CN207936542U - A kind of low temperature natural coldness resource utilizing system - Google Patents
A kind of low temperature natural coldness resource utilizing system Download PDFInfo
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- CN207936542U CN207936542U CN201721492918.8U CN201721492918U CN207936542U CN 207936542 U CN207936542 U CN 207936542U CN 201721492918 U CN201721492918 U CN 201721492918U CN 207936542 U CN207936542 U CN 207936542U
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- refrigerating medium
- low temperature
- cooling tower
- temperature
- cooling
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Abstract
The utility model discloses a kind of low temperature natural coldness resource utilizing systems, including natural cooling source system, refrigeration unit system and control system.In cold season, when outdoor air wet bulb temperature reaches certain condition, the refrigerating medium to flow through cooling tower provides industrial production required refrigeration duty directly or indirectly to refrigeration system end cooling, and other times open refrigeration unit and provide refrigeration duty.Control system carries out automatically controlling natural cooling source system and refrigeration unit system operation situation according to climate change, to meet requirement of the production technology to cryogenic temperature and refrigerating capacity.The utility model point can meet 0 DEG C of cryogenic temperature requirement below in production process using the low temperature natural cooling source in winter, and system structure is simple, and system effectiveness is high, reduces the energy consumption of refrigeration unit, energy-saving effect is notable.
Description
Technical field
The utility model belongs to refrigerated energy-saving field, more particularly to a kind of low temperature natural coldness resource utilizing system.
Background technology
In industrial processes, refrigeration application is extensive.Such as in chemical industry, the liquefaction of gas, mixed gas separation, salt
During class crystallization, lubricating oil degreasing, the cooling of certain chemical reaction processes, absorbing reaction heat and control reaction speed etc., all
It needs to apply Refrigeration Technique.In addition, petroleum cracking, synthetic rubber, synthetic resin, chemical fertilizer, natural gas liquefaction, storing are also required to make
It is cold.It is most of in industrial processes traditional at present to be freezed using electric compression refigerating machine group or absorption refrigeration unit,
It needs to consume a large amount of electric power or steam.Contain a large amount of natural cooling source in winter north cold gas, when outdoor wet bulb (or
Dry-bulb temperature) less than refrigeration design temperature and when reaching certain numerical value, it can be direct with the sub-cooled solution for flowing through cooling tower
Cold is provided for building or process system, i.e., replaces refrigeration machine cooling with cooling tower.The technology takes full advantage of outdoor
Natural cold source saves the high power consumption of refrigeration unit, has prodigious energy-saving potential.
As CN201120449431.8 discloses a kind of air conditioner energy-saving system using natural cooling source, including indoor heat exchanger
It is connected with the cold side of indoor heat exchanger with the freezing water circulation pipe of outdoor cooling system, outdoor cooling system, wherein described
Outdoor cooling system include by piping connection together include cooling-water machine, chilled water pump, cooling tower and pipeline level pressure equipment,
The cooling tower is connected with cooling-water machine by chilled water pipeline.This air conditioner energy-saving system using natural cooling source is in outdoor wet bulb
When temperature is relatively low, start cooling tower, natural cooling source can be utilized to reduce the return water temperature of chilled water, fully reduce the system of cooling-water machine
Refrigeration duty can close cooling-water machine when cooling tower leaving water temperature can reach cooling-water machine leaving water temperature, realize safe and efficient profit
Use natural cooling source.
CN201620385131.0 discloses a kind of energy conserving system of data-center applications natural cooling source heat exchange comprising room
Outer wind system and indoor wind system, the indoor wind system are connected with data center machine room, the outdoor wind system and room
Interior wind system is connected by heat exchanger carries out heat exchange.The utility model is arranged outside data center machine room roof, section
Indoor computer room space is saved, annual can be run, data center's energy consumption for cooling is reduced；When outdoor temperature is relatively low, room can be fully utilized
Outer natural cooling source cools down, and stops mechanical refrigeration, energy-efficient.
