CN112665044B - Air conditioning system and control method thereof - Google Patents
Air conditioning system and control method thereof Download PDFInfo
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- CN112665044B CN112665044B CN202011471212.XA CN202011471212A CN112665044B CN 112665044 B CN112665044 B CN 112665044B CN 202011471212 A CN202011471212 A CN 202011471212A CN 112665044 B CN112665044 B CN 112665044B
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 47
- 238000007791 dehumidification Methods 0.000 claims description 21
- 238000005057 refrigeration Methods 0.000 claims description 14
- 239000002826 coolant Substances 0.000 claims description 7
- 238000010248 power generation Methods 0.000 claims description 7
- 239000002699 waste material Substances 0.000 abstract description 6
- 239000003507 refrigerant Substances 0.000 abstract description 4
- 230000001105 regulatory effect Effects 0.000 abstract description 2
- 230000001276 controlling effect Effects 0.000 description 15
- 239000002184 metal Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000005494 condensation Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The invention provides an air conditioning system and a control method thereof, wherein the air conditioning system comprises a temperature regulation subsystem and a humidity regulation subsystem, the temperature regulation subsystem comprises a second heat exchanger, a high-temperature cold source and a first water pump, a first secondary refrigerant in the temperature regulation subsystem can conduct cold energy of the high-temperature cold source to the second heat exchanger under the driving action of the first water pump, the humidity regulation subsystem comprises a third heat exchanger, a low-temperature cold source and a second water pump, a second secondary refrigerant in the humidity regulation subsystem can conduct cold energy of the low-temperature cold source to the third heat exchanger under the driving action of the second water pump, and the temperature regulation subsystem and the humidity regulation subsystem are in heat exchange connection through the first heat exchanger. According to the invention, the temperature regulation subsystem and the humidity regulation subsystem can be used for independently regulating the temperature or humidity of the air in the preset space, so that the problem of energy waste caused by simultaneous humidity and temperature in the prior art is effectively solved.
Description
Technical Field
The invention belongs to the technical field of air conditioning, and particularly relates to an air conditioning system and a control method thereof.
Background
The existing central air conditioning system adopts a temperature and humidity independent control scheme, so that the temperature and the humidity can be respectively and independently adjusted according to indoor requirements, the indoor air quality is improved, the energy loss caused by reheating of a traditional primary air return full-air system can be avoided, and the energy is saved. However, the independent temperature and humidity control scheme needs two water systems with different temperatures, two water systems are needed to operate simultaneously, and the energy consumption of the water systems is high.
The inventor finds that most of the existing air conditioning systems adopt a condensation dehumidification mode to process air, cooling and dehumidification are carried out simultaneously, actually, the temperature of a cold source required for cooling is obviously higher than the temperature required for dehumidification, and the requirement for simultaneously changing the temperature and the humidity of indoor air of a building is hardly met by the processing mode. The adoption of condensation dehumidification often causes the temperature after dehumidification to be too low, and a hot section is required to be added for air treatment, thus causing energy waste.
Disclosure of Invention
Therefore, the present invention provides an air conditioning system and a control method thereof to overcome the defect of energy waste caused by simultaneous operation of temperature and humidity in the prior art.
In order to solve the above problems, the present invention provides an air conditioning system, which includes a temperature adjustment subsystem and a humidity adjustment subsystem, wherein the temperature adjustment subsystem includes a second heat exchanger, a high temperature cold source, and a first water pump, a first coolant in the temperature adjustment subsystem can conduct cold energy of the high temperature cold source to the second heat exchanger under the driving action of the first water pump, the humidity adjustment subsystem includes a third heat exchanger, a low temperature cold source, and a second water pump, a second coolant in the humidity adjustment subsystem can conduct cold energy of the low temperature cold source to the third heat exchanger under the driving action of the second water pump, and the temperature adjustment subsystem and the humidity adjustment subsystem form a heat exchange connection through the first heat exchanger.
Preferably, the high-temperature cold source is a photovoltaic centrifuge set.
Preferably, an inlet pipeline and an outlet pipeline of the first secondary refrigerant of the high-temperature cold source are respectively provided with a first electromagnetic valve and a second electromagnetic valve in a one-to-one correspondence manner; and/or third electromagnetic valves and fourth electromagnetic valves are respectively arranged on the inlet pipeline and the outlet pipeline of the second secondary refrigerant of the low-temperature cold source in a one-to-one correspondence manner.
