CN1546911A - Optimizing energy saving method for central air conditioner water system - Google Patents
Optimizing energy saving method for central air conditioner water system Download PDFInfo
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- CN1546911A CN1546911A CNA2003101106414A CN200310110641A CN1546911A CN 1546911 A CN1546911 A CN 1546911A CN A2003101106414 A CNA2003101106414 A CN A2003101106414A CN 200310110641 A CN200310110641 A CN 200310110641A CN 1546911 A CN1546911 A CN 1546911A
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Abstract
The invention is a kind of central air conditioning water system optimized energy-saving method. The method is: (1) carries on state testing to the assembled centre air conditioning water system, checks the flow, pressure of each segment, pump power of the water system, finds the part which has large energy consumption. (2) Uses computer to analyze according to the checked parameter, known relative technology data and known formulations, carries on optimized configure to the water system. (3) Changes the device part such as bent head, valve which has large energy consumption according to the optimized configuration result of the water system, especially uses a new pump matching with the water system performance perfectly to replace original pump. The period is short, the investment is small.
Description
Technical field: the present invention relates to a kind of air conditioner system energy saving method, particularly central air conditioning water system is optimized power-economizing method.
Background technology: the water system of central air-conditioning comprises the cooling water recirculation system and the chilled water circulatory system, existing central air conditioning water system, because there are error in theoretical device parameter of selecting for use and the actual device parameter that adopts in the improper and equipment choosing of design, even bigger error, causing many central air conditioning water systems to be in for a long time under the inefficient situation moves, thereby cause a large amount of waste of energy, the ratio of general this waste of energy is up to 20-40%, even bigger.
Summary of the invention:
The object of the present invention is to provide and a kind ofly carry out part adjustment for the central air conditioning water system structure of installation and operation, optimisation technique parameter and equipment coupling make it to reach the power-economizing method of efficient operation.
Technical solution of the present invention is that a kind of central air conditioning water system is optimized power-economizing method, it is a kind of the central air conditioning water system of installation and operation to be carried out field measurement, according to measured result, optimize operational factor, the structure of water-exchanging system more, in addition parts and unmatched equipment (water pump) improve the power-economizing method of operational efficiency, it is characterized in that:
(1) central air conditioning water system being carried out state detects on the spot, detected parameters is a discharge, the pressure at two ends of the water pressure of exit of pump pressure of supply water, import, cooling tower, condenser, evaporimeter, fan coil, gate valve, elbow connecting tube, water temperature and pump power, therefrom obtain the power consumption situation of existing water system, find out the big link member position of power consumption.
(2) according to the above-mentioned actual measurement parameter of central air conditioning water system running status and caliber, pipe range, the pipe structure parameter of existing water system pipeline, and more known pipeline structure equipment data parameters, carry out analytical calculation by computer according to relevant known relationship formula, the water pump of optimization water system and water system pipe network structure equipment is the parameters of operating part coupling in addition.
(3) according to the computer optimization result, more other parts of structure of local power consumption link make it to satisfy parameter matching and optimization and replace the new energy-saving water pump that can satisfy the water system optimization coupling in the water-exchanging system, reach energy-saving effect.
Description of drawings:
Fig. 1 is the central air conditioning water system structure chart
Fig. 2 is water pump type spectrum figure and water system pipeline hydraulic characteristic curve figure, and the convex arc curved section of type spectrum figure is corresponding high efficiency section.
Fig. 3 is to be routine water pump type spectrum figure, and rank is many, is more convenient for selecting pump.
The specific embodiment:
The present invention further specifies as follows in conjunction with specific embodiments referring to accompanying drawing:
A kind of central air conditioning water system is optimized power-economizing method, be a kind of for mounted central air conditioning water system, be optimized the adjustment reforming processing, improve the method for its operational efficiency, this method first-selection is that mounted central air conditioning water system is moved detection on the spot, the analysis to measure result, find out the big structure link of power consumption in the central air conditioning water system, pass through computer detecting data then, use known correlation computations formula to be optimized processing with relevant other the data parameter of parts of structure, the best that selection is suitable for this water system is the parts match scheme in addition, at last, adjust the suitable water system structural device of replacing parts in addition according to the computer for analysis result.
