JP5308842B2 - Calorimetry method and calorimeter - Google Patents

Description

  The present invention relates to a calorimetric method and a calorimeter.

  Conventionally, as a calorimeter for measuring the calorific value of a gas, a calorimeter having a configuration for obtaining a calorific value based on the thermal conductivity of a calorimetric gas (hereinafter also referred to as “measured gas”), A structure that obtains the amount of heat based on the density or a structure that obtains the amount of heat based on the refractive index of the gas to be measured is used (for example, see Patent Documents 1 to 3).

In the calorimeter with such a configuration, the amount of heat of the paraffinic hydrocarbon gas as the gas to be measured is proportional to the refractive index and density, and is also inversely proportional to the thermal conductivity. The amount of heat is measured.
Thus, according to such a calorimeter, the gas to be measured is only a paraffinic hydrocarbon gas such as a city gas composed of a mixed gas of LNG (liquefied natural gas) and LPG (liquefied petroleum gas), for example. In the case where it is constituted, high reliability is obtained in the calorific value of the gas to be measured.

  However, when the gas to be measured is, for example, natural gas or biogas just produced from a gas field, the natural gas or biogas includes, for example, carbon dioxide gas or monoxide along with paraffinic hydrocarbon gas. It contains a lot of gas other than paraffinic hydrocarbon gas such as carbon gas, nitrogen gas and oxygen gas (hereinafter also referred to as “miscellaneous gas”), and the calorific value of these miscellaneous gases depends on its refractive index, density and Since it does not have a proportional relationship or an inverse proportional relationship with thermal conductivity or the like, there is a problem that a measurement error occurs due to the inclusion of miscellaneous gas.

Japanese Patent Application No. 2-257046 Japanese Patent Application No. 10-38827 Japanese Patent Application No. 8-320300

  The present invention has been made based on the above circumstances, and its purpose is to measure the calorific value of the calorimetric gas with high reliability even if the calorimetric gas is natural gas or biogas. An object of the present invention is to provide a calorimetric method and a calorimetric apparatus that can be used.

The calorimetric method of the present invention is a calorimetric method for measuring the calorific value of a gas,
The calorimetric gas is composed mainly of paraffinic hydrocarbon gas and contains at least one of carbon dioxide gas, carbon monoxide gas, nitrogen gas and oxygen gas. On the basis of the thermal conductivity converted heat quantity A [MJ / Nm ³ ] obtained from the rate and the refractive index converted heat quantity B [MJ / Nm ³ ] obtained from the refractive index of the calorimetric gas, the following formula (1 ), The calorific value Q [MJ / Nm ³ ] of the calorimetric measurement target gas is calculated under the condition of 2.91 ≦ correction coefficient α ≦ 3.75.

The calorimetric method of the present invention is a calorimetric method for measuring the calorific value of a gas,
The calorimetric gas is natural gas or biogas,
Based on the thermal conductivity converted heat quantity A [MJ / Nm ³ ] obtained from the thermal conductivity of the calorimetric gas and the refractive index converted heat quantity B [MJ / Nm ³ ] obtained from the refractive index of the calorimetric gas. The calorific value Q [MJ / Nm ³ ] of the calorimetric measurement target gas is calculated by the above formula (1) under the condition of 2.91 ≦ correction coefficient α ≦ 3.75 .

In the calorimetric method of the present invention, it is preferable that the value of the correction coefficient α is 2.96 to 3.15 in the equation (1).

In the calorimeter of the present invention, a heat conductivity-converted calorie measuring mechanism for measuring the heat conductivity-converted calorie of the calorimetric gas, and a refractive index for measuring the refractive index-converted calorie of the calorimeter gas With a calorific value measuring mechanism,
The calorific value of the calorimetric gas is calculated by the calorimetric method described above.

  According to the calorimetric method of the present invention, the calorific value of the calorimetric target gas is calculated by a specific calculation formula based on the thermal conductivity converted calorific value and the refractive index converted calorific value of the calorimetric target gas. A paraffinic hydrocarbon whose heat quantity, heat conductivity and refractive index have a specific correspondence with gas, and whose heat quantity does not have a specific correspondence with heat conductivity and refractive index. Even if miscellaneous gas other than gas is contained, the measurement error that occurs in the heat conductivity converted calorific value and the refractive index converted calorific value due to the inclusion of this miscellaneous gas is related to the heat conductivity converted calorific value. And the refractive index-converted heat quantity is corrected based on the relationship. Therefore, even if the calorimetric gas is a natural gas or biogas containing paraffinic hydrocarbon gas and miscellaneous gas whose calorific value does not have a specific correspondence with thermal conductivity and refractive index, Since the error that occurs in the amount of heat finally obtained due to the inclusion of the miscellaneous gas can be reduced, the amount of heat of the gas for measuring the amount of heat can be measured with high reliability.

