CN206787101U - A kind of magnetic suspension variable-frequency central air conditioner refrigeration system - Google Patents
A kind of magnetic suspension variable-frequency central air conditioner refrigeration system Download PDFInfo
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- CN206787101U CN206787101U CN201720389722.XU CN201720389722U CN206787101U CN 206787101 U CN206787101 U CN 206787101U CN 201720389722 U CN201720389722 U CN 201720389722U CN 206787101 U CN206787101 U CN 206787101U
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Abstract
The utility model discloses a kind of magnetic suspension variable-frequency central air conditioner refrigeration system, including magnetic suspension centrifugal compressor, evaporator, condenser, throttling arrangement；Evaporator, magnetic suspension centrifugal compressor, condenser, throttling arrangement pass through the end to end circulation loop for forming refrigerant liquid of pipeline respectively；The input of evaporator is connected by chilled water return pipe with refrigerant-cycle systems, output end is connected by chilled water feed pipe with user terminal；Refrigerant-cycle systems, evaporator, user terminal, which are sequentially connected, collectively forms freezing water-flow circuit；The input, output end of condenser is connected by CWR, cooling water supply pipe with cooling tower respectively；The power output of cooling tower is 4KW；Condenser is interconnected to constitute the cooling system of refrigerant with cooling tower.The utility model has the advantages of reasonable refrigeration unit efficiency height, lectotype selection, heavy-duty service, low conveying energy, and the building being widely portable in the fields such as industry, business is freezed.
Description
Technical field
A kind of refrigeration system, more particularly to a kind of magnetic suspension variable-frequency central air conditioner refrigeration system are the utility model is related to, is belonged to
In air-conditioner set technical field.
Background technology
Heat is set to be transferred to the higher material of temperature (or ring from the relatively low material of temperature (or environment) using outside energy
Border) system suitable work can be provided for large scale equipment plant area or clerical workforce in summer refrigeration system, refrigeration system
Make temperature.But the refrigeration system in existing building is mostly using steam compression type central air conditioning equipment as core, this legacy equipment
Although being widely used to the every field in people's daily life and industry, it is caused big in use
Energy consumption also becomes the problem of people have to take into account that.The Energy Efficiency Ratio of conventional vapor-compression central air conditioning equipment is relatively low,
Load can be caused to surge in peak times of power consumption, and equipment be present and auxiliary facility model is bigger than normal, circuit design is unreasonable
(pipeline detour is excessive, insulation deficiency etc. causes thermal loss), the problems such as operational management is improper, cause it actual in civil buildings
There is the defects of operating cost is high, regular maintenance is complicated, big, the digital control underaction that accounts for machine room area in.
Utility model content
In order to solve weak point of the above-mentioned technology in the presence of practical engineering application, the utility model provides one kind
Magnetic suspension variable-frequency central air conditioner refrigeration system.
In order to solve the above technical problems, the technical solution adopted in the utility model is：A kind of magnetic suspension frequency conversion central hollow
Modulate cooling system, including magnetic suspension centrifugal compressor, evaporator, condenser, throttling arrangement；Magnetic suspension centrifugal compressor, evaporation
Device, condenser, throttling arrangement collectively constitute magnetic suspension convertible frequency air-conditioner unit；
Evaporator, magnetic suspension centrifugal compressor, condenser, throttling arrangement pass through the end to end composition refrigerant of pipeline respectively
The circulation loop of liquid；The input of evaporator is connected by chilled water return pipe with refrigerant-cycle systems, output end is led to
Chilled water feed pipe is crossed with user terminal to be connected；Refrigerant-cycle systems, evaporator, user terminal, which are sequentially connected, collectively forms freezing
Water-flow circuit；
The input, output end of condenser is connected by CWR, cooling water supply pipe with cooling tower respectively；
The power output of cooling tower is 4KW；Condenser is interconnected to constitute the cooling system of refrigerant with cooling tower.
The first cooling pump is provided between evaporator and refrigerant-cycle systems.
The power output of first cooling pump is 11kw.
The second cooling pump is provided between condenser and cooling tower.
The power output of second cooling pump is 11kw.
The utility model is comprehensive, system analyzes building function industry situation, equipment design selection, air-conditioning equipment system operation
Situations such as data, cold war operation control strategy, by scheme comparison and Datum Argument (simulation of energy consumption), to build refrigeration system amount
Body has customized reducing energy consumption scheme, can effectively solve that refrigeration unit efficiency is low, lectotype selection does not meet what actual conditions were brought
Underrun, conveying can it is high the problems such as, finally ensure that reducing energy consumption effect, realize building energy consumption significantly reduce, day
Often safeguard to simplify and lifted with indoor environmental quality.
