CN109918732A - Environmental control system water cooler efficiency is obtained with the method for operation time limit evolution properties - Google Patents
Environmental control system water cooler efficiency is obtained with the method for operation time limit evolution properties Download PDFInfo
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- CN109918732A CN109918732A CN201910102940.4A CN201910102940A CN109918732A CN 109918732 A CN109918732 A CN 109918732A CN 201910102940 A CN201910102940 A CN 201910102940A CN 109918732 A CN109918732 A CN 109918732A
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Abstract
The present invention relates to a kind of acquisition environmental control system water cooler efficiencies with the method for operation time limit evolution properties, first, under based on the actual measurement to subway station air-conditioning system, evaluation is carried out from operation this angle of the time limit to subway station ring control equipment water cooler efficiency, the station operation time limit is divided into initial stage with the method for stratified sampling, mid-term and the Energy Efficiency Ratio at a specified future date to extract the water cooler under water cooler off-design behaviour, and it is tested using Grubbs' test method to it, the Energy Efficiency Ratio of the water cooler under design conditions is further obtained by formula scales, it converts then in conjunction with the Energy Efficiency Ratio under different load rate when dispatching from the factory provided by producer, obtain the efficiency dough softening of water cooler, data rejecting is carried out to it using Grubbs' test method again, the efficiency attenuation curve of water cooler is obtained by linear fit, and Curve reliability is examined using stratified sampling, finally obtains water cooler efficiency with the research method of the evolution properties of the operation time limit.
Description
Technical field
The present invention relates to a kind of method of water cooler efficiency evaluation, specially a kind of Environment Control System In The Metro Station equipment is cold
Water dispenser group efficiency with operation the time limit evolution properties research method.
Background technique
In the case where based on subway station thermal environment parameter change in long term, obtain main in Environment Control System In The Metro Station and system
The performance rule of equipment water cooler is wanted, to provide water cooler operational safety situation in Environment Control System In The Metro Station single devices
Under performance parameter range, to quickly examine for subway station ring control New Products access, equipment and system burst problem
The standard of disconnected and subway station ring control operation maintenance management and equipment rebuilding replacement assessment provides reference, to reach subway station heat
The comfortable operation demand of the energy conservation of the sustainable development of environment and device systems.Water cooler is as main in the thermal environment of subway station
Cold source, property evolution rule can provide reference frame for the maintenance of Environment Control System In The Metro Station water cooler.
Summary of the invention
It is an object of the invention to probe into the property evolution characteristic of Environment Control System In The Metro Station equipment water cooler, obtain cold
Performance parameter range in the case of water dispenser group operational safety is subway station ring control water cooler New Products access, cold
The bursting problem quick diagnosis of water unit equipment and the standard assessed with the replacement of water cooler equipment rebuilding provide reference, and provide
A method of environmental control system water cooler efficiency is obtained with operation time limit evolution properties.
To achieve the above object, the invention provides the following technical scheme:
A method of environmental control system water cooler efficiency is obtained with operation time limit evolution properties, firstly, based on over the ground
Under the actual measurement of iron car station air-conditioning system, subway station ring control equipment water cooler efficiency is commented from operation this angle of time limit development
The station operation time limit is divided into initial stage, mid-term and long term with the method for stratified sampling to extract the non-design of water cooler by valence
The Energy Efficiency Ratio of water cooler under operating condition, and tested using Grubbs' test method to it, further pass through formula scales
The Energy Efficiency Ratio of the water cooler under design conditions is obtained, then in conjunction with the efficiency under different load rate when dispatching from the factory provided by producer
Than converting, the efficiency dough softening of water cooler is obtained, data rejecting is carried out to it using Grubbs' test method again, is led to
It crosses linear fit and obtains the efficiency attenuation curve of water cooler, and curve reliability is examined using stratified sampling, finally obtain cold
Water dispenser group efficiency with operation the time limit evolution properties research method.