  According to the calorimeter of the present invention, it is provided with a heat conductivity-converted calorimeter and a refractive index-converted calorimeter, and measured by the heat conductivity-converted calorimeter by the calorimetric method of the present invention. Since the heat quantity of the calorimetric gas is calculated based on the heat conductivity calorie and the refractive index calorie measured by the refractive index calorie measuring mechanism, the calorimetric gas is a paraffinic hydrocarbon. Even with natural gas or biogas that contains a gas and other gases that do not have a specific correspondence with thermal conductivity and refractive index, the calorific value of the gas to be measured can be reliably measured. Can be measured.

It is explanatory drawing which shows an example of a structure of the calorie | heat amount measuring apparatus of this invention. It is explanatory drawing which shows an example of a structure of the apparatus used as a refractive index conversion calorie | heat amount measuring mechanism which comprises the calorimeter of FIG. It is explanatory drawing which shows the outline | summary of the system for enforcing the calorie | heat amount measuring method of this invention. It is a graph which shows the relationship between the carbon dioxide gas density | concentration in the sample gas obtained in Experimental example 1, and the measurement error produced in the refractive index conversion calorie | heat amount.

Hereinafter, embodiments of the present invention will be described in detail.
FIG. 1 is an explanatory diagram showing an example of the configuration of the calorimeter of the present invention.
The calorimeter 10 is used, for example, for measuring the calorie of gas flowing in the gas pipeline 12 in the direction of the arrow in FIG.
The calorimeter 10 includes a thermal conductivity-converted calorie measuring mechanism 21 for measuring a thermal conductivity-converted calorie A obtained from the thermal conductivity of a gas to be measured (a calorimetric gas), and a refractive index of the gas to be measured. And a refractive index-converted calorimeter measuring mechanism 23 for measuring a refractive index-converted calorie B obtained from the thermal conductivity-converted calorie A obtained by the thermal conductivity-converted calorimeter 21 and a refractive index-converted calorimeter. A calculation mechanism 25 is provided for calculating the heat quantity Q of the gas to be measured based on the refractive index converted heat quantity B obtained in the mechanism 23.
The calorific value Q of the measured gas calculated by the calculation mechanism 25 is transmitted to the display unit 27 through the data transmission path 28, and the calorific value Q of the measured gas is displayed on the display unit 27. The Rukoto.
In FIG. 1, 16A, 16B, and 16C are gas flow paths for supplying the gas flowing through the gas pipeline 12 to each of the heat conductivity converted calorimeter 21 and the refractive index converted calorimeter 23 as the gas to be measured. It is. Reference numeral 22 denotes a data transmission path for transmitting the heat conductivity converted heat quantity A data obtained in the heat conductivity converted heat quantity measuring mechanism 21 to the calculation mechanism 25, and 24 denotes a refractive index converted heat quantity measuring mechanism 23. 2 is a data transmission path for transmitting data of the refractive index converted heat quantity B obtained in 1 to the calculation mechanism 25.

In the calorimeter 10 having such a configuration, the calorific value Q of the gas to be measured is calculated by the calculation mechanism 25 by the calorie measurement method of the present invention (hereinafter also referred to as “specific calorie measurement method”).
That is, according to the specific calorimetric method, the calorie Q of the gas to be measured is 2.91 ≦ correction coefficient α according to the above equation (1) based on the thermal conductivity converted heat A and the refractive index converted heat B. It is calculated under the condition of ≦ 3.75.
Here, in the equation (1), the unit of the calorific value Q of the measured gas to be calculated and the value of the thermal conductivity converted heat quantity A and the refractive index converted heat quantity B used for the calculation is [MJ / Nm ³ ]. It is.

