JP6348673B1 - Fuel consumption acquisition device, fuel consumption acquisition method, and fuel consumption acquisition program - Google Patents

Abstract

A fuel consumption acquisition device that calculates FOE for each fuel type based on data that can convert or calculate the relationship between plant input energy and output energy and the mixing ratio of NBOG and FBOG in the consumed BOG. is there. Conversion factor calculation to calculate the conversion factor to convert the fuel consumption related to BOG into the fuel consumption in FO for each BOG and record it in the FO conversion factor for the reference FO Section, operation data acquisition section for acquiring operation data, cargo loading status determined from the latest operation data, fuel consumption for each FO and BOG, and conversion factor for each BOG recorded in the FO conversion factor And a fuel consumption calculation unit that calculates the total fuel consumption by converting the fuel consumption for each BOG into the fuel consumption in the FO.

Description

  The present invention relates to a technique for calculating fuel consumption of a plant, and in particular, a fuel consumption acquisition device, a fuel consumption acquisition method, and fuel for a plant that can use fuel other than FO (Fuel Oil). The present invention relates to a technology that is effective when applied to a consumption acquisition program.

  For example, in a steam turbine ship, FO such as heavy oil is burned in a boiler to generate heated steam, and this is used as secondary energy to rotate the turbine to obtain propulsion. In particular, in LNG ships that use LNG (Liquid Natural Gas) as cargo, since LNG vaporizes at about -160 ° C, LNG in the tank may gradually vaporize due to heat input from the outside. Since it cannot be avoided, the generated BOG (Boil Off Gas) is also used as fuel. In some cases, LNG in the tank is forcibly vaporized and used as fuel.

  How these fuel types (fuel types) are used in combination may be different for each LNG ship navigation period / section. Here, when BOG is used as the fuel, since the amount of heat is different from that of FO, it is necessary to consider it when calculating the amount of fuel consumed when creating an operation plan. Usually, an index related to BOG (unit heat quantity or the like) is converted into one based on FO (or vice versa).

  As a technology related to this, for example, in Japanese Patent Application Laid-Open No. 2000-142563 (Patent Document 1), in the case of burning BOG as fuel in an LNG ship and in the case of burning heavy oil or the like as alternative fuel, boiler load It is described that when calculating the insufficient heat generation amount for the command, the BOG heat generation amount is converted into a value based on the heat generation amount of the alternative fuel by the BOG heat generation amount conversion coefficient.

JP 2000-142563 A

  As described above, for example, when calculating the fuel consumption for preparing an operation plan in an LNG ship, in the prior art, an index related to BOG (for example, a fuel consumption, a generated steam amount, a power generation amount, etc. The data which can convert or calculate the relationship between the input and output energy of the fuel is converted into the one based on the FO, and the fuels of a plurality of fuel types are calculated in a unified manner.

  As a coefficient (FOE: Fuel Oil Equivalent) for converting BOG consumption into FO consumption, a preset fixed value is usually used. However, due to the chemical nature of LNG, the FOE can be different for a Laden voyage and an empty voyage (Ballast) voyage. Also in BOG, FOE can be different between NBOG (Natural Boil Off Gas) that has been naturally vaporized and FBOG (Forced Boil Off Gas) that has been forcibly vaporized. Therefore, unless the FOE value is properly used depending on the operational status (loading voyage or empty cargo voyage, NBOG / FBOG mixing ratio, etc.), it may be difficult to grasp the performance of the LNG ship, and thus to create an operation plan.

  It is also conceivable that a calorimeter and a gas composition meter are installed in an LNG ship, and the heat amounts of FO and BOG that are put into a boiler or a DF (Dual Fuel) engine are measured, and FOE is constantly calculated based on this. However, since installation of these measuring instruments is quite expensive, it may be difficult to install in practice.

  Therefore, an object of the present invention is to convert or calculate the relationship between the input energy and output energy of a plant in an LNG ship or the like that can use FO and BOG as fuel, and the mixing ratio of NBOG and FBOG in the consumed BOG. Is to provide a fuel consumption acquisition device, a fuel consumption acquisition method, and a fuel consumption acquisition program for calculating FOE for each fuel type at that time.

