CN110594898A - Machine room water-saving air conditioning system with closed cooling water and chilled water capable of running in series - Google Patents
Machine room water-saving air conditioning system with closed cooling water and chilled water capable of running in series Download PDFInfo
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- CN110594898A CN110594898A CN201910218955.7A CN201910218955A CN110594898A CN 110594898 A CN110594898 A CN 110594898A CN 201910218955 A CN201910218955 A CN 201910218955A CN 110594898 A CN110594898 A CN 110594898A
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- refrigerating unit
- inlet
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- water
- condenser
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 29
- 239000000498 cooling water Substances 0.000 title claims abstract description 27
- 238000004378 air conditioning Methods 0.000 title claims abstract description 23
- 238000001816 cooling Methods 0.000 claims abstract description 27
- 238000005057 refrigeration Methods 0.000 claims description 50
- 230000008020 evaporation Effects 0.000 claims description 25
- 238000001704 evaporation Methods 0.000 claims description 25
- 239000007788 liquid Substances 0.000 claims description 24
- 238000007710 freezing Methods 0.000 abstract description 8
- 230000008014 freezing Effects 0.000 abstract description 6
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 238000010438 heat treatment Methods 0.000 abstract description 4
- 238000009423 ventilation Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 7
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 6
- 230000008676 import Effects 0.000 description 3
- 239000002826 coolant Substances 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
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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
- 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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- 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
-
- 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
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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)
- Air Conditioning Control Device (AREA)
Abstract
The invention belongs to air treatment equipment in the field of heating and ventilation air conditioners, and particularly relates to a machine room water-saving air conditioning system with closed cooling water and chilled water capable of running in series. The invention has reasonable structure, can improve the operation safety of the system, avoid the problems of freezing and blockage of an open cooling water system, reduce water consumption, realize water saving, fully utilize natural cooling and reduce energy consumption.
Description
Technical Field
The invention belongs to air treatment equipment in the field of heating ventilation air conditioners, and particularly relates to a water-saving air conditioning system of a machine room, wherein closed cooling water and chilled water can be operated in series.
Background
In recent years, more and more data center machine rooms with different scales are built around the country, because the heating density of the machine rooms is very high, the heating value of the machine room in unit area is increased to 500 plus 2000W/square meter, and the power consumption of an air conditioning system for cooling the machine room accounts for 30% ~ 40% of the power consumption of a cabinet in the machine room, a ventilation air conditioning system which runs all the year round is generally required to be arranged in the data center machine room, and in a common traditional mechanical refrigeration air conditioning system, a cooling water system is indispensable.
CN201621426795.3 discloses an air-conditioning cooling device operating all the year round, which combines an air-cooled mechanical refrigeration unit with an evaporative refrigeration unit, and uses the air-cooled mechanical refrigeration unit to perform supplementary refrigeration, and the evaporative refrigeration unit cools air through a direct evaporative cooling device, and further uses low-temperature air to prepare a low-temperature cold-carrying medium required by an air-conditioning system through a surface heat exchanger. Wherein, the cold-carrying medium is in closed circulation, the system safety is high, and the air-conditioning safety is improved by combining with the air-cooled mechanical refrigerating unit.
Disclosure of Invention
The invention aims to provide a machine room water-saving air-conditioning system capable of running closed cooling water and chilled water in series, which has a reasonable structure, can improve the running safety of the system, avoid the problems of freezing and blockage of an open cooling water system, reduce water consumption, realize water saving, fully utilize natural cooling and reduce energy consumption.
The purpose of the invention is realized as follows: the utility model provides a computer lab water-saving air conditioning system that closed cooling water and refrigerated water can establish ties operation, including dry-type indirect evaporation refrigerating unit and mechanical refrigeration unit, wherein dry-type indirect evaporation refrigerating unit includes direct evaporation refrigerating plant, surface type heat exchanger, exhaust fan and quick-witted case, the import of first mechanical refrigeration unit evaporimeter is connected through first circulating pump to surface type heat exchanger outlet pipe, the import of first mechanical refrigeration unit condenser is connected through the user to the outlet pipe of its evaporimeter, the import of surface type heat exchanger is connected to the outlet pipe of its condenser.