In the formula (1), the correction coefficient α is 2.91 or more and 3.75 or less, but is particularly preferably 2.96 to 3.15.
When the correction coefficient α is too small, the measurement error generated in the heat conductivity converted heat quantity A and the refractive index converted heat quantity B cannot be sufficiently corrected, and the heat quantity of the gas to be measured finally obtained is An error due to the inclusion of miscellaneous gas occurs. On the other hand, when the correction coefficient α is excessive, the measurement error generated in the heat conductivity-converted heat amount A and the refractive index-converted heat amount B is excessively corrected without being appropriately corrected, and thus finally obtained. A large error occurs in the amount of heat of the gas to be measured.

  In addition, when the correction coefficient α is 2.96 to 3.15, the heat quantity Q to be obtained is more reliable, particularly in the measurement gas made of natural gas or biogas immediately after being produced from the gas field. Can be obtained.

This correction coefficient α is a value based on the difference in magnitude of measurement errors that occur in the thermal conductivity converted calorimeter 21 and the refractive index converted calorimeter 23 due to the presence of miscellaneous gas in the gas to be measured, That is, it is the value of the ratio of the measurement error that occurs in the heat conductivity-converted heat quantity A to the measurement error that occurs in the refractive index-converted heat quantity B, and is therefore preferably a suitable value corresponding to the composition of the gas to be measured.
Specifically, as will be apparent from Experimental Example 1 described later, for example, when the miscellaneous gas is only oxygen gas, the correction coefficient α is preferably 3.75, and the miscellaneous gas is only nitrogen gas. In this case, the correction coefficient α is preferably 3.60, and when the miscellaneous gas is only carbon dioxide gas, the correction coefficient α is preferably 2.91.

  As the calculation mechanism 25, for example, a personal computer, a recorder with a calculation function, or the like can be used.

  As the thermal conductivity calculation calorimeter 21 for obtaining the thermal conductivity converted calorie A, for example, a conventionally known thermal conductivity calorimeter can be used.

  As the refractive index converted calorific value measuring mechanism 23 for obtaining the refractive index converted heat quantity B, for example, a difference in refractive index of light between a gas to be measured and a standard gas such as air is detected as a displacement of the interference fringe. An apparatus (refractive index type calorimeter) configured to measure the refractive index converted heat quantity B of the gas to be measured based on the displacement amount of the gas can be used.

  As a specific example of the apparatus constituting the refractive index conversion calorie measuring mechanism 23, as shown in FIG. 2, a measurement target gas cell unit 32 for introducing a gas to be measured and a standard gas such as air are used. A chamber 31 in which standard gas cell portions 33 and 34 for filling are partitioned, a parallel plane mirror 36 that divides the light from the light source 35, and light that has been split by the parallel plane mirror 36 and that has passed through the chamber 31 is reflected. By changing the traveling direction of the prism 41 and passing through the chamber 31 again, it is superimposed on the parallel plane mirror 36 to generate interference fringes, and the prism 41 arranged and adjusted on the parallel plane mirror 36. And an interference fringe detecting means 37 for receiving the combined light (interference light) superimposed on each other. In FIG. 2, 39 is a plane mirror that reflects the combined light, and 42 is a condensing lens for condensing the combined light, and an interference fringe detecting means 37 is disposed at the focal position of the condensing lens 42. Further, a one-dot chain line arrow indicates a path until the light from the light source 35 is received by the interference fringe detector 37.

  In the calorimeter 10 having such a configuration, during the measurement operation, the gas flowing through the gas pipeline 12 through the gas flow paths 16A, 16B, and 16C serves as the gas to be measured, and the heat conductivity conversion calorimeter 21. In addition, the thermal conductivity-converted calorimeter 21 measures the thermal conductivity-converted calorie A, while the refractive index-converted calorimeter 23 is refracted. The rate conversion heat quantity B is measured. These measured values are transmitted to the calculation mechanism 25 via the data transmission paths 22 and 24, respectively. In the calculation mechanism 25, the heat quantity based on the heat conductivity converted heat quantity A and the refractive index converted heat quantity B. Q is calculated. The amount of heat Q thus obtained is transmitted to the display unit 27 via the data transmission path 28 and displayed on the display unit 27.

The calorimeter 10 as described above uses a gas whose calorie is inversely proportional to the thermal conductivity and proportional to the refractive index, that is, a gas whose main component is a paraffinic hydrocarbon gas. It is.
Specifically, the gas to be measured includes a gas containing only paraffinic hydrocarbon gas and a main component made of paraffinic hydrocarbon gas, and other components such as carbon dioxide gas, carbon monoxide gas, nitrogen gas and It contains at least one oxygen gas as miscellaneous gas.

