
| CN204574589U (en) * | 2015-03-26 | 2015-08-19 | 江苏雪莲人工环境科技有限公司 | A kind of air conditioner water cold group system |
| CN205718035U (en) * | 2016-05-11 | 2016-11-23 | 深圳市安格斯机械有限公司 | Integral type screw rod Cool-water Machine for Industry |
| CN209230106U (en) * | 2018-11-05 | 2019-08-09 | 北京京天智慧能源发展有限公司 | Wisdom energy unit based on Internet of Things |
| CN213901319U (en) * | 2020-12-17 | 2021-08-06 | 山东金孚瑞热能科技集团有限公司 | Container type efficient integrated refrigerating station |
| CN216203934U (en) * | 2021-10-11 | 2022-04-05 | 河南晶锐冷却技术股份有限公司 | Integrated cold station |
-
2022
- 2022-06-22 CN CN202210712877.8A patent/CN115111793A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201463387U (en) * | 2009-08-18 | 2010-05-12 | 广州恒星冷冻机械制造有限公司 | Bi-circulating industrial water chiller |
| US20120266621A1 (en) * | 2009-11-25 | 2012-10-25 | Daikin Industries, Ltd. | Container refrigeration system |
| CN204574589U (en) * | 2015-03-26 | 2015-08-19 | 江苏雪莲人工环境科技有限公司 | A kind of air conditioner water cold group system |
| CN205718035U (en) * | 2016-05-11 | 2016-11-23 | 深圳市安格斯机械有限公司 | Integral type screw rod Cool-water Machine for Industry |
| CN209230106U (en) * | 2018-11-05 | 2019-08-09 | 北京京天智慧能源发展有限公司 | Wisdom energy unit based on Internet of Things |
| CN213901319U (en) * | 2020-12-17 | 2021-08-06 | 山东金孚瑞热能科技集团有限公司 | Container type efficient integrated refrigerating station |
| CN216203934U (en) * | 2021-10-11 | 2022-04-05 | 河南晶锐冷却技术股份有限公司 | Integrated cold station |
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