CN107166588B - Temperature and humidity independent control air conditioning system capable of precooling by utilizing high-temperature cold water - Google Patents
Temperature and humidity independent control air conditioning system capable of precooling by utilizing high-temperature cold water Download PDFInfo
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- CN107166588B CN107166588B CN201710403513.0A CN201710403513A CN107166588B CN 107166588 B CN107166588 B CN 107166588B CN 201710403513 A CN201710403513 A CN 201710403513A CN 107166588 B CN107166588 B CN 107166588B
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- cooling
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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
- F24F5/0003—Exclusively-fluid systems
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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
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
- F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/02—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating liquids, e.g. brine
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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
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
- F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
- F24F2003/144—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by dehumidification only
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Other Air-Conditioning Systems (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention relates to a temperature and humidity independent control air conditioning system capable of precooling by high-temperature cold water, which comprises a high-temperature refrigeration station, a sensible heat tail end and an air dehumidification processing unit, wherein the sensible heat tail end and the air dehumidification processing unit are arranged indoors; the air dehumidification processing unit includes precooling surface cooler, evaporimeter, compressor, water-cooling surface cooler and choke valve, evaporimeter, compressor, water-cooling surface cooler and the choke valve connects gradually and constitutes refrigerant circulation circuit, precooling surface cooler with the evaporimeter is arranged in proper order and is waited to dehumidify on the air passage, high temperature cooling water set passes through the frozen water pump respectively with terminal, the precooling surface cooler of sensible heat, water-cooling surface cooler are connected, the return water pipeline of terminal, the precooling surface cooler of sensible heat and water-cooling surface cooler with high temperature cooling water set connects.
Description
Technical Field
The invention relates to a temperature and humidity independent control air conditioning system for precooling by high-temperature cold water, and belongs to the technical field of air conditioners.
Background
The regulation and control process of the indoor hot and wet environment of the building comprises two aspects of regulation and control of indoor temperature and humidity, a conventional air conditioning system generally utilizes a single cold source to simultaneously realize the regulation and control of the temperature and the humidity, energy utilization grade loss can be brought, and effective regulation and control of the hot and wet environment of the building can not be realized due to the fact that the conventional air conditioning system can not adapt to the gradual change of indoor sensible heat load and wet load. As a novel air conditioning system form, the temperature and humidity independent control air conditioning system respectively adjusts the indoor temperature and humidity by different means: the humidity is adjusted by supplying dry air to bear the humidity load in the room, and the temperature in the room is adjusted by high-temperature cold water or refrigerant. The air conditioning mode can better complete the task of adjusting the indoor temperature and humidity, and can realize good energy-saving effect while effectively realizing the regulation and control of the building hot and humid environment. In the temperature and humidity independent control air conditioning system, the temperature of high-temperature cold water or a refrigerant required by temperature control is generally about 16-18 ℃, at the moment, the evaporation temperature of a cold source required by a compression refrigeration mode can be far higher than that corresponding to a conventional condensation dehumidification mode, and the energy efficiency of the refrigeration system can be greatly improved. At present, various high-temperature water chilling units are available, the requirements of different occasions on high-temperature cold water can be met, and important technical support is provided for popularization and application of an independent temperature and humidity control air conditioning system. How to better exert the higher energy efficiency level of the high-temperature cold water, and the high-temperature cold water is used as a cold source as much as possible is an important way for further improving the energy efficiency of the temperature and humidity independent control air conditioning system.
On the other hand, humidity control is an important task of an air conditioning system, and a condensation dehumidification method is an optional method for independently controlling a humidity control system in the air conditioning system. In recent years, in order to further improve the energy efficiency level of the condensation dehumidification method, there is an air treatment process of precooling dehumidified air with high-temperature cold water and further dehumidifying the air with low-temperature cold water or a low-temperature refrigerant. However, in the air dehumidification process, when low-temperature cold water is used for further dehumidification, a system needs to be provided with an independent low-temperature cold water unit and corresponding cold water pipelines, and at the moment, two sets of cold water pipelines exist in the system, so that the complexity of the system is greatly increased; when the low-temperature refrigerant is adopted for condensation and dehumidification, the condensation heat removal mode of the independent heat pump cycle needs to be considered in a unified way, and an independent cooling water pipeline needs to be arranged for heat removal or an air cooling mode is used for heat removal, so that the complexity of the system is increased, and the energy efficiency level of the system is limited by the air cooling mode. Therefore, how to further improve the performance of the condensation and dehumidification treatment process and reduce the complexity of the system is an important problem to be solved for further optimizing the humidity treatment system.
