CN108931268A - A kind of fuel cell humidifying tank moisturization effect test method - Google Patents
A kind of fuel cell humidifying tank moisturization effect test method Download PDFInfo
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- CN108931268A CN108931268A CN201810663491.6A CN201810663491A CN108931268A CN 108931268 A CN108931268 A CN 108931268A CN 201810663491 A CN201810663491 A CN 201810663491A CN 108931268 A CN108931268 A CN 108931268A
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- 230000000694 effects Effects 0.000 title claims abstract description 34
- 239000000446 fuel Substances 0.000 title claims abstract description 28
- 238000010998 test method Methods 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 claims abstract description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 21
- 238000012545 processing Methods 0.000 claims abstract description 8
- 238000005206 flow analysis Methods 0.000 claims abstract description 6
- 239000007788 liquid Substances 0.000 claims description 29
- 238000012360 testing method Methods 0.000 claims description 13
- 230000005856 abnormality Effects 0.000 claims description 4
- 238000004458 analytical method Methods 0.000 claims description 4
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 238000002474 experimental method Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 27
- 235000013399 edible fruits Nutrition 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000012956 testing procedure Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
- H01M8/04492—Humidity; Ambient humidity; Water content
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
- H01M8/04828—Humidity; Water content
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fuel Cell (AREA)
Abstract
The invention discloses a kind of fuel cell humidifying tank moisturization effect test methods, two parts are calculated including flow analysis and moisturization effect, 3 σ data processings, newton/Lagrange's interpolation and 4 rank Runge-Kutta these types data processings and numerical method have been used in flow analysis, and then data and Formulae For Atmospheric Humidity obtain final result to moisturization effect calculating section according to specific experiments；The present invention by numerical operation can it is simple, calculating to a nicety is humidified the technical parameters such as tank moisturization effect and humidification water prolongation, it can be achieved that fuel cell pile moisturization effect under quick predict and each operating condition of calculating.
Description
Technical field
The present invention relates to fuel cell test device, in particular to a kind of fuel cell humidifying tank moisturization effect test side
Method.
Background technique
Proton Exchange Membrane Fuel Cells is because its energy utilization rate is high, noise and vibration is small, environmental-friendly, power combination is flexible
Etc. characteristics have become current most potential hydrogen energy source Land use systems.And Important Auxiliary equipment of the humidifier as fuel cell, increase
One of an important factor for wet effect is influence Performance data.
Since fuel battery power combines flexible feature, the galvanic pile module power of laboratory assembling is from 15kW to 240kW
It differs, that is to say, that hydrogen-oxygen feed end air inflow is across tens to thousands of mark Liter Per Minutes, and mass flow controller price is high
It is high, and multiple, higher cost need to be equipped with；Existing humidity sensor is when for testing humidification tank humidification humidity simultaneously, due to visiting
Hydrogenesis at head, can generate significant errors.
Summary of the invention
It is an object of the invention to insufficient according to prior art, provide one kind do not need to be equipped with mass flow controller,
The Humidity Test Method of high-precision humidity sensor meets and detects to quick, the high-precision of fuel cell humidifying tank moisturization effect.
The technical solution adopted by the present invention to solve the technical problems is: a kind of fuel cell humidifying tank moisturization effect test
Method, steps are as follows
S0 is sequentially connected gas-liquid separator and ball valve one in the upper end of tested humidification tank, is sequentially connected in the lower end of humidification tank
Check valve, ball valve two, air compressor machine and drier, while pressure gauge sensor, temperature sensor, liquid level are set on humidification tank and passed
Sensor and heater, and humidification tank is connect with water pump；
S1, be humidified tank flow analysis:
S11 measures the pressure in humidification tank under stable state by pressure gauge sensor, and records pressure increase Δ piTime
Δti；
S12 carries out data processing, rejecting abnormalities data with 3 σ criterion；
S13 finds out the time under unit pressure variation with Lagrange or Newton interpolating method, and passes through ideal gas behavior side
Journey leads to excess pressure and finds out quality；
S14 finds out the slope that quality changes over time under humidification tank steady operation pressure with 4 rank Runge-Kutta methods,
Flow i.e. under steady-working state can also convert standard volume flow for mass flow；
S2, humidification tank moisturization effect analysis, data and Formulae For Atmospheric Humidity obtain final result according to specific experiments:
Flow obtained in step S1 is averaged or median obtains final flow rate by S21；
S22, humidification aqueous position variation in unit time when recording humidification tank steady operation by liquid level sensor, and it is quasi- by 3 σ
Then carry out data processing；
S23 defines absolute humidity by gas phase, the humidity after calculating gas humidification.
