JP5462585B2 - Combustion calorie measuring system and combustion calorie measuring method - Google Patents

Description

  The present invention relates to a system and method for measuring the heat of combustion of a specimen using a corn calorimeter.

  A corn calorimeter is an apparatus for obtaining a heat generation rate and a total heat generation amount of a sample using an oxygen consumption method (see Patent Document 1 below). It is known that the relationship between the amount of heat generated by burning the sample and the amount of oxygen consumed in the burning process is generally constant (13.1 MJ per kg of oxygen) regardless of the sample. The corn calorimeter obtains the calorific value of the sample based on this law using the amount of oxygen consumed by combustion. Here, the reference oxygen concentration is the atmospheric oxygen concentration.

  It is known that the oxygen concentration in the atmosphere exhibits a constant value extremely stably in a dry state. For this reason, improvement in the measurement accuracy of the calorific value can be expected by using the oxygen concentration in the atmosphere as a reference.

  In a corn calorimeter, the calorific value of the sample can be measured by burning the sample by ignition by heating or ignition by an ignition source, and measuring the oxygen concentration in the exhaust gas during combustion. Here, for example, discharge is used as the ignition source.

  The heat generation rate in the oxygen consumption method is obtained by the following calculation formula. The total heat generation amount can be calculated from the heat generation rate. In the following description, the term “heat generation amount” may be used including the meaning of the heat generation rate.

  By the way, conventionally, in the measurement of the calorific value using a corn calorimeter, there are cases in which variations and deviations in the measured values occur sporadically. As a result of investigation of the cause by the present inventors, the following knowledge was obtained.

  When methane calibration for a corn calorimeter or a combustion test using this apparatus is performed, oxygen in the installation chamber of the apparatus is consumed and the amount of oxygen decreases. The recovery of the oxygen concentration is generally extremely slow and often affects the next measurement result. Here, methane calibration is a technique for calibrating the apparatus by using methane as a combustion target in a corn calorimeter. Since this method itself is already known, detailed description is omitted.

  Furthermore, there are cases where workers move around or work near the corn calorimeter for the operation and maintenance of the corn calorimeter. Then, it was found that the oxygen concentration in the corn calorimeter, particularly in the vicinity of the heating furnace, slightly fluctuated, affecting the measurement results.

JP 2006-308288 A

  The present invention has been made in view of the above situation. The main object of the present invention is to improve the accuracy of test results obtained using a corn calorimeter.

  Means for solving the above-described problems can be described as follows.

(Item 1)
An installation room, a corn calorimeter, an indoor air intake, and a first closing member;
The installation room includes a first opening that communicates the inside and outside of the installation room,
The corn calorimeter is installed inside the installation room,
The indoor intake section is configured to blow outside air introduced through a pipe into the installation room,
The first closing member is formed in a substantially sheet shape having flexibility,
And the first closing member is attached to the first opening and is configured to restrict ventilation through the first opening,
Furthermore, at least a part of the side edge of the first closing member can be separated from the peripheral edge of the first opening, thereby allowing an operator to enter and exit through the first opening. And
Furthermore, the other part of the side edge of the first closing member is a first spacing portion that is spaced from the periphery of the first opening, whereby the air in the installation chamber is A combustion calorie measurement system characterized by being configured to be able to leak to the outside of the installation chamber via the first separation portion.

(Item 2)
A second closure member,
The installation chamber further includes a second opening,
The second closing member is formed in a substantially sheet shape having flexibility,
And the 2nd closing member is attached to the 2nd opening, and has composition which restricts ventilation via the 2nd opening,
Further, at least a part of the side edge of the second closing member serves as a second spaced-apart portion that is spaced from the periphery of the second opening, whereby the air in the installation chamber is It is configured to be able to leak to the outside of the installation room via the two spaced apart parts,
The combustion calorie measurement system according to item 1, wherein the first opening and the second opening are installed at positions that are substantially opposed to each other.

