CN201917040U - Central air-conditioning freezing energy saving system - Google Patents
Central air-conditioning freezing energy saving system Download PDFInfo
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- CN201917040U CN201917040U CN2010206460326U CN201020646032U CN201917040U CN 201917040 U CN201917040 U CN 201917040U CN 2010206460326 U CN2010206460326 U CN 2010206460326U CN 201020646032 U CN201020646032 U CN 201020646032U CN 201917040 U CN201917040 U CN 201917040U
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- water tank
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- chilled water
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Abstract
The utility model relates to modification of energy conservation of a central-conditioning freezing system, particularly relates to an optimal design between a freeze water tank and a reheater, and discloses a central air-conditioning freezing energy saving system. The central air-conditioning freezing energy saving system aims to provide a design scheme for reducing volume and energy-saving running of the middle freeze water tank after analyzing working processes of a frequently used single-water-tank freeze water system in a central air conditioner of a building. The central air-conditioning freezing energy saving system comprises the freeze water tank, a freezing unit, a heat exchange device, the water channel reheater, a temperature acquirer and a connecting pipeline, the freeze water tank is connected with the freezing unit, water in the freeze water tank is refrigerated by the freezing unit, the freeze water tank is connected with the reheater via a pump, the water is heated to corresponding temperature by the reheater to be used by the heat exchange device and then is reconnected to the freeze water tank via the connecting pipeline after being used by the heat exchange device, a flow meter is further disposed on a pipeline between the heat exchange device and the freeze water tank, and a bypass pipeline which is disposed between the freeze water tank and the pump is connected onto the pipeline between the heat exchange device and the freeze water tank.
Description
Technical field
The utility model relates to a kind of energy-conservation improvement of central air-conditioning refrigeration system, be specifically related to the chilled water water tank and reheater between optimal design.
Background technology
Quick growth along with Chinese national economy, central air-conditioning is widely used, especially central air conditioning equipment has all been installed in the hotel in city, restaurant, megastore, public place of entertainment, large-scale office building, office building, modern production workshop in succession, it brings comfortable environment and the required temperature and humidity of industrial production environment to people, energy-saving and emission-reduction have simultaneously also become the conspicuous contradiction in the socio-economic development, be the protection environment, improve air quality, reduce greenhouse gas emission, also shoulder heavy responsibilities, also have a lot of work to do; Therefore energy-saving and emission-reduction have obtained national governments' attention; " low-carbon economy " theory that World Expo proposes is struck fire into the people's hearts especially.
For this reason: the author finds that after investigating the central air-conditioning in the building is the big power consumer.Show according to interrelated data, more American-European developed countries, building energy consumption accounts for about 30% of national total energy consumption greatly.The shared ratio of China's building energy consumption is 12%～20%, but along with the development of building industry, this ratio will increase year by year.The CO2 emission problem is most important environmental problem, and building energy consumption efficient will become extremely important like this.Investigation shows that the architectural development in Shanghai is still traditional high flow rate type development model, and central air conditioner system power consumption in many buildings accounts for 60%.From energy for building equipment, refrigeration air-conditioner particularly for building carries out energy-conservationization and has very important realistic meaning.
After investigating, the applicant finds, at present in building, area, the Shanghai central air conditioner system extensive use be that self is not with the air-conditioning heat transmission equipment of Cooling and Heat Source, its operation principle is that the freezing unit by centralized arrangement provides chilled water, heat exchange coil by fan coil, the cold of chilled water is transferred to the wind side, after being transported to conditioned space, to air cooling, dehumidifying, the performance quality of its air-conditioning system directly influences result of use.
Summary of the invention
Goal of the invention of the present utility model is: after single water tank chilled water system workflow commonly used in the building central air-conditioning is analyzed, and the design of chilled water water tank capacity and energy-saving run in the middle of proposing to reduce.