CN201521026978.1 discloses a kind of natural cooling source cooling system for Various types of data computer room, including outdoor
Condenser, indoor evaporator and hot superconduction circulator, outdoor condensator outlet in hot superconduction circulator communication chamber by steaming
The entrance of device is sent out, the outlet of indoor evaporator forms circulation closed system, cycle by the entrance of pipeline communication chamber external condenser
Hot superconducting material heat exchange working medium is filled in closed system；Outdoor condenser is air cooled condenser or water cooled condenser.This
Utility model is radiated using natural cooling source and can realize that heat exchange does not take a breath to ensure building environment requirement, and system is without high-power consumption
The usage time of air-conditioning in computer room is greatly reduced in electrical components, to reduce computer room power consumption；Overall structure is simple, compact, system
It makes at low cost；Increase with heat exchange amount, systematic energy efficiency ratio can rise, and COP when normal operation, which is generally higher than, compresses refrigeration, this will most
Limits reduce computer room PUE values, reduce the input cost of computer room heat dissipation.
CN201621321744.4 discloses a kind of empty using natural cooling source and the lower blast type phase-change accumulation energy of Gu Feng electricity prices
It adjusts, including cabinet, the first centrifugal fan, evaporator, phase-change heat-exchange module and the second centrifugal fan；Described first is centrifugal
Wind turbine, evaporator, phase-change heat-exchange module, the second centrifugal fan are sequentially arranged in cabinet from top to bottom；The evaporator is logical
Pipeline is crossed to connect with the condenser of refrigeration unit, throttle part, compressor；The utility model is according to the natural ring in Different climate area
Border condition makes full use of extraneous free natural cooling source, efficiency of energy utilization high；The utility model makes full use of the night external world low
Warm air carries out cold-storage, and releases cold in the high temperature period on daytime, substantially saves the refrigeration compressor opening time on daytime, saves
Power consumption；In the area for carrying out time-of-use tariffs, night low rate period is made full use of to use refrigeration compressor cold-storage, and in white
Its high rate period is let cool, and saves a large amount of electric cost expenditures for user, while displaced peak value power consumption.
CN201520826527.X disclose it is a kind of utilize air natural cooling source increase worker quality liquid degree of supercooling it is heating
Each component of heat pump system, this system constitutes closed working cycles circuit, when which heats in winter, worker quality liquid
It needs to first pass through at least one in wind-cooled evaporator before into restricting element, with the lower air of temperature and goes the low pressure of compressor
Working medium gas generates heat exchange, and the section of remaining in wind-cooled evaporator could be entered after so that the degree of supercooling of worker quality liquid is significantly increased
Fluid element enters wind-cooled evaporator after reducing pressure by regulating flow, absorbs the low grade heat energy in air, is promoted after temperature in water-cooled condenser
In be released to heating hot water；The system makes full use of air natural cooling source to increase the supercooling into restricting element worker quality liquid
Degree effectively improves the efficiency level and reliability of its operation.
CN201420378372.3 discloses a kind of type pit cooling system converted using winter natural cooling source, it is wrapped
Include be arranged ground natural refrigeration system and refrigeration unit and efeated cooling system of heat exchange in underground is set；Wherein freeze naturally
System is made of ground heat exchanger, cooling tower, spray equipment and collecting-tank；Efeated cooling system of heat exchange is included in the height of underground setting
The air cooler and wind turbine for pressing heat exchanger, working face in the pit to be arranged；Cooling tower and spray equipment are exchanged heat by valve in parallel on ground
On device shell side；Refrigeration unit is connected in parallel in the tube side pipeline of high-low pressure heat exchanger.The utility model takes full advantage of winter nature
Low-temperature receiver is cooled down when temperature on well is less than 10 DEG C using ground Temperature fall system, and temperature is higher than 10 DEG C on well, opens
Dynamic refrigeration unit, to realize annual cooling, operating cost is low, good cooling effect, and running equipment is only water circulating pump and spray
The water pump of device, cost of investment is low, system run all right is reliable.
In conclusion existing natural coldness resource utilizing technology is also required to the application of cooling generally directed to winters such as data center modules
Place, cryogenic temperature is higher than 0 DEG C, using water as refrigerating medium.But the cryogenic temperature in industrial production cooling procedure is often less than 0
DEG C, and refrigeration demand whole year have.Since water can freeze at 0 DEG C or less, traditional natural coldness resource utilizing technology can not expire
Refrigeration demand in some industrial processes of foot.