The dry indirect evaporation water cooler is combined with the water-cooling mechanical refrigerating unit, and the water-cooling mechanical refrigerating unit is used for supplementing refrigeration, so that the annual operation safety of the system is improved. The air conditioner cooling medium of the surface type heat exchanger coil is cooled by utilizing outdoor air, is used for air conditioner users, can close a spray water system and a mechanical refrigerating unit in most time periods all year round, and utilizes outdoor low-temperature air to carry out dry natural cooling, thereby realizing water-saving and energy-saving operation; in a part of time periods, when the temperature of outdoor air is higher, the air is cooled in the surface type heat exchanger coil pipe after being cooled by direct evaporative refrigeration by starting the direct evaporative refrigeration device; when the water outlet temperature of the refrigerating medium in the surface type heat exchanger coil is higher, the part of the cold-carrying medium is cooled by the mechanical refrigerating unit, the cooled part of the cold-carrying medium is used for refrigerating an air conditioning user after the temperature is reduced, the liquid outlet of the user is used as cooling water of the mechanical refrigerating unit, the mechanical refrigerating unit is used for auxiliary cooling, natural cooling is fully utilized, and energy consumption is reduced.
The advantages are that:
1. the cooling water system of the mechanical refrigerating unit operates in a closed mode, so that the operation safety of the system is improved, and the problems of freezing and blockage of an open cooling water system are solved;
2. the outdoor air is utilized to carry out natural cooling in part of time periods of the whole year, so that the water consumption is reduced, and the water is saved;
3. in a part of time period of the whole year, closed cooling water enters the mechanical refrigerating unit for further cooling, is used for refrigerating air-conditioning users and then is used as cooling water of a condenser of the mechanical refrigerating unit, so that the configuration of the mechanical refrigerating unit is reduced;
4. in order to better play a role in freezing prevention, the cold-carrying medium in the closed cooling water system can be an anti-freezing solution, such as ethylene glycol.
The invention has reasonable structure, improves the operation safety of the system, avoids the problems of freezing and blockage of an open cooling water system, reduces water consumption, realizes water saving, fully utilizes natural cooling and reduces energy consumption.
Drawings
The present invention will be further described with reference to the accompanying drawings, where fig. 1 is a schematic structural diagram of embodiment 1 of the present invention, fig. 2 is a schematic structural diagram of embodiment 2 of the present invention, fig. 3 is a schematic structural diagram of embodiment 3 of the present invention, fig. 4 is a schematic structural diagram of embodiment 4 of the present invention, fig. 5 is a schematic structural diagram of embodiment 5 of the present invention, fig. 6 is a schematic structural diagram of embodiment 6 of the present invention, and fig. 7 is a schematic structural diagram of embodiment 7 of the present invention.
Detailed Description
A water-saving air conditioning system of machine room with closed cooling water and chilled water capable of running in series is disclosed, as shown in figure 1, comprising a dry indirect evaporation refrigerating unit and a mechanical refrigerating unit, wherein the dry indirect evaporation refrigerating unit comprises a direct evaporation refrigerating device 3, a surface heat exchanger 4, an exhaust fan 5 and a cabinet, an outlet pipe of the surface heat exchanger 4 is connected with an inlet of an evaporator of a first mechanical refrigerating unit 7 through a first circulating pump 6, an outlet pipe of the evaporator is connected with an inlet of a condenser of the first mechanical refrigerating unit 7 through a user 8, and an outlet pipe of the condenser is connected with an inlet of the surface heat exchanger 4. A direct evaporation refrigerating device 3, a surface type heat exchanger 4 and an exhaust fan 5 are sequentially arranged in a machine box with an air inlet 1 and an air outlet 2 along the air inlet direction. The dry type indirect evaporation refrigerating unit comprises a direct evaporation refrigerating device 3, a surface type heat exchanger 4, an exhaust fan 5, an air inlet 1 and an air outlet 2, and low-temperature liquid output of the surface type heat exchanger 4 is supplied to an air conditioner user. The following operation modes are provided: the first operation mode is as follows: when the temperature of the outdoor air dry bulb is lower, a circulating water pump of the direct evaporation refrigerating device 3 is turned off, outdoor low-temperature air enters the surface type heat exchanger 4 through the air inlet 1, a cold carrying medium in the surface type heat exchanger 4 is cooled, the cold carrying medium with the reduced temperature enters an evaporator of the first mechanical refrigerating unit 7 under the action of the first circulating pump 6, the liquid outlet of the evaporator enters a user for refrigeration, the liquid outlet of the user enters a condenser, the