Preferably, the temperature regulation subsystem further comprises a fifth electromagnetic valve, the fifth electromagnetic valve is connected in parallel with the high-temperature cold source, and the first electromagnetic valve, the second electromagnetic valve and the high-temperature cold source are located on the same branch.
Preferably, the third heat exchanger is located in the fresh air handling unit.
The invention also provides a control method of the air conditioning system, which is used for controlling the air conditioning system and comprises the following steps:
acquiring an operation mode of an air conditioning system;
and controlling the first electromagnetic valve, the second electromagnetic valve, the third electromagnetic valve, the fourth electromagnetic valve, the fifth electromagnetic valve, the first water pump and the second water pump in the air-conditioning system to operate according to the acquired operation mode.
Preferably, the first and second electrodes are formed of a metal,
and when the acquired operation mode is the independent dehumidification mode, the first electromagnetic valve and the second electromagnetic valve are controlled to be cut off, the third electromagnetic valve, the fourth electromagnetic valve and the fifth electromagnetic valve are controlled to be communicated, the second water pump is controlled to operate, and the first water pump is controlled to stop operating.
Preferably, the first and second electrodes are formed of a metal,
and when the acquired operation mode is the independent refrigeration mode, controlling the first electromagnetic valve and the second electromagnetic valve to be communicated, controlling the third electromagnetic valve, the fourth electromagnetic valve and the fifth electromagnetic valve to be cut off, controlling the first water pump to operate, and controlling the second water pump to stop operating.
Preferably, the first and second electrodes are formed of a metal,
and when the acquired operation mode is a refrigeration and dehumidification mode, controlling the first electromagnetic valve and the second electromagnetic valve to be communicated, controlling the third electromagnetic valve, the fourth electromagnetic valve and the fifth electromagnetic valve to be cut off, and controlling the first water pump and the second water pump to operate.
Preferably, when the high-temperature cold source is a photovoltaic centrifuge set, the operation mode further includes a photovoltaic power generation and storage mode, and when the obtained operation mode is the photovoltaic power generation and storage mode, the photovoltaic centrifuge set is controlled to operate, generate power and store the power.
According to the air conditioning system and the control method thereof provided by the invention, the temperature regulation subsystem and the humidity regulation subsystem can be used for independently regulating the temperature or humidity of the air in the preset space, so that the problem of energy waste caused by simultaneous humidity and temperature in the prior art is effectively solved, and meanwhile, the temperature regulation subsystem and the humidity regulation subsystem form heat exchange through the first heat exchanger, so that the temperature regulation subsystem can utilize the cold energy in the humidity regulation subsystem, the temperature regulation can be realized when the cold energy requirement of the preset space is smaller, the high-temperature cold source does not need to be started, and the energy is saved.
Drawings
Fig. 1 is a schematic structural diagram of an air conditioning system according to an embodiment of the present invention.
The reference numerals are represented as:
1. a first heat exchanger; 21. a second heat exchanger; 22. a high-temperature cold source; 23. a first water pump; 24. a first solenoid valve; 25. a second solenoid valve; 26. a fifth solenoid valve; 31. a third heat exchanger; 32. a low-temperature cold source; 33. a second water pump; 34. a third electromagnetic valve; 35. and a fourth solenoid valve.
Detailed Description
Referring to fig. 1, according to an embodiment of the present invention, an air conditioning system is provided, which includes a temperature adjustment subsystem and a humidity adjustment subsystem, where the temperature adjustment subsystem includes a second heat exchanger 21, a high temperature cold source 22, and a first water pump 23, a first coolant in the temperature adjustment subsystem can conduct cold energy of the high temperature cold source 22 to the second heat exchanger 21 under a driving action of the first water pump 23, the humidity adjustment subsystem includes a third heat exchanger 31, a low temperature cold source 32, and a second water pump 33, a second coolant in the humidity adjustment subsystem can conduct cold energy of the low temperature cold source 32 to the third heat exchanger 31 under a driving action of the second water pump 33, and the temperature adjustment subsystem and the humidity adjustment subsystem form a heat exchange connection through the first heat exchanger 1. In the technical scheme, the temperature regulation subsystem and the humidity regulation subsystem can be mutually independent and carry out temperature regulation or humidity regulation on the air in the preset space, so that the problem of energy waste caused by simultaneous humidity and temperature in the prior art is effectively avoided, and meanwhile, the temperature regulation subsystem and the humidity regulation subsystem are enabled to form heat exchange through the first heat exchanger 1, so that the temperature regulation subsystem can utilize the cold quantity in the humidity regulation subsystem, the temperature regulation can be realized when the cold quantity demand in the preset space is smaller, the high-temperature cold source 22 is not required to be started, and the energy is saved.