A kind of fuel cell humidifying tank moisturization effect test method, step S11 are as follows:
Into humidification tank, injection humidification water closes ball valve two, opening ball valve one records pressure when stablizing in tank to specified liquid level L
Numerical value Pi, as pneumatics power provide pressure；
Open ball valve two, if gas outlet is discharged without obvious liquid water with gas, then it is assumed that liquid level L be can test liquid level, and
Pressure when the numerical value P of the pressure gauge sensor of record at this time, as humidification tank work in tank；
Ball valve one is closed, ball valve two is opened, so that humidification pressure inside the tank P is reduced to 0, closes ball valve two, open ball valve one, testing crew
Record n group data, every group of data be respectively in tank gauge pressure from 0 increase to PiWhen, increase Δ piWhen time Δ t, each group test note
Record m data.
A kind of fuel cell humidifying tank moisturization effect test method, step S12 are analysis institute's measured data in 3 σ
The upper lower control limit of rule, and unreasonable data are rejected as follows:
A seeks reaching specified pressure (p in n group data1、p2、…、pm) when corresponding time (t1、t2、…、tm) average value, m
I-th group of time average is in group data；
The isobaric data of b, n group correspond to time tiSample variance be, standard deviation is σi；
C, by the σ of each group of dataiMultiplied by 3, deviation is defaulted as deviation beyond the data of this range, is rejected.
A kind of fuel cell humidifying tank moisturization effect test method, the n group data of rejecting abnormalities in step S12
After value, every group of also surplus MiA value (Mi≤ m), by this n group data by Lagrangian method or Newton method, chooses appropriate Δ p and be MiRank
Interpolation.
A kind of fuel cell humidifying tank moisturization effect test method, the Lagrangian method use following public
Formula:
。
A kind of fuel cell humidifying tank moisturization effect test method, the Newton method use following formula:
(1)
(2)
(Mi+ 1)
So equation (1) arrives (Mi+ 1) it can obtain:
Because of Algebraic interpolation uniqueness and existence theorem, n times Newton's interpolation formula is constantly equal to n times Lagrange's interpolation formula, error
Remainder is also equal, i.e., are as follows:
Wherein。
A kind of fuel cell humidifying tank moisturization effect test method passes through formula m in step S14gas=
MgasRT/ (pV) obtains 4 rank Runge-Kutta methods of the n group data obtained with interpolation method when pressure is P, pressure
The slope m changed over timegas/ t, as gas flow g/s, wherein MgasFor the amount of the substance of gas, R is ideal gas
Body constant takes 8.314, T for humidification tank kelvin degree, and V is the volume in tank than water.
A kind of fuel cell humidifying tank moisturization effect test method, when humidification pressure inside the tank reaches in step S23
When to P, divides k group to test every L minute humidification tank liquid level and change, obtain the average value that unit L time liquid level changes, increasing can be obtained
The quality m of wet consumption waterwater, then the absolute humidity of humidified gas at this time can be obtained, V is to lead in the unit time
The gas volume crossed, then relative humidity are as follows:
。
The beneficial effects of the present invention are: the present invention is simple by numerical operation energy, calculate to a nicety the tank humidification effect that is humidified
The technical parameters such as fruit and humidification water prolongation are, it can be achieved that quick predict and fuel cell pile humidification effect under each operating condition of calculating
Fruit, and have many advantages, such as that step is simple, written in code is easy, outfit is few, inexpensive, meet and fuel cell humidifying tank is increased
Quick, the high-precision of wet effect detect.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of test device of the present invention.
Each appended drawing reference are as follows: 1-humidification tank, 2-air compressor machines, 3-water pumps, 4-driers, 5-pressure gauge sensor,
6-temperature sensors, 7-liquid level sensors, 8-heaters, 9-gas-liquid separators, 10-check valves, 11-ball valves one,
12-ball valves two.
Specific embodiment
The present invention, which provides, a kind of only needs air compressor machine 2, temperature sensor 6(thermometer), liquid level sensor 7(liquidometer),
Heater 8, pressure gauge sensor 5(pressure gauge) etc. conventional detections instrument, moisturization effect can quickly be tested by numerical operation
Method.
Be sequentially connected gas-liquid separator 9 and ball valve 1 in the upper end of tested humidification tank 1, the lower end of humidification tank 1 according to
Secondary connection check valve 10(check-valves), ball valve 2 12, air compressor machine 2 and drier 4, while setting pressure gauge passes on humidification tank 1
Sensor 5, temperature sensor 6, liquid level sensor 7 and heater 8, and humidification tank 1 is connect with water pump 3.
Only need material apparatus described above can it is simple, calculate to a nicety when being humidified tank moisturization effect and humidification water supplement
Between equal technical parameters.