  Specific examples of the gas to be measured include natural gas, biogas, and the like, and also include coal gas, gas generated in the iron making process, gas generated in the coal mine, and the like. Here, as an example of coal gas, for example, methane gas 27 volume%, CnHm (where n is an integer of 2 or more, m represents an integer) gas 2 volume%, carbon monoxide gas 6 volume%, hydrogen gas 56 Examples include a gas containing volume%, carbon dioxide gas 3 volume%, oxygen gas volume 1%, and nitrogen gas 5 volume%. Moreover, as an example of the gas generated in the iron making process, for example, CpHq (p and q each represent an integer) gas 0.3 volume%, carbon monoxide gas 28 volume%, hydrogen gas 2.7 volume% , A gas containing 0.05% by volume of carbon dioxide gas and 58.5% by volume of nitrogen gas. Moreover, as an example of the gas generated in the coal mine, for example, a gas containing 52.4% by volume of methane gas, 4.6% by volume of carbon dioxide gas, 7% by volume of oxygen gas, and 36% by volume of nitrogen gas can be given.

  However, the calorimeter 10 is obtained by the thermal conductivity converted calorie A obtained by the thermal conductivity converted calorimeter 21 and the refractive index converted calorimeter 23 by a specific calorific measurement method in the calculation mechanism 25. Since the calorific value Q of the gas to be measured is calculated by the equation (1) based on the refractive index conversion calorie B, the gas to be measured has its calorific value, thermal conductivity and refractive index. Is a paraffinic hydrocarbon gas with a specific correspondence (specifically, thermal conductivity is inversely proportional and refractive index is proportional), and the amount of heat is the thermal conductivity and refractive index as the other components. Even if a miscellaneous gas not having a specific correspondence relationship is included, the heat conductivity conversion calorimeter 21 and the refractive index conversion calorimeter 23 are accompanied by the inclusion of the miscellaneous gas. Arise in The measurement error is corrected using the relationship of the magnitude difference (error ratio) between the measurement error related to the thermal conductivity-converted calorimeter 21 and the measurement error related to the refractive index-converted calorimeter 23. . In this specific calorimetry method, by using an appropriate correction coefficient α corresponding to the composition of the gas to be measured (composition of miscellaneous gas) in the equation (1) for calculating the calorie Q of the gas to be measured, it is even more Appropriate correction can be made.

Therefore, according to the calorimeter 10, the gas to be measured contains a large amount of miscellaneous gas whose amount of heat does not have a specific correspondence with the thermal conductivity and refractive index, along with the paraffinic hydrocarbon gas. Even in the case of natural gas or biogas immediately after being produced from a gas field, it is possible to reduce errors that occur in the amount of heat finally obtained due to the inclusion of miscellaneous gas. The amount of heat Q of the measurement gas can be measured with high reliability.
In addition, the calorimeter 10 can measure the calorie with high reliability even when the gas to be measured is made of only a paraffinic hydrocarbon gas such as a city gas made of a mixed gas of LNG and LPG. Measurements can be made.

  Furthermore, according to the calorific value measuring apparatus 10, even if the kind and concentration of miscellaneous gas in the gas to be measured change greatly due to various circumstances such as environmental conditions and supply gas supply switching in the gas pipeline 12, the change is observed. It can correspond to.

Although the calorific measurement method and calorimeter of the present invention have been specifically described above, the present invention is not limited to the above examples, and various modifications can be made.
For example, the calorimetric method is not limited to being implemented by an apparatus that includes a thermal conductivity-converted calorimeter, a refractive index-converted calorimeter, and a calculation mechanism, and the thermal conductivity-converted calorie A and refractive index. If the calorific value of the gas under measurement is calculated under the condition of 2.91 ≦ correction coefficient α ≦ 3.75 based on the converted calorific value B, as shown in FIG. 3, for example, as shown in FIG. The devices for obtaining the values of heat conductivity converted heat quantity A and refractive index converted heat quantity B are not integrated and may be individual, and a method for calculating the gas to be measured is automatically calculated by an arithmetic unit or the like. Or a manual calculation.
In FIG. 3, reference numeral 51 denotes a supply gas for adjusting gas (for example, butane gas-rich LPG) to the gas pipeline 12 based on the measured calorific value of the measured gas (for example, raw material gas such as natural gas). An adjustment gas supply line 52 is a thermal conductivity meter for confirming that a desired adjustment has been made by supplying the adjustment gas to the measurement gas (source gas), and 53 is a measurement gas. This is a mixing tank for mixing (raw material gas) and adjusting gas to obtain a production gas.