Brief description of the drawings
Fig. 1 is overall structure block diagram of the present utility model.
In figure：1st, magnetic suspension centrifugal compressor；2nd, condenser；3rd, evaporator；4th, throttling arrangement；5th, the first cooling pump；6、
Second cooling pump；7th, cooling tower.
Embodiment
The utility model is described in further detail with reference to the accompanying drawings and detailed description.
As shown in figure 1, the utility model includes magnetic suspension centrifugal compressor 1, evaporator 3, condenser 2, throttling arrangement 4；
Magnetic suspension centrifugal compressor 1, evaporator 3, condenser 2, throttling arrangement 4 collectively constitute magnetic suspension convertible frequency air-conditioner unit.Magnetic suspension
The use of convertible frequency air-conditioner unit not only greatly improves the overall performance of air-conditioning system, and in combination with the operation reserve at cold station
Optimization, so as to realize the lifting of cold war system entirety efficiency (whole cooling season EER is up to 5.3) (EER=refrigerating capacitys/air-conditioning system
System gross electric capacity, EER is higher, and the more heat of evaporation absorption or compressor are consumed electric less in expression air-conditioning), reach phase
Outstanding level in the standard of pass, the air conditioning energy consumption in building can be not only significantly reduced, more ensure that the temperature stability of interior,
Improve the comfortableness of indoor environment.
Evaporator 3, magnetic suspension centrifugal compressor 1, condenser 2, throttling arrangement 4 are made by end to end form of pipeline respectively
The circulation loop of cryogen liquid.In evaporator 3 with low temperature and cooled object heat exchange occurs for refrigerant liquid first, absorbs
Gasify after the heat of cooled object, caused low-pressure steam is sucked by magnetic suspension centrifugal compressor 1, after compression with high pressure gas
Body is discharged；The high-pressure gaseous refrigerant that magnetic suspension centrifugal compressor 1 is discharged enters condenser 2, by the cooling water cooling of normal temperature, coagulates
Form highly pressurised liquid；Highly pressurised liquid flows through the throttling action of throttling arrangement 4, and the gas-fluid two-phase mixture for becoming low-pressure low-temperature enters
Evaporator 3, liquid refrigerant therein are exchanged heat in evaporator 3 with chilled water, and sweat cooling, caused low-pressure gas is again
It is secondary to be sucked by magnetic suspension centrifugal compressor 1；So go round and begin again, constantly circulation, realize the circularly cooling of refrigerant liquid.
The input of evaporator 3 is connected by chilled water return pipe with refrigerant-cycle systems, and cooled object passes through
Chilled water return pipe is fully exchanged heat in evaporator 3 with refrigerant liquid, forms low-temperature air conditioner chilled water；Evaporator 3
Output end is connected by chilled water feed pipe with user terminal, and low-temperature air conditioner chilled water is by chilled water feed pipe by user terminal
Heat is taken away.
The first cooling pump 5 is provided between evaporator 3 and refrigerant-cycle systems；First cooling pump 5 is two, and one with one
It is standby；The power output of first cooling pump 5 is 11kw.Refrigerant-cycle systems, evaporator 3, user terminal are sequentially connected and collectively formed
Freeze water-flow circuit；Cooled object is after chilled water return pipe is delivered to evaporator 3, with the refrigerant in evaporator 3
Heat exchange occurs for liquid, and the cooled object after cooling is distributed to each user terminal by chilled water feed pipe again to be carried for user
Cooling air, realize refrigeration, cooling.
The input, output end of condenser 2 is connected by CWR, cooling water supply pipe with cooling tower 7 respectively
Connect；The power output of cooling tower 7 is 4KW；The second cooling pump 6 is provided between condenser 2 and cooling tower 7.Second cooling pump 6
Power output is 11kw.Condenser 2 is interconnected to constitute cooling system (the also known as cooling water circulation system of refrigerant with cooling tower 7
System).Refrigerant is made by the compression of magnetic suspension centrifugal compressor 1 first after heat exchange occurred with cooled object
With generation high-pressure gaseous refrigerant, high-pressure gaseous refrigerant by the cooling water cooling of normal temperature in condenser 2, condenses into high pressure liquid again
Body, the last sweat cooling in evaporator 3, and the source of normal temperature cooling water comes from cooling tower 7 in condenser 2, by cold
But tower 7 realizes cooling water and extraneous heat exchange, by the heat transfer in refrigerant into air.