Testing procedure of the invention are as follows:
1) be humidified tank flow analysis.3 σ data processings, newton/Lagrange's interpolation and 4 rank Runge- have been used in flow analysis
The data processing of Kutta these types and numerical method.
By water pump 3, into humidification tank 1, injection humidification water closes ball valve 2 12, opening ball valve 1, note to specified liquid level L
Record pressure value P when stablizing in tanki, as pneumatics power provide pressure.
Ball valve 2 12 is opened, if gas outlet is discharged without obvious liquid water with gas, then it is assumed that liquid level L is can experimental liquid
Position, and the numerical value P of pressure gauge sensor 5 at this time is recorded, pressure when as humidification tank works in tank.
2) ball valve 1 is closed, ball valve 2 12 is opened, so that pressure P in humidification tank 1 is reduced to 0, closes ball valve 2 12, open ball
Valve 1, testing crew record n group data, every group of data be respectively in tank gauge pressure from 0 increase to PiWhen, increase Δ piWhen
Between Δ t, m data of each group test data sheet.
3) the upper lower control limit in 3 σ rule is surveyed in analysis, and rejects unreasonable data, and method is as follows:
A seeks reaching specified pressure (p in n group data1、p2、…、pm) when corresponding time (t1、t2、…、tm) average value, m
I-th group of time average is in group data；
The isobaric data of b, n group correspond to time tiSample variance be, standard deviation is σi；
C, by the σ of each group of dataiMultiplied by 3, deviation is defaulted as deviation beyond the data of this range, is rejected.
4) n group data after excluding outlier, every group of also surplus MiA value (Mi≤ m), this n group data is passed through into Lagrangian method
Or Newton method, it chooses appropriate Δ p and is MiRank interpolation.
Lagrangian method:
Newton method:
(1)
(2)
(Mi+ 1)
So equation (1) arrives (Mi+ 1) it can obtain:
Because of Algebraic interpolation uniqueness and existence theorem, n times Newton's interpolation formula is constantly equal to n times Lagrange's interpolation formula, error
Remainder is also equal, i.e., are as follows:
Wherein。
5) it can be obtained n=pV/ (RT) by pV=nRT, and n=mgas/Mgas, so mgas = MgasPV/ (RT), Mgas
Be that take 8.314, T be humidification tank kelvin degree to ideal gas constant for the amount of the substance of gas, R, V be in tank than water
Volume.
By 4 rank Runge-Kutta methods of the n group data obtained with interpolation method, can be obtained pressure be P when, pressure with
The slope m of time changegas/ t, as gas flow g/s, can also be converted to by density volume flow sL/min or
A mouthful flow velocity m/s is calculated according to outlet caliber.
6) flow velocity when being P due to the pressure that is obtained at this time by n group data has n, can be with being averaged or median
Mode obtain flow or flow velocity to the end.
7) when the pressure inside the tank that is humidified reaches P, k group is divided to test every L minutes humidification tank liquid level variation, when unit L can be obtained
Between, the quality m of humidification consumption water can be obtained in the average value of liquid level variationwater, then available humidified gas at this time is absolute wet
Degree, V is the gas volume passed through in the unit time, then relative humidity are as follows:
。
The above-described embodiments merely illustrate the principles and effects of the present invention, and the embodiment that part uses, for
For those skilled in the art, without departing from the concept of the premise of the invention, can also make it is several deformation and
It improves, these are all within the scope of protection of the present invention.
Claims (8)
1. a kind of fuel cell humidifying tank moisturization effect test method, it is characterised in that: steps are as follows
S0 is sequentially connected gas-liquid separator (9) and ball valve one (11) in the upper end of tested humidification tank (1), in humidification tank (1)
Lower end is sequentially connected check valve (10), ball valve two (12), air compressor machine (2) and drier (4), while being arranged on humidification tank (1)
Pressure gauge sensor (5), temperature sensor (6), liquid level sensor (7) and heater (8), and will humidification tank (1) and water pump (3)
Connection；
S1, be humidified tank flow analysis:
S11 measures the pressure under humidification tank (1) interior stable state by pressure gauge sensor (5), and records pressure increase Δ pi
Time Δ ti；
S12 carries out data processing, rejecting abnormalities data with 3 σ criterion；
S13 finds out the time under unit pressure variation with Lagrange or Newton interpolating method, and passes through ideal gas behavior side
Journey leads to excess pressure and finds out quality；
S14, with 4 rank Runge-Kutta methods, find out quality under humidification tank (1) steady operation pressure change over time it is oblique
Rate；
S2, humidification tank moisturization effect analysis:
Flow obtained in step S1 is averaged or median obtains final flow rate by S21；
S22, humidification aqueous position variation in unit time when recording humidification tank (1) steady operation by liquid level sensor (7), and lead to
It crosses 3 σ criterion and carries out data processing；
S23 defines absolute humidity by gas phase, the humidity after calculating gas humidification.
