CN112765532B - Pollutant emission measuring method and system based on fuel consumption - Google Patents
Pollutant emission measuring method and system based on fuel consumption Download PDFInfo
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- 239000003344 environmental pollutant Substances 0.000 title claims abstract description 130
- 231100000719 pollutant Toxicity 0.000 title claims abstract description 130
- 239000000446 fuel Substances 0.000 title claims abstract description 58
- 238000000034 method Methods 0.000 title claims abstract description 52
- 238000012360 testing method Methods 0.000 claims abstract description 40
- 238000001514 detection method Methods 0.000 claims abstract description 35
- 238000005259 measurement Methods 0.000 claims abstract description 17
- 238000000691 measurement method Methods 0.000 claims abstract description 7
- 239000007789 gas Substances 0.000 claims description 35
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 claims description 18
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 16
- 239000013618 particulate matter Substances 0.000 claims description 15
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 12
- 229910052799 carbon Inorganic materials 0.000 claims description 12
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 12
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 10
- 229910002091 carbon monoxide Inorganic materials 0.000 claims description 10
- 238000004364 calculation method Methods 0.000 claims description 9
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 7
- 239000001569 carbon dioxide Substances 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 6
- 229930195733 hydrocarbon Natural products 0.000 claims description 6
- 150000002430 hydrocarbons Chemical class 0.000 claims description 6
- 239000003345 natural gas Substances 0.000 claims description 6
- 238000012216 screening Methods 0.000 claims description 6
- 238000004458 analytical method Methods 0.000 claims description 4
- 239000000356 contaminant Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 239000004215 Carbon black (E152) Substances 0.000 claims description 2
- 230000007613 environmental effect Effects 0.000 description 17
- 238000011156 evaluation Methods 0.000 description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 8
- 238000003915 air pollution Methods 0.000 description 7
- MGWGWNFMUOTEHG-UHFFFAOYSA-N 4-(3,5-dimethylphenyl)-1,3-thiazol-2-amine Chemical compound CC1=CC(C)=CC(C=2N=C(N)SC=2)=C1 MGWGWNFMUOTEHG-UHFFFAOYSA-N 0.000 description 4
- 229910002089 NOx Inorganic materials 0.000 description 4
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 4
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Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
- G06F17/10—Complex mathematical operations
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F9/00—Measuring volume flow relative to another variable, e.g. of liquid fuel for an engine
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/06—Investigating concentration of particle suspensions
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0036—Specially adapted to detect a particular component
- G01N33/0037—Specially adapted to detect a particular component for NOx
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0036—Specially adapted to detect a particular component
- G01N33/004—Specially adapted to detect a particular component for CO, CO2
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0036—Specially adapted to detect a particular component
- G01N33/0047—Specially adapted to detect a particular component for organic compounds
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01W—METEOROLOGY
- G01W1/00—Meteorology
- G01W1/02—Instruments for indicating weather conditions by measuring two or more variables, e.g. humidity, pressure, temperature, cloud cover or wind speed
Abstract
The application relates to the field of ship emission detection, in particular to a pollutant emission measurement method and system based on fuel consumption, wherein the method is applied to the system and comprises the following steps of: s1, collecting engine type information of a ship; s2, selecting and measuring components of exhaust pollutants according to the type of the engine; s3, recording test range conditions of the ship during measurement driving; s4, measuring exhaust flow information and concentration information in real time; s5, calculating the real-time fuel consumption of the ship; s6, calculating the real-time power of the engine; s7, calculating emission coefficients of various pollutants; s8, calculating specific emission; and S9, comprehensively evaluating pollutant emission of the ship engine according to the test range conditions, the real-time power, the emission coefficient and the specific emission. The application solves the problems that the normal operation of a ship engine is easily affected and potential safety hazards are easily caused to the ship by the existing measuring method for pollutant emission based on fuel consumption.
Description
Technical Field
The application relates to the field of ship emission detection, in particular to a pollutant emission measurement method and system based on fuel consumption.