Further, the water cooler efficiency that obtains is with the specific steps packet of the research method of the evolution properties of the operation time limit
It includes:
Step 1: using stratified sampling method, the station operation time limit is divided into initial stage, mid-term and long term, from numerous subways
Extracted in station and respectively represent the above period and route and station with typical water cooler operating parameter feature, to it is different when
The water cooler of phase is surveyed respectively, and water cooler Performance Evaluating Indexes are with the efficiency of the Energy Efficiency Ratio of water cooler and water cooler
Based on specific damping degree；
Step 2: cold water average flow rate, the cold water out temperature of water cooler be can get by surveying, and then calculated
The semen donors of water cooler, and tested by Grubbs' test method to it；
Step 3: it in order to allow all water coolers that can carry out efficiency comparison under identical conditions, then needs each station
The Energy Efficiency Ratio and cooling capacity that water cooler is obtained when keeping nameplate parameter on the basis of actual measurement, and operating condition will be surveyed by formula
Under water cooler Energy Efficiency Ratio and cooling capacity be scaled water cooler Energy Efficiency Ratio and cooling capacity under design conditions；
Step 4: after the cooling capacity and Energy Efficiency Ratio after being converted, in order to water cooler run time different under energy
Effect is evaluated, and then obtains influence of the operation time limit to the decaying of Energy Efficiency Ratio, needs to obtain water cooler under different load rate
The cooling capacity for operating condition of dispatching from the factory and the Energy Efficiency Ratio of water cooler；It is obtained when water cooler is dispatched from the factory under different load rate by producer thus
Water cooler Energy Efficiency Ratio after Energy Efficiency Ratio and actual measurement conversion under different load rate compares conversion, to obtain different load rate
The Energy Efficiency Ratio of lower water cooler is with the influence of the operation time limit, the i.e. dough softening of water cooler efficiency；
Step 5: water cooler Energy Efficiency Ratio and its dough softening under each operation time limit after being examined under different load rate
Afterwards, it arranges and obtains the Energy Efficiency Ratio of the water cooler of the different operation time limits and the efficiency specific damping of water cooler by linear fit
Curve, and tested by reliability of the stratified sampling to curve obtained, water cooler efficiency is finally obtained with the operation time limit
Evolution properties.
Further, the specific method is as follows for step 4:
(1) the cooling capacity Q' after converting is surveyed by obtaining water cooler, and then water cooler rate of load condensate is calculated；
(2) Energy Efficiency Ratio of the water cooler under each rate of load condensate when combining producer to provide factory is obtained by formula (3.1) conversion
The dough softening of the water cooler Energy Efficiency Ratio under the operation time limit under the rate of load condensate,
In formula:
The S- Energy Efficiency Ratio dough softening；
Energy Efficiency Ratio when COP- water cooler is dispatched from the factory；
Unit eer under the COP'- operation time limit under same load rate；
In order to guarantee the accuracy of data, abnormal data erasing is carried out to data result, and use Grubbs' test method again
To in effective station of each period of actual measurement water cooler Energy Efficiency Ratio and its dough softening bad value reject.
Further, Environment Control System In The Metro Station water cooler is both needed to carry out normal device maintenance in the long-term use,
And do not carried out overhaul.
Further, the period of water cooler field measurement is selected in the air-conditioning season of the summer hotter moon.
Further, the division in initial stage, mid-term and long term with 3-5 be a time phase, and each time phase rise
The beginning time limit then needs to determine referring to the local subway station actual operation time limit.
The beneficial effects of the present invention are:
The present invention carries out layering in fact by being unfolded from the angle of the operation time limit, to Environmental Control System of Metro water cooler efficiency
Survey, conversion, data detection, linear fit finally obtain performance rule of the water cooler under different years in Environmental Control System of Metro
Rule, to provide the performance parameter range in the case of water cooler operational safety, to be the type subway station ring control cooling-water machine
Group New Products access, water cooler bursting problem quick diagnosis and subway environment water cooler operation maintenance management with it is cold
The standard of water dispenser group equipment rebuilding replacement assessment provides reference, to reach the sustainable development of Subway Thermal Environment and device systems
Energy saving comfortable operation demand.
Detailed description of the invention
Fig. 1 is water cooler COP trend chart；
Fig. 2 is water cooler COP dough softening trend chart；
Fig. 3 is trend chart of the water cooler COP with the operation time limit；
Fig. 4 is trend chart of the water cooler COP dough softening with the operation time limit.
Specific embodiment
The invention will be further described with embodiment with reference to the accompanying drawing.
