CN105276728A - Two-level refrigerating heat exchange system - Google Patents
Two-level refrigerating heat exchange system Download PDFInfo
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- CN105276728A CN105276728A CN201510487351.4A CN201510487351A CN105276728A CN 105276728 A CN105276728 A CN 105276728A CN 201510487351 A CN201510487351 A CN 201510487351A CN 105276728 A CN105276728 A CN 105276728A
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- Prior art keywords
- heat exchanger
- evaporimeter
- heat
- chilling units
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
- F24F5/0035—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning using evaporation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/30—Arrangement or mounting of heat-exchangers
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Other Air-Conditioning Systems (AREA)
Abstract
The invention relates to the field of heat exchange equipment, in particular to a two-level refrigerating heat exchange system. The two-level refrigerating heat exchange system comprises a first-level refrigerating unit located outdoors, a second-level refrigerating unit located outdoors and an indoor unit located indoors. The outdoor first-level refrigerating unit and the outdoor second-level refrigerating unit are connected with the indoor unit through conveying pipelines. The indoor unit comprises a draught fan, a first evaporator and a second evaporator. The first evaporator is connected with a first heat exchanger, and the second evaporator is connected with a second heat exchanger. The two-level refrigerating heat exchange system comprises the first-level refrigerating unit and the second-level refrigerating unit, cold sources for heat exchange are provided for the indoor unit through the two refrigerating units, so that large-temperature-difference refrigerating is achieved, and more energy is saved.
Description
Technical field
The present invention relates to a kind of heat-exchange system, particularly relate to a kind of for machine room cold/the closed heat-exchange system of the passage of heat.
Background technology
In machine room, equipment cabinet server integration density is more and more higher, and the caloric value of server is increasing, and under ensureing that high heat density server in server room is operated in optimum environment temperature, current high heat density machine room heat exchange mode also changes at development.
Wherein the heat-exchange system of cold/passage of heat closed shop is owing to significantly improve air-conditioner set return air temperature, improves unit efficiency; And comparatively room-level air-conditioning is compared, its air-supply transmission range is near, without the need to the high-static pressure fan selecting power consumption large, reduces energy consumption; And near thermal source refrigeration, solve hot localised points problem in machine room to a certain extent.Based on above advantage, the heat-exchange system of cold/passage of heat closed shop is just obtaining market accreditation.
The heat-exchange system of cold/passage of heat closed shop has employing direct-evaporation-type, also have and adopt freezing ability of swimming, but be all single-stage refrigeration, cause air blow and return to have a narrow range of temperature, not easily realize lower wind pushing temperature, the return air of the higher temperature of cold/passage of heat closed shop can not be made full use of.
Summary of the invention
The object of the invention is the defect overcoming prior art existence, provide one effectively to reduce interior machine power consumption, more energy-conservation secondary refrigeration heat-exchange system.
The technical solution adopted for the present invention to solve the technical problems is:
Secondary refrigeration heat-exchange system of the present invention comprises the first order refrigeration unit being positioned at outdoor, and first order refrigeration unit comprises the first cooling tower and First Heat Exchanger, and described first cooling tower is connected with First Heat Exchanger; Be positioned at outdoor second level refrigeration unit, second level refrigeration unit comprises the second cooling tower, handpiece Water Chilling Units and the second heat exchanger, described second cooling tower provides cooling water to described handpiece Water Chilling Units, handpiece Water Chilling Units utilizes cooling water to export chilled water by self kind of refrigeration cycle, and handpiece Water Chilling Units circulation provides chilled water to described second heat exchanger; Be positioned at indoor indoor unit, outdoor first order refrigeration unit is communicated with indoor unit respectively by transfer tube with second level refrigeration unit, indoor unit comprises blower fan, the first evaporimeter and the second evaporimeter, described first evaporimeter is connected with described First Heat Exchanger, and described second evaporimeter is connected with described second heat exchanger.