Utility model content
Purpose of utility model：It is that it is naturally cold to provide a kind of low temperature for deficiency existing for above-mentioned existing natural coldness resource utilizing
Source utilizes system, the system not only to take full advantage of winter free natural cooling source, but also can apply to 0 DEG C or less refrigeration need to
In the industrial production asked.
To achieve the goals above, low temperature natural coldness resource utilizing system provided by the utility model, which is characterized in that including
Natural cooling source system, refrigeration unit system and control system, wherein：
The natural cooling source cooling system includes the refrigerating medium cooling tower being sequentially connected, low temperature refrigerating medium tank, heat exchanger
With high temperature refrigerating medium tank, the high temperature refrigerating medium tank is connected by high temperature coolant pump with refrigerating medium cooling tower；It is described naturally cold
Source cooling system can be unsatisfactory for requiring and night gas by the way that low temperature refrigerating medium tank and high temperature refrigerating medium tank is arranged in daytime temperature
The case where temperature is met the requirements carries out night cold-storage.
The refrigeration unit cooling system includes the evaporator being sequentially connected, compressor, condenser, water circulating pump and follows
Ring water cooling tower, the evaporator are connected with condenser respectively at throttling set；
The control system runs shape according to climate change to natural cooling source cooling system and refrigeration unit cooling system
Condition carries out automatically controlling, when wet-bulb temperature is less than 2~3 DEG C of technological requirement cryogenic temperature outside winter and conditioning in Transition Season room, open from
Right low-temperature receiver cooling system freezes, and other times section unlatching refrigeration unit system is freezed.
Specifically, the refrigerating medium is the fluid that freezing point is less than 0 DEG C.Wherein, the concentration of refrigerating medium is according to technological requirement
Cryogenic temperature determines.
In some embodiments, the refrigerating medium is ethylene glycol solution or ammonium hydroxide.
Since ethylene glycol solution, ammonium hydroxide etc. have volatility, if directly carrying out spraying cooling with open cooling tower can cause
A small amount of refrigerating medium is elegant in air, and surrounding devices are caused to corrode or be polluted, therefore refrigerating medium cooling tower in the utility model
Using closed cooling tower.In addition consider that some regional winter wet-bulb temperature are relatively low, to prevent spray medium from freezing, refrigerating medium is cold
But tower uses dry type sealed cooling tower pattern.
The control system monitors acquisition outside air temperature, humidity and refrigerant temperature and flow parameter in real time, and passes through
The fan frequency conversion for controlling the refrigerating medium cooling tower adjusts the refrigerating capacity and cryogenic temperature of the low temperature natural coldness resource utilizing system
Specifically, in use, wet-bulb temperature is less than 2~3 DEG C of technological requirement cryogenic temperature in winter and outside conditioning in Transition Season room
When, it opens natural cooling source system and freezes, other times section unlatching refrigeration unit system is freezed.When natural cooling source system
When unlatching, the refrigerating medium cooling tower outlet is connected with refrigerating medium circulating pump, and the refrigerating medium is after cooling tower cooler by low temperature
Refrigerating medium is pumped to low temperature refrigerating medium tank, and the low temperature refrigerating medium enters high temperature refrigerating medium tank after exchanging heat in heat exchanger, described
High temperature refrigerating medium is pumped to refrigerating medium cooling tower by high temperature refrigerating medium tank and cools down.
The wind turbine of refrigerating medium cooling tower does Frequency Conversion Design, is carried out according to outdoor air wet bulb temperature and refrigerating medium outlet temperature
Frequency conversion.Refrigerating medium cooling tower amount of cooling water changes with weather, and setting robot control system(RCS) meets the regulation and control requirement under the conditions of Different climate.
Robot control system(RCS) monitors the parameters such as acquisition outside air temperature, humidity and refrigerant temperature, flow in real time, and passes through and control the load
The refrigerating capacity and cryogenic temperature of low temperature natural coldness resource utilizing system described in cryogen blower fan of cooling tower variable frequency adjustment.