In a most preferred embodiment, the high-temperature cold source 22 is a photovoltaic centrifugal unit, and at this time, different mode selections of the air conditioning system can be met by the sub-operating condition operation of the photovoltaic centrifugal unit, and specifically, for example, the photovoltaic centrifugal unit can be controlled to operate in a power generation and storage mode at a low load (when cold demand is small) in the daytime, so that conversion, storage and utilization of solar energy are realized, and the pressure of a power grid in the peak-time electricity utilization period in the daytime is relieved.
Further, an inlet pipeline and an outlet pipeline of the first coolant (e.g. water) of the high temperature cold source 22 are respectively provided with a first electromagnetic valve 24 and a second electromagnetic valve 25 in a one-to-one correspondence manner; and/or, the inlet pipeline and the outlet pipeline of the second coolant (e.g. water) of the low-temperature cold source 32 are respectively provided with the third electromagnetic valve 34 and the fourth electromagnetic valve 35 in a one-to-one correspondence manner, so that the operation mode of the air conditioning system is richer, and various air conditioning requirements of users can be met.
Further, the temperature adjustment subsystem further includes a fifth electromagnetic valve 26, the fifth electromagnetic valve 26 is connected in parallel with the high temperature cold source 22, and the first electromagnetic valve 24, the second electromagnetic valve 25 and the high temperature cold source 22 are located on the same branch, and through the arrangement of the fifth electromagnetic valve 26, the high temperature cold source 22 of the air conditioning system can be selectively short-circuited, so that the high temperature cold source 22 can be selectively operated or not operated under some working conditions.
It will be appreciated that the third heat exchanger 31 is located within the fresh air handling unit so as to be able to perform the necessary dehumidification of the fresh air.
According to an embodiment of the present invention, there is also provided a control method of an air conditioning system, for controlling the air conditioning system, including the steps of:
acquiring an operation mode of an air conditioning system, wherein the operation mode can comprise an independent dehumidification mode, an independent refrigeration mode or a refrigeration and dehumidification mode;
and controlling the operation of the first solenoid valve 24, the second solenoid valve 25, the third solenoid valve 34, the fourth solenoid valve 35, the fifth solenoid valve 26 and the first water pump 23 and the second water pump 33 in the air conditioning system according to the acquired operation mode.
And when the acquired operation mode is the independent dehumidification mode, the first electromagnetic valve 24 and the second electromagnetic valve 25 are controlled to be cut off, the third electromagnetic valve 34, the fourth electromagnetic valve 35 and the fifth electromagnetic valve 26 are controlled to be communicated, the second water pump 33 is controlled to operate, and the first water pump 23 is controlled to stop operating. Specifically, when the indoor load is low, the air conditioning system operates in an independent dehumidification mode (or the user selects to operate the independent dehumidification mode), correspondingly, the humidity adjustment subsystem operates while the temperature adjustment subsystem does not operate, the third heat exchanger 31 dehumidifies the airflow by using the cold energy of the low-temperature cold source 32, and at this time, the dehumidified airflow does not need to be heated again.
And when the acquired operation mode is the independent refrigeration mode, controlling the first electromagnetic valve 24 and the second electromagnetic valve 25 to be communicated, controlling the third electromagnetic valve 34, the fourth electromagnetic valve 35 and the fifth electromagnetic valve 26 to be cut off, controlling the first water pump 23 to operate, and controlling the second water pump 33 to stop operating. Specifically, when the indoor load is large and dehumidification is not required, the air conditioning system operates an independent refrigeration mode (or the user selects to operate the independent refrigeration mode), correspondingly, the temperature adjustment subsystem operates while the humidity adjustment subsystem does not operate, and the second heat exchanger 21 utilizes the cold energy of the high-temperature cold source 22 to cool the indoor space.