Background
With the increasing deterioration of urban atmospheric environment, the atmospheric pollution of ships to the cities along the rivers and the lakes is also more and more serious, and in order to better control the ships and improve the atmospheric quality, the relevant units release the emission standards of ship engines, which prescribe the requirements of the type test of the ship engines, and the test must be carried out on engine benches. However, the environment measured indoors is different from the actual working condition, and a large error exists, so that the exhaust pollutants in the actual running process of the ship need to be measured. The existing measuring method for pollutant emission based on fuel consumption generally installs a fuel flow meter on a fuel system of a ship, and the installation of the fuel flow meter has the problems that the normal operation of a ship engine is affected and potential safety hazards are easily caused to the ship due to the fact that the fuel flow meter needs to be installed in an original pipeline.
Disclosure of Invention
The application aims to provide a pollutant emission measuring method based on fuel consumption, which solves the problems that the normal operation of a ship engine is easily affected and potential safety hazards are easily caused to the ship by the existing pollutant emission measuring method based on fuel consumption.
In order to achieve the above object, there is provided a fuel consumption-based pollutant emission measurement method comprising the steps of:
s1, acquiring engine type information of a ship, and confirming the engine type according to the engine type information;
s2, selecting and measuring components of exhaust pollutants according to the type of the engine;
s3, recording test range conditions of the ship during measurement driving; the test range conditions include weather conditions, geographic conditions, and driving conditions including a driving path, a driving speed, and a load;
s4, measuring the exhaust flow information of each pollutant and the concentration information of each pollutant in the ship exhaust in real time, and calculating the emission information of each pollutant of the ship according to the exhaust flow information and the concentration information of each pollutant;
s5, screening sub-emission information containing carbon pollutants from the emission information, and indirectly calculating the real-time fuel consumption of the ship according to the sub-emission information and a carbon balance method;
s6, calculating the real-time power of the engine according to the real-time fuel consumption and the thermal efficiency and the low heat value of the fuel;
s7, calculating emission coefficients of various pollutants according to emission information of the pollutants and the real-time fuel consumption;
s8, calculating specific emission through emission information of each pollutant and total work done by the engine in the test process;
and S9, comprehensively evaluating pollutant emission of the ship engine according to the test range conditions, the real-time power, the emission coefficient and the specific emission.
Principle and advantage:
1. in the scheme, the information such as the exhaust flow information of each pollutant in the ship exhaust and the concentration information of each pollutant are measured in real time, and only the corresponding sensor is required to be arranged at the exhaust outlet of the ship, so that the fuel flow meter is not required to be additionally arranged on the fuel system of the ship, and the normal operation of the ship engine is not influenced, and the safety is high.
2. The smaller the emission coefficient is, the lower the emission amount of the exhaust pollutant is, the less the influence on the environment is, and the larger the emission coefficient is, the higher the emission amount of the exhaust pollutant is, the greater the influence on the environment is. Similarly, a smaller emission indicates a lower ratio of the amount of exhaust gas pollutants to the total work performed by the engine, and a smaller environmental impact, and a larger emission indicates a higher ratio of the amount of exhaust gas pollutants to the total work performed by the engine, and a larger environmental impact. According to the scheme, the measurement of exhaust pollutants by the external environment can be eliminated by recording the measurement range conditions during running, and the comprehensive evaluation can be performed on the pollutant emission of the ship engine by combining the measurement range conditions, the real-time power, the emission coefficient and the specific emission, so that the final test result is more practical.
Further, the engine types include diesel type and natural gas type;
when the engine type is a diesel engine type, the components of the exhaust gas pollutants in the step S2 include nitrogen oxides NOx, carbon monoxide CO, and carbon dioxide CO 2 The particulate matter number concentration PN, the total hydrocarbon amount THC and the particulate matter PM are selectively measured;
when the engine type is natural gas type, the components of the exhaust gas pollutants in the step S2 include nitrogen oxides NOx, carbon monoxide CO and carbon dioxide CO 2 The total hydrocarbons THC, the particulate matter number concentration PN and the particulate matter PM are selectively measured.