  The above and other objects and novel features of the present invention will be apparent from the description of this specification and the accompanying drawings.

  Of the inventions disclosed in this application, the outline of typical ones will be briefly described as follows.

  A fuel consumption acquisition device according to a typical embodiment of the present invention is a fuel consumption acquisition device that calculates fuel consumption in a ship, and is a second fuel type for a reference first fuel type. For each of the fuel types, a conversion coefficient for converting the fuel consumption amount related to the second fuel type into the fuel consumption amount of the first fuel type is calculated according to the loading state of the cargo, and the conversion coefficient recording unit A conversion coefficient calculation unit for recording, an operation data acquisition unit for acquiring operation data measured for the ship, a cargo loading state determined from the latest operation data acquired by the operation data acquisition unit, and Based on the fuel consumption amount for each of the first fuel type and the second fuel type, and the conversion factor for each of the second fuel types recorded in the conversion factor recording unit, the second fuel The fuel consumption for each species is the fuel for the first fuel species. In terms of cost amount, those having a fuel-consumption calculation unit for calculating the fuel consumption of the whole of the marine vessel.

  The present invention can also be applied to a fuel consumption acquisition program that causes a computer to operate as the fuel consumption acquisition device as described above.

  Among the inventions disclosed in the present application, effects obtained by typical ones will be briefly described as follows.

  That is, according to a typical embodiment of the present invention, data that can be converted or calculated for the relationship between the input energy and the output energy of a plant in an LNG ship or the like that can use FO and BOG as fuel is consumed. Based on the mixing ratio of NBOG and FBOG in the BOG, it becomes possible to calculate the FOE for each fuel type at that time.

It is the figure which showed the outline | summary about the structural example of the fuel consumption acquisition apparatus in one embodiment of this invention. It is the figure which showed the outline | summary about the example of the relationship between the pattern of the fuel kind used in an LNG ship, and input-output energy. It is the flowchart which showed the outline | summary about the example of the flow of a calculation process of the FO conversion coefficient in one embodiment of this invention. It is the flowchart which showed the outline | summary about the example of the flow of the calculation process of the fuel consumption amount in operation in one embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Note that components having the same function are denoted by the same reference symbols throughout the drawings for describing the embodiment, and the repetitive description thereof will be omitted. On the other hand, parts described with reference numerals in some drawings may be referred to with the same reference numerals although not illustrated again in the description of other drawings.

<Device configuration>
FIG. 1 is a diagram showing an outline of a configuration example of a fuel consumption acquisition apparatus according to an embodiment of the present invention. The fuel consumption acquisition device 1 calculates the FOE for each fuel type at that time point based on the data that can convert or calculate the relationship between the input energy and the output energy of the plant and the mixing ratio of NBOG and FBOG in the consumed BOG. A device or system that calculates and calculates the overall fuel consumption.

  In the present embodiment, an example of a plant that can use fuel other than FO will be described for an LNG ship that can use BOG generated from LNG as fuel. However, the present invention is not limited to this. In addition to LNG, it can also be applied to plants that can use LPG (Liquefied Petroleum Gas), hydrogen, or the like as fuel. In the case of an LNG ship, the data that can convert or calculate the relationship between the input energy and the output energy of the plant is, for example, the amount of generated steam in a steam turbine ship and the amount of power generation in a ship equipped with a DF engine. In the present embodiment, description will be made mainly for a steam turbine ship.

  The fuel consumption acquisition device 1 is a general-purpose computer such as dedicated hardware using a semiconductor circuit or a microcomputer, or a virtual server constructed on a PC (Personal Computer), a server device, or a cloud computing service, for example. Or a combination thereof. In this embodiment, a case in which a computer is used will be described as an example. That is, a CPU (Central Processing Unit) (not shown) runs on a middleware such as an OS (Operating System) or a DBMS (DataBase Management System) developed on a memory from a recording device such as an HDD (Hard Disk Drive) or the like. By executing the software, various functions to be described later relating to the calculation of the FOE for each fuel type and the calculation of the total fuel consumption are realized.

