KR102631463B1 - Apparatus for maintaining temperature of ordinary temperature water for radiation heat measuring sensor of real scale fire experiment laboratory, and radiation heat measuring system having the same - Google Patents

Abstract

Due to the nature of full-scale fire experiments, it is impossible to maintain the temperature in large outdoor spaces, etc., and by preventing the room temperature water in the room temperature water pipe connected to the radiant heat measurement sensor from rising depending on the season or freezing and bursting due to temperature drop, A room temperature water temperature maintenance device for a radiant heat measurement sensor in a full-scale fire laboratory and a radiant heat measurement system equipped with the same are provided, which can prevent delays in the full-scale fire test schedule or decrease in data reliability due to environmental changes.

Description

Room temperature water temperature maintenance device for radiant heat measurement sensor in a full-scale fire laboratory and radiant heat measurement system equipped with the same

The present invention relates to a room temperature water temperature maintenance device for a radiant heat measurement sensor, and more specifically, to enable a radiant heat measurement sensor to measure radiant heat while maintaining a constant temperature regardless of the season or external environment in a full-scale fire laboratory using the radiant heat measurement method. It relates to a room temperature water temperature maintenance device for a radiant heat measurement sensor in a full-scale fire laboratory, including a room temperature water temperature maintenance device for heating and cooling room temperature water, and a radiant heat measurement system equipped with the same.

With recent rapid growth, cities are gradually changing and developing with buildings with various functions. In particular, as an alternative to resolving the housing shortage caused by overpopulation in downtown areas, buildings have become taller and the gaps between buildings have become narrower.

In addition, with the development of construction technology, the appearance of the exterior has become more important, leading to a preference for buildings with excellent aesthetics through the use of various exterior materials.

In Korea, the energy efficiency rating certification system for buildings is implemented and the use of energy-efficient exterior materials is actively recommended. However, these exterior materials have safety issues due to their vulnerability to fire due to organic insulation.

Overseas, various experiments and research are being conducted to prevent the risk of fire spreading due to such exterior materials.

However, in Korea, the KS standard for these exterior materials (KS F 8414 Fire safety performance test method for exterior finishing systems of buildings) has been introduced, but the separation distance between building side walls is not clear in the Building Act, so when a fire occurs in exterior materials, the radiant heat causes the fire to spread to adjacent buildings. There is a problem that the risk of it spreading is very high.

Meanwhile, as a technology related to heat release rate measurement, Republic of Korea Patent No. 10-686374 discloses an invention titled “Heat release rate measurement and fire evaluation element analysis system according to specimen combustion,” which is explained with reference to FIG. 1 do.

Figure 1 is a diagram illustrating a system for measuring heat release rate and analyzing fire evaluation factors according to the combustion of a specimen according to the prior art.

Referring to Figure 1, the heat release rate measurement and fire evaluation factor analysis system according to the conventional technology according to the combustion of the specimen is the heat release rate and ignition time, smoke generation amount, mass reduction rate, oxygen consumption, CO Each device for measuring and analyzing /CO ₂ production etc. is installed in a rack (Rack: 11).

Each device,

Various input means (13) such as a keyboard for command input and a panel for command input to measure the change in mass during combustion of the specimen (12); A computer including a monitor (14) and a central processing unit (15); A calorimeter (16) for mounting and igniting the specimen (12) and collecting combustion gases during combustion; An exhaust device that discharges combustion gas to the outside through the calorimeter (16); An exhaust fan (17) installed on one side of the exhaust device to exhaust combustion gases to the outside; and a fan control means (18) such as a motor that controls the speed of the exhaust fan.

According to the heat release rate measurement and fire evaluation element analysis system according to the combustion of specimens according to the conventional technology, the combustion characteristics in the event of fire of various products can be easily and accurately tested, and in addition, the heat during combustion of products used as materials for various buildings can be easily and accurately tested. By testing characteristics such as emission rate, it is possible to predict the actual size, development, and prediction of a fire.