liquid outlet of the condenser returns to the surface type heat exchanger 4 for cooling circulation and cooling, and at the moment, the first mechanical refrigerating unit 7 is turned off; and a second operation mode: when the dry bulb temperature of outdoor air is higher and the wet bulb temperature is lower, the direct evaporation refrigerating device 3 is started, the outdoor air is cooled by the direct evaporation refrigerating device 3, the outdoor air enters the surface type heat exchanger 4 to cool the cold carrying medium after the temperature is reduced, the dry type indirect evaporation refrigerating unit starts a wet type operation mode, and at the moment, the first mechanical refrigerating unit 7 is closed; and a third operation mode: when the outdoor air temperature is higher, the direct evaporation refrigerating device 3 is started, and when the temperature of the cold-carrying medium prepared by the surface type heat exchanger 4 is not enough to meet the refrigeration requirement of a user, the first mechanical refrigerating unit 7 is started, and the cold-carrying medium is further cooled by the first mechanical refrigerating unit to carry out mixed refrigeration.
As shown in fig. 2, a first bypass 20 and a first valve 12 are provided on a pipeline connecting the first circulation pump 6 to the inlet of the evaporator of the first mechanical refrigerator group 7, a second bypass 21 and a second valve 13 are provided on a pipeline connecting the user 8 to the inlet of the condenser of the first mechanical refrigerator group 7, wherein the second bypass 21 is connected to the inlet of the evaporator of the first mechanical refrigerator group 7 through the second circulation pump 11 and the fourth valve 15, and the first bypass 20 is connected to a pipeline connecting the inlet of the condenser of the first mechanical refrigerator group 7 before the second valve 13 through the third valve 14. By arranging the bypass and the valve, the running mode of the unit is more perfect. The first operation mode is as follows: when the temperature of the outdoor air dry bulb is lower, the circulating water pump of the direct evaporation refrigerating device 3 is closed, outdoor low-temperature air enters the surface type heat exchanger 4 through the air inlet 1, a cold carrying medium in the surface type heat exchanger 4 is cooled, the cold carrying medium with the reduced temperature enters an evaporator of the first mechanical refrigerating unit 7 through the first valve 12 under the action of the first circulating pump 6, the liquid discharged from the evaporator enters a user for refrigeration, at the moment, the first mechanical refrigerating unit 7 is closed, the first valve 12 and the second valve 13 are opened, the third valve 14 and the fourth valve 15 are closed, and the air conditioning refrigeration can be met only through the dry type indirect evaporation refrigerating unit in dry operation; and a second operation mode: when the dry bulb temperature of outdoor air is higher and the wet bulb temperature is lower, the direct evaporation refrigerating device 3 is started, the outdoor air is cooled by the direct evaporation refrigerating device 3, enters the surface type heat exchanger 4 to cool the cold carrying medium after the temperature is reduced, the dry type indirect evaporation refrigerating unit starts a wet type operation mode, at the moment, the first mechanical refrigerating unit 7 is closed, the first valve 12 and the second valve 13 are opened, and the third valve 14 and the fourth valve 15 are closed; and a third operation mode: when the outdoor air is high in dry and wet bulb temperature, the direct evaporation refrigerating device 3 is started, when the temperature of a cold-carrying medium prepared by the surface type heat exchanger 4 is insufficient for refrigeration of a user, the first mechanical refrigerating unit 7 is started to carry out mixed refrigeration, the liquid outlet of the surface type heat exchanger 4 enters an evaporator of the first mechanical refrigerating unit 7 for further cooling, the liquid outlet of the evaporator enters the user for refrigeration, the temperature of the liquid outlet of the user rises and enters a condenser to be used as cooling water of the first mechanical refrigerating unit 7, the liquid outlet of the condenser returns to the surface type heat exchanger 4 to be recycled by air cooling, at the moment, the first mechanical refrigerating unit 7 is started, the first valve 12 and the second valve 13 of the valves are started, and the third valve 14 and the fourth valve 15 are closed; and the operation mode is four: when the temperature of the outlet liquid of the surface heat exchanger 4 is higher than the temperature of the return liquid of the user, the outlet liquid of the surface heat exchanger 4 is only used as the cooling water of the condenser of the first mechanical refrigerating unit 7, the low-temperature outlet liquid prepared by the first mechanical refrigerating unit 7 is used for refrigerating the user through the second circulating pump 11, the third valve 14 and the fourth valve 15 of the valve are opened, and the first valve 12 and the second valve 13 of the valve are closed. The cooling medium circulating between the surface heat exchanger 4 and the evaporator, condenser and user can be water or an anti-freezing liquid (such as ethylene glycol).