And when the acquired operation mode is the refrigeration and dehumidification mode, the first electromagnetic valve 24 and the second electromagnetic valve 25 are controlled to be communicated, the third electromagnetic valve 34, the fourth electromagnetic valve 35 and the fifth electromagnetic valve 26 are controlled to be cut off, and the first water pump 23 and the second water pump 33 are controlled to operate. Specifically, when the indoor load is great and need the dehumidification, this moment air conditioning system operation refrigeration dehumidification mode (also can be that the user chooses the operation refrigeration dehumidification mode by oneself), it is corresponding, the temperature regulation subsystem with the humidity control subsystem is simultaneously, second heat exchanger 21 utilizes the cold volume of high temperature cold source 22 to cool down the refrigeration to indoor, third heat exchanger 31 then utilizes the cold volume of low temperature cold source 32 to dehumidify the air current to realized the independent control respectively of refrigeration and dehumidification, need not like among the prior art, adopt more microthermal cold source earlier to heat up the energy waste that the heating brought after the air current dehumidifies.
When the high-temperature cold source 22 is a photovoltaic centrifuge set, the operation mode further includes a photovoltaic power generation and storage mode, and when the obtained operation mode is the photovoltaic power generation and storage mode, the photovoltaic centrifuge set is controlled to operate, generate power and store the power.
It is readily understood by a person skilled in the art that the advantageous ways described above can be freely combined, superimposed without conflict.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention. The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the technical principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention.
Claims (9)
1. An air conditioning system is characterized by comprising a temperature adjusting subsystem and a humidity adjusting subsystem, the temperature regulation subsystem comprises a second heat exchanger (21), a high-temperature cold source (22) and a first water pump (23), the first refrigerating medium in the temperature regulation subsystem can conduct the cold energy of the high-temperature cold source (22) to the second heat exchanger (21) under the driving action of the first water pump (23), the humidity adjusting subsystem comprises a third heat exchanger (31), a low-temperature cold source (32) and a second water pump (33), the second refrigerating medium in the humidity adjusting subsystem can conduct the cold energy of the low-temperature cold source (32) to the third heat exchanger (31) under the driving action of the second water pump (33), the temperature regulation subsystem and the humidity regulation subsystem are in heat exchange connection through a first heat exchanger (1); the inlet pipeline and the outlet pipeline of the first refrigerating medium of the high-temperature cold source (22) are respectively provided with a first electromagnetic valve (24) and a second electromagnetic valve (25) in a one-to-one correspondence manner; the temperature regulation subsystem further comprises a fifth electromagnetic valve (26), the fifth electromagnetic valve (26) is connected with the high-temperature cold source (22) in parallel, the first electromagnetic valve (24), the second electromagnetic valve (25) and the high-temperature cold source (22) are located on the same branch, and the temperature regulation subsystem and the humidity regulation subsystem form heat exchange through the first heat exchanger (1) so that the temperature regulation subsystem can utilize cold in the humidity regulation subsystem.
2. Air conditioning system according to claim 1, characterized in that the high temperature heat sink (22) is a photovoltaic centrifuge bank.
3. The air conditioning system as claimed in claim 1 or 2, wherein the inlet pipeline and the outlet pipeline of the second coolant of the low temperature cold source (32) are respectively provided with a third electromagnetic valve (34) and a fourth electromagnetic valve (35) in a one-to-one correspondence manner.
4. Air conditioning system according to claim 1, characterized in that the third heat exchanger (31) is located in a fresh air handling unit.
5. A control method of an air conditioning system, for controlling the air conditioning system of claim 3, comprising the steps of:
acquiring an operation mode of an air conditioning system;
and controlling the first electromagnetic valve (24), the second electromagnetic valve (25), the third electromagnetic valve (34), the fourth electromagnetic valve (35), the fifth electromagnetic valve (26) and the first water pump (23) and the second water pump (33) in the air conditioning system according to the acquired operation mode.