  The fuel consumption acquisition device 1 includes, for example, each unit such as an operation data acquisition unit 11, a conversion coefficient calculation unit 12, a fuel consumption calculation unit 13, and an operation condition determination unit 14 implemented as software. Moreover, it has the operation data 15 recorded on recording media, such as HDD and memory as a database, a table, etc., and each data (recording part), such as FO conversion coefficient 16.

  The operation data acquisition unit 11 can grasp the operation status in the LNG ship in which the fuel consumption acquisition device 1 is installed, an external system such as an operation management system and an operation control system (not shown), and various types installed in the LNG ship. It has a function of acquiring data relating to the operation status from other sensors, measuring instruments, etc., and recording / accumulating it as operation data 15. Data related to operational status shall be obtained at all times (more accurately, periodically at short intervals such as seconds or minutes). In addition, in the operation data 15, in addition to the data related to the current operation status, data related to the past operation status is also accumulated, and the data included in the corresponding range is referred to as appropriate by specifying the date and time range. It is possible.

  The conversion coefficient calculation unit 12 calculates a conversion coefficient (FOE) for each fuel type at the past time point based on data relating to the past operation status recorded in the operation data 15, and master information And has a function of recording as an FO conversion coefficient 16. For example, in the present embodiment, since a steam turbine ship is a target, information on the amount of generated steam that is output and information on the mixing ratio of NBOG and FBOG in the consumed BOG that is input is used as data related to the operation status. The FOE for each fuel type is calculated based on the obtained information.

  The fuel consumption calculation unit 13 has a function of calculating and outputting the current overall combustion consumption converted to FO based on the data relating to the current operation status recorded in the operation data 15 by a method described later. Have. The FOE used at this time acquires and uses the value of the FOE related to the corresponding fuel type from the FO conversion coefficient 16 calculated for each fuel type by the conversion coefficient calculation unit 12.

  The operation condition determination unit 14 has a function of determining operation conditions at the time when the data related to the operation state is input and the data is acquired. For example, based on the liquid level measurement information in the tank containing LNG, it is determined whether it is a cargo voyage (Laden) voyage or an empty cargo (Ballast) voyage. In addition, the mixing ratio of each fuel type is acquired based on the information on the fuel amount (fuel input amount) for each fuel type measured by a flow meter (not shown), and the combination pattern of the fuel types used is determined. . In general operation of an LNG ship, for example, a pattern of FO only, NBOG only, and NBOG + FBOG is used. Note that when FBOG is used, NBOG is inevitably generated, so there is no pattern of FBOG alone.

<Calculation method of FO conversion coefficient>
FIG. 2 is a diagram showing an outline of an example of the relationship between the pattern of the fuel type used in the LNG ship and the input / output energy. In the example of FIG. 2, an example of the relationship between input energy (fuel amount) and output energy (generated steam amount) is shown in a graph for each pattern of the fuel type to be used. As shown in the figure, the relationship between the amount of fuel and the amount of generated steam is generally proportional, and the slope of the NBOG-only pattern is greater than that of the FO-only pattern. In the NBOG + FBOG pattern, the inclination is further increased. A larger slope indicates that higher output energy (amount of generated steam) can be obtained with the same input energy (amount of fuel), and the efficiency is higher. In the present embodiment, as will be described later, the FO conversion coefficient for each fuel type is obtained based on the ratio between the inclination for each fuel type with reference to the inclination in the pattern of only FO.

  FIG. 3 is a flowchart showing an outline of an example of the flow of processing for calculating the FO conversion coefficient in the present embodiment. First, the conversion coefficient calculation unit 12 acquires data related to past operation status from the operation data 15 (S01). For example, the operation status data may be acquired at a certain point in time in the past, or the data is continuously acquired until it is determined that the operation status has changed due to the determination of the operation conditions described below. You may make it acquire as statistical information, such as an average.

  Thereafter, based on the acquired data relating to the operation status, the operation condition determination unit 14 determines the operation condition (S02). Here, as described above, it is determined whether the cruise is laden or empty, and the combination pattern of each fuel type in the input fuel is either FO only, NBOG only, or NBOG + FBOG. It is determined whether it is.