Disclosure of Invention
In view of the problems in the background art, an object of the present invention is to provide an independent temperature and humidity control air conditioning system using high-temperature cold water for precooling, which has better processing energy efficiency, simplified pipelines and low system complexity.
In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides an utilize humiture independent control air conditioning system of high temperature cold water precooling which characterized in that: the system comprises a high-temperature refrigeration station, a sensible heat tail end and an air dehumidification processing unit, wherein the sensible heat tail end and the air dehumidification processing unit are arranged indoors, and the high-temperature refrigeration station comprises a high-temperature water chilling unit and a chilled water pump; the air dehumidification processing unit includes precooling surface cooler, evaporimeter, compressor, water-cooling surface cooler and choke valve, evaporimeter, compressor, water-cooling surface cooler and the choke valve connects gradually and constitutes refrigerant circulation circuit, precooling surface cooler with the evaporimeter is arranged in proper order and is waited to dehumidify on the air passage, high temperature cooling water set passes through the frozen water pump respectively with terminal, the precooling surface cooler of sensible heat, water-cooling surface cooler are connected, the return water pipeline of terminal, the precooling surface cooler of sensible heat and water-cooling surface cooler with high temperature cooling water set connects.
The sensible heat tail end is a plurality of, and the dispersed setting is indoor.
The air dehumidification processing unit is a plurality of, and the dispersion sets up indoor.
The sensible heat tail end is a dry type fan coil or a radiation plate.
The evaporator is pre-filled with liquid refrigerant.
Due to the adoption of the technical scheme, the invention has the following advantages: 1. the high-temperature cold water in the high-temperature water chilling unit flows into the sensible heat tail end, the precooling surface air cooler and the water-cooling surface air cooler, is respectively changed into high-temperature cold water return water after heat exchange with indoor air or wall surface, air to be dehumidified and refrigerant steam, and then flows back to the high-temperature water chilling unit to complete the circulation process of the high-temperature cold water. 2. The high-temperature water chilling unit in the high-temperature refrigeration station is connected with the sensible heat tail end and the precooling surface cooler, and high-temperature cold water enters the sensible heat tail end and the precooling surface cooler, so that the sensible heat tail end and the precooling surface cooler exchange heat with indoor air, wall surfaces and the like, and the indoor temperature can be adjusted. 3. The refrigerant circulation loop comprises an evaporator, a compressor and a water-cooled surface air cooler, wherein a liquid refrigerant is preset in the evaporator, the evaporator is connected with the compressor, the compressor is connected with the water-cooled surface air cooler, the water-cooled surface air cooler is connected with the evaporator, water vapor in air to be dehumidified is condensed by heat exchange of the air to be dehumidified in an evaporator chamber, the liquid refrigerant in the evaporator is heated and then changed into refrigerant vapor to enter the compressor, the refrigerant vapor is compressed by the compressor and then enters the water-cooled surface air cooler to be condensed, and the condensed liquid refrigerant flows into the evaporator to complete heat pump circulation, so that the refrigerant circulation loop dehumidifies the air to be dehumidified to adjust the indoor humidity. 4. According to the invention, the high-temperature water chilling unit is connected with the water-cooling surface cooler, and high-temperature cold water flows into the water-cooling surface cooler to take away heat of the liquid refrigerant in the water-cooling surface cooler, so that the refrigerant circulation loop can normally run, therefore, the energy efficiency is optimized, the pipeline is simplified, the complexity of the system is reduced, and the high-efficiency operation of the air-conditioning system is realized. 5. The air dehumidification processing unit comprises the precooling surface cooler and the refrigerant circulation loop, and after being precooled by the precooling surface cooler, the dehumidified air enters the refrigerant circulation loop to be dehumidified, so that the dehumidification effect of the air dehumidification processing unit is good. 6. The sensible heat tail end of the invention can be a dry type fan coil or a radiation plate, so that the high-temperature cold water in the sensible heat tail end can realize effective heat exchange with indoor air or an indoor high-temperature wall surface, and can effectively remove indoor heat.