The gas outlet of the first evaporimeter of the present invention is communicated with the air inlet of described First Heat Exchanger, the inlet of described first evaporimeter is communicated with the liquid outlet of described First Heat Exchanger, the gas outlet of described second evaporimeter is communicated with the air inlet of described second heat exchanger, and the inlet of described second evaporimeter is communicated with the liquid outlet of described second heat exchanger.
The coolant outlet of the first cooling tower of the present invention is communicated with the cooling water inlet of described First Heat Exchanger, the coolant outlet of described First Heat Exchanger is communicated with the cooling water inlet of described first cooling tower, is provided with the first cooling water pump between the coolant outlet of described first cooling tower and the cooling water inlet of First Heat Exchanger.
The coolant outlet of the second cooling tower of the present invention is communicated with the cooling water inlet of described handpiece Water Chilling Units, the coolant outlet of described handpiece Water Chilling Units is communicated with the cooling water inlet of described second cooling tower, is provided with the second cooling water pump between the coolant outlet of described second cooling tower and the cooling water inlet of handpiece Water Chilling Units.
The chilled water outlet of handpiece Water Chilling Units of the present invention and the chilled water inlet communication of described second heat exchanger, the chilled water outlet of described second heat exchanger and the chilled water inlet communication of described handpiece Water Chilling Units, be provided with chilled water pump between the chilled water outlet of described handpiece Water Chilling Units and the chilled water import of the second heat exchanger.
First Heat Exchanger of the present invention and the second heat exchanger are plate type heat exchanger, and described first evaporimeter and the second evaporimeter are copper pipe aluminum fin formula heat exchanger or micro-channel heat exchanger.
The setting height(from bottom) of first order refrigeration unit of the present invention and second level refrigeration unit is all higher than the setting height(from bottom) of indoor unit.
Indoor unit of the present invention also comprises device for drying and filtering, liquid-sighting glass and fluid reservoir.
The beneficial effect of secondary refrigeration heat-exchange system of the present invention: secondary refrigeration heat-exchange system of the present invention comprises first order refrigeration unit and second level refrigeration unit, by two refrigeration units for indoor unit provides the low-temperature receiver of exchanged heat, realize large temperature-difference refrigerating, more energy-conservation.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
Fig. 1 is secondary of the present invention refrigeration heat-exchange system structural representation.
Wherein: first order refrigeration unit 1, first cooling tower 11, First Heat Exchanger 13, the first cooling water pump 12; Second level refrigeration unit 2, second cooling tower 21, second heat exchanger 22, handpiece Water Chilling Units 23, the second cooling water pump 24, chilled water pump 25; Indoor unit 3, blower fan 31, the first evaporimeter 32, second evaporimeter 33.
Detailed description of the invention
Embodiment one:
As described in Figure 1, the secondary refrigeration heat-exchange system of the present embodiment comprises the second level refrigeration unit 2 and the indoor unit 3 that are positioned at outdoor first order refrigeration unit 1, are positioned at outdoor, outdoor first order refrigeration unit 1 is communicated with indoor unit 3 respectively by transfer tube with second level refrigeration unit 2, and first order refrigeration unit 1, second level refrigeration unit 2 and indoor unit 3 are communicated with formation loop by transfer tube.First order refrigeration unit 1 comprises the first cooling tower 11 and First Heat Exchanger 13, first cooling tower 11 is connected with First Heat Exchanger 13, particularly, the coolant outlet of the first cooling tower 11 is communicated with the cooling water inlet of First Heat Exchanger 13, the coolant outlet of First Heat Exchanger 13 is communicated with the cooling water inlet of the first cooling tower 11, the first cooling water pump 12 is provided with between the coolant outlet of the first cooling tower 11 and the cooling water inlet of First Heat Exchanger 13, first cooling water pump 12 provides power, cooling water enters the first cooling tower 11 and carries out radiating and cooling, absorb heat after entering First Heat Exchanger 13 and refrigerant circulation heat exchange after cooling water temperature and heat up, cooling water after intensification enters the first cooling tower 11 again and lowers the temperature, thus realize cooling water circulation.