A method of environmental control system water cooler efficiency is obtained with operation time limit evolution properties, firstly, based on over the ground
Under the actual measurement of iron car station air-conditioning system, subway station ring control equipment water cooler efficiency is commented from operation this angle of time limit development
The station operation time limit is divided into initial stage, mid-term and long term with the method for stratified sampling to extract the non-design of water cooler by valence
The Energy Efficiency Ratio of water cooler under operating condition, and tested using Grubbs' test method to it, further pass through formula scales
The Energy Efficiency Ratio of the water cooler under design conditions is obtained, then in conjunction with the efficiency under different load rate when dispatching from the factory provided by producer
Than converting, the efficiency dough softening of water cooler is obtained, data rejecting is carried out to it using Grubbs' test method again, is led to
It crosses linear fit and obtains the efficiency attenuation curve of water cooler, and curve reliability is examined using stratified sampling, finally obtain cold
Water dispenser group efficiency with operation the time limit evolution properties research method.
Water cooler efficiency, which is obtained, with the specific steps of the research method of the evolution properties of the operation time limit includes:
Step 1: using stratified sampling method, the station operation time limit is divided into initial stage, mid-term and long term, from numerous subways
Extracted in station and respectively represent the above period and route and station with typical water cooler operating parameter feature, to it is different when
The water cooler of phase is surveyed respectively, and water cooler Performance Evaluating Indexes are with the efficiency of the Energy Efficiency Ratio of water cooler and water cooler
Based on specific damping degree；
Step 2: cold water average flow rate, the cold water out temperature of water cooler be can get by surveying, and then calculated
The semen donors of water cooler, and tested by Grubbs' test method to it；
Step 3: it in order to allow all water coolers that can carry out efficiency comparison under identical conditions, then needs each station
The Energy Efficiency Ratio and cooling capacity that water cooler is obtained when keeping nameplate parameter on the basis of actual measurement, and operating condition will be surveyed by formula
Under water cooler Energy Efficiency Ratio and cooling capacity be scaled water cooler Energy Efficiency Ratio and cooling capacity under design conditions；
Step 4: after the cooling capacity and Energy Efficiency Ratio after being converted, in order to water cooler run time different under energy
Effect is evaluated, and then obtains influence of the operation time limit to the decaying of Energy Efficiency Ratio, needs to obtain water cooler under different load rate
The cooling capacity for operating condition of dispatching from the factory and the Energy Efficiency Ratio of water cooler；It is obtained when water cooler is dispatched from the factory under different load rate by producer thus
Water cooler Energy Efficiency Ratio after Energy Efficiency Ratio and actual measurement conversion under different load rate compares conversion, to obtain different load rate
The Energy Efficiency Ratio of lower water cooler is with the influence of the operation time limit, the i.e. dough softening of water cooler efficiency；
Step 5: water cooler Energy Efficiency Ratio and its dough softening under each operation time limit after being examined under different load rate
Afterwards, it arranges and obtains the Energy Efficiency Ratio of the water cooler of the different operation time limits and the efficiency specific damping of water cooler by linear fit
Curve, and tested by reliability of the stratified sampling to curve obtained, water cooler efficiency is finally obtained with the operation time limit
Evolution properties.
The specific method is as follows for step 4:
(1) the cooling capacity Q' after converting is surveyed by obtaining water cooler, and then water cooler rate of load condensate is calculated；
(2) Energy Efficiency Ratio of the water cooler under each rate of load condensate when combining producer to provide factory is obtained by formula (3.1) conversion
The dough softening of the water cooler Energy Efficiency Ratio under the operation time limit under the rate of load condensate,
In formula:
The S- Energy Efficiency Ratio dough softening；
Energy Efficiency Ratio when COP- water cooler is dispatched from the factory；
Unit eer under the COP'- operation time limit under same load rate.
In order to guarantee the accuracy of data, abnormal data erasing is carried out to data result, and use Grubbs' test method again
To in effective station of each period of actual measurement water cooler Energy Efficiency Ratio and its dough softening bad value reject.
Environment Control System In The Metro Station water cooler be both needed in the long-term use carry out normal device maintenance, and not into
Went overhaul.The period of water cooler field measurement is selected in the air-conditioning season of the summer hotter moon.The division at initial stage, mid-term and long term
With 3-5 for a time phase, and the starting time limit of each time phase is then needed referring to local subway station actual operation
The time limit determines.
