CN201193860Y - Economically operating centralized air conditioning system - Google Patents
Economically operating centralized air conditioning system Download PDFInfo
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- CN201193860Y CN201193860Y CNU200820055237XU CN200820055237U CN201193860Y CN 201193860 Y CN201193860 Y CN 201193860Y CN U200820055237X U CNU200820055237X U CN U200820055237XU CN 200820055237 U CN200820055237 U CN 200820055237U CN 201193860 Y CN201193860 Y CN 201193860Y
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Abstract
The utility model relates to an economic central air conditioning system, which comprises a refrigeration host, and also comprises a cooling tower, a chilled water storage tank, a fan coil, and a control system; wherein, one end of the cooling tower is connected with one end 1 of the refrigeration host via a cooling water pump, while the other end of the cooing tower is connected directly with the other end 2 of the refrigeration host; one end of the chilled water storage tank is connected with one end 1 of the refrigerating host via a first valve, while the other end is connected in series with a second valve and a chilled water pump, and then is connected with the other end 2 of the refrigeration host; one end of the fan coil is connected with one end of the refrigeration host via a third valve and the first valve, while the other end of the fan coil is connected in series with a fourth valve, and the fourth valve is connected with the end of the chilled water storage tank which is connected with the first valve, and the fourth valve is also connected with the end of the second valve which is connected with the chilled water pump. The utility model improves the cold storage efficiency of the host, makes the host run at the highest EER, thus achieving the purposes of high efficiency and energy saving.
Description
Technical field
The utility model relates to HVAC, relates in particular to a kind of economical operation central air-conditioning system.
Background technology
Now, in central air-conditioning system, other is used for the refrigeration unit of central air-conditioning system to the centrifugal refrigerating unit relatively, it is high by about 30%～60% that Energy Efficiency Ratio (coefficient of performance) is wanted, Energy Efficiency Ratio further improves after adopting frequency converter, and operation characteristic is parabolic type, has an Energy Efficiency Ratio peak value (majority is between the loading zone about 40%～60%), but it is not to run in this interval that the plenty of time is arranged full-time, the whole year, and optimum energy-saving effect is not fully exerted.In addition, the control system that the cold-storage technology of using in central air-conditioning system adopts generally can realize functions such as warning, parameter demonstration, equipment linkage start and stop, but need the monitor staff according to weather condition, electricity price factor and load condition is artificially judged, manually control the conversion of various operating conditions, therefore there is the control inaccuracy, unhandy problem.
The utility model content
In order to overcome the deficiency that above-mentioned prior art exists, the utility model aims to provide a kind of phase change material cool storage central air-conditioning system, with the frequency conversion centrifugal refrigerating machines as refrigeration host computer, with high temperature phase change material (pcm) as cool storage medium, and be aided with intelligence control system, with the volume that reduces cold-storage groove relatively, the cold-storage efficient that improves main frame, and main frame is moved all the time, thereby reach energy-efficient purpose under the highest Energy Efficiency Ratio.
The utility model aims to provide a kind of economical operation central air-conditioning system, comprises a refrigeration host computer, and it is characterized in that: it also comprises:
One cooling tower, the one end is connected with an end end 1 of described refrigeration host computer by a cooling water pump, and the other end directly is connected with the other end end 2 of described refrigeration host computer;
One cold-storage groove, one end are connected with an end end 1 of described refrigeration host computer by one first valve, and the other end is connected successively and is connected with the other end end 2 of described refrigeration host computer behind one second valve, the chilled water pump, and the interior cool storage medium of cold-storage groove is a phase-change material;
One fan coil, the one end is connected with an end that links to each other with refrigeration host computer of described first valve by one the 3rd valve, the other end is in series with one the 4th valve, and the 4th valve is connected with an end that links to each other with first valve of described cold-storage groove and an end that links to each other with chilled water pump of second valve respectively;
Control system, be connected with thermometric contact and first, second, third and fourth valve of the end that links to each other with refrigeration host computer of the end that links to each other with second valve of an end end 1 of the two ends of described fan coil, refrigeration host computer, chilled water pump, cooling water pump respectively, according to the switch of built-in algorithms and program realization valve, conversion operation operating mode.
In above-mentioned a kind of economical operation central air-conditioning system, described refrigeration host computer is the frequency conversion centrifugal refrigerating machines that includes evaporimeter, condenser, compressor and throttling arrangement.