(Item 3)
The combustion heat quantity measurement system according to item 2, wherein the indoor intake section is configured to blow out outside air toward the second opening.

(Item 4)
Any one of items 1 to 3, wherein the side edge of the first closing member that is separable from the periphery of the first opening is detachable from the periphery of the first opening or the vicinity thereof. The combustion calorie measurement system according to item.

(Item 5)
The corn calorimeter is equipped with a heating furnace for heating the sample,
The indoor intake section includes a first air outlet and a second air outlet,
The first air outlet is configured to send outside air toward the second opening,
The combustion air quantity measurement system according to item 2, wherein the second outlet is configured to send outside air toward the heating furnace or the vicinity thereof.

(Item 6)
The combustion calorie measurement system according to item 5, wherein an amount of the outside air blown from the first outlet is larger than an amount of the outside air blown from the second outlet.

(Item 7)
In the vicinity of the side edge of the first closing member that can be separated from the peripheral edge of the first opening so that an operator can enter and exit through the first opening, the deformation of the first closing member is restricted. The combustion calorific value measuring system according to any one of items 1 to 6, wherein a reinforcing part is provided.

(Item 8)
It also has an outdoor exhaust,
The outdoor exhaust unit sends out the exhaust from the corn calorimeter to the outside of the installation chamber,
The combustion heat quantity measurement system according to any one of items 1 to 7, wherein an intake air amount by the indoor intake portion is greater than an exhaust amount by the outdoor exhaust portion.

(Item 9)
A measurement method using a combustion calorific value measurement system including an installation chamber, a corn calorimeter, an indoor intake section, and a first closing member,
The installation room includes a first opening that communicates the inside and outside of the installation room,
The corn calorimeter is installed inside the installation room,
The indoor intake section is configured to blow outside air introduced through a pipe into the installation room,
The first closing member is formed in a substantially sheet shape having flexibility,
And the first closing member is attached to the first opening and is configured to restrict ventilation through the first opening,
Furthermore, at least a part of the side edge of the first closing member can be separated from the peripheral edge of the first opening, thereby allowing an operator to enter and exit through the first opening. And
Furthermore, the other part of the side edge of the first closing member is a first spacing portion that is spaced from the periphery of the first opening, whereby the air in the installation chamber is It is configured to be able to leak to the outside of the installation chamber via the first separation portion,
A method for measuring a calorific value of heat, wherein the measurement is performed by the cone calorimeter while the outside air is blown into the installation room by the indoor air intake part to release the outside air from the first separation part of the first closing member. .

  According to the combustion calorie measurement system of the present invention, it is possible to improve the accuracy of test results obtained using a cone calorimeter.

It is a longitudinal cross-sectional view for demonstrating the outline of the combustion calorie | heat amount measuring system which concerns on one Embodiment of this invention. It is a cross-sectional view of the installation chamber part of FIG. It is explanatory drawing equivalent to the right side surface of an installation chamber which shows the 1st opening part formed in the installation chamber. It is principal part sectional drawing in alignment with the AA of FIG. It is explanatory drawing equivalent to the left side surface of an installation chamber which shows the 2nd opening part formed in the installation chamber.

  Hereinafter, a combustion calorie measuring system using a corn calorimeter according to an embodiment of the present invention will be described with reference to the accompanying drawings.

(Configuration of this embodiment)
The system of the present embodiment includes an installation room 1, a cone calorimeter 2, an indoor air intake unit 3, an outdoor exhaust unit 4, a first closing member 5, a second closing member 6, and a computer terminal 7. (See FIG. 1 and FIG. 2).

(Installation room)
The installation room 1 is installed inside a building 100 that is substantially sealed. Here, “substantially closed” refers to a state in which the amount of outside air introduced is small or almost completely blocked, as in a room in which ordinary measuring devices are arranged. Here, the building 100 may be a room provided in the building.

  The installation chamber 1 includes a first opening 11 and a second opening 12. Each of the first opening 11 and the second opening 12 communicates the inside and outside of the installation chamber 1 (see FIG. 1). The 1st opening part 11 and the 2nd opening part 12 are installed in the position which opposes substantially (refer FIG. 1).