  Hereinafter, experimental examples of the present invention will be described.

[Experimental Example 1]
Oxygen gas, nitrogen gas, and carbon dioxide gas are used as sample gases, and each of the sample gases is measured by a thermal conductivity calorimeter and a refractive index calorimeter, and a measured value of the thermal conductivity calorimeter (hereinafter, “ Calculated as the ratio (thermal conductivity meter value / refractometer value) between the measured value of the refractive index calorimeter (hereinafter also referred to as “refractometer value”) did. The results are shown in Table 1 below.
Here, the “thermal conductivity meter value” and the “refractive index meter value” are respectively a thermal conductivity calorimeter and a refractive index calorimeter when the sample gas is contained in a paraffinic hydrocarbon gas. Is a measurement error value per 1% by volume of the sample gas that can occur in each of the above.

  From the results of Table 1 above, in any sample gas of oxygen gas, nitrogen gas, and carbon dioxide gas, the thermal conductivity meter value is larger than the refractometer value, and the heat with respect to the refractometer value is larger. It was confirmed that the ratio of conductivity meter values showed a specific value depending on the type of sample gas.

Moreover, the measurement error which arises when measuring the paraffinic hydrocarbon gas containing miscellaneous gas using the heat conductivity type calorimeter and the refractive index type calorimeter was confirmed.
Here, an experimental example in the case of actually measuring the calorific value of paraffinic hydrocarbon gas containing carbon dioxide gas as miscellaneous gas using a thermal conductivity calorimeter will be specifically described.
In this experimental example, only one type of carbon dioxide gas is included as a miscellaneous gas, and a plurality of types of paraffinic hydrocarbon gases having different carbon dioxide gas concentrations are used as sample gases. For these sample gases, a thermal conductivity calorimeter is used. The amount of heat (heat conductivity converted heat amount) obtained based on the thermal conductivity is measured by this, and this measured value and the amount of heat obtained by analysis using a gas chromatograph (hereinafter also referred to as “heat value true value”). Based on the above, the measurement error generated in the heat conductivity converted heat quantity was confirmed. The results are shown in FIG.

From the result of FIG. 4, it is confirmed that a positive correlation is established between the carbon dioxide gas concentration and the measurement error, and a regression line obtained by the least square method (shown in the graph of FIG. 4). According to the straight line), the heat conductivity conversion calorie measured by a thermal conductivity calorimeter is 1.1336 [MJ per 1% by volume of carbon dioxide gas for paraffinic hydrocarbon gas containing carbon dioxide gas] It is understood that a measurement error of / Nm ³ ] occurs. This value almost coincides with the value shown in Table 1.

[Experiment 2]
Four types of natural gas (gas (A) to gas (D)) having the composition shown in Table 2 are used as sample gases, and each of these sample gases is obtained based on thermal conductivity by a thermal conductivity calorimeter. The amount of heat (heat conductivity converted heat amount) and the amount of heat (refractive index converted heat amount) obtained based on the refractive index with a refractive index calorimeter were measured, and obtained by analysis using this measured value and a gas chromatograph. Based on the calorific value (hereinafter, also referred to as “true calorific value”), the measurement error that occurs in each of the heat conductivity conversion calorific value and the refractive index conversion calorie is confirmed, and the measurement error that occurs in the heat conductivity conversion calorie ( The error ratio (thermal conductivity meter error / refractometer error) between the measurement error (refractive meter error) generated in the refractive index converted calorie was calculated. The results are shown in Table 2 below.

  From the results of Table 2 above, the thermal conductivity meter error is larger than the refractometer error in any sample gas consisting of four types of natural gas (gas (A) to gas (D)). It was also confirmed that the ratio of the thermal conductivity meter error to the refractometer error shows a specific value depending on the type of sample gas.