The energy types required by different engine types are different, and components affecting the atmospheric environment in the exhaust pollutants can be measured more accurately by selecting the components for measuring different exhaust pollutants for different engine types.
Further, the emission coefficient calculation application formula is as follows:
wherein EF is P For the emission coefficient, m is the emission of each pollutant during the test, FC Total (S) Is the total fuel consumption of the engine during the test.
The smaller the emission coefficient is, the lower the emission amount of the exhaust pollutant is, the less the influence on the environment is, and the larger the emission coefficient is, the higher the emission amount of the exhaust pollutant is, the greater the influence on the environment is.
Further, the emission coefficient calculation application formula is as follows:
wherein e P For specific emission, m is the emission of each pollutant in the test process, W Total (S) The total work done by the engine during the test.
The smaller the emission, the lower the ratio of the emission amount of exhaust pollutants to the total work done by the engine, the smaller the influence on the environment, and the larger the emission, the higher the ratio of the emission amount of exhaust pollutants to the total work done by the engine, the larger the influence on the environment.
Further, the weather conditions include wind direction and wind speed, and the geographical conditions include a traveling direction of the vessel with respect to a river flow direction. The recording of weather conditions and geographical conditions facilitates the removal of disturbances from the external environment to the measurement of exhaust pollutants.
It is a second object of the present application to provide a fuel consumption based pollutant emission measurement system to which the above method is applied, the system comprising a server comprising:
and a data storage module: for receiving and storing real-time positioning information of the ship, weather conditions and geographical conditions of ship running, component information of each pollutant in the exhaust gas, concentration information of each pollutant in the exhaust gas, and exhaust flow information of each pollutant in the exhaust gas;
and a data calculation module: the method comprises the steps of calculating the running path and the running speed of the ship according to real-time positioning information; the method comprises the steps of calculating emission information of each pollutant of a ship according to exhaust flow information and concentration information; the method is also used for screening sub-emission information of the component information containing the carbon pollutants from the emission information, and indirectly calculating the real-time fuel consumption of the ship according to the sub-emission information and a carbon balance method; and also for calculating the real-time power of the engine based on the real-time fuel consumption and the thermal efficiency and lower heating value of the fuel; the method is also used for calculating the emission coefficient of each pollutant according to the emission information of each pollutant and the real-time fuel consumption; the method is also used for calculating specific emission through emission information of each pollutant and corresponding engine work;
conclusion analysis module: the method is used for comprehensively evaluating the pollutant emission of the ship engine according to the test range conditions, the real-time power, the emission coefficient and the specific emission.
Principle and advantage:
1. in the scheme, the information such as the exhaust flow information of each pollutant in the ship exhaust and the concentration information of each pollutant are measured in real time, and only the corresponding sensor is required to be arranged at the exhaust outlet of the ship, so that the fuel flow meter is not required to be additionally arranged on the fuel system of the ship, and the normal operation of the ship engine is not influenced, and the safety is high.
2. The smaller the emission coefficient is, the lower the emission amount of the exhaust pollutant is, the less the influence on the environment is, and the larger the emission coefficient is, the higher the emission amount of the exhaust pollutant is, the greater the influence on the environment is. Similarly, a smaller emission indicates a lower ratio of the amount of exhaust gas pollutants to the total work performed by the engine, and a smaller environmental impact, and a larger emission indicates a higher ratio of the amount of exhaust gas pollutants to the total work performed by the engine, and a larger environmental impact. According to the scheme, the measurement of exhaust pollutants by the external environment can be eliminated by recording the measurement range conditions during running, and the comprehensive evaluation can be performed on the pollutant emission of the ship engine by combining the measurement range conditions, the real-time power, the emission coefficient and the specific emission, so that the final test result is more practical.