Second level refrigeration unit 2 comprises the second cooling tower 21, handpiece Water Chilling Units 23 and the second heat exchanger 22, second cooling tower 21 provides cooling water to handpiece Water Chilling Units 23, particularly, the coolant outlet of the second cooling tower 21 is communicated with the cooling water inlet of handpiece Water Chilling Units 23, the coolant outlet of handpiece Water Chilling Units 23 is communicated with the cooling water inlet of the second cooling tower 21, the second cooling water pump 24 is provided with between the coolant outlet of the second cooling tower 21 and the cooling water inlet of handpiece Water Chilling Units 23, second cooling tower 21 provides cooling water to handpiece Water Chilling Units 23 by the second cooling water pump 24 circulation, handpiece Water Chilling Units 23 utilizes cooling water, by self kind of refrigeration cycle, chilled water is provided, the temperature of chilled water is lower than cooling water, handpiece Water Chilling Units 23 circulation provides chilled water to the second heat exchanger 22, particularly, the chilled water outlet of handpiece Water Chilling Units 23 and the chilled water inlet communication of the second heat exchanger 22, the chilled water outlet of the second heat exchanger 22 and the chilled water inlet communication of handpiece Water Chilling Units 23, chilled water pump 25 is provided with between the chilled water outlet of handpiece Water Chilling Units 23 and the chilled water import of the second heat exchanger 22, chilled water pump 25 provides power, chilled water absorbs heat after entering the second heat exchanger 22 and refrigerant circulation heat exchange by handpiece Water Chilling Units 23 and heats up, chilled water after intensification enters handpiece Water Chilling Units 23 radiating and cooling again, thus realize chilled water circulation.
Indoor unit 3 comprises blower fan 31, first evaporimeter 32 and the second evaporimeter 33, first evaporimeter 32 is connected with described First Heat Exchanger 13, described second evaporimeter 33 is connected with described second heat exchanger 22, particularly, the gas outlet of the first evaporimeter 32 is communicated with the air inlet of First Heat Exchanger 13, the inlet of the first evaporimeter 32 is communicated with the liquid outlet of First Heat Exchanger 13, when the liquid refrigerant of low temperature is by the first evaporimeter 32, liquid refrigerant in first evaporimeter 32 carries out heat exchange with extraneous air, vaporization heat absorption, reach the effect of refrigeration, high temperature liquid refrigerant after vaporization in the first evaporimeter 32 enters First Heat Exchanger 13 by the air inlet of First Heat Exchanger 13, in First Heat Exchanger 13, the cooling water of process and high temperature liquid refrigerant heat exchange make high temperature liquid refrigerant liquefy as the liquid refrigerant of low temperature, liquid refrigerant enters the first evaporimeter 32 via the first evaporimeter 32 inlet, liquid refrigerant vaporization absorption refrigeration in first evaporimeter 32, then according to said procedure successively circularly cooling, thus in First Heat Exchanger 13, realize the heat exchange of cooling water circulation and refrigerant circulation.
The gas outlet of the second evaporimeter 33 is communicated with the air inlet of the second heat exchanger 22, the inlet of the second evaporimeter 33 is communicated with the liquid outlet of the second heat exchanger 22, the cryogenic freezing water flowed through in the high temperature liquid refrigerant flowed out in second evaporimeter 33 and the second evaporimeter 33 carries out heat exchange, high temperature liquid refrigerant is liquefied to vaporize absorption refrigeration for then low temperature liquid cold-producing medium enters the second evaporimeter 33, thus in the second heat exchanger 22, realize the heat exchange of chilled water circulation and refrigerant circulation.