[Experimental Example 3]
Based on the thermal conductivity converted heat quantity and refractive index converted heat quantity measured in Experimental Example 2, the heat quantity Q is calculated under the condition of the correction coefficient α3.05 by the above formula (1), and the value of the heat quantity Q is The calorific value obtained in Example 2 was compared. The results are shown in Table 3.
In Table 3, in each column of the value related to the thermal conductivity calorimeter and the value related to the refractive index calorimeter, the measured value (specifically, the thermal conductivity converted calorific value and the refractive index converted calorific value), The difference between the measured value and the true value of heat is shown as an error value. Further, in the value column for the amount of heat Q, the difference between the calculated value and the true value of heat amount is shown as an error value together with the calculated value according to the equation (1).
Here, the value of the correction coefficient α is determined based on the error ratio (thermal conductivity meter error / refractometer error) obtained in Experimental Example 2, and is an average value thereof.

From the results of Table 3 above, in any sample gas composed of four types of natural gas (gas (A) to gas (D)), the heat quantity Q calculated by the equation (1) is the heat conductivity converted heat quantity. It was confirmed that the difference from the true value of the calorific value was extremely small compared to any of the calorific value converted to the refractive index.
Therefore, according to the calorimetric method of the present invention in which the calorific value of the calorimetric target gas is calculated by the formula (1) based on the thermal conductivity-converted calorie and the refractive index-converted calorie of the calorimetric target gas, the calorimetric target gas It is understood that even if the gas is natural gas or biogas, the calorific value of the calorimetric gas can be measured with high reliability.

  From the results of these experimental examples 1 to 3, the calorific value of the calorimetric target gas is calculated based on the thermal conductivity converted calorific value and the refractive index converted calorific value of the calorimetric target gas with a correction coefficient α of 2 in equation (1). It is confirmed that the measurement can be performed with high reliability by setting the range of .91 to 3.75. In particular, when the calorimetric gas is natural gas or biogas, the formula (1 ), It was confirmed that by setting the correction coefficient α in the range of 2.96 to 3.15, higher reliability can be obtained in the amount of heat obtained.

DESCRIPTION OF SYMBOLS 10 Calorie measuring apparatus 12 Gas pipeline 16A, 16B, 16C Gas flow path 21 Thermal conductivity conversion calorie measurement mechanism 22 Data transmission path 23 Refractive index conversion calorie measurement mechanism 24 Data transmission path 25 Calculation mechanism 27 Display part 28 Data transmission path 31 Chamber 32 Gas unit for measurement 33, 34 Cell unit for standard gas 35 Light source 36 Parallel plane mirror 37 Interference fringe detection means 39 Plane mirror 41 Prism 42 Condensing lens 51 Gas supply line for adjustment 52 Thermal conductivity meter 53 Mixing tank

Claims (4)

A calorimetric method for measuring the calorific value of a gas, comprising:
The calorimetric gas is composed mainly of paraffinic hydrocarbon gas and contains at least one of carbon dioxide gas, carbon monoxide gas, nitrogen gas and oxygen gas. On the basis of the thermal conductivity converted heat quantity A [MJ / Nm ³ ] obtained from the rate and the refractive index converted heat quantity B [MJ / Nm ³ ] obtained from the refractive index of the calorimetric gas, the following formula (1 ) To calculate the calorific value Q [MJ / Nm ³ ] of the calorimetric gas under the condition of 2.91 ≦ correction coefficient α ≦ 3.75.

A calorimetric method for measuring the calorific value of a gas, comprising:
The calorimetric gas is natural gas or biogas,
Based on the thermal conductivity converted heat quantity A [MJ / Nm ³ ] obtained from the thermal conductivity of the calorimetric gas and the refractive index converted heat quantity B [MJ / Nm ³ ] obtained from the refractive index of the calorimetric gas. Then, the calorific value measurement method characterized by calculating the calorific value Q [MJ / Nm ³ ] of the calorimetric measurement target gas under the condition of 2.91 ≦ correction coefficient α ≦ 3.75 by the following equation (1) .

The calorific value measurement method according to claim 1 or 2, wherein a value of the correction coefficient α is 2.96 to 3.15 in the equation (1) . It has a thermal conductivity conversion calorimetry mechanism for measuring the heat conductivity conversion calorie of the gas for calorimetric measurement, and a refractive index conversion calorimeter for measuring the refractive index conversion calorie of the calorimetry gas ,
The calorie | heat_amount of calorie | heat_measurement gas is computed by the calorie | heat amount measuring method in any one of Claims 1-3, The calorimeter is characterized by the above-mentioned.

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