6. The control method according to claim 5,
and when the acquired operation mode is the independent dehumidification mode, the first electromagnetic valve (24) and the second electromagnetic valve (25) are controlled to be cut off, the third electromagnetic valve (34), the fourth electromagnetic valve (35) and the fifth electromagnetic valve (26) are controlled to be communicated, the second water pump (33) is controlled to operate, and the first water pump (23) is controlled to stop operating.
7. The control method according to claim 5,
and when the acquired operation mode is the independent refrigeration mode, controlling the first electromagnetic valve (24) and the second electromagnetic valve (25) to be communicated, controlling the third electromagnetic valve (34), the fourth electromagnetic valve (35) and the fifth electromagnetic valve (26) to be cut off, controlling the first water pump (23) to operate, and controlling the second water pump (33) to stop operating.
8. The control method according to claim 5,
and when the acquired operation mode is a refrigeration and dehumidification mode, the first electromagnetic valve (24) and the second electromagnetic valve (25) are controlled to be communicated, the third electromagnetic valve (34), the fourth electromagnetic valve (35) and the fifth electromagnetic valve (26) are controlled to be cut off, and the first water pump (23) and the second water pump (33) are controlled to operate.
9. The control method according to claim 5, characterized in that when the high-temperature heat source (22) is a photovoltaic centrifuge set, the operation mode further comprises a photovoltaic power generation and storage mode, and when the obtained operation mode is the photovoltaic power generation and storage mode, the photovoltaic centrifuge set is controlled to operate, generate power and store the power.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011471212.XA CN112665044B (en) | 2020-12-14 | 2020-12-14 | Air conditioning system and control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011471212.XA CN112665044B (en) | 2020-12-14 | 2020-12-14 | Air conditioning system and control method thereof |
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| CN112665044A CN112665044A (en) | 2021-04-16 |
| CN112665044B true CN112665044B (en) | 2022-03-15 |
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|---|---|---|---|---|
| JP2008185248A (en) * | 2007-01-29 | 2008-08-14 | Ootaki Gas Kk | Hot water supply system |
| CN103411278A (en) * | 2013-08-23 | 2013-11-27 | 机械工业第三设计研究院 | Fresh air handling unit suitable for air conditioning system allowing independent temperature and humidity control |
| CN203396012U (en) * | 2013-07-29 | 2014-01-15 | 北京中诚盛源技术发展有限公司 | Temperature and humidity independently-regulating air conditioning system using ice storage as double-cold source |
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| CN105627473A (en) * | 2016-02-23 | 2016-06-01 | 上海交通大学 | Solar thermally-driven independent temperature and humidity control air conditioning system |
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Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102235723A (en) * | 2010-04-20 | 2011-11-09 | 同方人工环境有限公司 | Double-cold source temperature and humidity independently controlled air-conditioning system |
| CN102226557B (en) * | 2011-04-29 | 2013-04-17 | 中冶赛迪工程技术股份有限公司 | Waste cold utilization based air-conditioning system capable of realizing independent temperature-humidity control |
| CN108489136A (en) * | 2018-05-21 | 2018-09-04 | 上海伯涵热能科技有限公司 | A kind of air regulator that humidity is separately adjustable |
-
2020
- 2020-12-14 CN CN202011471212.XA patent/CN112665044B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008185248A (en) * | 2007-01-29 | 2008-08-14 | Ootaki Gas Kk | Hot water supply system |
| CN203396012U (en) * | 2013-07-29 | 2014-01-15 | 北京中诚盛源技术发展有限公司 | Temperature and humidity independently-regulating air conditioning system using ice storage as double-cold source |
| CN103411278A (en) * | 2013-08-23 | 2013-11-27 | 机械工业第三设计研究院 | Fresh air handling unit suitable for air conditioning system allowing independent temperature and humidity control |
| CN204404419U (en) * | 2014-12-10 | 2015-06-17 | 奥意建筑工程设计有限公司 | Realize the combined air-conditioning system of independent temperature-humidity control |
| CN105627473A (en) * | 2016-02-23 | 2016-06-01 | 上海交通大学 | Solar thermally-driven independent temperature and humidity control air conditioning system |
| CN110953691A (en) * | 2019-12-23 | 2020-04-03 | 珠海格力电器股份有限公司 | Air temperature and humidity independent control system with low energy consumption and reliability and control method thereof |
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