Further, still include external detection terminal, external detection terminal includes:
and a positioning module: the method comprises the steps of acquiring real-time positioning information of a ship;
weather monitoring module: the method comprises the steps of detecting weather conditions and geographic conditions of ship running;
particulate matter test module: component information and concentration information for measuring each particulate contaminant in the exhaust gas;
and a gas testing module: component information and concentration information for measuring each gas pollutant in the exhaust gas;
exhaust flow test module: exhaust flow information for measuring each pollutant in the exhaust;
and a communication module: the system is used for being in communication connection with the server, and sending real-time positioning information of the ship, driving weather conditions and geographic conditions, composition information of pollutants in the exhaust gas and concentration information of the pollutants in the exhaust gas to the server.
The arrangement of the external detection terminal does not need to additionally install a fuel flow meter on a fuel system of the ship, so that the normal operation of a ship engine is not influenced, and the safety is high.
Drawings
Fig. 1 is a flow chart of a method for measuring emission of pollutants based on fuel consumption in a first embodiment of the application.
Detailed Description
The following is a further detailed description of the embodiments:
example 1
A fuel consumption based pollutant emission measurement method, substantially as shown in figure 1: the method comprises the following steps:
s1, acquiring engine type information of a ship, and confirming the engine type according to the engine type information; the engine types include diesel type and natural gas type;
s2, selecting and measuring components of exhaust pollutants according to the type of the engine; when the engine type is a diesel type, the components of the exhaust gas pollutants include nitrogen oxides NOx, carbon monoxide CO, carbon dioxide CO2, particulate matter number concentration PN, total hydrocarbons THC and particulate matter PM are selectively measured;
when the engine type is natural gas, the components of the exhaust gas pollutants include nitrogen oxides NOx, carbon monoxide CO, carbon dioxide CO2, total hydrocarbons THC, particulate matter concentration PN, and particulate matter PM selection measurements.
S3, recording test range conditions of the ship during measurement driving; the test range conditions include weather conditions, geographic conditions, and driving conditions including a driving path, a driving speed, and a load; the weather conditions include wind direction and wind speed, and the geographical conditions include a traveling direction of the vessel relative to a river flow direction.
S4, measuring the exhaust flow information of each pollutant and the concentration information of each pollutant in the ship exhaust in real time, and calculating the emission information of each pollutant of the ship according to the exhaust flow information and the concentration information of each pollutant;
s5, screening sub-emission information containing carbon pollutants from the emission information, and indirectly calculating the real-time fuel consumption of the ship according to the sub-emission information and a carbon balance method;
s6, calculating the real-time power of the engine according to the real-time fuel consumption and the thermal efficiency and the low heat value of the fuel;
s7, calculating emission coefficients of various pollutants according to emission information of the pollutants and the real-time fuel consumption; the emission coefficient calculation application formula is as follows:
wherein EF is P For the emission coefficient, m is the emission of each pollutant during the test, FC Total (S) Is the total fuel consumption of the engine during the test.
S8, calculating specific emission through emission information of each pollutant and total work done by the engine in the test process; the emission coefficient calculation application formula is as follows:
wherein e P For specific emission, m is the emission of each pollutant in the test process, W Total (S) The total work done by the engine during the test.
And S9, comprehensively evaluating pollutant emission of the ship engine according to the test range conditions, the real-time power, the emission coefficient and the specific emission.
The utility model provides a pollutant emission measurement system based on fuel consumption, above-mentioned method is applied to this system, the system includes server and external detection terminal, and external detection terminal sets up in the gas vent department of boats and ships, external detection terminal includes:
and a positioning module: the method comprises the steps of acquiring real-time positioning information of a ship;
weather monitoring module: the method comprises the steps of detecting weather conditions and geographic conditions of ship running;
particulate matter test module: component information and concentration information for measuring each particulate contaminant in the exhaust gas;
and a gas testing module: component information and concentration information for measuring each gas pollutant in the exhaust gas;
exhaust flow test module: exhaust flow information for measuring each pollutant in the exhaust;
and a communication module: the system is used for being in communication connection with the server, and sending real-time positioning information of the ship, driving weather conditions and geographic conditions, composition information of pollutants in the exhaust gas and concentration information of the pollutants in the exhaust gas to the server.