Owing to adopted above-mentioned technical solution, refrigeration host computer in the utility model is the centrifugal unit of frequency conversion, the type unit can be realized the economical operation of this central air-conditioning system by control system, utilize it efficiently to reach the converting operation characteristic, the centrifugal function of frequency conversion is all the time with the highest Energy Efficiency Ratio operation.Control system in the utility model is except the function that possesses existing automatic control system, can also judge automatically according to weather condition, electricity price factor and load condition, by " with sufficient paddy electricity, less with ordinary telegram, keep away and use the peak " the automatic conversion of controlling various operating conditions of electricity consumption principle, promptly, if, then carry out the cold-storage operating mode in paddy electricity period; If in peak electricity period, and the residue cold storage capacity can satisfy the peak electricity refrigeration duty in period, and then main frame does not move, by the independent cooling of cold-storage groove; If can not satisfy, then main frame cooling operation, when main frame high energy efficiency than under the cold of operation output during less than the air-conditioning refrigeration duty, not enough cold discharges from cold-storage groove; Otherwise unnecessary cold is stored in the cold-storage groove, discharges during in order to deficiency; When control system monitored the satisfied residue of cold-storage groove cold air conditioner load, then main frame did not move, by the independent cooling of cold-storage groove.The operating cost of this air-conditioning system improves, makes full use of tou power price and greatly reduce because of the main frame refrigerating efficiency.
Description of drawings
Fig. 1 is the system block diagram of a kind of economical operation central air-conditioning system of the utility model;
Fig. 2 is the refrigeration host computer list cold-storage operating mode schematic diagram of a kind of economical operation central air-conditioning system of the utility model;
Fig. 3 is the associating cooling operating mode schematic diagram of a kind of economical operation central air-conditioning system of the utility model;
Fig. 4 is the cooling of a kind of economical operation central air-conditioning system of the utility model cold-storage operating mode schematic diagram of holding concurrently;
Fig. 5 is the refrigeration host computer list cooling operating mode schematic diagram of a kind of economical operation central air-conditioning system of the utility model;
Fig. 6 is the cold-storage groove list cooling operating mode schematic diagram of a kind of economical operation central air-conditioning system of the utility model.
The specific embodiment
Below by embodiment particularly and be described in detail in conjunction with the accompanying drawings.
See also Fig. 1 to Fig. 6, the utility model, it is a kind of economical operation central air-conditioning system, comprise refrigeration host computer 1, cooling tower 2, cold-storage groove 3, fan coil 4, first, second, third and fourth valve 51,52,53,54, control system 6, chilled water pump 71, cooling water pump 72, wherein, refrigeration host computer 1 is for including the frequency conversion centrifugal refrigerating machines (not shown) of evaporimeter, condenser, compressor and throttling arrangement.
One end end 21 of cooling tower 2 is connected with the end 1 of refrigeration host computer 1 by cooling water pump 72, and other end end 22 directly is connected with the end 2 of refrigeration host computer 1;
One end end 31 of cold-storage groove 3 is connected with the end 1 of refrigeration host computer 1 by first valve 51, and connect successively second valve 52, chilled water pump 71 of other end end 32 then is connected with the end 2 of refrigeration host computer 1;
As shown in Figure 2, the utility model is when cold-storage, the 3rd valve 53 is closed, first, second valve 51,52 is opened, chilled water is come out to enter cold-storage groove 3 through first valve 51 by the evaporimeter of refrigeration host computer 1, and with groove in the cool storage medium phase-change material carry out heat exchange, phase-change material temperature is reduced undergo phase transition to store cold.Chilled water temperature after the heat exchange raises, and the evaporimeter that is transported to refrigeration host computer 1 through chilled water pump 71 that confluxes at cold-storage groove 3 collector pipe places is lowered the temperature.Cold accumulation system utilizes the low ebb electricity price to come abundant cold-storage at night, treat again cold to be discharged in second day, and by control system 6 control refrigeration host computers 1 all the time with high energy efficiency than operation.
In conjunction with Fig. 3, Fig. 4, daytime is when the needs cooling, watch-dog (not shown) monitoring of environmental temperature and air conditioner load by control system 6 change, and it is the highest to calculate compressor Energy Efficiency Ratio under which kind of operating mode, and the rotating speed that changes the centrifugal compressor of refrigeration host computer 1 by frequency converter makes it to move under optimum condition.Not enough refrigeration duty is provided by the cold-storage groove 3 of series connection.Such as the attemperating unit of control system 6 monitor the return water temperature of end 13, the leaving water temperature of end 11 raises respectively, be that the refrigerating capacity of refrigeration host computer 1 is can not satisfy requiring of air conditioner load the time, send instructions down immediately and regulate the 4th valve 54, open second valve 52, the backwater that is come out by fan coil 4 is introduced into cold-storage groove 3 coolings, and the further cooling of evaporimeter that enters refrigeration host computer 1 then after cooling water pump 72 promotes is transported to user side again.Along with the reduction of load and the increase of releasing cold cause the evaporimeter leaving water temperature of refrigeration host computer 1 to reduce, at this moment can regulate by first valve 51.When control system 6 monitored refrigeration host computer 1 moves output under maximum Energy Efficiency Ratio refrigerating capacity greater than user's air-conditioning refrigeration duty, leaving water temperature had reduced, and control system 6 was sent instruction unpack first valve 51 and stored unnecessary cold this moment.