2. a kind of fuel cell humidifying tank moisturization effect test method according to claim 1, which is characterized in that described
Step S11 are as follows:
Into humidification tank (1), injection humidification water is closed ball valve two (12), opening ball valve one (11), is recorded steady in tank to specified liquid level L
The pressure value P of timingi, as pneumatics power provide pressure；
It opens ball valve two (12), if gas outlet is discharged without obvious liquid water with gas, then it is assumed that liquid level L is can experimental liquid
Position, and the numerical value P of pressure gauge sensor (5) at this time is recorded, pressure when as humidification tank works in tank；
It closes ball valve one (11), opens ball valve two (12), so that humidification tank (1) interior pressure P is reduced to 0, close ball valve two (12), open
Ball valve one (11), records n group data, every group of data be respectively in tank gauge pressure from 0 increase to PiWhen, increase Δ piWhen time Δ
T, m data of each group test data sheet.
3. a kind of fuel cell humidifying tank moisturization effect test method according to claim 2, which is characterized in that described
Step S12 is to analyze institute's measured data in the upper lower control limit of 3 σ rule, and reject unreasonable data as follows:
A seeks reaching specified pressure (p in n group data1、p2、…、pm) when corresponding time (t1、t2、…、tm) average value, m
I-th group of time average is in group data；
The isobaric data of b, n group correspond to time tiSample variance be, standard deviation is σi；
C, by the σ of each group of dataiMultiplied by 3, deviation is defaulted as deviation beyond the data of this range, is rejected.
4. a kind of fuel cell humidifying tank moisturization effect test method according to claim 3, which is characterized in that described
In step S12 after the n group data value of rejecting abnormalities, every group of also surplus MiA value (Mi≤ m), this n group data is passed through into Lagrangian method
Or Newton method, it chooses appropriate Δ p and is MiRank interpolation.
5. a kind of fuel cell humidifying tank moisturization effect test method according to claim 4, which is characterized in that described
Lagrangian method uses following formula:
。
6. a kind of fuel cell humidifying tank moisturization effect test method according to claim 4, which is characterized in that described
Newton method uses following formula:
(1)
(2)
(Mi+ 1)
So equation (1) arrives (Mi+ 1) it can obtain:
Because of Algebraic interpolation uniqueness and existence theorem, n times Newton's interpolation formula is constantly equal to n times Lagrange's interpolation formula, error
Remainder is also equal, i.e., are as follows:
Wherein。
7. a kind of fuel cell humidifying tank moisturization effect test method according to claim 6, which is characterized in that described
Pass through formula m in step S14gas=MgasRT/ (pV), by the n group data obtained with interpolation method with 4 rank Runge-Kutta
Method is obtained when pressure is P, the slope m that pressure changes over timegas/ t, as gas flow g/s, wherein Mgas
For the amount of the substance of gas, R is that take 8.314, T be humidification tank kelvin degree to ideal gas constant, V be in tank than water
Volume.
8. a kind of fuel cell humidifying tank moisturization effect test method according to claim 7, which is characterized in that described
In step S23 when the pressure inside the tank that is humidified reaches P, divides k group to test every L minutes humidification tank liquid level variation, obtain unit L time liquid
The quality m of humidification consumption water can be obtained in the average value of position variationwater, then the absolute humidity of humidified gas at this time can be obtained, V is the gas volume passed through in the unit time, then relative humidity are as follows:
。
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| CN110571454A (en) * | 2019-09-17 | 2019-12-13 | 武汉中极氢能产业创新中心有限公司 | System for preventing condensation of humidified gas |
| CN111082102A (en) * | 2019-12-23 | 2020-04-28 | 上海重塑能源科技有限公司 | Water knockout drum |
| CN112113752A (en) * | 2020-08-21 | 2020-12-22 | 东风汽车集团有限公司 | Fuel cell gas-liquid separator test system and method |
| CN114254248A (en) * | 2022-02-28 | 2022-03-29 | 南京大学 | Testing method and device suitable for fuel cell membrane electrode and storage medium |
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| CN112113752B (en) * | 2020-08-21 | 2021-11-30 | 东风汽车集团有限公司 | Fuel cell gas-liquid separator test system and method |
| CN114254248A (en) * | 2022-02-28 | 2022-03-29 | 南京大学 | Testing method and device suitable for fuel cell membrane electrode and storage medium |
| CN114254248B (en) * | 2022-02-28 | 2022-05-10 | 南京大学 | Test method, apparatus and computer readable storage medium applicable to fuel cell membrane electrodes |
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