Thereafter, the conversion coefficient calculation unit 12 obtains the fuel amount F that is an input to the boiler for each fuel type and the generated steam amount S that is the entire output from the data relating to the operation status (S03). Here, the fuel amount F and the generated steam amount S correspond to the pattern of the combination of fuel types. For example, in the case of FO only (hereinafter sometimes referred to as “pattern 0”), the fuel amount F _{0 of} FO. and acquires the generated steam amount _{S 0} (S03_0).

Similarly, in the case of NBOG only in a load (Laden) voyage (hereinafter sometimes referred to as “Pattern 1”), the fuel amount F ₁ and the generated steam amount S _{1 of} NBOG, in the case of NBOG + FBOG in a load (Laden) voyage (Hereinafter may be referred to as “pattern 2”) obtains the fuel amount F ₁ of NBOG, the fuel amount F _{2 of} FBOG, and the total generated steam amount S ₂ (S03_1, ₂ ). Similarly, in the case of NBOG only in the case of an empty load (Ballast) voyage (hereinafter sometimes referred to as “Pattern 3”), the fuel amount F ₃ and the generated steam amount S ₃ of the NBOG, and the NBOG + FBOG in an empty load (Ballast) voyage In this case (hereinafter may be referred to as “pattern 4”), the fuel amount F ₃ of NBOG, the fuel amount F _{4 of} FBOG, and the total generated steam amount S ₄ are acquired (S03_3, ₄ ).

Thereafter, the proportionality coefficient A between the fuel amount F and the generated steam amount S for each fuel type is calculated according to the patterns 0 to 4 (S04). For example, if the proportional coefficient related to FO in pattern 0 is A ₀ , the FO fuel amount F ₀ (t ₀ ) and the generated steam amount S ₀ (t ₀ ) at a certain time t ₀ are
S ₀ (t ₀ ) = A ₀ × F ₀ (t ₀ )
The following formula is established. Therefore,
A ₀ = S ₀ (t ₀ ) / F ₀ (t ₀ )
A ₀ can be calculated by the following equation (S04_0). Similarly, when the proportional coefficient in accordance with NBOG to _{A 1} in the pattern 1, between the fuel quantity _F 1 of NBOG at a certain time _{t 1 (t 1)} and the generated steam amount _S 1 _{(t 1)} is
S ₁ (t ₁ ) = A ₁ × F ₁ (t ₁ )
The formula of
A ₁ = S ₁ (t ₁ ) / F ₁ (t ₁ )
It can be calculated _{A 1} by the formula (S04_1).

On the other hand, if the proportional coefficient of the FBOG in the pattern 2, _{A 2,} NBOG fuel amount _F 1 at a certain point in time _{t 2 (t 2)} and FBOG fuel quantity _F 2 _{(t 2)} and the generated steam amount _S 2 (t between _2), as has already been calculated _{a 1} in step S04_1,
S ₂ (t ₂ ) = A ₁ × F ₁ (t ₂ ) + A ₂ × F ₂ (t ₂ )
The following formula is established. Therefore,
A ₂ = {S ₂ (t ₂ ) −A ₁ × F ₁ (t ₂ )} / F ₂ (t ₂ )
A ₂ can be calculated by the equation (S04_2).

Similarly to the above steps S03_1,2, when the proportionality coefficient according to NBOG and _{A 3} in the pattern 3, NBOG fuel amount _F 3 of at a certain point in time _{t 3 (t 3)} and the generated amount of steam _S 3 _{(t 3} )
S ₃ (t ₃ ) = A ₃ × F ₃ (t ₃ )
The formula of
A ₃ = S ₃ (t ₃ ) / F ₃ (t ₃ )
A3 can be calculated by the equation (S04_3).

Also, if _{A 4} the proportionality coefficient according to FBOG in the pattern 4, the amount of fuel NBOG at a certain point in time _{t 4 F} 3 _{(t 4)} and the fuel amount _F 4 _{(t 4)} of FBOG the generation amount of steam _S 4 (t between _4), as has already been calculated _{a 3} in step S04_3,
S ₄ (t ₄ ) = A ₃ × F ₃ (t ₄ ) + A ₄ × F ₄ (t ₄ )
The following formula is established. Therefore,
A ₄ = {S ₄ (t ₄ ) −A ₃ × F ₃ (t ₄ )} / F ₄ (t ₄ )
It can be calculated _{A 4} by the equation (S04_4).