For finishing the foregoing invention purpose, the utility model is achieved in that the freezing energy conserving system of a kind of central air-conditioning, and it is by the chilled water water tank, freezing unit, and heat transmission equipment, the water route reheater, Temperature sampler and connecting pipe constitute; Described chilled water water tank is connected with freezing unit; With the refrigeration of the water in it, the chilled water water tank is connected with reheater by pump by freezing unit, is heated to relevant temperature through reheater, is used by heat transmission equipment, takes back the chilled water water tank again by connecting pipe after heat transmission equipment uses; Pipeline between heat transmission equipment and chilled water water tank also is provided with a flowmeter, it is characterized in that: be connected on the pipeline between heat transmission equipment and the chilled water water tank establishing a bypass pipeline between chilled water water tank and the pump.
Technique scheme is done further to improve, between bypass duct and heat transmission equipment, be provided with a constant current valve, be used to control the water yield that flows to bypass duct.The effect of constant current valve is to play when threeway mixes the water valve regulating pondage, keeps the effect of system water stability of flow.
Technique scheme is done further to improve, and described bypass duct is connected with pipeline between chilled water water tank and the pump by a controlled triangle mixing valve.The effect of controlled triangle mixing valve is to make a high temperature chilled water part get back to water tank, another part water is after the temperature of mixing water supply requirement when reaching work with the low temperature water outlet of chilled water water tank, deliver to the fan coil of end-equipment, can reduce high temperature reflux water and enter the temperature losses by mixture that the chilled water water tank produces.
Technique scheme is done further to improve, be provided with a chilled water circuit pipeline in the water side of pump, the other end of this pipeline is received the chilled water water tank, this return with the part cold-water reflux to water tank.In the chilled water system after improvement, have the loop by increase, the fan coil water yield of equipment hour endways, be diverted in the chilled water water tank through most of chilled water behind the water pump, have only the water yield of requirement to be sent to the fan coil of end-equipment, can overcome the influence that water pump heats up, the chilled water water tank water temperature of when work, needn't excessively lowering the temperature, also just improve the efficient of refrigerator, played the effect that reduces energy consumption.
Technique scheme is done further to improve, and described return is provided with the loop stream control valve.The effect that is provided with flow control valve is for better, the pressure of more effective minimizing refrigerator.
Description of drawings
Figure of description
Fig. 1 is the fundamental diagram of embodiment 1.
Fig. 2 is the fundamental diagram of embodiment 2.
The specific embodiment
In order further to describe structure of the present utility model, be described in more detail this reality is novel below in conjunction with accompanying drawing.
The specific embodiment 1
As described in Figure 1, the freezing energy conserving system of a kind of central air-conditioning, it is by chilled water water tank 2, freezing unit 1, heat transmission equipment 6, water route reheater 4, the first Temperature samplers, 5, the second Temperature samplers 7 and connecting pipe constitute; Described chilled water water tank 2 is connected with freezing unit 1; By freezing unit 1 water in it is freezed, chilled water water tank 2 is connected with reheater 4 by pump 3, be heated to relevant temperature through reheater 4, through first Temperature sampler 5, use by heat transmission equipment 6, after heat transmission equipment 6 uses, connect second Temperature sampler, take back chilled water water tank 2 again by connecting pipe; Pipeline between heat transmission equipment 6 and chilled water water tank also is provided with a flowmeter 8, be provided with a bypass duct 3 from chilled water water tank 6 to pump, this bypass duct lead to flowmeter and ice chest pipeline on, thereby the circulation between short circuit flow rate meter and the chilled water water tank.Junction with chilled water water tank and pump on this bypass duct is provided with a triple valve 9, and this triple valve preferably adopts controlled triangle mixing valve 9.Like this when doing, when heat transmission equipment will with temperature when not being very low, open this bypass duct; Allow and mix mutually through the interior water of water in the bypass duct of heat exchange and chilled water water tank, and then through reheater 4; Thereby alleviate the pressure of heating of reheater 4.
The specific embodiment 2
A last technical scheme is done further to improve, when having alleviated reheater 4, can also further alleviate the freezing reinforcing of freezing unit 1, specific practice is: at water outlet termination one return of pump 3, this return is logical gets back to chilled water water tank 2, is provided with loop stream control valve 11 on this return.Like this when work, the fan coil water yield of equipment hour endways, be diverted in the chilled water water tank 2 through the most of chilled water in water pump 3 backs, have only the water yield of requirement to be sent to the fan coil of end-equipment, can overcome the influence of water pump temperature rise, in the work chilled water water tank water temperature of the time needn't excessively lowering the temperature, also just improved the efficient of refrigerator, played the effect that reduces energy consumption.