As shown in fig. 3, the fifth valve 16, which is disposed on the pipeline of the first circulating pump 6 connected to the first valve 12 through the third bypass 22, is connected to the pipeline of the first mechanical refrigerator group 7 connected to the user 8 at the outlet of the evaporator, the user 8 is connected to the pipeline of the first mechanical refrigerator group 7 at the rear of the second valve 13 at the outlet of the condenser, and the sixth valve 17, which is disposed through the fourth bypass 23, is connected to the pipeline of the first mechanical refrigerator group 7 at the inlet of the condenser connected to the surface heat exchanger 4. Through the addition of the fifth valve 16 and the sixth valve 17, when the operation is performed in winter or the operation is performed in transition season, the mechanical refrigerating unit does not need to be started, and when the outlet liquid temperature of the surface type heat exchanger 4 can meet the user requirement, the first valve 12, the second valve 13, the third valve 14 and the fourth valve 15 are closed at the moment, the fifth valve 16 and the sixth valve 17 are opened, the outlet liquid of the surface type heat exchanger 4 passes through the first circulating pump 6 and passes through the fifth valve 16 to enter the user for refrigeration, the outlet liquid of the user returns to the surface type heat exchanger 4 through the sixth valve 17 for circulating cooling, and at the moment, the circulating flow of the cold-carrying medium does not pass through the first mechanical refrigerating unit 7, so that the operation energy consumption of the first circulating pump 6 is reduced.
As shown in fig. 4, the outlet pipe of the first circulation pump 6 is connected to the inlet of the evaporator of the first mechanical refrigerator group 7, the outlet pipe of the evaporator thereof is connected to the inlet of the evaporator of the second mechanical refrigerator group 18, the outlet pipe of the evaporator thereof is connected to the inlet of the condenser of the first mechanical refrigerator group 7 through the user 8, the outlet pipe of the condenser thereof is connected to the inlet of the condenser of the second mechanical refrigerator group 18, and the outlet pipe of the condenser thereof is connected to the inlet of the surface heat exchanger 4. The outlet liquid of the surface heat exchanger 4 is connected with a cold-carrying medium inlet of an evaporator of the first mechanical refrigerating unit 7 through a first circulating pump 6, a cold-carrying medium outlet of the evaporator of the first mechanical refrigerating unit 7 is connected with a cold-carrying medium inlet of an evaporator of the second mechanical refrigerating unit 18, a cold-carrying medium outlet of an evaporator of the second mechanical refrigerating unit 18 is connected with an inlet of a user 8, a cold-carrying medium outlet of the user 8 is connected with a cold-carrying medium inlet of a condenser of the first mechanical refrigerating unit 7, a cold-carrying medium outlet of a condenser of the first mechanical refrigerating unit 7 is connected with a cold-carrying medium inlet of a condenser of the second mechanical refrigerating unit 18, and the two mechanical refrigerating units are connected in series through a cooling water side and a freezing water side, so that the temperature difference of the single mechanical refrigerating unit is reduced, and the energy efficiency of the mechanical refrigerating unit is improved.