As shown in Figure 1, blower fan 31, first evaporimeter 32 and the second evaporimeter 33 are installed in the casing of indoor unit 3, blower fan 31, first evaporimeter 32 and the second evaporimeter 33 are installed in the same horizontal line, under the dynamic action of blower fan 31, in machine room, hot-air is first through the first evaporimeter 32, with the low-temperature refrigerant heat exchange in the first evaporimeter 32, become the cold air that temperature is lower, low-temperature refrigerant heat exchange again in the second evaporimeter 33 and the second evaporimeter 33, become the cold air that temperature is lower, cold air enters machine room, thus the cooling down realized machine room.Indoor unit is also equipped with device for drying and filtering, liquid-sighting glass and fluid reservoir etc., and fluid reservoir is for balancing refrigerant amount under different return air temperature.
First Heat Exchanger 13 in the present embodiment and the second heat exchanger 22 are plate type heat exchanger or copper pipe aluminum fin formula heat exchanger, first evaporimeter 32 and the second evaporimeter 33 are copper pipe aluminum fin or micro-channel heat exchanger, in addition First Heat Exchanger 13 and the second heat exchanger 22 can also be designed to double pipe heat exchanger or shell and tube exchanger, as long as recirculated cooling water (or circulated refrigerated water) and circulating refrigerant heat exchange function can be realized, concrete structure can do various deformation, does not limit this.First order refrigeration unit 1 in the present embodiment and the setting height(from bottom) of second level refrigeration unit 2 are all higher than the setting height(from bottom) of indoor unit 3, and such liquid refrigerant could enter machine room along transfer tube under gravity.
The running of above-mentioned secondary refrigeration heat-exchange system is: the low temperature liquid cold-producing medium that First Heat Exchanger 13 and the second heat exchanger 22 export under gravity, enter indoor unit 3 along transfer tube and be vaporizated into gaseous refrigerant in the first evaporimeter 32 and the second evaporimeter 33 with after extraneous hot air heat exchange, under the effect of density contrast, gaseous refrigerant rises, First Heat Exchanger 13 and the second heat exchanger 22 is entered through transfer tube, gaseous refrigerant in First Heat Exchanger 13 and recirculated cooling water liquefy as low temperature liquid cold-producing medium after carrying out heat exchange, liquefy as low temperature liquid cold-producing medium after gaseous refrigerant in second heat exchanger 22 and circulating frozen hydrothermal exchange, again enter indoor unit 3 under gravity, complete secondary cooling heat exchange closed circulation.
The secondary refrigeration heat-exchange system of the present embodiment makes hot-air higher in machine room and the first evaporimeter 32, second evaporimeter 33 two-stage heat exchange, can produce the air that temperature is lower.
Should be appreciated that specific embodiment described above only for explaining the present invention, being not intended to limit the present invention.Still be among protection scope of the present invention by spirit institute's apparent change of extending out of the present invention or change.
Claims (8)
1. a secondary refrigeration heat-exchange system, is characterized in that: comprising:
Be positioned at outdoor first order refrigeration unit (1), first order refrigeration unit (1) comprises the first cooling tower (11) and First Heat Exchanger (13), and described first cooling tower (11) is connected with First Heat Exchanger (13);
Be positioned at outdoor second level refrigeration unit (2), second level refrigeration unit (2) comprises the second cooling tower (21), handpiece Water Chilling Units (23) and the second heat exchanger (22), described second cooling tower (21) provides cooling water to described handpiece Water Chilling Units (23), handpiece Water Chilling Units (23) utilizes cooling water to export chilled water by self kind of refrigeration cycle, and handpiece Water Chilling Units (23) circulation provides chilled water to described second heat exchanger (22);
Be positioned at indoor indoor unit (3), outdoor first order refrigeration unit (1) is communicated with indoor unit (3) respectively by transfer tube with second level refrigeration unit (2), indoor unit (3) comprises blower fan (31), the first evaporimeter (32) and the second evaporimeter (33), described first evaporimeter (32) is connected with described First Heat Exchanger (13), and described second evaporimeter (33) is connected with described second heat exchanger (22).
2. secondary refrigeration heat-exchange system according to claim 1, it is characterized in that: the gas outlet of described first evaporimeter (32) is communicated with the air inlet of described First Heat Exchanger (13), the inlet of described first evaporimeter (32) is communicated with the liquid outlet of described First Heat Exchanger (13), the gas outlet of described second evaporimeter (33) is communicated with the air inlet of described second heat exchanger (22), and the inlet of described second evaporimeter (33) is communicated with the liquid outlet of described second heat exchanger (22).