The server includes:
and a data storage module: for receiving and storing real-time positioning information of the ship, weather conditions and geographical conditions of ship running, component information of each pollutant in the exhaust gas, concentration information of each pollutant in the exhaust gas, and exhaust flow information of each pollutant in the exhaust gas;
and a data calculation module: the method comprises the steps of calculating the running path and the running speed of the ship according to real-time positioning information; the method comprises the steps of calculating emission information of each pollutant of a ship according to exhaust flow information and concentration information; the method is also used for screening sub-emission information of the component information containing the carbon pollutants from the emission information, and indirectly calculating the real-time fuel consumption of the ship according to the sub-emission information and a carbon balance method; and also for calculating the real-time power of the engine based on the real-time fuel consumption and the thermal efficiency and lower heating value of the fuel; the method is also used for calculating the emission coefficient of each pollutant according to the emission information of each pollutant and the real-time fuel consumption; the method is also used for calculating specific emission through emission information of each pollutant and corresponding engine work;
conclusion analysis module: the method is used for comprehensively evaluating the pollutant emission of the ship engine according to the test range conditions, the real-time power, the emission coefficient and the specific emission.
Embodiment two:
the second embodiment is different from the first embodiment in that: the fuel consumption-based pollutant emission measurement method further includes the steps of:
s10, an external information acquisition step: environmental information on two sides of the inland is acquired by setting an environmental parameter detection sensor at a fixed node of the inland waterway, wherein the environmental parameter detection sensor comprises a wind speed detection sensor, a wind direction detection sensor, a sulfur dioxide detection sensor, a nitrogen dioxide detection sensor, a PM10 detection sensor, a PM2.5 detection sensor, a carbon monoxide detection sensor, an ozone detection sensor and a water flow velocity sensor. The wind speed detection sensor is used for detecting wind speed, the wind direction detection sensor is used for detecting wind direction, and the water flow velocity sensor is used for detecting water flow velocity in the central area of the inland river. And comprehensively calculating an environmental air quality index AQI based on the detected sulfur dioxide, nitrogen dioxide, PM10, PM2.5, carbon monoxide and ozone, and determining an air quality level, category, and means for representing color, health effects and suggesting measures to be taken by comparing with an environmental air quality index AQI grading standard.
S11, environmental data statistics: collecting environment information, and statistically sorting the collected environment information into an environment data time curve according to the collecting time; the environment data time curve comprises a wind speed time curve, a wind direction time curve, a water flow velocity time curve and an AQI time curve;
s12, analyzing environmental data: and analyzing the highest level and the lowest level of the air pollution index AQI based on the AQI time curve, and respectively corresponding to the first time information and the second time information of the highest level and the lowest level of the air pollution index. Analyzing recommended comprehensive evaluation of pollutant emission of a ship engine capable of passing through a fixed node of a inland waterway according to the highest level of the air pollution index, a wind speed time curve, a wind direction time curve and a water flow speed time curve, and recommending the running speed of the ship according to the recommended comprehensive evaluation and the running state of the ship; the running state includes forward running and reverse running.
S13, ship navigation limiting step: generating a limiting time interval for limiting the navigation of the ship to pass through the fixed node of the inland waterway according to the first time information; generating a recommended time interval for recommending the ship to navigate through the fixed node of the inland waterway according to the second time information;
s14, ship passing detection: acquiring actual comprehensive evaluation of pollutant emission of a ship engine in the step S9, analyzing and calculating the actual comprehensive evaluation of the ship according to the actual comprehensive evaluation, the actual speed and the actual running state of the ship, detecting and analyzing whether the actual comprehensive evaluation meets the recommended comprehensive evaluation, and if so, transmitting a passing permission of a corresponding ship to pass through a fixed node of a river channel in a limited time interval; if not, the pass permission is not sent, and the recommended time interval is sent to the corresponding ship. Acquiring whether special passing approval exists for the ship, and if so, sending passing permission of the corresponding ship to pass through the fixed node of the inland waterway in the limited time interval; if the traffic license does not exist, the traffic license is not sent, and the recommended time interval is sent to the corresponding ship. Through the control of the ship traffic, the adverse effect on the environment caused by the pollutant discharged by the ship is reduced as much as possible, so that the air pollution degree on two sides of the inland river is reduced after a period of time.