Then, depending on the pattern of the pattern 1-4, with reference to the proportional coefficient _{A 0} according to the FO, to calculate the conversion factor FOE to FO for each fuel type (S05). For example, the conversion factor FOE ₁ of NBOG to FO in the load (Laden) voyage in Pattern ₁ is
FOE ₁ = A ₁ / A ₀
(S05_1). Similarly, conversion factor FOE ₂ for FBOG to FO on Laden voyage, conversion factor FOE ₃ to FO for NBOG on Ballast voyage, and FO of FOOG on Ballast voyage The conversion factor FOE ₄ to
FOE ₂ = A ₂ / A ₀
FOE ₃ = A ₃ / A ₀
FOE ₄ = A ₄ / A ₀
(S05_2 to 4). In general, FOE> 1 is established.

  Thereafter, the calculated FOE value is recorded as the FO conversion coefficient 16 (S06). By executing the above-described series of processing periodically (for example, once a day) using information related to the latest operation status in the past and updating the FOE value as needed, the overall fuel consumption amount to be described later The accuracy of the calculation can be improved.

<Method of calculating fuel consumption>
FIG. 4 is a flowchart showing an outline of an example of a flow of calculation processing of fuel consumption during operation in the present embodiment. First, the fuel consumption calculation unit 13 acquires data (current time or latest data) related to the current operation status from the operation data 15 (S11). Then, based on the acquired data relating to the operation status, the operation condition determination unit 14 determines the operation condition (S12). In this case, it is determined whether the cruise is laden or empty.

Thereafter, the fuel consumption amount calculation unit 13 acquires the fuel amount F as an input for each fuel type (here, FO, NBOG, and FBOG) from the data relating to the operation status (S13). That is, in the case of a laden voyage, the FO fuel amount F ₀ , the NBOG fuel amount F ₁ , and the FBOG fuel amount F ₃ are acquired. Further, in the case of an empty cargo (Ballast) voyage, an FO fuel amount F ₀ , an NBOG fuel amount F ₃ , and an FBOG fuel amount F ₄ are acquired.

Thereafter, a conversion coefficient FOE to FO for each fuel type is acquired from the FO conversion coefficient 16 (S14). That is, in the case of a load (Laden) voyage, a conversion coefficient FOE ₁ for converting NBOG to FO and a conversion coefficient FOE ₂ for converting FBOG to FO are acquired. Further, in the case of an empty cargo (Ballast) voyage, a conversion coefficient FOE ₃ for converting NBOG to FO and a conversion coefficient FOE ₄ for converting FBOG to FO are acquired.

Then, the total fuel consumption is calculated based on the fuel amount F for each fuel type and the conversion coefficient FOE (S15). In other words, in the case of Laden voyage, the total fuel consumption Total FOC (Fuel Oil Consumption) is
Total FOC = F ₀ + (F ₁ × FOE ₁ ) + (F ₂ × FOE ₂ )
Calculate using the following formula. Similarly, for a Ballast voyage,
Total FOC = F ₀ + (F ₃ × FOE ₃ ) + (F ₄ × FOE ₄ )
Calculate using the following formula.

  By executing the above series of processing periodically (for example, at intervals of several seconds), it is possible to accurately grasp the current transition of the entire fuel consumption in real time. The calculated fuel consumption value may be output as data or displayed on a display (not shown).

  As described above, according to the fuel consumption acquisition device 1 according to an embodiment of the present invention, the data such as the generated steam amount S that can convert or calculate the relationship between the input energy and the output energy of the plant, Based on the mixture ratio of NBOG and FBOG in the consumed BOG, the FOE for each fuel type at the time when the target data is acquired is calculated. Then, using the fuel amount for each fuel type and the FOE, the total fuel consumption converted to FO is calculated. Thereby, the accuracy in grasping the performance of a ship such as an LNG ship and thus in creating an operation plan can be improved.