Embodiment:
No. 13 line geographical north way stations of first station initial operating stage carry out data spy as typical stations when the present invention chooses actual measurement
Sign analysis.
Measuring water cooler supply water temperature according to actual measurement is 9.1-9.9 DEG C, and return water temperature is 13.7-14.3 DEG C, cooling-water machine
Group changes in flow rate range is 82.88-92.17m3/h.By formula obtain cooling capacity average value be 466kW, variation range be 427~
501kW。
Cooling capacity and COP after water cooler actual measurement converts are obtained by reduction formula, then can further obtain cooling-water machine
Group rate of load condensate.Way station cold rate of load condensate in geographical north is 65.89%, is in lower rate of load condensate state, obtains this shape finally by formula 3.1
The practical COP of the water cooler run under state has differed 18.46% with COP calculated result comparison under rate of load condensate when factory, explanation
The water cooler operating status in low-energy-efficiency than region, i.e. this rate of load condensate rate of load condensate number for being more than unit efficiency high efficient district itself
Value.Similarly, water cooler rate of load condensate, COP the and COP dough softening of other station different times can be obtained.
By can be calculated, initial stage water cooler rate of load condensate average value is 68.80%, and mid-term 76.69%, long term is
77.75%.Initial stage water cooler rate of load condensate is relatively low, and mid-term and long term are moderate duty rate area.And each period subway station ring control
Equipment water cooler COP and its dough softening are shown in Fig. 1 and Fig. 2 respectively.
In order to ensure the accuracy of data, abnormal data erasing and stratified tests, inspection are carried out using this bad value method of inspection of croup
It tests result and show that initial stage, mid-term and long term COP and COP dough softening numerical value passed this abnormal data erasing method of inspection of croup,
Subsequent use data are trust data.COP and COP dough softening data after inspection are subjected to linear fit in Excel, are intended
Conjunction curve is respectively shown in Fig. 3 and Fig. 4, it can be seen that and COP and its dough softening are obvious with the changing rule of the operation time limit,
Middle water cooler efficiency is y=-0.0506x with the change curve of the operation time limit2+0.7635x+1.6004；Water cooler efficiency
Attenuation characteristic curve with the operation time limit is y=0.0028x2-0.0338x+0.2714。
The present invention evaluates subway station ring control equipment water cooler efficiency from the angle of the operation time limit, is set with scene
Based on standby detection, different years water cooler is extracted with the method for stratified sampling and surveys sample data, and uses croup
This method of inspection rejects the unreasonable parameter in field measurement；Different years cooling-water machine under different load rate is obtained by formula scales
Energy Efficiency Ratio COP under group design conditions, in conjunction with efficiency data of dispatching from the factory under the provided different load rate of producer, finally by linear fit
Water cooler is obtained with the efficiency attenuation law of the operation time limit, and different operation time limit cold water are obtained come inspection institute by stratified sampling
The reliability of unit COP value and COP attenuation curve rule.The method of the present invention can obtain water cooler efficiency with the dynamic of the operation time limit
State changing rule provides reference frame for subway station ring control water cooler equipment rebuilding and replacement.
Claims (6)
1. a kind of environmental control system water cooler efficiency that obtains is with the method for operation time limit evolution properties, it is characterised in that: firstly,
Based under the actual measurement to subway station air-conditioning system, to subway station ring control equipment water cooler efficiency from operation this angle of the time limit
Degree carries out evaluation, and the station operation time limit is divided into initial stage, mid-term and long term to extract cooling-water machine with the method for stratified sampling
The Energy Efficiency Ratio of water cooler under group off-design behaviour, and tested using Grubbs' test method to it, further pass through
Formula scales obtain the Energy Efficiency Ratio of the water cooler under design conditions, then in conjunction with different load rate when dispatching from the factory provided by producer
Under Energy Efficiency Ratio convert, obtain the efficiency dough softening of water cooler, it counted using Grubbs' test method again
According to rejecting, the efficiency attenuation curve of water cooler is obtained by linear fit, and curve reliability is examined using stratified sampling, most
Water cooler efficiency is obtained eventually with the research method of the evolution properties of the operation time limit.