(Corn calorimeter)
The corn calorimeter 2 is installed inside the installation room 1. The cone calorimeter 2 includes an explosion-proof door 21, a heating furnace 22, a main body 23, a hood 24, and an exhaust duct 25.

  The explosion-proof door 21 covers the side surface of the heating furnace 22. The upper surface of the explosion-proof door 21 is opened. Moreover, the lower surface of the explosion-proof door 21 is also opened, so that necessary air can be taken into the heating furnace 22 from the opened lower surface. The explosion-proof door 21 can be opened and closed so that the heating furnace 22 can be exposed to the outside when a sample is placed in the heating furnace 22. The explosion-proof door 21 is for protecting the surrounding environment and workers from the scattered matter accompanying the combustion of the sample.

  The heating furnace 22 includes a sample holder and a combustion unit, and can heat and burn the sample.

The main body 23 includes a flow rate measuring unit and an oxygen analyzer (not shown) for measuring the properties of the combustion gas flowing inside the exhaust duct 25. The main body 23 obtains actual measured values such as gas concentration, temperature, pressure, etc., which are basic data for calorific value calculation, calculates the calorific value of the sample based on the amount of oxygen consumed by burning the sample, and the calorific value, data to the computer Output can be performed. More specifically, the main body 23 has various gas concentrations (the ambient air before the combustion test and the exhaust gas after the combustion if the combustion test is in progress) flowing through the exhaust duct 25 (see FIG. data such as oxygen, CO _2, CO, etc.), fluid temperature, fluid pressure is measured. The details of the device for acquiring these data are not shown because existing methods can be used. For example, in order to measure various gas concentrations, a small branch pipe is provided in the middle of the exhaust duct 25, and measurement is performed by drawing the fluid in the exhaust duct 25 into the gas analyzer provided in the main body 23 using a pump. Is possible. In order to measure the fluid temperature, thermocouples are inserted into a plurality of locations in the exhaust duct 25 to measure the temperature, and the output of the thermocouple is collected by a data collector (data logger) incorporated in the main body 23. . In order to measure the fluid pressure, a small branch pipe is attached to the exhaust duct 25 (particularly, a portion extending in the vertical direction), and this branch pipe is connected to a differential pressure gauge installed in the main body 23. Measurement is possible. Note that the types of measurement data and the measurement methods described above are merely examples.

  The main body 23 also includes a mechanism for drying the combustion gas flowing from the exhaust duct 25 to the oxygen analyzer, for example, a heater (not shown). Since this drying mechanism is already known, description thereof is omitted.

  The hood 24 is disposed above the heating furnace 22 and collects combustion gas generated in the heating furnace 22.

  The exhaust duct 25 is for conveying the combustion gas collected by the hood 24 to the outside. The exhaust duct 25 sends exhaust from the hood 24 to the outdoor exhaust unit 4. In the exhaust duct 25, exhaust is transferred in the direction of the outdoor exhaust unit 4 using the exhaust blower 251.

  Since the other structure in the corn calorimeter 2 may be basically the same as that of the prior art, further detailed description is omitted.

(Indoor air intake)
The indoor air intake unit 3 includes a first air outlet 31, a second air outlet 32, and a pipe 33. The first air outlet 31 and the second air outlet 32 are installed near the ceiling of the installation chamber 1. The pipe 33 can introduce outside air into these air outlets. Specifically, one end of the pipe 33 is connected to each outlet, and the other end of the pipe 33 is disposed outside the building 100. In addition, a blower (not shown) for sending outside air into the installation chamber 1 is attached to each outlet. Thereby, each blower outlet becomes a structure which blows the external air introduce | transduced via the piping 33 into the inside of the installation chamber 1. FIG.

  The 1st blower outlet 31 is set as the structure which blows off external air in the direction of the 2nd opening part 12. As shown in FIG. More specifically, the first air outlet 31 in this embodiment includes a wind direction control member 311. The wind direction control member 311 allows the outside air blowing direction to go to the second opening 12.