As shown in Figure 5, monitor refrigeration host computer 1 moves output under maximum Energy Efficiency Ratio refrigerating capacity when equaling user's air-conditioning refrigeration duty, when control system 6 then by refrigeration host computer 1 direct cooling.Refrigeration host computer list cold-storage operating mode was moved automatically by the time of setting, and out of service automatically in period in the low ebb electricity price according to the second day required cold that predicts.
As shown in Figure 6, when the cold that monitors cold-storage groove 3 when control system 6 satisfied the residue load, it was out of service then to control refrigeration host computer 1, provides cold to fan coil 4 separately by cold-storage groove 3.
In sum, the utility model is cool storage medium with the frequency conversion centrifugal refrigerating machines as refrigeration host computer, with the high temperature phase change material (pcm), and be aided with intelligence control system, with the volume that reduces cold-storage groove relatively, the cold-storage efficient that improves main frame, and main frame is moved all the time under the highest Energy Efficiency Ratio, thereby the raising system effectiveness reaches energy-efficient purpose.
Below embodiment has been described in detail the utility model in conjunction with the accompanying drawings, and those skilled in the art can make the many variations example to the utility model according to the above description.Thereby some details among the embodiment should not constitute qualification of the present utility model, and the scope that the utility model will define with appended claims is as protection domain of the present utility model.
Claims (2)
1. an economical operation central air-conditioning system comprises a refrigeration host computer, and it is characterized in that: it also comprises:
One cooling tower, the one end is connected with an end end 1 of described refrigeration host computer by a cooling water pump, and the other end directly is connected with the other end end 2 of described refrigeration host computer;
One cold-storage groove, one end are connected with an end end 1 of described refrigeration host computer by one first valve, and the other end is connected successively and is connected with the other end end 2 of described refrigeration host computer behind one second valve, the chilled water pump, and cool storage medium is a phase-change material in the cold-storage groove;
One fan coil, the one end is connected with an end that links to each other with refrigeration host computer of described first valve by one the 3rd valve, the other end is in series with one the 4th valve, and the 4th valve is connected with an end that links to each other with first valve of described cold-storage groove and an end that links to each other with chilled water pump of second valve respectively;
Control system, be connected with thermometric contact and first, second, third and fourth valve of the end that links to each other with refrigeration host computer of the end that links to each other with second valve of an end end 1 of the two ends of described fan coil, refrigeration host computer, chilled water pump, cooling water pump respectively, according to the switch of built-in algorithms and program realization valve, conversion operation operating mode.
2. a kind of economical operation central air-conditioning system according to claim 1 is characterized in that: described refrigeration host computer is the frequency conversion centrifugal refrigerating machines that includes evaporimeter, condenser, compressor and throttling arrangement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820055237XU CN201193860Y (en) | 2008-01-31 | 2008-01-31 | Economically operating centralized air conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820055237XU CN201193860Y (en) | 2008-01-31 | 2008-01-31 | Economically operating centralized air conditioning system |
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| Publication Number | Publication Date |
|---|---|
| CN201193860Y true CN201193860Y (en) | 2009-02-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU200820055237XU Expired - Lifetime CN201193860Y (en) | 2008-01-31 | 2008-01-31 | Economically operating centralized air conditioning system |
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| CN (1) | CN201193860Y (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102072542A (en) * | 2011-01-26 | 2011-05-25 | 中国建筑西北设计研究院有限公司 | Tandem refrigeration air conditioning and tail end cold water storage system |