Meanwhile, as another related technology, Republic of Korea Patent No. 10-977617 discloses an invention titled “Room Corner Combustion Test Measurement System,” which is explained with reference to FIG. 2.

Figure 2 is a diagram for explaining a room corner combustion test measurement system according to the prior art.

Referring to Figure 2, the room corner combustion test measurement system according to the prior art is,

main housing (21); A duct (22) installed in the upper part of the main housing (21); An exhaust hood 23 that is installed at the entrance of the duct 22 and guides the combustion gases generated in the fire for combustion tests to be collected and discharged into the duct 22; A fixed test stand (24) installed at the lower part of the discharge hood (23); A main test room (25) equipped with a room body (25a) and a burner (25b) installed therein, and installed to be close to and spaced apart from the fixed test table (44); A moving unit provided with a guide rail (26) and driving the main test room (25) to be movable; Radiant heat measuring device (27); and a combustion gas analysis device that measures combustion gas discharged through the exhaust hood (23).

According to the room corner combustion test measurement system according to the conventional technology, two different types of combustion tests can be performed with one system, and different combustion tests can be performed continuously, and the external air radiant heat generated during the combustion test can be measured. By providing a radiant heat measuring device to measure , it is possible to measure the possibility of flame spread to the outside air due to the heat generated during a fire.

Meanwhile, Republic of Korea Patent Publication No. 2012-70087 discloses an invention titled “10 MW large scale calorimeter”, which will be described with reference to FIG. 2.

Figure 3 is a schematic configuration diagram of a 10 MW large scale calorimeter according to the prior art.

Referring to FIG. 3, the 10 MW large scale calorimeter 40 according to the prior art includes a collection hood 41 through which combustion gases generated during a fire for a combustion test are collected and introduced; A discharge duct (42) installed in communication with the upper part of the collection hood (41) and installed in a horizontal state; A combustion gas analysis device (43) that measures combustion gas that flows through the collection hood (41) and then passes through the exhaust duct (42); An orifice unit 44 installed to increase the discharge speed of combustion gas flowing into the collection hood 41 and entering the discharge duct 42; And a guide vane (45) installed between the orifice unit (44) and the combustion gas analysis device (43) to guide the combustion gas moving toward the combustion gas analysis device (43) to be uniformly distributed and move in the horizontal direction. It is composed.

The hood 41 is installed directly above the combustion position for burning the test specimen 30 for the combustion test. This collection hood 41 includes an extension portion 41a whose entrance is expanded toward the bottom; and an extension part (41b) connected to the upper part of the extension part (41a) and extending to have a constant upper and lower pipe cross-sectional area.

The discharge ducts 42 are connected to each other at the top of the collection hood 41 and are installed horizontally. Through this discharge duct 42, the combustion gas collected in the collection hood 41 can be moved and discharged to the outside. One or more suction pumps for collecting combustion gas may be installed on the discharge end side of the discharge duct 42.

The combustion gas measuring device 43 is installed in a predetermined portion of the exhaust duct 42 and includes a mass flow rate measuring device that measures the differential pressure due to the flow rate of the combustion gas passing through the exhaust duct 42 and calculates the mass flow rate. A plurality of thermometers measuring the temperature of combustion gases; A gas analyzer that measures the amount of oxygen, carbon monoxide, and carbon dioxide contained in combustion gas; and an optical unit installed in the exhaust duct 42 to measure the amount of smoke in the combustion gas.

The orifice portion 44 is installed at the connection portion of the collection hood 41 and the discharge duct 42. This orifice unit 44 increases the moving speed of the combustion gas collected and introduced through the collection hood 41 when it moves to the discharge duct 42, so that the combustion gas is more evenly distributed in the guide vane 45. It can be guided and moved in a horizontal state. That is, by controlling the movement speed so that the combustion gas moves at a certain speed or higher, the combustion gas can be moved to the combustion gas measuring device 43 while maintaining the transfer speed and direction of combustion gas in a horizontal state.