  The 2nd blower outlet 32 is set as the structure which blows off external air toward the heating furnace 22 or its vicinity.

  Furthermore, in this embodiment, the amount of outside air blown from the first air outlet 31 is made larger than the amount of outside air blown from the second air outlet 32.

  Further, in this embodiment, the total intake amount by the indoor intake unit 3 is larger than the exhaust amount by the collection hood 41 (described later) of the outdoor exhaust unit 4. Preferably, the total intake amount by the indoor intake unit 3 is 1.5 times or more the exhaust amount by the collection hood 41 of the outdoor exhaust unit 4.

(Outdoor exhaust section)
The outdoor exhaust unit 4 includes a collection hood 41 and an exhaust path 42.

  The collection hood 41 is disposed in the vicinity of the outlet of the exhaust duct 25 of the corn calorimeter 2 and collects the exhaust from the duct 25.

  The exhaust path 42 extends to the outside of the building 100 so that the exhaust recovered by the recovery hood 41 can be sent to the outside of the building 100 via an exhaust blower (not shown) attached to the exhaust path 42. It has been extended.

  With the above configuration, the outdoor exhaust unit 4 can discharge the air in the installation room 1 to the outside of the building 100.

(First closing member)
The first closing member 5 is formed in a substantially sheet shape having flexibility. Specifically, the first closing member 5 in this embodiment is formed of a transparent sheet made of a synthetic resin that is easily deformed.

  The 1st closing member 5 is attached to the 1st opening part 11, and becomes a structure which restrict | suffices the ventilation | gas_flowing through the 1st opening part 11 (refer FIG.1, FIG3 and FIG.4). Two side edges of the first closing member 5 are fixed to the periphery of the first opening 11. Specifically, the upper edge of the first closing member 5 and the left edge in the drawing are fixed to the periphery of the first opening 11.

  Furthermore, the remaining two side edges of the first closing member 5 can be separated from the peripheral edge of the first opening 11. More specifically, one side edge (left side edge in FIG. 3) of the first closing member 5 can be attached to and detached from the peripheral edge of the first opening 11 or the vicinity thereof. For example, a hook-and-loop fastener (not shown) can be used as the detachable means. Thus, an operator can enter and exit through the first opening 11.

  Furthermore, as shown in FIG. 1, the side edge in the vicinity of the lower end of the first closing member 5 is a first separation portion 51 that is separated from the periphery of the first opening portion 11. Thereby, the air in the installation chamber 1 can leak to the outside of the installation chamber 1 through the first separation portion 51. The first separation portion 51 may have any structure that allows the outside air to escape from the opening when the outside air is blown into the installation chamber 1. When the outside air is not introduced, the first separation portion 51 can be separated from the opening. It does not have to be separated.

  In the present embodiment, a reinforcing portion 52 for restricting deformation of the first closing member 5 is provided in the vicinity of the side edge of the first closing member 5 that can be separated from the periphery of the first opening portion 11. (See FIGS. 3 and 4). In this embodiment, the reinforcing portion 52 is configured by a thin plate and is attached to the surface of the first closing member 5.

(Second closing member)
Since the second closing member 6 has substantially the same configuration as the first closing member 5, the description of the common configuration will be simplified. The second closing member 6 is formed in a substantially sheet shape having flexibility. Furthermore, the second closing member 6 is attached to the second opening 12 and has a configuration that restricts ventilation through the second opening 12.

  In this embodiment, the upper side and the left and right side edges of the second closing member 6 are fixed to the periphery of the second opening 12.

  Further, the side edges in the vicinity of the lower ends of the left and right side edges of the second closing member 6 form second separation portions 61 that are separated from the peripheral edge of the second opening 12. Thereby, the air in the installation chamber 1 can leak to the outside of the installation chamber 1 through the second separation portion 61.