  As mentioned above, the invention made by the present inventor has been specifically described based on the embodiments. However, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the invention. Needless to say. For example, the above-described embodiment has been described in detail for easy understanding of the present invention, and is not necessarily limited to the one having all the configurations described. In addition, it is possible to add, delete, and replace other configurations for a part of the configuration of the above-described embodiment.

  For example, in the above embodiment, as shown in the example of FIG. 3, the FOE for each fuel type is calculated using data related to the past operation status. Instead of the data relating to the situation, the FOE for each fuel type may be calculated and estimated based on design data at the time of construction of the plant such as the target ship. For example, the relationship between the design data of the plant and the FOE for each fuel type is set in advance based on past results, and the FOE value for each fuel type is determined from the design data of the plant such as the target ship by referring to this. Can be obtained.

  In addition, if the target plant such as an LNG ship is equipped with a calorimeter and a gas composition meter and can measure the amount of fuel for each fuel type, based on the measured value, each fuel type is calculated based on a predetermined calculation formula. It is also possible to adopt a configuration (online FOE) for calculating the FOE in real time. In addition, when information such as the composition of each fuel type can be estimated by a predetermined simulator instead of the actual measurement value by the calorimeter or the gas composition meter, the FOE for each fuel type is based on the estimated value. It is also possible to adopt a configuration for calculating the value in real time. Also in these cases, for example, the relationship between the information such as the composition for each fuel type and the FOE is set in advance based on the past results and the like, and the composition for each fuel type measured or estimated by referring to this is referred to. The FOE value for each fuel type can be obtained from the above information.

Also, a reference in the calculation of the FOE of each fuel type, the proportionality factor between the fuel amount F ₀ and the generated steam amount S ₀ of FO, as shown in the example of FIG. 3, in the past the flight status instead of using the a ₀ calculated based on the data relating, at FO used in standard conditions (hereinafter may be referred to as "standard FO") so as to use a proportional constant B ₀ calculated based on the data of the It may be. Here, the standard condition means that various conditions such as FO composition and specific gravity, fuel temperature, number of burner operations in the boiler, boiler water temperature, steam pressure, and the like are predetermined values. By using B ₀ as the reference proportionality coefficient, the conversion coefficient FOE ₀ for the standard FO can be calculated for the currently used FO, and the overall fuel consumption can be calculated with higher accuracy. It becomes.

In addition, when periodically calculating the FOE for each fuel type, the trend of the transition of the values of FOE ₁ to FOE ₄ is observed, and for example, deviated by more than a predetermined threshold from the average value in the past fixed time range. By determining whether there is an abnormal change such as a value, a function of detecting a change in fuel properties, a plant abnormality, or the like may be provided.

  Each of the above-described configurations, functions, processing units, processing means, and the like may be realized in hardware by designing a part or all of them, for example, with an integrated circuit. Each of the above-described configurations, functions, and the like may be realized by software by interpreting and executing a program that realizes each function by the processor. Information such as programs, tables, and files for realizing each function can be stored in a recording device such as a memory, a hard disk, or an SSD (Solid State Drive), or a recording medium such as an IC card, an SD card, or a DVD.

  Moreover, in each said figure, the control line and the information line have shown what is considered necessary for description, and do not necessarily show all the control lines and information lines on mounting. Actually, it may be considered that almost all the components are connected to each other.

  The present invention is applicable to a plant fuel consumption acquisition device, a fuel consumption acquisition method, and a fuel consumption acquisition program that can use fuel other than FO.

1 ... Fuel consumption acquisition device,
DESCRIPTION OF SYMBOLS 11 ... Flight data acquisition part, 12 ... Conversion coefficient calculation part, 13 ... Fuel consumption calculation part, 14 ... Flight condition determination part, 15 ... Flight data, 16 ... FO conversion coefficient

Claims (10)