Advantageous effect：Compared with prior art, the utility model has the following advantages that：
(1) cold for making full use of natural cooling source outside winter room reduces the energy consumption of refrigeration unit, has preferable energy saving
Benefit；
(2) refrigerating medium can meet in production process 0 DEG C using lower media of freezing points such as brine, ethylene glycol solution, ammonium hydroxide
Cryogenic temperature requirement below；
(3) refrigerating medium cooling tower uses dry type sealed cooling tower form, avoids spray medium elegant or volatilizees to surrounding
Environment impacts；
(4) it uses automatic control system according to climate change real-time regulating system operating status, keeps natural cooling source system sharp
Reach highest with rate, energy-saving benefit maximizes；
(5) low temperature refrigerating medium tank and high temperature refrigerating medium tank are set, the work with accumulation of energy and balance refrigerant temperature, flow
With making system stable operation.
(6) the utility model is simple in structure and practical, versatile, both can be used for the design of new system, can also
For the transformation to existing system.
Description of the drawings
Fig. 1 is a kind of low temperature natural coldness resource utilizing system schematic, wherein：1, refrigerating medium cooling tower, 2, low temperature coolant pump,
3, low temperature refrigerating medium tank, 4, heat exchanger, 5, high temperature refrigerating medium tank, 6, high temperature coolant pump, 7, evaporator, 8, compressor, 9, cold
Condenser, 10, throttling set, 11, water circulating pump, 12, circulating water cooling tower, 13 refrigerating medium circulating pumps.
Specific implementation mode
Utility model is described further in the following with reference to the drawings and specific embodiments, but not as to the utility model
It limits.
As shown in Figure 1, when wet-bulb temperature is less than 2~3 DEG C of technological requirement cryogenic temperature outside winter and conditioning in Transition Season room, high temperature carries
After cryogen reaches the cryogenic temperature of technological requirement after the cooling of refrigerating medium cooling tower 1, is sent to low temperature and carry by low temperature coolant pump 2
Cryogen tank 3.With after process heat fluid heat transfer in heat exchanger 4, refrigerant temperature is increased into high temperature refrigerating medium low temperature refrigerating medium
Tank 5.High temperature refrigerating medium is sent to refrigerating medium cooling tower 1 by high temperature coolant pump 6 by high temperature refrigerating medium tank 5 and cools down.
As shown in Figure 1, when wet-bulb temperature is higher than technological requirement cryogenic temperature outside hot season room, natural cooling source system stops fortune
Row, refrigeration unit open, high temperature refrigerating medium from high temperature refrigerating medium tank 5 enter refrigeration unit evaporator 7 in cool down, then
It is sent into low temperature refrigerating medium tank 3 by refrigerating medium circulating pump 13.Low temperature refrigerating medium in heat exchanger 4 with after process heat fluid heat transfer,
Refrigerant temperature, which increases, enters high temperature refrigerating medium tank 5, forms a refrigeration cycle.If electricity price, there are peak valley price differential, night can
To carry out cold-storage with trough-electricity using low temperature refrigerating medium tank 3, refrigeration unit operating cost is reduced.
Refrigerating medium includes the lower fluid of the freezing points such as ethylene glycol solution, ammonium hydroxide, and concentration is according to the cryogenic temperature of technological requirement
It determines, and combines local climate condition, it is ensured that do not freeze under most cold climate.To avoid elegant spray medium or volatilization and spray
It drenches medium to freeze, the refrigerating medium cooling tower 1 uses dry type sealed cooling tower.The wind turbine of refrigerating medium cooling tower 1 does frequency conversion and sets
Meter carries out frequency conversion according to outdoor air wet bulb temperature and refrigerating medium outlet temperature.
The amount of cooling water of refrigerating medium cooling tower 1 changes with weather, and the system running policy of the utility model is：
(1) cold season is transitioned by the hot season, natural cooling source cooling system night puts into operation, cold-storage is carried out, as weather becomes
Cold, the gradual off-load of refrigeration unit is until all stop transport；
(2) after refrigeration unit is all stopped transport, temperature further declines, and refrigerant temperature also declines therewith, leads to refrigerating
When agent temperature is down to design cryogenic temperature or less, the wind turbine of refrigerating medium cooling tower reduces rotating speed by frequency modulation, to ensure refrigerating medium
Temperature controls in claimed range；
(3) after refrigerating medium blower fan of cooling tower is stopped transport, when refrigerant temperature is still down to design cryogenic temperature or less, in refrigerating
Agent cooling tower air inlet, which increases the modes such as wind shield, prevents refrigerating medium from freezing；
(4) when rising to design cryogenic temperature or more with the warm refrigerant temperature of weather turn, then refrigerating medium cooling tower is opened
Wind turbine；
(5) when the wind turbine of refrigerating medium cooling tower reaches rated speed, when still cannot meet the requirements, refrigeration unit input
Operation, two systems are run simultaneously；
(6) when being transitioned into the hot season by cold season, natural cooling source cooling system is out of service, and refrigeration unit is all turned on.