  The material of the second closing member 6 is the same as that of the first closing member 5 in this embodiment, but it is possible to use a different material.

  The computer terminal 7 is installed outside the installation room 1 and inside the building 100. The computer terminal 7 controls the operation of the corn calorimeter 2 and further stores the obtained data.

  An exhaust fan 8 for discharging the air inside the building 100 to the outside is attached to the wall surface of the building 100 (see FIG. 1).

  An air conditioner 9 for adjusting the temperature in the installation room 1 is installed on the ceiling of the installation room 1. The air blowing direction from the air conditioner is as much as possible along the ceiling, thereby preventing interference with the flow of outside air introduced.

(Operation of this embodiment)
Next, the operation of the combustion heat quantity measurement system configured as described above will be described.

  First, an intake blower (not shown) of the indoor intake section 3 is operated to take in outside air from the pipe 33. The taken-out outside air is blown into the installation chamber 1 from the first blower outlet 31 and the second blower outlet 32, respectively.

  Here, the 1st blower outlet 31 blows off external air toward the 2nd opening part 12, as FIG. 1 shows. The blown air creates an air flow toward the second opening 12 in the installation chamber 1. Furthermore, the air pressure in the installation chamber 1 slightly increases due to the outside air blowing.

  Due to these actions, a part of the outside air blown out from the first air outlet 31 is mainly mixed with the air in the installation chamber 1, and mainly the second spacing portion in the second closing member 6 of the second opening 12. 61 is discharged to the outside. Alternatively, depending on the flow of air, the outside air can be discharged out of the room also from the first separating portion 51 of the first closing member 5 of the first opening 11.

On the other hand, the 2nd blower outlet 32 blows off external air toward the heating furnace 22 of the cone calorimeter 2, or its vicinity. For this reason, a part of the outside air blown out from the second outlet 32 flows from the opening surface of the explosion-proof door 21 to the heating furnace 22.

In addition, most of the outside air blown out from the second air outlet 32 is discharged from the first spacing part 51 of the first closing member 5 or the second spacing part 61 of the second closing member 6 to the outside.

  In the corn calorimeter 2, the combustion test of the sample placed in the heating furnace 22 is performed in the same manner as before.

  The combustion gas generated by the combustion is sent to the recovery hood 41 of the outdoor exhaust unit 4 through the exhaust duct 25 and further discharged to the outside through the exhaust path 42. In the present embodiment, a part of the outside air blown into the installation chamber 1 is also discharged outside by the outdoor exhaust unit 4. The main purpose of the outdoor exhaust unit 4 is the exhaust duct of the cone calorimeter 2. 25 is a treatment of exhaust gas discharged from 25.

  In the system of the present embodiment, during the combustion test in the heating furnace 22, the outside air is constantly blown into the installation chamber 1 by the indoor intake section 3. Thereby, the blown outside air is always discharged to the outside through the first separation portion 51 of the first closing member 5 or the second separation portion 61 of the second closing member 6.

  Usually, when an operator enters and leaves the vicinity of the corn calorimeter 2, the exhalation of the worker diffuses, and the oxygen concentration in the vicinity of the corn calorimeter 2 may fluctuate although it is very slight. Alternatively, when an operator enters or leaves the installation room 1 to approach the corn calorimeter 2, the air inside the building 100 (this may have a different oxygen concentration from the outside air) There is a possibility of entering the interior of the installation room 1.

  On the other hand, in this embodiment, as described above, since the outside air blown into the installation chamber 1 is always released outside, even if the operator enters the installation chamber 1, the exhaled air diffuses and is heated. Before the oxygen concentration in the vicinity of the furnace 22 fluctuates, exhaled air can be discharged together with the outside air to the outdoors.

  Similarly, when the air in the building 100 enters the inside of the installation room 1, it can be quickly discharged to the outside of the installation room 1.

  For this reason, according to this embodiment, there is an advantage that fluctuation of the oxygen concentration in the vicinity of the heating furnace 22 can be prevented, and deterioration of measurement accuracy in the cone calorimeter can be prevented.