Drawings
Fig. 1 is a schematic diagram of the operation of the present invention.
Detailed Description
The invention is described in detail below with reference to the figures and examples.
As shown in fig. 1, the present invention includes a high temperature refrigerating station a, a sensible heat terminal 1, and an air dehumidification processing unit B, wherein the sensible heat terminal 1 and the air dehumidification processing unit B are disposed indoors. The high-temperature refrigeration station A comprises a high-temperature water chilling unit 2 and a chilled water pump 3. The air dehumidification processing unit B includes a pre-cooling surface cooler 4, an evaporator 5, a compressor 6, a water-cooling surface cooler 7, and a throttle valve 8. Wherein, the evaporator 5, the compressor 6, the water-cooled surface air cooler 7 and the throttle valve 8 are connected in sequence to form a refrigerant circulation loop; the precooling surface cooler 4 and the evaporator 5 are arranged on the air channel to be dehumidified in sequence. The high-temperature water chilling unit 2 is respectively connected with the sensible heat tail end 1, the precooling surface cooler 4 and the water-cooling surface cooler 7 through the refrigerating water pump 3, and the return water pipelines of the sensible heat tail end 1, the precooling surface cooler 4 and the water-cooling surface cooler 7 are connected with the high-temperature water chilling unit 2.
In the above embodiment, the sensible heat terminals 1 are distributed in parallel and are disposed indoors, so that the requirements of multiple terminals can be met.
In the above embodiment, the air dehumidification processing units B are dispersedly disposed in parallel indoors, so as to effectively meet the demand for indoor humidity adjustment.
In the above embodiment, the sensible tip 1 is a dry fan coil or radiant panel.
In the above embodiment, the evaporator 5 is pre-charged with liquid refrigerant.
The working principle of the invention is as follows:
the refrigeration water pump 3 conveys high-temperature cold water to the sensible heat tail end 1, the precooling surface air cooler 4 and the water-cooling surface air cooler 7, the sensible heat tail end 1 exchanges heat with indoor air, wall surfaces and the like to adjust indoor temperature, high-temperature cold water backwater in the sensible heat tail end 1 flows into the high-temperature water chilling unit 2 to be refrigerated, the precooling surface air cooler 4 precools the air to be dehumidified, the high-temperature cold water backwater in the precooling surface air cooler 4 flows into the high-temperature water chilling unit 2 to be refrigerated, liquid refrigerant is preset in the evaporator 5, the evaporator 5 exchanges heat with the indoor air to be dehumidified, water vapor in the air to be dehumidified is condensed, the liquid refrigerant in the evaporator 5 is heated and then changed into refrigerant vapor to enter the compressor 6, the refrigerant vapor is compressed by the compressor 6 and then enters the water-cooling surface air cooler 7 to be condensed, the condensed refrigerant is throttled by the throttle valve 8 and then flows into the evaporator 5, and then the. Further, the output end of the chilled water pump 3 is connected with a water-cooled surface air cooler 7 in a refrigerant circulation loop 6, and high-temperature cold water in the high-temperature water chilling unit 2 enters the water-cooled surface air cooler 7 through the chilled water pump 3 to exchange heat with refrigerant vapor, so that the refrigerant vapor is condensed, and the evaporator 5 can be normally used; and a return water pipeline of the water-cooled surface cooler 7 is connected with the high-temperature water chilling unit 2, and high-temperature cold water return water in the water-cooled surface cooler 7 flows into the high-temperature water chilling unit 2 for refrigeration.