A fuel consumption acquisition device for calculating fuel consumption in a ship,
A conversion factor for converting the fuel consumption of the second fuel type into the fuel consumption of the first fuel type for each of the other second fuel types with respect to the reference first fuel type. A conversion factor calculation unit that calculates and records in the conversion factor recording unit according to the loading state of the cargo,
An operation data acquisition unit for acquiring operation data measured for the ship;
Recorded in the cargo loading state determined from the latest operation data acquired by the operation data acquisition unit, the fuel consumption for each of the first fuel type and the second fuel type, and the conversion coefficient recording unit And converting the fuel consumption amount for each second fuel type into the fuel consumption amount for the first fuel type based on the conversion factor for each second fuel type, A fuel consumption acquisition device, comprising: a fuel consumption calculation unit that calculates an overall fuel consumption. The fuel consumption acquisition device according to claim 1,
The conversion coefficient calculation unit is configured to calculate a first proportionality coefficient between the fuel consumption amount and the output energy of the first fuel type based on the ship operation data, and each of the second fuel types. A second proportionality factor between the fuel consumption amount and the output energy is obtained, and based on the ratio between the first proportionality factor and each of the second proportionality factors, the second proportionality factor A fuel consumption acquisition device that calculates a conversion coefficient. The fuel consumption acquisition device according to claim 2,
The fuel consumption acquisition device, wherein the ship operation data referred to by the conversion coefficient calculation unit is past operation data acquired and accumulated by the operation data acquisition unit. The fuel consumption acquisition device according to claim 2,
The fuel consumption acquisition device, wherein the ship operation data referred to by the conversion coefficient calculation unit is operation data when the ship is operated under a predetermined standard condition. The fuel consumption acquisition device according to claim 1,
The conversion coefficient calculation unit holds in advance information related to the correspondence between the input / output energy in the ship and the conversion coefficient for each of the second fuel types, and is measured by a sensor in the ship. A fuel consumption acquisition device that acquires the conversion coefficient for each of the second fuel types based on information relating to input output energy. The fuel consumption acquisition device according to claim 1,
The conversion coefficient calculation unit holds in advance information related to the correspondence between the input / output energy in the ship and the conversion coefficient for each second fuel type, and the input estimated by a predetermined simulation calculation. A fuel consumption acquisition device that acquires the conversion factor for each of the second fuel types based on information relating to output energy. The fuel consumption acquisition device according to claim 1,
The conversion factor calculation unit periodically calculates the conversion factor for each of the second fuel types, and updates the content recorded in the conversion factor recording unit with the calculated conversion factor. Acquisition device. The fuel consumption acquisition device according to claim 7,
A fuel consumption that outputs a warning regarding the occurrence of an abnormality in the ship when the conversion coefficient calculated by the conversion coefficient calculation unit deviates by more than a predetermined degree from the transition of the value of the conversion coefficient in the past. Quantity acquisition device. A fuel consumption acquisition method in a fuel consumption acquisition device for calculating fuel consumption in a ship,
The fuel consumption acquisition device comprises:
A conversion factor for converting the fuel consumption of the second fuel type into the fuel consumption of the first fuel type for each of the other second fuel types with respect to the reference first fuel type. A conversion factor calculation step for calculating and recording in the conversion factor recording unit according to the loading state of the cargo,
An operation data acquisition step of acquiring operation data measured for the ship;
Recorded in the cargo loading state determined from the latest operation data acquired in the operation data acquisition step, the fuel consumption for each of the first fuel type and the second fuel type, and the conversion coefficient recording unit And converting the fuel consumption amount for each second fuel type into the fuel consumption amount for the first fuel type based on the conversion factor for each second fuel type, A fuel consumption acquisition method for executing a fuel consumption calculation step for calculating an overall fuel consumption. A fuel consumption acquisition program for causing a computer to function as a fuel consumption acquisition device for calculating fuel consumption in a ship,
A conversion factor for converting the fuel consumption of the second fuel type into the fuel consumption of the first fuel type for each of the other second fuel types with respect to the reference first fuel type. A conversion coefficient calculation process for calculating and recording in the conversion coefficient recording unit according to the loading state of the cargo,
Operation data acquisition processing for acquiring operation data measured for the ship;
Recorded in the cargo loading state determined from the latest operation data acquired in the operation data acquisition process, the fuel consumption for each of the first fuel type and the second fuel type, and the conversion coefficient recording unit And converting the fuel consumption amount for each second fuel type into the fuel consumption amount for the first fuel type based on the conversion factor for each second fuel type, A fuel consumption acquisition program for causing the computer to execute a fuel consumption calculation process for calculating an overall fuel consumption.

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