The guide vane 45 is installed inside the discharge duct 42 so as to be disposed downstream of the orifice portion 44. Specifically, the guide vane 45 is installed between the orifice portion 44 and the combustion gas measuring device 43.

This guide vane 45 guides the combustion gas accelerated in the orifice portion 44 so that it is maintained uniformly throughout the exhaust duct 42 and the discharge direction is maintained in a horizontal direction, that is, maintaining a straight line.

According to the 10 MW large scale calorimeter according to the conventional technology, the orifice portion and guide vane are sequentially installed inside the exhaust duct along the direction of movement of the combustion gas, thereby controlling the discharge speed of the combustion gas exiting through the exhaust duct. It can be raised and moved in a uniformly distributed state in the horizontal direction.

Accordingly, uniform measurement data can be obtained from the combustion gas measurement device regardless of the collection location or measurement location, thereby increasing the reliability of the measurement data.

Meanwhile, when a fire initially breaks out in a structure or building, the scale is small and can be easily extinguished, but if it continues to spread, it develops into a large fire that is difficult to extinguish.

Many techniques have been developed to extinguish these fires in their early stages. For example, firefighting facilities installed in structures are intended to detect and extinguish fires in the early stages of fire occurrence.

However, there is relatively little technology to prevent the spread of fire. The technology to prevent the spread of fire is to divide the space of the structure into members that can prevent the spread of fire.

Here, the member is a measurement object to prevent the spread of fire in the horizontal or vertical direction and may be an insulating material, and this member forms a partition formed by the structure of the wall or floor plate.

In addition, since passages formed in these compartments, i.e., openings such as windows, can become major passages for fire spread, the fire spread prevention function of these openings is very important. In particular, the performance standards of these opening members must meet the “Standards for automatic fire shutters and fire doors” notified by the Ministry of Land, Transport and Maritime Affairs.

However, when performing performance tests to satisfy these performance standards, it is very dangerous for a person to directly measure the radiant heat of a member near the member. Therefore, a device that can measure radiant heat and temperature from a member at a point away from the member is needed.

Additionally, the temperature sensor may overheat due to the high temperature heat emitted from the member, making it impossible to accurately measure the temperature of the member. Therefore, a device that can prevent the temperature sensor from overheating is needed.

As mentioned above, there is a growing need for a measuring device to accurately measure the performance of members that are essential to prevent the spread of fire.

Meanwhile, as a prior art related to the above-described measuring device, Republic of Korea Patent No. 10-1274943 discloses an invention titled “Apparatus and method for measuring radiant heat flux by fire compartment”, see FIGS. 4A to 4D. It is described and is incorporated herein by reference and constitutes a part of the present invention.

FIGS. 4A to 4D are diagrams for explaining a radiant heat flux measurement system for each fire compartment according to the prior art. FIG. 4A shows a radiant heat flux measurement system for each fire compartment, and FIG. 4B is a front view of a radiant heat flux measurement device for each fire compartment. , FIG. 4C is a diagram for specifically explaining the refrigerant flow path, and FIG. 4D is a configuration diagram for specifically explaining the cooling unit.

Referring to Figure 4a, the radiant heat flux measurement system for each fire compartment according to the prior art includes a performance measurement room 50, an analysis device 60, a measurement object 70, and a radiant heat flux measurement device 80. An experimental environment in which the heat flux measuring device 80 is used is provided.

The measurement object 70 is provided in a predetermined storage space inside the performance measurement room 50, and by artificially generating a fire in the storage space, the performance of preventing the spread of fire for the measurement object 70 is measured.

At this time, the radiant heat flux measurement device 80 for each fire section is installed at a predetermined distance away from the measurement object 70, and the radiant heat flux measurement device 80 for each fire section measures the temperature and heat flux emitted from the measurement object 70. Measure (heat release amount).

At this time, the predetermined distance means a distance at which the radiant heat flux measurement device 80 for each fire zone can measure the temperature and heat flux emitted from the measurement object 70.