| CN102620365A (en) * | 2012-04-01 | 2012-08-01 | 广州贝龙环保热力设备股份有限公司 | Direct cooling type water cold storage air-conditioning system and operating method thereof |
| CN102967018A (en) * | 2012-12-14 | 2013-03-13 | 肖剑仁 | Ground source heat pump coupling water cool storage air-conditioning system based on independent temperature and humidity control |
| CN103277855A (en) * | 2013-05-29 | 2013-09-04 | 赖正伦 | Distributed energy storage control method and energy storage device of distributed energy storage control method |
| CN103438545A (en) * | 2013-09-06 | 2013-12-11 | 肖剑仁 | Conventional composite cold and heat source coupled water-cold-storage air conditioning system based on independent temperature and humidity control and application method thereof |
| CN104236199A (en) * | 2014-09-25 | 2014-12-24 | 湖北龙辰科技股份有限公司 | High-efficient energy-saving refrigerator system and comprehensive application technology in production |
| CN104729341A (en) * | 2015-03-31 | 2015-06-24 | 东莞市兆荣节能科技有限公司 | Phase-change material ice sphere energy storage water tank and cold water system with energy storage water tank |
| CN105042916A (en) * | 2015-08-28 | 2015-11-11 | 云南犀鸟科技有限公司 | Distributed solar grid-connected power generation refrigeration and transduction system |
| CN105318458A (en) * | 2014-07-29 | 2016-02-10 | 上海诺佛尔建筑科技发展有限公司 | Integrated cold supply system |
| CN106369871A (en) * | 2016-10-27 | 2017-02-01 | 中国水产科学研究院渔业机械仪器研究所 | Ship air-conditioning system used for tail gas adsorption refrigeration and compression refrigeration unit recombination |
| CN106524362A (en) * | 2016-12-13 | 2017-03-22 | 三峡大学 | Water-storage air conditioning system combined with landscaping |
| CN106940046A (en) * | 2017-04-13 | 2017-07-11 | 深圳沃海森科技有限公司 | Use the centrifugation cooling water air conditioner unit of evaporator type condenser |
-
2008
- 2008-01-31 CN CNU200820055237XU patent/CN201193860Y/en not_active Expired - Lifetime
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102072542B (en) * | 2011-01-26 | 2015-04-22 | 中国建筑西北设计研究院有限公司 | Tandem refrigeration air conditioning and tail end cold water storage system |
| CN102072542A (en) * | 2011-01-26 | 2011-05-25 | 中国建筑西北设计研究院有限公司 | Tandem refrigeration air conditioning and tail end cold water storage system |
| CN102620365A (en) * | 2012-04-01 | 2012-08-01 | 广州贝龙环保热力设备股份有限公司 | Direct cooling type water cold storage air-conditioning system and operating method thereof |
| CN102967018A (en) * | 2012-12-14 | 2013-03-13 | 肖剑仁 | Ground source heat pump coupling water cool storage air-conditioning system based on independent temperature and humidity control |
| CN103277855A (en) * | 2013-05-29 | 2013-09-04 | 赖正伦 | Distributed energy storage control method and energy storage device of distributed energy storage control method |
| CN103277855B (en) * | 2013-05-29 | 2016-06-08 | 赖正伦 | A kind of distributed energy-accumulation control method and accumulation of energy device thereof |
| CN103438545A (en) * | 2013-09-06 | 2013-12-11 | 肖剑仁 | Conventional composite cold and heat source coupled water-cold-storage air conditioning system based on independent temperature and humidity control and application method thereof |
| CN105318458A (en) * | 2014-07-29 | 2016-02-10 | 上海诺佛尔建筑科技发展有限公司 | Integrated cold supply system |
| CN104236199B (en) * | 2014-09-25 | 2018-08-14 | 湖北龙辰科技股份有限公司 | Energy-efficient refrigerator system and integrated application method in production |
| CN104236199A (en) * | 2014-09-25 | 2014-12-24 | 湖北龙辰科技股份有限公司 | High-efficient energy-saving refrigerator system and comprehensive application technology in production |
| CN104729341A (en) * | 2015-03-31 | 2015-06-24 | 东莞市兆荣节能科技有限公司 | Phase-change material ice sphere energy storage water tank and cold water system with energy storage water tank |
| CN105042916A (en) * | 2015-08-28 | 2015-11-11 | 云南犀鸟科技有限公司 | Distributed solar grid-connected power generation refrigeration and transduction system |
| CN106369871A (en) * | 2016-10-27 | 2017-02-01 | 中国水产科学研究院渔业机械仪器研究所 | Ship air-conditioning system used for tail gas adsorption refrigeration and compression refrigeration unit recombination |
| CN106369871B (en) * | 2016-10-27 | 2018-09-11 | 中国水产科学研究院渔业机械仪器研究所 | The marine air-conditioning system that tail gas adsorption refrigeration is used in combination with compression refigerating machine group |
| CN106524362A (en) * | 2016-12-13 | 2017-03-22 | 三峡大学 | Water-storage air conditioning system combined with landscaping |
| CN106940046A (en) * | 2017-04-13 | 2017-07-11 | 深圳沃海森科技有限公司 | Use the centrifugation cooling water air conditioner unit of evaporator type condenser |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090211 |
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| CX01 | Expiry of patent term |