2. it is according to claim 1 obtain environmental control system water cooler efficiency with operation time limit evolution properties method,
It is characterized in that: described to obtain water cooler efficiency with the specific steps of research method of the evolution properties of the operation time limit and include:
Step 1: using stratified sampling method, the station operation time limit is divided into initial stage, mid-term and long term, from numerous subway stations
Middle extraction respectively represents the above period and route and station with typical water cooler operating parameter feature, to different times
Water cooler is surveyed respectively, and water cooler Performance Evaluating Indexes are declined with the Energy Efficiency Ratio of the Energy Efficiency Ratio of water cooler and water cooler
Based on degree of subtracting；
Step 2: cold water average flow rate, the cold water out temperature of water cooler be can get by surveying, and then calculate cold water
The semen donors of unit, and tested by Grubbs' test method to it；
Step 3: it in order to allow all water coolers that can carry out efficiency comparison under identical conditions, then needs each station cold water
The Energy Efficiency Ratio and cooling capacity that unit is obtained when keeping nameplate parameter on the basis of actual measurement, and will be surveyed under operating condition by formula
Water cooler Energy Efficiency Ratio and cooling capacity are scaled water cooler Energy Efficiency Ratio and cooling capacity under design conditions；
Step 4: after the cooling capacity and Energy Efficiency Ratio after being converted, in order to water cooler run time different under efficiency into
Row evaluation, and then influence of the operation time limit to the decaying of Energy Efficiency Ratio is obtained, it needs to obtain water cooler under different load rate and dispatches from the factory
The cooling capacity of operating condition and the Energy Efficiency Ratio of water cooler；Efficiency when water cooler is dispatched from the factory under different load rate is obtained by producer thus
Than comparing conversion with the water cooler Energy Efficiency Ratio under different load rate after actual measurement conversion, to obtain cold under different load rate
The Energy Efficiency Ratio of water dispenser group is with the influence of the operation time limit, the i.e. dough softening of water cooler efficiency；
Step 5: after the water cooler Energy Efficiency Ratio and its dough softening under each operation time limit after being examined under different load rate,
It arranges and passes through linear fit and obtain the Energy Efficiency Ratio of the different water coolers for runing the time limits and the efficiency specific damping song of water cooler
Line, and tested by reliability of the stratified sampling to curve obtained, water cooler efficiency is finally obtained with the operation time limit
Evolution properties.
3. it is according to claim 2 obtain environmental control system water cooler efficiency with operation time limit evolution properties method,
Be characterized in that: the specific method is as follows for step 4:
(1) the cooling capacity Q' after converting is surveyed by obtaining water cooler, and then water cooler rate of load condensate is calculated；
(2) it is negative to obtain this by formula (3.1) conversion for Energy Efficiency Ratio of the water cooler under each rate of load condensate when combining producer to provide factory
The dough softening of the water cooler Energy Efficiency Ratio under the operation time limit under lotus rate,
In formula:
The S- Energy Efficiency Ratio dough softening；
Energy Efficiency Ratio when COP- water cooler is dispatched from the factory；
Unit eer under the COP'- operation time limit under same load rate；
In order to guarantee the accuracy of data, abnormal data erasing is carried out to data result, and again using Grubbs' test method to reality
Water cooler Energy Efficiency Ratio and its dough softening bad value in effective station of each period of survey are rejected.
4. it is according to claim 1 or 2 obtain environmental control system water cooler efficiency with operation time limit evolution properties method,
It is characterized by: Environment Control System In The Metro Station water cooler is both needed to carry out normal device maintenance in the long-term use, and do not have
Carried out overhaul.
5. it is according to claim 1 or 2 obtain environmental control system water cooler efficiency with operation time limit evolution properties method,
It is characterized by: the period of water cooler field measurement is selected in the air-conditioning season of the summer hotter moon.
6. it is according to claim 1 or 2 obtain environmental control system water cooler efficiency with operation time limit evolution properties method,
It is characterized by: the division at initial stage, mid-term and long term with 3-5 for a time phase, and starting year of each time phase
Limit then needs to determine referring to the local subway station actual operation time limit.
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Cited By (1)
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Application publication date: 20190621 |