Central air conditioning water system comprises the cooling water circulation usually and two water of chilled water circulation follow system.
Referring to accompanying drawing 1, cooling water recirculation system connects formation successively by coolant pump [8], gate valve [7], connecting tube [6], condenser [5], check-valves [4], connecting tube [3], cooling tower [1], connecting tube [2]; The chilled water circulatory system connects formation successively by refrigerating water pump [9], connecting tube [12], fan coil [13], connecting tube [14], evaporimeter [15], connecting tube [11], gate valve [10].Cooling water and chilled water be circular flow in two pipe network loops respectively.Evaporimeter [15], condenser [5] are loaded in the refrigeration host computer, and fan coil [13] is that the air conditioner user of central air conditioner system has a plurality of.The elbow that includes many places such as A, B, C, D, E in each connecting pipeline [2], [3], [6], [11], [12], [14].
Central air conditioning water system selected data of when design, resistance of ducting coefficient for example, safety coefficients etc. mostly are empirical data, generally select bigger than normally, when selecting supporting water pump, also be partial to select water supply capacity bigger than normal, the real pump operating point of pipeline hydraulic characteristic curve stoning of no use causes water pump efficiency operation point not guarantee when selecting pump in addition.Above-mentioned factor causes unreasonable coupling inevitably, and the ubiquity supply-water pump is bigger than normal, and water pump is in the operation of poor efficiency situation for a long time.In addition, some local accessory in the circuit design, as gate valve, screen pack etc. are selected for use improper, also cause local resistance to increase, and cause the energy consumption useless.
It is a kind of ways of addressing this issue that central air conditioning water system of the present invention is optimized power-economizing method.
The concrete grammar that central air conditioning water system of the present invention is optimized power-economizing method is:
1, structural parameters and the running status to mounted central air conditioning water system detects on the spot, the measurement parameter is: discharge, pressure of supply water, pressure of return water, pipeline local resistance, referring to accompanying drawing 1, A, B, C, D, E etc. locate the resistance of elbow, the i.e. pressure data of pipeline a1-a24 each point among the figure in the resistance of valve [4], [7], [10] and the pipeline.Calculate the effective skill rate of water pump from measured data, measure pump motor power from machine room after, just can be regarded as out the efficient in the water pump operation.Most cases is inefficient, and can find the big parts in addition of local power consumption in the pipeline from the end pressure situation of each local accessory, is the follow-up optimization analytical calculation foundation of giving information.
2, parameter and the water system structural parameters caliber that obtains according to above-mentioned actual measurement, pipe range resistance coefficient etc., the required discharge Q of air-conditioner host, utilization known relation formula and computer stock's data, holdings comprise various characteristic curve of pump, type spectrum figure, functional expression, by computer the technology and equipment of water system are optimized configuration.
(1) optimizes Specifeca tion speeification-Yang Cheng value of selecting water pump;
Yang Cheng H and flow Q are the main foundations of selecting pump.Flow Q requires decision by air-conditioner host, can not change, and Yang Cheng H value is by the gross head loss H of water system
wWith quiet Yang Cheng H
0Decision, to circulating water supply system, visual H
0Be zero, so water pump Yang Cheng H depend on gross head loss H
w, reduce H
w, just can reduce H, by changing the big unreasonable parts in addition of resistance in the water lines, can effectively reduce the H value, analyze in conjunction with above-mentioned Q that actual measurement obtains to water system and H value simultaneously, optimize the required Yang Cheng H of water pump.