Claims (7)
1. freezing energy conserving system of central air-conditioning, it is by the chilled water water tank, freezing unit, heat transmission equipment, the water route reheater, Temperature sampler and connecting pipe constitute; Described chilled water water tank is connected with freezing unit; With the refrigeration of the water in it, the chilled water water tank is connected with reheater by pump by freezing unit, is heated to relevant temperature through reheater, is used by heat transmission equipment, takes back the chilled water water tank again by connecting pipe after heat transmission equipment uses; Pipeline between heat transmission equipment and chilled water water tank also is provided with a flowmeter, it is characterized in that: be connected on the pipeline between heat transmission equipment and the chilled water water tank establishing a bypass pipeline between chilled water water tank and the pump.
2. the freezing energy conserving system of a kind of central air-conditioning according to claim 1 is characterized in that: be provided with a constant current valve between bypass duct and heat transmission equipment, be used to control the water yield that flows to bypass duct.
3. the freezing energy conserving system of a kind of central air-conditioning according to claim 1 is characterized in that: described bypass duct is connected with pipeline between chilled water water tank and the pump by controlled triangle mixing valve.
4. the freezing energy conserving system of a kind of central air-conditioning according to claim 1 is characterized in that: be provided with a chilled water circuit pipeline in the water side of pump, the other end of this pipeline is received the chilled water water tank, this return with the part cold-water reflux to water tank.
5. the freezing energy conserving system of a kind of central air-conditioning according to claim 4, it is characterized in that: described return is provided with the loop stream control valve.
6. the freezing energy conserving system of a kind of central air-conditioning according to claim 2 is characterized in that: described bypass duct is connected with pipeline between chilled water water tank and the pump by controlled triangle mixing valve.
7. according to claim 3 or the freezing energy conserving system of 6 described a kind of central air-conditioning, it is characterized in that: be provided with a chilled water circuit pipeline in the water side of pump, the other end of this pipeline is received the chilled water water tank, this return with the part cold-water reflux to water tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206460326U CN201917040U (en) | 2010-12-07 | 2010-12-07 | Central air-conditioning freezing energy saving system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206460326U CN201917040U (en) | 2010-12-07 | 2010-12-07 | Central air-conditioning freezing energy saving system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201917040U true CN201917040U (en) | 2011-08-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206460326U Expired - Fee Related CN201917040U (en) | 2010-12-07 | 2010-12-07 | Central air-conditioning freezing energy saving system |
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| Country | Link |
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| CN (1) | CN201917040U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107101406A (en) * | 2017-05-23 | 2017-08-29 | 海英荷普曼船舶设备(常熟)有限公司 | Constant temperature handpiece Water Chilling Units peculiar to vessel |
| CN110160276A (en) * | 2019-04-15 | 2019-08-23 | 上海诺冷冷暖设备有限公司 | A kind of cooling ultralow temperature cooling by wind of dual-effect type |
| CN117346250A (en) * | 2023-12-04 | 2024-01-05 | 珠海格力电器股份有限公司 | Double-working-condition air conditioning unit and control method thereof |
-
2010
- 2010-12-07 CN CN2010206460326U patent/CN201917040U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107101406A (en) * | 2017-05-23 | 2017-08-29 | 海英荷普曼船舶设备(常熟)有限公司 | Constant temperature handpiece Water Chilling Units peculiar to vessel |
| CN110160276A (en) * | 2019-04-15 | 2019-08-23 | 上海诺冷冷暖设备有限公司 | A kind of cooling ultralow temperature cooling by wind of dual-effect type |
| CN117346250A (en) * | 2023-12-04 | 2024-01-05 | 珠海格力电器股份有限公司 | Double-working-condition air conditioning unit and control method thereof |
| CN117346250B (en) * | 2023-12-04 | 2024-04-05 | 珠海格力电器股份有限公司 | Double-working-condition air conditioning unit and control method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110803 Termination date: 20131207 |