  In addition, since the oxygen concentration in the atmosphere does not depend on the atmospheric pressure, the measurement accuracy does not deteriorate even if the atmospheric pressure inside the installation chamber 1 slightly rises by blowing outside air into the installation chamber 1.

  In this embodiment, since the first closing member 5 and the second closing member 6 are made of a flexible material, even if the amount of outside air blown into the installation chamber 1 fluctuates, these closing members 5 and 6 However, by appropriately deforming, outside air can be quickly released to the outside of the room. Even if the amount of outside air blown in increases, if the amount of outside air flowing out does not change, the outside air may stay in the installation chamber 1, and the measurement may be adversely affected by an irregular or unintended air flow. On the other hand, in this embodiment, since the blown outside air can be quickly released to the outside of the room, the flow of the blown outside air is stabilized, and as a result, the measurement accuracy can be further improved.

  Moreover, in this embodiment, since it was set as the structure which forms a some opening part in the installation chamber 1, and discharges external air from these, there also exists an advantage that discharge | emission of external air becomes smooth. That is, when there is only one opening, the time until the outside air is discharged becomes long, and the measurement accuracy may be deteriorated due to an unexpected air flow or the like as described above. On the other hand, in the present embodiment, it is possible to improve measurement accuracy by smoothly discharging the outside air.

  Furthermore, in the present embodiment, since the first opening 11 and the second opening are arranged to face each other, the outside air can be discharged more rapidly.

  In the present embodiment, outside air is sent out from the first air outlet 31 toward the second opening 12. Here, when the outside air is sent out toward the first opening portion 11 where the person enters and exits, the air flow is reflected by the movement of the person and the movement of the closing member (curtain) associated therewith, and the heating furnace 22 is reflected. There is a risk of shaking the heating flame. For this reason, it becomes difficult to increase the amount of blowing from the first outlet 31. Even when the outside air is blown out from the first air outlet 31 toward the wall, the same problem may occur because all of the air flow is reflected by the wall. On the other hand, in this embodiment, since the outside air is sent out toward the second opening 12 that is not supposed to enter or exit from the person and is released to the outside, the amount of air blown from the first air outlet 31 is increased. There is also an advantage that it becomes easy.

  Moreover, in this embodiment, since the side edge of the 1st closing member 5 attached to the 1st opening part 11 was made detachable with respect to the 1st opening part 11, except at the time of an operator's entrance / exit room, The side edge of the 1 closing member 5 can be fixed to the first opening 11. When the left and right side edges of the first closing member 5 are always open, the first closing member 5 largely fluctuates due to the flow of outside air blown into the installation chamber 1, and as a result, the outside of the installation chamber 1 ( In other words, there is a possibility that the air in the building) is caught in the installation room 1. As a result, the oxygen concentration inside the installation chamber 1 may fluctuate. On the other hand, in this embodiment, since the flapping of the side edge of the first closing member 5 can be suppressed, fluctuations in the oxygen concentration in the installation chamber 1 can be prevented.

  In the present embodiment, since the outside air is blown out from the second outlet 32 toward the heating furnace 22 or the vicinity thereof, the oxygen concentration in the vicinity of the heating furnace 22 can be made closer to the oxygen concentration in the outside air. .

  Further, in the present embodiment, the amount of outside air blown from the second air outlet 32 is made considerably smaller than the amount of air blown from the first air outlet. For this reason, it is possible to reduce the possibility that the flame of the heating furnace 22 is shaken by the blowing of outside air from the second outlet 32.

  In the present embodiment, the amount of outside air blown from the first air outlet is considerably larger than that of the second air outlet, so that a variable element (for example, exhaled air) inside the installation room 1 is quickly discharged. It becomes possible.