(2) Model of pump is selected in optimization for use:
The flow Q that is required by the H value of above-mentioned setting and air-conditioner host just can select water pump, but the pump of selecting be excellent, be bad? depending on that can the pump of selecting be in operation is in the high efficiency operating mode.In design in the past, the conservative safety of tendency is selected water pump bigger than normal for use, does not notice that can remove to check selected water pump with pipeline hydraulic characteristic curve move in the high efficiency operating mode.This optimization method is that strict combining with water system pipeline hydraulic characteristic curve by H that designs and Q value carried out, and the functional expression of pipeline hydraulic characteristic song is H=H
0+ SQ
2, H
0Be static lift, Q is a flow, H water pump Yang Cheng, and S pipeline loss of flood peak total impedance coefficient, only relevant with pipeline size and tubing.After pipeline was set, S was a fixed number.
The method of concrete preferred pump has Cha Tufa and algebraic method.
Cha Tufa makes pipeline hydraulic characteristic curve and type spectrum figure on characteristic curve of pump type spectrum figure Q-H curved section intersects, intersection point is water pump high efficiency operating point, these intersection points will be checked the parameter point of selecting for use pump whether can move under the high efficiency operating mode, and then by Q, the H value goes to look into choosing, satisfying Q, H value and that model water pump of pipeline hydraulic characteristic curve intersection point is arranged, is the high efficiency water pump of required choosing.Pipeline hydraulic characteristic curve and art pump performance worker line coupling intersect referring to accompanying drawing 2, and various characteristic curve of pump type spectrum figure are referring to accompanying drawing 3.
Example (1) is H=2000Q for pipeline hydraulic characteristic curve A
2, water pump demand Q=2000m
3/ h, H=34m looks into figure and selects pump.On the water pump type spectrum figure of Fig. 2, make the Q-H curve intersection of pipeline hydraulic characteristic curve A and some water pump, from figure, see, should select 8SPP32-I type water pump for use, if safety is guarded and is selected 8SPP50-I type pump for use emphatically, must cause power consumption, can see that from figure this type water pump curve and pipeline hydraulic performance curve do not have intersection point, this pump must be fallback.
Example (2) is H=4000Q for pipeline hydraulic characteristic curve B
2, required pump Yang Cheng H=42m, discharge Q=400m
3The water system of/h can consider to select 8SPP50-I type water pump, if select 8SPP32-I type pump, and because of its Yang Cheng H and desirable value differ bigger, poor stability, inadvisable.
Algebraic method.Utilizing known pipeline hydraulic characteristic curve representation formula and computer stock's serial characteristic curve of pump expression formula simultaneous equations to find the solution carries out, can quick and conveniently obtain the coordinate figure Q and the H value of 2 curve intersection points by computer, Q, the H value of certain intersection point Q, H value and designing requirement are pressed close to, just select the Model of pump on this intersection point place curve, obviously this model pump must move under the high efficiency operating mode.The utilization algebraic method is more accurate than Cha Tufa, but need have all kinds pump performance curve mathematic(al) representation.The Bi Er lobe pump industry stock of Co., Ltd has the great mass of data of this respect.
(3) result who existing central air conditioning water system is distributed rationally according to the front, existing water system is transformed, change the big local devices of resistance accessory in addition, select for use new pump to replace original water pump, wherein select for use with the good new pump of water system situation coupling the most importantly, it is the core content of this energy-conservation method.
The advantage of the inventive method is:
1, small investment, instant effect, safe and reliable
Owing to original mounted central air conditioning water system is not done big change, only needs the new water pump of selective cementation Replace pump and the local in addition parts of some pipeline of changing of former installation, such as the excessive valve of resistance coefficient, elbow etc., whole The quantities of individual work is little, and engineering time is short, small investment and instant effect. And safe and reliable, there is not any risk.
2, remarkable in economical benefits adopts the inventive method that the existing central air conditioning water system of having installed is implemented to optimize and changed The result who makes with the systematic comparison before the Optimizing Reconstruction, average energy-conservationly reaches 40%, reaches as high as more than 60%.