Whole structure of the present utility model is further elaborated below by specific embodiment：
Embodiment one：
Qingdao Garden Hotel VIP Building is located at Qingdao City Chiayi road east side, sanatorium of Shandong oil company southern side.The project
It is the comprehensive tier building for integrating leisure, food and drink, lodging.5 layers on the ground of project, B1.Basement is bathing, trip
Swimming, leisure and device rooms, one layer be hall, bar, coffee bar, meeting and service office occupancy, two layers be food and drink, kitchen,
Three~five layers are guest room.Project height 23.85m2, construction area 9261.16m2, wherein basement construction area 1625.44m2。
Structure type is frame structure, isolated footing.
Before transformation, the engineering VIP Building summer is used using natural gas direct combustion engine cooling and for domestic hot-water in building, winter
Central Air-Conditioner is heated and domestic hot-water supply, conditioning in Transition Season Central Air-Conditioner are not turned on, using swimming pool natural gas boiler for domestic hot-water in building.Through
Following defect be present in analysis, the refrigeration system of the engineering：
(1) design of air conditioning load is bigger than normal, and ((refrigerating capacity/input power) is low by Central Air-Conditioner COP
The Design cooling load of Central Air-Conditioner is 1132kW, but the peak value refrigeration duty in cooling season in 2015 building is 436kW or so, no
And the half of Design cooling load.Design cooling load is seriously bigger than normal, and cold is in low load operational state throughout the year, is unfavorable for energy saving of system.
The Energy Efficiency Ratio (EER) of air-conditioning system is smaller, and averagely about 0.9.
(2) distributing system performance is relatively low
Cooling season freezing side transmission ＆ distribution coefficient is only 6 or so (state's scale value is 30), and cold side transmission ＆ distribution coefficient is only 13.In cold station
The power consumption of cold warm water pump is significantly bigger than normal, is run frequently surely according to 50Hz always after water pump attached with frequency converters, causes largely to waste.
(3) cooling tower water distribution is uneven
Cooling tower filler water inlet goes out to exist obvious water distribution uneven phenomenon, the water distribution of filler inside and cooling tower both sides
It is very unbalanced, have a strong impact on the heat exchange efficiency of cooling tower.Through measuring and calculating, cooling tower transmission ＆ distribution coefficient is higher, but current efficiency compared with
It is low, only 31%, have greater room for improvement.
(4) cooling system control strategy
Central Air-Conditioner start-up and shut-down control, frequency conversion equipment are run frequently surely, and control strategy is chaotic.
(5) operating cost is high
Estimated by on-the-spot test and historical data, VIP Building all-year-around cooling expense be 46.7 ten thousand yuan (gas price according to
Present 3.65 yuan every cube), operating cost is higher.
Refrigeration using the magnetic suspension variable-frequency central air conditioner refrigeration system in the utility model to engineering building in embodiment one
After system is transformed, specifically have the beneficial effect that：
(1) unit eer is high, and during operation at part load, unit COP reaches as high as 12, therefore operating cost drops significantly
It is low；
(2) transmission ＆ distribution coefficient is increased dramatically, and refrigerating water pump Transfer coefficient is by by 6 original liftings to 59.6, cooling water
Transfer coefficient, up to 5.3, will reach the outstanding water in standard by 14.5 original liftings to 82.7, cold station whole cooling season EER
It is flat, better than the cold station EER of most of buildings；
(3) the water distribution situation of cooling tower is obviously improved, and matches geomantic omen ratio 1.5 or so according to cooling water flow, is carried out
VFC, to lift efficiency of cooling tower；
(4) refrigeration unit by it is original it is low with the unmatched efficiency of actual energy for building, set the big Central Air-Conditioner of load and change into
The more energy-efficient magnetic suspension unit of closing to reality energy for building, optimizing cold station operation reserve, (it is continuous to change start-up and shut-down control
Control, feed back VFC according to load variations), realize that the cold overall efficiency in station will be obviously improved；
(5) it is only 21.4 ten thousand yuan to transform year after next cooling and domestic hot-water's operating cost, realizes the energy-conservation of 250,000 yuan/year
Amount, makes cooling+domestic hot-water's synthesis energy saving rate be up to 54.5%, energy-saving potential is very considerable
In addition, magnetic suspension convertible frequency air-conditioner unit also has magnetic suspension bearing without abrasion, saves lubrication cost, compact-sized,
Small volume, the advantages of being easily installed and transport.