  Furthermore, in this embodiment, since the reinforcement part 52 was provided in the 1st closure member 5, the possibility of the entrainment and intrusion of the outdoor air accompanying a person's going in and out can be reduced. Since the first closing member 5 is flexible, the first closing member 5 may be greatly deformed when an operator enters and exits, and air outside the installation chamber 1 may be brought into the installation chamber 1. On the other hand, in this embodiment, since the reinforcement part 52 was provided, the excessive deformation | transformation of the closing member 5 accompanying an operator's going in and out is prevented, and this suppresses the fluctuation | variation of the oxygen concentration in the installation chamber 1 low. It becomes possible. In addition, in this embodiment, although the reinforcement part 52 was made into the thin plate, if the excessive deformation | transformation of the closing member 5 can be prevented, the shape will not be restrict | limited in particular.

  Moreover, in this embodiment, since the computer terminal 7 was arrange | positioned on the outer side of the installation room 1, even when an operator is operating the computer terminal 7, there also exists an advantage that the oxygen concentration in the installation room 1 does not fluctuate.

  Furthermore, in this embodiment, since the 1st separation part 51 was provided near the lower end of the 1st closure member 5, and the 2nd separation part 61 was provided near the lower end of the 2nd closure member 6, from the ceiling vicinity of the installation chamber 1 The outside air blown out can be discharged smoothly. For this reason, the fluctuation | variation of the oxygen concentration in the installation chamber 1 can be suppressed more reliably.

  Furthermore, in this embodiment, since the synthetic resin sheet | seat is used as the 1st closing member 5 and the 2nd closing member 6, the flow of the air which passes through these closing members can be interrupted | blocked reliably. If these members have high air permeability, air may enter from outside the installation chamber 1 and the oxygen concentration may fluctuate. On the other hand, in this embodiment, such a possibility can be reduced. Furthermore, in this embodiment, since the 1st closing member 5 and the 2nd closing member 6 are made transparent, there also exists an advantage that the room can be observed through these.

  In addition, the combustion calorie | heat amount measuring system using the corn calorimeter of this invention is not limited to the said embodiment. This system can be variously modified without departing from the gist of the present invention.

  For example, the first closing member 5 and the second closing member 6 can be made of paper or cloth other than synthetic resin. However, as described above, if a material having high air permeability is used as these members, the oxygen concentration may fluctuate due to the intrusion of air from the outside. Therefore, it is preferable to use a material having as low air permeability as possible.

  Furthermore, in the present embodiment, the total intake amount by the indoor intake unit 3 is made larger than the total exhaust amount by the outdoor exhaust unit 4, so excessive intake air is discharged from the first opening 11 and the second opening 12. There is also an advantage that it can be discharged at all times.

  Note that, as in the present embodiment, when the intake air amount is increased, the temperature around the corn calorimeter 2 is likely to be influenced by the outside air. On the other hand, it is possible to keep temperature fluctuation low by increasing the capacity of the air conditioner 9 (for example, at least three times the normal capacity).

DESCRIPTION OF SYMBOLS 1 Installation room 11 1st opening part 12 2nd opening part 2 Cone calorimeter 21 Explosion-proof door 22 Heating furnace 23 Main body of cone calorimeter 24 Hood 25 Exhaust duct 251 Exhaust blower 3 Indoor air intake part 31 1st blower outlet 311 Wind direction control Member 32 Second outlet 33 Piping 4 Outdoor exhaust part 41 Recovery hood 42 Exhaust path 5 First closing member 51 First spacing part 52 Reinforcement part 6 Second closing member 61 Second spacing part 7 Computer terminal 8 Exhaust fan 9 Air conditioner 100 building

Claims (7)

