CN1195180C - Central water cooling direct evaporation variable ventilation quantity combined air conditioner system - Google Patents
Central water cooling direct evaporation variable ventilation quantity combined air conditioner system Download PDFInfo
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- CN1195180C CN1195180C CNB031161480A CN03116148A CN1195180C CN 1195180 C CN1195180 C CN 1195180C CN B031161480 A CNB031161480 A CN B031161480A CN 03116148 A CN03116148 A CN 03116148A CN 1195180 C CN1195180 C CN 1195180C
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Abstract
The present invention relates to a central water cooling direct evaporation combined air conditioner system with variable air volume. The present invention mainly comprises a cooling tower, a cooling water supply main pipeline, a direct evaporation air conditioner, a water cooling condensing unit, an air supply duct, variable air volume ends, etc. Cooling water after the central cooling by the cooling tower is sent to each water cooling condensing unit by a circulating pump; through heat exchange between the cooling water and refrigeration agents arranged in the water cooling condensing unit, condensation heat is carried away; then, the air is sent back to the cooling tower for central cooling; the refrigeration agents condensed through cooled by cooling water in the water cooling condensing unit are sent to the corresponding direct evaporation air conditioner after throttling by an expansion valve; afterwards, evaporation and heat absorption are carried out in a direct evaporation surface cooler; mixed air sucked in the present invention from a fresh air inlet and an air return inlet carries out the temperature drop and the dehumidification treatment by the surface cooler; subsequently, the mixed air is sent to each variable air volume end by a speed change air supply blower through the air supply duct; the variable air volume ends control and regulate the air output sent to air conditioner regions according to the temperature set of the air conditioner regions.
Description
Technical field:
What the present invention relates to is a kind of air conditioning system with variable, and particularly a kind of variable air rate combined air-conditioning system that adopts concentrated water-cooled, directly evaporates belongs to architectural environment equipment and Refrigeration Engineering technical field.
Background technology:
Follow the trail of load, indoor thermal comfort and under sub-load, can significantly save fan energy consumption preferably because air conditioning system with variable has, so its application under construction is extensive day by day.Conventional air conditioning system with variable all adopts the air conditioner of chilled water as refrigerating medium basically, deliver to each air conditioner after promptly chilled water being cooled off by main frame (refrigeration machine), and then by the chilled water of low temperature by the air/water surface cooler to the air cooling-down dehumidification treatments, the transmittance process of system thermal is air → water (chilled water) → cold-producing medium.Learn that from thermal conduction study and thermodynamic (al) principle it is many more that heat transmits media, the Energy Efficiency Ratio of system is just low more.Therefore, if adopt the direct heat transmission of air → cold-producing medium, promptly adopt direct vaporation-type air conditioner, the Energy Efficiency Ratio of system will improve.For direct vaporation-type air conditioner, it is compared with the air conditioner that adopts chilled water, has the Energy Efficiency Ratio height, does not have and freeze the advantage low with management cost.
But in existing technology, air conditioning system with variable seldom adopts direct vaporation-type air conditioner, and its reason has 2 points:
1. the restriction of cold-producing medium fed distance and height;
2. the oil return problem of lubricating oil.
Because the constraint of these two problems, directly the vaporation-type air conditioner is difficult to larger air conditioning system with variable.
Summary of the invention:
Be deficiency and the defective that overcomes prior art, the present invention adopts the mode of concentrating cooling water to cool off, solve the limited problem of direct vaporation-type air conditioner refrigeration agent conveying and lubricating oil return, thereby direct evaporation-variable air rate combined air-conditioning system is applied in the building of various scales.
This system mainly comprises cooling tower, cooling water main line, direct vaporation-type air conditioner (comprising direct vaporation-type surface cooler, variable-speed blasting blower fan, fresh wind port and return air inlet), water-cooled condensation unit, air-supply airduct and vav terminal etc.This system can be provided with a machine room at every floor face or certain zone that needs air-conditioning according to the difference of fabric structure pattern, is equipped with one or more sets water-cooled condensation units and direct vaporation-type air conditioner in each machine room.