The above embodiments are only for further detailed description of the object, technical solution and advantages of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. The utility model provides an utilize humiture independent control air conditioning system of high temperature cold water precooling which characterized in that: the system comprises a high-temperature refrigeration station, a sensible heat tail end and an air dehumidification processing unit, wherein the sensible heat tail end and the air dehumidification processing unit are arranged indoors, and the high-temperature refrigeration station comprises a high-temperature water chilling unit and a chilled water pump; the air dehumidification processing unit includes precooling surface cooler, evaporimeter, compressor, water-cooling surface cooler and choke valve, evaporimeter, compressor, water-cooling surface cooler and the choke valve connects gradually and constitutes refrigerant circulation circuit, precooling surface cooler with the evaporimeter is arranged in proper order and is waited to dehumidify on the air passage, high temperature cooling water set passes through the frozen water pump respectively with terminal, the precooling surface cooler of sensible heat, water-cooling surface cooler are connected, the return water pipeline of terminal, the precooling surface cooler of sensible heat and water-cooling surface cooler with high temperature cooling water set connects.
2. The independent temperature and humidity control air conditioning system for pre-cooling by using high-temperature cold water as claimed in claim 1, wherein: the sensible heat tail end is a plurality of parallel distributed devices arranged indoors.
3. The independent temperature and humidity control air conditioning system for pre-cooling by using high-temperature cold water as claimed in claim 1, wherein: the air dehumidification processing unit is a plurality of parallelly connected dispersion settings indoor.
4. The independent temperature and humidity control air conditioning system for pre-cooling by using high-temperature cold water as claimed in claim 1, wherein: the sensible heat tail end is a dry type fan coil or a radiation plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710403513.0A CN107166588B (en) | 2017-06-01 | 2017-06-01 | Temperature and humidity independent control air conditioning system capable of precooling by utilizing high-temperature cold water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710403513.0A CN107166588B (en) | 2017-06-01 | 2017-06-01 | Temperature and humidity independent control air conditioning system capable of precooling by utilizing high-temperature cold water |
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| Publication Number | Publication Date |
|---|---|
| CN107166588A CN107166588A (en) | 2017-09-15 |
| CN107166588B true CN107166588B (en) | 2020-06-16 |
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| CN201710403513.0A Active CN107166588B (en) | 2017-06-01 | 2017-06-01 | Temperature and humidity independent control air conditioning system capable of precooling by utilizing high-temperature cold water |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108332327B (en) * | 2018-03-01 | 2023-11-10 | 清华大学 | Air treatment equipment |
| CN108507049A (en) * | 2018-04-10 | 2018-09-07 | 郑州科净环境工程有限公司 | The restorative procedure of constant temperature and humidity unitary air handling unit |
| CN108800355A (en) * | 2018-06-25 | 2018-11-13 | 袁军 | A kind of air conditioning method and system |
| CN114263990B (en) * | 2021-12-03 | 2024-01-30 | 雅凯热能技术(江苏)有限公司 | Domestic central air conditioning system with fresh air dehumidification function |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0513734A2 (en) * | 1991-05-13 | 1992-11-19 | WEISS UMWELTTECHNIK GmbH | Process for conditioning air in a closable space and testing arrangement |
| CN101363648A (en) * | 2008-09-18 | 2009-02-11 | 海信（山东）空调有限公司 | Air conditioner system for independently controlling temperature and humidity and refrigeration/dehumidification method |
| CN101644469A (en) * | 2009-08-22 | 2010-02-10 | 广东申菱空调设备有限公司 | Condensation-heat recycling type temperature regulating system for dehumidifiers and control method thereof |
| CN102705920A (en) * | 2012-05-24 | 2012-10-03 | 吕智 | Double-cold-source heat pump total heat recovery humidity regulating and temperature controlling fresh air unit and control method thereof |
-
2017
- 2017-06-01 CN CN201710403513.0A patent/CN107166588B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0513734A2 (en) * | 1991-05-13 | 1992-11-19 | WEISS UMWELTTECHNIK GmbH | Process for conditioning air in a closable space and testing arrangement |
| CN101363648A (en) * | 2008-09-18 | 2009-02-11 | 海信（山东）空调有限公司 | Air conditioner system for independently controlling temperature and humidity and refrigeration/dehumidification method |
| CN101644469A (en) * | 2009-08-22 | 2010-02-10 | 广东申菱空调设备有限公司 | Condensation-heat recycling type temperature regulating system for dehumidifiers and control method thereof |
| CN102705920A (en) * | 2012-05-24 | 2012-10-03 | 吕智 | Double-cold-source heat pump total heat recovery humidity regulating and temperature controlling fresh air unit and control method thereof |
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| CN107166588A (en) | 2017-09-15 |
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