An installation chamber, a corn calorimeter, an indoor air intake, a first closing member, and a second closing member ;
The installation room includes a first opening that communicates the inside and outside of the installation room,
The corn calorimeter is installed inside the installation room,
The indoor intake section is configured to blow outside air introduced through a pipe into the installation room,
The first closing member is formed in a substantially sheet shape having flexibility,
And the first closing member is attached to the first opening and is configured to restrict ventilation through the first opening,
Furthermore, at least a part of the side edge of the first closing member can be separated from the peripheral edge of the first opening, thereby allowing an operator to enter and exit through the first opening. And
Furthermore, the other part of the side edge of the first closing member is a first spacing portion that is spaced from the periphery of the first opening, whereby the air in the installation chamber is It is configured to be able to leak to the outside of the installation chamber via the first separation portion ,
The installation chamber further includes a second opening,
The second closing member is formed in a substantially sheet shape having flexibility,
And the 2nd closing member is attached to the 2nd opening, and has composition which restricts ventilation via the 2nd opening,
Further, at least a part of the side edge of the second closing member serves as a second spaced-apart portion that is spaced from the periphery of the second opening, whereby the air in the installation chamber is It is configured to be able to leak to the outside of the installation room via the two spaced apart parts,
The first opening and the second opening are installed at substantially opposite positions,
The corn calorimeter is equipped with a heating furnace for heating the sample,
The indoor intake section includes a first air outlet and a second air outlet,
The first air outlet is configured to send outside air toward the second opening,
The second air outlet is configured to send outside air toward the heating furnace or the vicinity thereof . The combustion heat quantity measurement system according to claim 1 , wherein the indoor intake section is configured to blow outside air toward the second opening. The side edge of the first opening the first closure member which is capable spaced from the periphery of the according to claim 1 or 2 attachable to and detachable from the periphery or near the first opening Combustion calorie measurement system. The combustion calorific value measurement system according to any one of claims 1 to 3 , wherein an amount of the outside air blown from the first outlet is larger than an amount of the outside air blown from the second outlet. . The deformation of the first closing member is restricted in the vicinity of the side edge of the first closing member that can be separated from the peripheral edge of the first opening so that an operator can enter and exit through the first opening. The combustion calorific value measuring system according to any one of claims 1 to 4 , wherein a reinforcing portion is provided. It also has an outdoor exhaust,
The outdoor exhaust unit sends out the exhaust from the corn calorimeter to the outside of the installation chamber,
The combustion calorie measurement system according to any one of claims 1 to 6 , wherein an intake air amount by the indoor intake portion is greater than an exhaust amount by the outdoor exhaust portion. A measurement method using a combustion calorific value measuring system including an installation chamber, a corn calorimeter, an indoor air intake, a first closing member, and a second closing member ,
The installation room includes a first opening that communicates the inside and outside of the installation room,
The corn calorimeter is installed inside the installation room,
The indoor intake section is configured to blow outside air introduced through a pipe into the installation room,
The first closing member is formed in a substantially sheet shape having flexibility,
And the first closing member is attached to the first opening and is configured to restrict ventilation through the first opening,
Furthermore, at least a part of the side edge of the first closing member can be separated from the peripheral edge of the first opening, thereby allowing an operator to enter and exit through the first opening. And
Furthermore, the other part of the side edge of the first closing member is a first spacing portion that is spaced from the periphery of the first opening, whereby the air in the installation chamber is It is configured to be able to leak to the outside of the installation chamber via the first separation portion,
The installation chamber further includes a second opening,
The second closing member is formed in a substantially sheet shape having flexibility,
And the 2nd closing member is attached to the 2nd opening, and has composition which restricts ventilation via the 2nd opening,
Further, at least a part of the side edge of the second closing member serves as a second spaced-apart portion that is spaced from the periphery of the second opening, whereby the air in the installation chamber is It is configured to be able to leak to the outside of the installation room via the two spaced apart parts,
The first opening and the second opening are installed at substantially opposite positions,
The corn calorimeter is equipped with a heating furnace for heating the sample,
The indoor intake section includes a first air outlet and a second air outlet,
The first air outlet is configured to send outside air toward the second opening,
The second air outlet is configured to send outside air toward the heating furnace or the vicinity thereof,
Combustion calorimetry method comprising the following steps (a) and (b) :
(A) a step of sending outside air toward the second opening using the first air outlet; and
(B) A step of sending outside air toward the heating furnace or the vicinity thereof using the second outlet .

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