Concentrate cooled cooling water through cooling tower, deliver to each water-cooled condensation unit by circulating pump, by with water-cooled condensation unit in cold-producing medium carry out heat exchange, take away condensation heat, and then send cooling tower back to and concentrate cooling.In each water-cooled condensation unit after water quench condensed refrigerant, by sending into corresponding directly vaporation-type air conditioner after the expansion valve throttling, evaporation heat absorption in direct vaporation-type surface cooler then; Suck the air that mixes the back by fresh wind port and return air inlet and carry out the cool-down dehumidification processing by surface cooler, and then deliver to each vav terminal by ajutage by the variable-speed blasting blower fan, vav terminal is set according to the temperature of air conditioning area, and the air output of air conditioning area is sent in control and adjusting.
Comfortableness and the energy-conservation effect of " concentrating water-cooled directly to evaporate the variable air rate combined air-conditioning system " all are tangible.The advantage that it had both possessed the comfortableness of air conditioning system with variable and had saved fan energy consumption possesses direct vaporation-type systematic energy efficiency ratio advantage of higher again, so this system compares with the air-conditioning system of routine, and its Energy Efficiency Ratio and comfortableness all have the raising of certain amplitude.
Description of drawings:
Fig. 1 is an air-conditioning system structural configuration schematic diagram of the present invention.
Be the air-conditioning system figure of three floor faces shown in the figure, the structure of every floor face is identical, wherein the 1-cooling tower, the 2-cooling water circulating pump, 3-dynamoelectric water valve, 4-fresh wind port, the direct vaporation-type surface cooler of 5-, 6-variable-speed blasting blower fan, 7-return air inlet, 8-water-cooled condensation unit, the 9-airduct of blowing, the 10-vav terminal, the 11-furred ceiling, 12-air conditioning area, 13-cooling water main line, the 14-refrigerant line, the 15-cooling water master arm that supplies water.
The specific embodiment:
Below in conjunction with accompanying drawing concrete enforcement of the present invention is further described.
As shown in Figure 1, the present invention mainly comprises cooling tower 1, cooling water circulating pump 2, dynamoelectric water valve 3, fresh wind port 4, directly vaporation-type surface cooler 5, variable-speed blasting blower fan 6, return air inlet 7, water-cooled condensation unit 8, air-supply airduct 9, vav terminal 10, furred ceiling 11, air conditioning area 12, cooling water main line 13, refrigerant line 14, the cooling water master arm 15 that supplies water.
Cooling tower 1 links to each other with cooling water main line 13, in cooling water main line 13, has settled two cooling water circulating pumps 2 respectively; Cooling water main line 13 is connected with each cooling water master arm 15 that supplies water respectively, on each cooling water master supplies water arm 15 dynamoelectric water valve 3 is installed all; Each cooling water master arm 15 that supplies water is connected with the corresponding water-cooled condensation of each floor face unit 8, in order to cooling water to be provided; Water-cooled condensation unit 8 is connected with direct vaporation-type surface cooler 5 by refrigerant line 14; Directly vaporation-type surface cooler 5 is formed direct vaporation-type air conditioner with variable-speed blasting blower fan 6, on this direct vaporation-type air conditioner two air inlets is arranged, and is respectively fresh wind port 4 and return air inlet 7; Directly the air outlet of vaporation-type air conditioner is connected with air-supply airduct 9; All have several vav terminals 10 on each air-supply airduct 9, air-supply airduct 9 and vav terminal 10 all are placed in the furred ceiling 11 of flooring.
Cooling water is delivered to cooling water master supply water arm 15 by cooling water circulating pump 2 with cooling water by cooling water main line 13 after cooling tower 1 is concentrated cooling, regulate flows by dynamoelectric water valve 3 and deliver to water-cooled condensation unit 8 again.In water-cooled condensation unit 8, cooling water and cold-producing medium carry out heat exchange, take away condensation heat, and then send cooling tower 1 back to and concentrate cooling again.Through water quench and condensed cold-producing medium, after the expansion valve throttling, send into direct vaporation-type surface cooler 5 in the water-cooled condensation unit 8 by refrigerant line 14.