When the temperature of the air enters the outdoor refrigeration unit 18 through the second valve 13, the temperature of the air is directly reduced through the first valve 13, the temperature of the air is directly reduced through the second valve 13, the temperature of the air enters the outdoor refrigeration unit 13 through the second valve 13, the temperature of the air is directly reduced through the second valve 13, the temperature of the air enters the outdoor refrigeration unit 4 through the second valve 13, the air enters the outdoor refrigeration unit 18 through the second valve 13, the outdoor refrigeration unit 7 is directly reduced through the second valve 13, the dry-type refrigeration unit 13, the dry type refrigeration unit 13 is directly reduced through the dry type refrigeration unit 13, the dry type refrigeration unit 4 is directly cooled through the dry type refrigeration unit 4, the dry type refrigeration unit 18 is directly cooled through the dry type refrigeration unit 4, the dry type refrigeration unit 18, the dry type refrigeration system is operated through the dry type refrigeration system, the dry type refrigeration system 4, the dry type refrigeration system 14, the dry type refrigeration system is operated, the dry type refrigeration system 4 is operated, the dry type refrigeration system 4, the dry type refrigeration system, the dry type refrigeration system is operated, the dry type refrigeration system is operated, the dry type refrigeration system is operated, the dry type refrigeration system is operated, the dry type refrigeration system is operated, the dry type refrigeration system is operated, the dry type refrigeration system is operated, the.
As shown in fig. 6 and 7, the outlet pipe of the surface heat exchanger 4 is connected to the outlet of the evaporator of the first mechanical refrigerator group 7 through the liquid-liquid heat exchanger 9 and the first circulation pump 6; or/and an indirect evaporative cooling section 10 is arranged between the air inlet 1 and the direct evaporative cooling device 3 in the machine box. A liquid-liquid heat exchanger 9 is arranged on the liquid outlet side of the surface type heat exchanger 4, and when the surface type heat exchanger operates in summer, the liquid-liquid heat exchanger 9 is used for further cooling the cold-carrying medium to reduce the temperature of the cold-carrying medium; the indirect evaporative cooling section 10 is arranged on the air inlet side of the direct evaporative cooling device 3, and the indirect evaporative cooling section 10 is utilized, so that the dry-wet bulb temperature of inlet air is reduced, the natural cooling running time is improved, the configuration of a mechanical refrigerating unit is reduced, and the energy conservation is better.
Claims (7)
1. The utility model provides a but closed cooling water and refrigerated water tandem operation's computer lab water-saving air conditioning system, includes dry-type indirect evaporation refrigerating unit and mechanical refrigeration unit, and wherein dry-type indirect evaporation refrigerating unit includes direct evaporation refrigerating plant (3), surface formula heat exchanger (4), exhaust fan (5) and quick-witted case, characterized by: the outlet pipe of the surface heat exchanger (4) is connected with the inlet of the evaporator of the first mechanical refrigerating unit (7) through a first circulating pump (6), the outlet pipe of the evaporator is connected with the inlet of the condenser of the first mechanical refrigerating unit (7) through a user (8), and the outlet pipe of the condenser is connected with the inlet of the surface heat exchanger (4).
2. The water-saving air conditioning system of the machine room with the closed cooling water and the chilled water capable of operating in series according to claim 1, which is characterized in that: a direct evaporation refrigerating device (3), a surface type heat exchanger (4) and an exhaust fan (5) are sequentially arranged in a case with an air inlet (1) and an air outlet (2) along the air inlet direction.
3. The water-saving air conditioning system of the machine room with the closed cooling water and the chilled water capable of operating in series according to claim 1, which is characterized in that: a first bypass (20) and a first valve (12) are arranged on a pipeline of a first circulating pump (6) connected with an inlet of an evaporator of a first mechanical refrigerating unit (7), a second bypass (21) and a second valve (13) are arranged on a pipeline of a user (8) connected with an inlet of a condenser of the first mechanical refrigerating unit (7), wherein the second bypass (21) is connected with an inlet of an evaporator of the first mechanical refrigerating unit (7) through a second circulating pump (11) and a fourth valve (15), and the first bypass (20) is connected with a pipeline of the inlet of the condenser of the first mechanical refrigerating unit (7) before the second valve (13) through a third valve (14).