Embodiment described above, only one kind of the utility model more preferably specific implementation mode, the skill of this field
The usual variations and alternatives that art personnel carry out within the scope of this technical scheme all should include within the protection scope of the present utility model.
Claims (6)
1. a kind of low temperature natural coldness resource utilizing system, which is characterized in that including natural cooling source system, refrigeration unit system and control
System, wherein：
The natural cooling source cooling system includes the refrigerating medium cooling tower being sequentially connected, low temperature refrigerating medium tank, heat exchanger and height
Warm refrigerating medium tank, the high temperature refrigerating medium tank are connected by high temperature coolant pump with refrigerating medium cooling tower；
The refrigeration unit cooling system includes the evaporator being sequentially connected, compressor, condenser, water circulating pump and recirculated water
Cooling tower, the evaporator and condenser are connected with throttling set respectively；
The control system monitors acquisition outside air temperature, humidity and refrigerant temperature and flow parameter in real time, and passes through control
The fan frequency conversion for making the refrigerating medium cooling tower adjusts the refrigerating capacity and cryogenic temperature of the low temperature natural coldness resource utilizing system.
2. low temperature natural coldness resource utilizing system according to claim 1, which is characterized in that the refrigerating medium is less than for freezing point
0 DEG C of fluid.
3. low temperature natural coldness resource utilizing system according to claim 1, which is characterized in that the refrigerating medium is that ethylene glycol is molten
Liquid or ammonium hydroxide.
4. low temperature natural coldness resource utilizing system according to claim 1, which is characterized in that the refrigerating medium cooling tower uses
Sealed cooling tower.
5. low temperature natural coldness resource utilizing system according to claim 4, which is characterized in that the refrigerating medium cooling tower uses
Dry type sealed cooling tower.
6. low temperature natural coldness resource utilizing system according to claim 1, which is characterized in that the refrigerating medium cooling tower 1
Wind turbine carries out frequency conversion according to outdoor air wet bulb temperature and refrigerating medium outlet temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721492918.8U CN207936542U (en) | 2017-11-10 | 2017-11-10 | A kind of low temperature natural coldness resource utilizing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721492918.8U CN207936542U (en) | 2017-11-10 | 2017-11-10 | A kind of low temperature natural coldness resource utilizing system |
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| Publication Number | Publication Date |
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| CN207936542U true CN207936542U (en) | 2018-10-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721492918.8U Expired - Fee Related CN207936542U (en) | 2017-11-10 | 2017-11-10 | A kind of low temperature natural coldness resource utilizing system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107906785A (en) * | 2017-11-10 | 2018-04-13 | 南京南瑞集团公司节能环保分公司 | A kind of low temperature natural coldness resource utilizing system and method |
| WO2020140314A1 (en) * | 2019-01-04 | 2020-07-09 | 青岛海尔空调电子有限公司 | Refrigeration system |
-
2017
- 2017-11-10 CN CN201721492918.8U patent/CN207936542U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107906785A (en) * | 2017-11-10 | 2018-04-13 | 南京南瑞集团公司节能环保分公司 | A kind of low temperature natural coldness resource utilizing system and method |
| WO2020140314A1 (en) * | 2019-01-04 | 2020-07-09 | 青岛海尔空调电子有限公司 | Refrigeration system |
| US20210389026A1 (en) * | 2019-01-04 | 2021-12-16 | QlNGDAO HAIER AIR-CONDITIONING ELECTRONIC CO., LTD | Refrigeration system |
| US11994318B2 (en) * | 2019-01-04 | 2024-05-28 | Qingdao Haier Air-Conditioning Electronic Co., Ltd. | Refrigeration system |
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181002 Termination date: 20211110 |