A fuel consumption based pollutant emission measurement system, the server further comprising the following modules:
an external information acquisition module: the environmental parameter detection sensor is used for collecting environmental information of two sides of the inland through the fixed node setting of the inland waterway, and comprises a wind speed detection sensor, a wind direction detection sensor, a sulfur dioxide detection sensor, a nitrogen dioxide detection sensor, a PM10 detection sensor, a PM2.5 detection sensor, a carbon monoxide detection sensor, an ozone detection sensor and a water flow velocity sensor. The wind speed detection sensor is used for detecting wind speed, the wind direction detection sensor is used for detecting wind direction, and the water flow velocity sensor is used for detecting water flow velocity in the central area of the inland river. And comprehensively calculating an environmental air quality index AQI based on the detected sulfur dioxide, nitrogen dioxide, PM10, PM2.5, carbon monoxide and ozone, and determining an air quality level, category, and means for representing color, health effects and suggesting measures to be taken by comparing with an environmental air quality index AQI grading standard.
And an environmental data statistics module: the method comprises the steps of counting and sorting collected environment information into an environment data time curve according to collection time; the environment data time curve comprises a wind speed time curve, a wind direction time curve, a water flow velocity time curve and an AQI time curve;
the environmental data analysis module: the method comprises the steps of analyzing the highest level and the lowest level of the air pollution index AQI based on an AQI time curve, and respectively corresponding to the highest level and the lowest level of the air pollution index to obtain first time information and second time information. Analyzing recommended comprehensive evaluation of pollutant emission of a ship engine capable of passing through a fixed node of a inland waterway according to the highest level of the air pollution index, a wind speed time curve, a wind direction time curve and a water flow speed time curve, and recommending the running speed of the ship according to the recommended comprehensive evaluation and the running state of the ship; the running state includes forward running and reverse running.
And a ship navigation limiting module: generating a limiting time interval for limiting navigation of the ship through the fixed node of the inland waterway according to the first time information; generating a recommended time interval for recommending the ship to navigate through the fixed node of the inland waterway according to the second time information;
the ship passing detection module comprises: the system is used for obtaining the actual comprehensive evaluation of the pollutant emission of the ship engine in the conclusion analysis module, analyzing and calculating the actual comprehensive evaluation of the ship according to the actual comprehensive evaluation, the actual speed and the actual running state of the ship, detecting and analyzing whether the actual comprehensive evaluation meets the recommended comprehensive evaluation, and if so, sending a passing permission of a corresponding ship to pass through a fixed node of a river channel in a limited time interval; if not, the pass permission is not sent, and the recommended time interval is sent to the corresponding ship. Acquiring whether special passing approval exists for the ship, and if so, sending passing permission of the corresponding ship to pass through the fixed node of the inland waterway in the limited time interval; if the traffic license does not exist, the traffic license is not sent, and the recommended time interval is sent to the corresponding ship.
The foregoing is merely exemplary of the present application, and the specific structures and features well known in the art will be described in detail herein so that those skilled in the art will be able to ascertain the general knowledge of the technical field of the application, whether it is the application date or the priority date, and to ascertain all of the prior art in this field, with the ability to apply the conventional experimental means before this date, without the ability of those skilled in the art to make various embodiments with the benefit of this disclosure. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present application, and these should also be considered as the scope of the present application, which does not affect the effect of the implementation of the present application and the utility of the patent. The protection scope of the present application is subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.