3. secondary refrigeration heat-exchange system according to claim 1, it is characterized in that: the coolant outlet of described first cooling tower (11) is communicated with the cooling water inlet of described First Heat Exchanger (13), the coolant outlet of described First Heat Exchanger (13) is communicated with the cooling water inlet of described first cooling tower (11), is provided with the first cooling water pump (12) between the coolant outlet of described first cooling tower (11) and the cooling water inlet of First Heat Exchanger (13).
4. secondary refrigeration heat-exchange system according to claim 1, it is characterized in that: the coolant outlet of described second cooling tower (21) is communicated with the cooling water inlet of described handpiece Water Chilling Units (23), the coolant outlet of described handpiece Water Chilling Units (23) is communicated with the cooling water inlet of described second cooling tower (21), is provided with the second cooling water pump (24) between the coolant outlet of described second cooling tower (21) and the cooling water inlet of handpiece Water Chilling Units (23).
5. secondary refrigeration heat-exchange system according to claim 1, it is characterized in that: the chilled water outlet of described handpiece Water Chilling Units (23) and the chilled water inlet communication of described second heat exchanger (22), the chilled water outlet of described second heat exchanger (22) and the chilled water inlet communication of described handpiece Water Chilling Units (23), be provided with chilled water pump (25) between the chilled water outlet of described handpiece Water Chilling Units (23) and the chilled water import of the second heat exchanger (22).
6. secondary refrigeration heat-exchange system according to claim 1, it is characterized in that: described First Heat Exchanger (13) and the second heat exchanger (22) are plate type heat exchanger, described first evaporimeter (32) and the second evaporimeter (33) are copper pipe aluminum fin formula heat exchanger or micro-channel heat exchanger.
7. secondary refrigeration heat-exchange system according to claim 1, is characterized in that: the setting height(from bottom) of described first order refrigeration unit (1) and second level refrigeration unit (2) is all higher than the setting height(from bottom) of indoor unit (3).
8. secondary refrigeration heat-exchange system according to claim 1, is characterized in that: described indoor unit (3) also comprises device for drying and filtering, liquid-sighting glass and fluid reservoir.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510487351.4A CN105276728A (en) | 2015-08-10 | 2015-08-10 | Two-level refrigerating heat exchange system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510487351.4A CN105276728A (en) | 2015-08-10 | 2015-08-10 | Two-level refrigerating heat exchange system |
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| Publication Number | Publication Date |
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| CN105276728A true CN105276728A (en) | 2016-01-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510487351.4A Pending CN105276728A (en) | 2015-08-10 | 2015-08-10 | Two-level refrigerating heat exchange system |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007315717A (en) * | 2006-05-29 | 2007-12-06 | Hasegawa Electric Industry Co | Operation control method for cold/hot water pump in air conditioning facility |
| CN201852229U (en) * | 2010-08-23 | 2011-06-01 | 北京纳源丰科技发展有限公司 | Distributed type water-cooling separation type heat removal system for heat pipe |
| CN204902077U (en) * | 2015-08-10 | 2015-12-23 | 南京春荣节能科技有限公司 | Second grade refrigeration heat transfer system |
-
2015
- 2015-08-10 CN CN201510487351.4A patent/CN105276728A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007315717A (en) * | 2006-05-29 | 2007-12-06 | Hasegawa Electric Industry Co | Operation control method for cold/hot water pump in air conditioning facility |
| CN201852229U (en) * | 2010-08-23 | 2011-06-01 | 北京纳源丰科技发展有限公司 | Distributed type water-cooling separation type heat removal system for heat pipe |
| CN204902077U (en) * | 2015-08-10 | 2015-12-23 | 南京春荣节能科技有限公司 | Second grade refrigeration heat transfer system |
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Application publication date: 20160127 |