Claims (1)
1, a kind of central air conditioning water system is optimized power-economizing method, it is a kind of the central air conditioning water system of installation and operation to be carried out field measurement, according to measured result, optimize operational factor, the structure of water-exchanging system more, the water pump of parts and coupling in addition improves the power-economizing method of operational efficiency, it is characterized in that:
(1) the central air conditioning water system running status is detected on the spot, detected parameters is a discharge, the pressure at two ends of the water pressure of water pump import and export, cooling tower, condenser, evaporimeter, fan coil, gate valve, elbow connecting tube, water temperature and pump power, therefrom obtain the power consumption situation of existing water system, find out the member position of the big link of power consumption.
(2) according to the above-mentioned actual measurement parameter of central air conditioning water system running status and caliber, pipe range, the pipe structure parameter of existing water system pipeline, and some known pipeline structure equipment data parameters, carry out analytical calculation by computer according to relevant known relationship formula, the water pump of optimization water system and water system pipe network structure equipment is the parameters of operating part coupling in addition.
(3) according to the computer optimization result, more other parts of structure of local power consumption link make it to satisfy parameter matching and optimization and replace the new energy-saving water pump that can satisfy the water system optimization coupling in the water-exchanging system, reach energy-saving effect.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8209993B2 (en) | 2006-06-01 | 2012-07-03 | Exaflop Llc | Warm water cooling |
| CN102536962A (en) * | 2012-03-31 | 2012-07-04 | 青岛楚天节能技术有限公司 | Optimization method of circulating fluid system |
| CN101389866B (en) * | 2006-02-23 | 2013-08-21 | 刘民柱 | An industrial process efficiency method and system |
| US8974274B2 (en) | 2010-04-16 | 2015-03-10 | Google Inc. | Evaporative induction cooling |
| US9278303B1 (en) | 2012-05-29 | 2016-03-08 | Google Inc. | Managing data center airflow |
| US9313929B1 (en) | 2012-05-29 | 2016-04-12 | Google Inc. | Managing data center airflow |
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2003
- 2003-12-12 CN CNA2003101106414A patent/CN1546911A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101389866B (en) * | 2006-02-23 | 2013-08-21 | 刘民柱 | An industrial process efficiency method and system |
| US10107510B2 (en) | 2006-06-01 | 2018-10-23 | Google Llc | Warm water cooling |
| CN101523119B (en) * | 2006-06-01 | 2012-12-19 | 埃克弗洛普公司 | System and method for providing cooling air to electronic device |
| US9970670B2 (en) | 2006-06-01 | 2018-05-15 | Google Llc | Warm water cooling |
| US8209993B2 (en) | 2006-06-01 | 2012-07-03 | Exaflop Llc | Warm water cooling |
| US10551079B2 (en) | 2006-06-01 | 2020-02-04 | Google Llc | Warm water cooling |
| US10712031B2 (en) | 2006-06-01 | 2020-07-14 | Google Llc | Warm water cooling |
| US8974274B2 (en) | 2010-04-16 | 2015-03-10 | Google Inc. | Evaporative induction cooling |
| US9591792B2 (en) | 2010-04-16 | 2017-03-07 | Google Inc. | Evaporative induction cooling system for a data center |
| US10440861B2 (en) | 2010-04-16 | 2019-10-08 | Google Llc | Evaporative induction cooling system for a data center |
| US11240938B2 (en) | 2010-04-16 | 2022-02-01 | Google Llc | Evaporative induction cooling system for a data center |
| CN102536962A (en) * | 2012-03-31 | 2012-07-04 | 青岛楚天节能技术有限公司 | Optimization method of circulating fluid system |
| US9278303B1 (en) | 2012-05-29 | 2016-03-08 | Google Inc. | Managing data center airflow |
| US9313929B1 (en) | 2012-05-29 | 2016-04-12 | Google Inc. | Managing data center airflow |
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