Claims (4)
1. A method for measuring emission of pollutants based on fuel consumption, characterized by: the method comprises the following steps:
s1, acquiring engine type information of a ship, and confirming the engine type according to the engine type information;
s2, selecting and measuring components of exhaust pollutants according to the type of the engine;
the engine types include diesel type and natural gas type;
when the engine type is a diesel engine type, the components of the exhaust gas pollutants in the step S2 include nitrogen oxides NOx, carbon monoxide CO, and carbon dioxide CO 2 The particulate matter number concentration PN, the total hydrocarbon amount THC and the particulate matter PM are selectively measured;
when the engine type is natural gas type, the components of the exhaust gas pollutants in the step S2 include nitrogen oxides NOx, carbon monoxide CO and carbon dioxide CO 2 The total amount of hydrocarbons THC, the particulate matter concentration PN and the particulate matter PM are selectively measured;
s3, recording test range conditions of the ship during measurement driving; the test range conditions include weather conditions, geographic conditions, and driving conditions including a driving path, a driving speed, and a load;
s4, measuring the exhaust flow information of each pollutant and the concentration information of each pollutant in the ship exhaust in real time, and calculating the emission information of each pollutant of the ship according to the exhaust flow information and the concentration information of each pollutant;
s5, screening sub-emission information containing carbon pollutants from the emission information, and indirectly calculating the real-time fuel consumption of the ship according to the sub-emission information and a carbon balance method;
s6, calculating the real-time power of the engine according to the real-time fuel consumption and the thermal efficiency and the low heat value of the fuel;
s7, calculating emission coefficients of various pollutants according to emission information of the pollutants and the real-time fuel consumption;
s8, calculating specific emission through emission information of each pollutant and total work done by the engine in the test process;
s9, comprehensively evaluating pollutant emission of the ship engine according to the test range conditions, the real-time power, the emission coefficient and the specific emission;
the emission coefficient calculation application formula is as follows:
wherein,for the emission coefficient, m is the emission of the respective pollutant during the test, +.>The total fuel consumption of the engine in the test process;
the specific emission calculation application formula is as follows:
wherein,for specific emissions, m is the emissions of the respective pollutants during the test, < >>The total work done by the engine during the test.
2. The fuel consumption-based pollutant emission measurement method according to claim 1, characterized in that: the weather conditions include wind direction and wind speed, and the geographical conditions include a traveling direction of the vessel relative to a river flow direction.
3. A fuel consumption based pollutant emission measurement system characterized by: use of a fuel consumption based pollutant emission measurement method according to any one of claims 1 to 2, comprising a server comprising:
and a data calculation module: the method comprises the steps of calculating the running path and the running speed of the ship according to real-time positioning information; the method comprises the steps of calculating emission information of each pollutant of a ship according to exhaust flow information and concentration information; the method is also used for screening sub-emission information of the component information containing the carbon pollutants from the emission information, and indirectly calculating the real-time fuel consumption of the ship according to the sub-emission information and a carbon balance method; and also for calculating the real-time power of the engine based on the real-time fuel consumption and the thermal efficiency and lower heating value of the fuel; the method is also used for calculating the emission coefficient of each pollutant according to the emission information of each pollutant and the real-time fuel consumption; the method is also used for calculating specific emission through emission information of each pollutant and corresponding engine work;
conclusion analysis module: the method is used for comprehensively evaluating the pollutant emission of the ship engine according to the test range conditions, the real-time power, the emission coefficient and the specific emission.
4. The fuel consumption-based pollutant emission measurement system according to claim 3, wherein: still include external detection terminal, external detection terminal includes:
and a positioning module: the method comprises the steps of acquiring real-time positioning information of a ship;
weather monitoring module: the method comprises the steps of detecting weather conditions and geographic conditions of ship running;
particulate matter test module: component information and concentration information for measuring each particulate contaminant in the exhaust gas;
and a gas testing module: component information and concentration information for measuring each gas pollutant in the exhaust gas;
exhaust flow test module: exhaust flow information for measuring each pollutant in the exhaust;
and a communication module: the system is used for being in communication connection with the server, and sending real-time positioning information of the ship, driving weather conditions and geographic conditions, composition information of pollutants in the exhaust gas and concentration information of the pollutants in the exhaust gas to the server.
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