4. The water-saving air conditioning system of the machine room with the closed cooling water and the chilled water capable of operating in series according to claim 3, which is characterized in that: a fifth valve (16) arranged on a pipeline of a first circulating pump (6) connected with a first valve (12) through a third bypass (22) is connected to a pipeline of a user (8) connected with an evaporator outlet of a first mechanical refrigerating unit (7), a condenser inlet of the user (8) connected with the first mechanical refrigerating unit (7) is arranged on a pipeline at the rear part of a second valve (13), and a sixth valve (17) arranged through a fourth bypass (23) is connected to a pipeline of the first mechanical refrigerating unit (7) connected with a condenser outlet of a surface type heat exchanger (4).
5. The water-saving air conditioning system of the machine room with the closed cooling water and the chilled water capable of operating in series according to claim 1, which is characterized in that: the outlet pipe of the first circulating pump (6) is connected with the inlet of the evaporator of the first mechanical refrigerating unit (7), the outlet pipe of the evaporator is connected with the inlet of the evaporator of the second mechanical refrigerating unit (18), the outlet pipe of the evaporator is connected with the inlet of the condenser of the first mechanical refrigerating unit (7) through a user (8), the outlet pipe of the condenser is connected with the inlet of the condenser of the second mechanical refrigerating unit (18), and the outlet pipe of the condenser is connected with the inlet of the surface heat exchanger (4).
6. The water-saving air conditioning system of the machine room with the closed cooling water and the chilled water capable of operating in series according to claim 5, which is characterized in that: a first bypass (20), a third bypass (22) and a first valve (12) are arranged on a pipeline of which an outlet pipe of the first circulating pump (6) is connected with an inlet of an evaporator of the first mechanical refrigerating unit (7), wherein the first bypass (20) is connected with an inlet of a condenser of the first mechanical refrigerating unit (7) through a third valve (14), and the third bypass (22) is connected with an outlet pipe of an evaporator of the second mechanical refrigerating unit (18) through a fifth valve (16); an outlet pipe of a user (8) is connected with an inlet of a condenser of the first mechanical refrigerating unit (7) through a second bypass (21) and a second valve (13), wherein the second bypass (21) is connected with an inlet of an evaporator of the first mechanical refrigerating unit (7) through a second circulating pump (11) and a fourth valve (15), an outlet of the user (8) is connected with a pipeline of the condenser of the first mechanical refrigerating unit (7) and an inlet of the condenser of the first mechanical refrigerating unit (7) is positioned behind the second valve (13), a sixth valve (17) arranged through the fourth bypass (23) is connected with a pipeline of the condenser of the first mechanical refrigerating unit (7) and an outlet of the condenser of the second mechanical refrigerating unit (18), and a seventh valve (19) arranged on the pipeline through a fifth bypass (24) is connected with the outlet pipe of the condenser of the second mechanical refrigerating unit (18).
7. The water-saving air conditioning system of the machine room with the closed cooling water and the chilled water capable of operating in series according to the claim 1, 2, 3, 4, 5 or 6, which is characterized in that: an outlet pipe of the surface type heat exchanger (4) is connected with an outlet of an evaporator of the first mechanical refrigerating unit (7) through a liquid-liquid heat exchanger (9) and a first circulating pump (6); or/and an indirect evaporative cooling section (10) is arranged between the air inlet (1) in the case and the direct evaporative cooling device (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910218955.7A CN110594898A (en) | 2019-03-21 | 2019-03-21 | Machine room water-saving air conditioning system with closed cooling water and chilled water capable of running in series |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910218955.7A CN110594898A (en) | 2019-03-21 | 2019-03-21 | Machine room water-saving air conditioning system with closed cooling water and chilled water capable of running in series |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110594898A true CN110594898A (en) | 2019-12-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910218955.7A Pending CN110594898A (en) | 2019-03-21 | 2019-03-21 | Machine room water-saving air conditioning system with closed cooling water and chilled water capable of running in series |
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| CN (1) | CN110594898A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115143656A (en) * | 2022-05-27 | 2022-10-04 | 杭氧集团股份有限公司 | Closed circulating water system with high-temperature season cold compensation |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115143656A (en) * | 2022-05-27 | 2022-10-04 | 杭氧集团股份有限公司 | Closed circulating water system with high-temperature season cold compensation |
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