Outdoor fresh air enters air conditioner by fresh wind port 4 and return air inlet 7 respectively with indoor return air and mixes, and mixed air is taken away heat by the cold-producing medium that directly evaporates in the direct vaporation-type surface cooler 5, is able to the processing of cool-down dehumidification.Air after the processing is delivered to each vav terminal 10 by variable-speed blasting blower fan 6 by ajutage 9 again, and vav terminal 10 is set according to the temperature of air conditioning area, and the air output of air conditioning area 12 is sent in control and adjusting, finally reaches the purpose of air-conditioning.
Cold-producing medium after the evaporation is back to water-cooled condensation unit 8 by refrigerant line 14, prepares to enter cold-producing medium circulation next time.
Claims (1)
1, a kind of concentrated water-cooled is directly evaporated the variable air rate combined air-conditioning system, comprise cooling tower (1), cooling water circulating pump (2), dynamoelectric water valve (3), fresh wind port (4), variable-speed blasting blower fan (6), return air inlet (7), water-cooled condensation unit (8), air-supply airduct (9), vav terminal (10), cooling water main line (13), refrigerant line (14), the cooling water master arm (15) that supplies water, cooling tower (1) links to each other with cooling water main line (13), in cooling water main line (13), has settled two cooling water circulating pumps (2) respectively; Cooling water main line (13) is connected with each cooling water master arm (15) that supplies water respectively, it is characterized in that also comprising direct vaporation-type surface cooler (5), on each cooling water master supplies water arm (15) dynamoelectric water valve (3) is installed all; Each cooling water master arm (15) that supplies water is connected with each floor face corresponding water-cooled condensation unit (8), water-cooled condensation unit (8) is connected with direct vaporation-type surface cooler (5) by refrigerant line (14), directly vaporation-type surface cooler (5) is formed direct vaporation-type air conditioner with variable-speed blasting blower fan (6), on this direct vaporation-type air conditioner, have fresh wind port (4) and return air inlet (7), directly the air outlet of vaporation-type air conditioner is connected with air-supply airduct (9), all have several vav terminals (10) on each air-supply airduct (9), air-supply airduct (9) and vav terminal (10) all are placed in the furred ceiling (11) of flooring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031161480A CN1195180C (en) | 2003-04-03 | 2003-04-03 | Central water cooling direct evaporation variable ventilation quantity combined air conditioner system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031161480A CN1195180C (en) | 2003-04-03 | 2003-04-03 | Central water cooling direct evaporation variable ventilation quantity combined air conditioner system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1474102A CN1474102A (en) | 2004-02-11 |
| CN1195180C true CN1195180C (en) | 2005-03-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031161480A Expired - Fee Related CN1195180C (en) | 2003-04-03 | 2003-04-03 | Central water cooling direct evaporation variable ventilation quantity combined air conditioner system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1195180C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100447365C (en) * | 2006-09-30 | 2008-12-31 | 张孔强 | Multi-layer constent-pressure water storing cool steel reinforcement concrete water tower |
| CN102046254A (en) * | 2008-03-28 | 2011-05-04 | 创新水科技有限公司 | A device and method for utilising surplus cooling of water in a cooling tower |
| CN102645007A (en) * | 2012-05-02 | 2012-08-22 | 福建泰兴特纸有限公司 | Central air-conditioning environmental-protection energy-saving cyclic utilization system |
| CN106152318A (en) * | 2016-08-22 | 2016-11-23 | 苏州市创建空调设备有限公司 | A kind of varying duty regulation integral system based on cooling water bus and operation method |
| CN109210683B (en) * | 2018-09-12 | 2020-01-07 | 珠海格力电器股份有限公司 | Control method for air conditioning unit used in public area and air conditioning unit |
-
2003
- 2003-04-03 CN CNB031161480A patent/CN1195180C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1474102A (en) | 2004-02-11 |
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