Traditional reconstruction of existing building is usually local flow improvement, with more exchange device (air-conditioning equipment, lighting apparatus etc.), thermal insulating material
Based on material, not from Integral design for building, running situation, improve the overall energy-conservation of the analysis building of control strategy etc. system
Potentiality and reducing energy consumption measure, asked so that causing that reconstruction of existing building is not thorough, secondary transformation difficulty is big, amount of energy saving is small etc.
Topic.
And the utility model is then comprehensive, analyze building function industry situation, equipment design selection matching, the air-conditioning of system are set
Situations such as standby system operation data, cold war operation control strategy, by scheme comparison and Datum Argument (simulation of energy consumption), amount body is determined
Reducing energy consumption scheme is made, the excavation existing building energy-saving potential for maximizing, rationalizing, so as to solve refrigeration unit efficiency
Low, lectotype selection do not meet actual use can underrun caused by situation, the problems such as conveying energy consumption is high, finally ensure that energy-conservation
Correctional effect, realize building energy consumption significantly reduce, regular maintenance simplify with the lifting of indoor environmental quality, improve and build comprehensively
The quality built so that existing building " irradiating new life "；As Qingdao City's the first reconstruction of existing building application magnetic suspension frequency conversion center
The project of air-conditioning equipment, systemic, the comprehensive building energy-saving renovation pattern that it is used is also for numerous reconstruction of existing building items
Mesh, which maximized, rationalizes reducing energy consumption provides good mark post.
It is to be also not limited to the example above to limitation of the present utility model, the utility model that above-mentioned embodiment, which is not,
The variations, modifications, additions or substitutions that those skilled in the art are made in the range of the technical solution of the utility model,
Also the scope of protection of the utility model is belonged to.
Claims (5)
- A kind of 1. magnetic suspension variable-frequency central air conditioner refrigeration system, it is characterised in that：It includes magnetic suspension centrifugal compressor (1), steamed Send out device (3), condenser (2), throttling arrangement (4)；The magnetic suspension centrifugal compressor (1), evaporator (3), condenser (2), section Stream device (4) collectively constitutes magnetic suspension convertible frequency air-conditioner unit；The evaporator (3), magnetic suspension centrifugal compressor (1), condenser (2), throttling arrangement (4) pass through pipeline head and the tail phase respectively Connect the circulation loop for forming refrigerant liquid；The input of the evaporator (3) passes through chilled water return pipe and refrigerant circulation System is connected, output end is connected by chilled water feed pipe with user terminal；The refrigerant-cycle systems, evaporator (3), User terminal, which is sequentially connected, collectively forms freezing water-flow circuit；The input, output end of the condenser (2) passes through CWR, cooling water supply pipe and cooling tower (7) respectively It is connected；The power output of the cooling tower (7) is 4KW；The condenser (2) is interconnected to constitute refrigeration with cooling tower (7) The cooling system of agent.
- 2. magnetic suspension variable-frequency central air conditioner refrigeration system according to claim 1, it is characterised in that：The evaporator (3) The first cooling pump (5) is provided between refrigerant-cycle systems.
- 3. magnetic suspension variable-frequency central air conditioner refrigeration system according to claim 2, it is characterised in that：First cooling pump (5) power output is 11kw.
- 4. magnetic suspension variable-frequency central air conditioner refrigeration system according to claim 1, it is characterised in that：The condenser (2) The second cooling pump (6) is provided between cooling tower (7).
- 5. magnetic suspension variable-frequency central air conditioner refrigeration system according to claim 4, it is characterised in that：Second cooling pump (6) power output is 11kw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720389722.XU CN206787101U (en) | 2017-04-14 | 2017-04-14 | A kind of magnetic suspension variable-frequency central air conditioner refrigeration system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720389722.XU CN206787101U (en) | 2017-04-14 | 2017-04-14 | A kind of magnetic suspension variable-frequency central air conditioner refrigeration system |
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| Publication Number | Publication Date |
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| CN206787101U true CN206787101U (en) | 2017-12-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720389722.XU Expired - Fee Related CN206787101U (en) | 2017-04-14 | 2017-04-14 | A kind of magnetic suspension variable-frequency central air conditioner refrigeration system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116576603A (en) * | 2023-07-12 | 2023-08-11 | 北京英沣特能源技术有限公司 | Magnetic suspension phase change cooling system |
-
2017
- 2017-04-14 CN CN201720389722.XU patent/CN206787101U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116576603A (en) * | 2023-07-12 | 2023-08-11 | 北京英沣特能源技术有限公司 | Magnetic suspension phase change cooling system |
| CN116576603B (en) * | 2023-07-12 | 2023-09-15 | 北京英沣特能源技术有限公司 | Magnetic suspension phase change cooling 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: 20171222 Termination date: 20200414 |