The temperature and heat flux data for the measurement object 70 measured by the radiation heat flux measurement device 80 can be transmitted to a PC, which is the analysis device 60 provided at a distance, by a wireless communication module. That is, the radiation heat flux measurement device 80 and the analysis device 60 transmit and receive control commands and data through a Bluetooth module, which is a short-range wireless communication module.

The analysis device 60 may be implemented, for example, as a PC, is provided at a distance from the radiation heat flux measurement device 80, and receives measurement data transmitted wirelessly through data communication.

Because of this, the measurement object 70 can be safely measured at a distance from the measurement object 70, where high temperature heat is emitted.

Specifically, referring to FIG. 4b, the radiant heat flux measuring device 80 includes a measuring device main body 81, a measuring unit 82, a transfer unit 83, a control unit 84, a cooling unit 85, and a horizontal Includes an adjustment unit 86.

The measuring device main body 81 includes a main housing 81a and a guide housing 81b, and the main housing 81a has a hexahedral shape and has a running wheel on its lower surface for easily moving the radiant heat flux measuring device 80. 88) is prepared.

Here, the traveling wheel 88 may be made of an elastic material such as rubber to minimize shaking when moving the radiant heat flux measurement device 80 in a test site with an uneven floor surface.

Additionally, the traveling wheel 88 may be fixed to the floor by a horizontal support member 89. At this time, a control unit 84, a drive motor 83a, and a refrigerant flow path 85b are installed inside the main housing 81a, and a valve 85d is installed on its side.

Additionally, the guide housing 81b is provided in a pillar shape protruding from the upper surface of the main housing 81a. Here, the cross-sectional area of the guide housing (81b) is formed to be smaller than that of the main housing (81a) for structural stability. At this time, a measuring unit 82 and a transfer unit 83 are installed in the guide housing 81b.

This measuring device main body 81 can be moved by the traveling wheel 88 and the transfer handle 87, and can be fixed by the horizontal support member 89.

Referring to FIG. 4B, in the radiant heat flux measurement device 80, the transfer unit 83 is installed in the measurement device main body 81 to move the measurement unit 82. That is, the transfer unit 83 is provided in the measuring device main body 81 and may include a drive motor 83a, a pulley, and a transfer member 83b to move the measuring unit 82 up and down.

The drive motor 83a is installed in the main housing 81a and can be driven to selectively move the transfer member 83b clockwise or counterclockwise.

The transfer member 83b is installed in the height direction of the guide housing 81b and supports the measurement unit 82. Here, the transfer member 83b is connected to the drive motor 83a by a pulley and guides the measuring unit 82 to move up and down along one surface of the guide housing 81b.

Specifically, one end 82e of the measuring unit 82 is connected to the transfer member 83b, and accordingly, when the drive motor 83a rotates clockwise, the transfer member 83b is transferred clockwise, In response, the measuring unit 82 is moved downward. On the other hand, when the drive motor 83a rotates counterclockwise, the transfer member 83b is also transferred counterclockwise and the measuring unit 82 moves upward.

In the case of the radiant heat flux measurement device 80 according to the prior art, various parts of the measurement object 70 can be measured. Specifically, as the measurement unit 82 moves up and down along the guide housing 81b, the fire compartments F1, F2, F3, ... of the measurement object 70 are moved. , the temperature and heat flux emitted at the Fn point can be accurately measured.

Referring to FIG. 4b, the measurement unit 82 is installed in the guide housing 81b of the measurement device main body 81 and measures the radiant heat flux emitted from the measurement object 70. That is, the measurement unit 82 measures the radiant heat flux emitted from the measurement object 70 while moving to the measurement point of the measurement object 70 in the vertical direction by the transfer unit 83.

The measurement unit 82 may include a movable block 82a, a temperature sensor 82b, a heat flux sensor 82c, and a laser pointer 82d to measure the temperature and heat flux emitted from the measurement object 70. there is.

A temperature sensor 82b, a heat flux sensor 82c, and a laser pointer 82d are installed on the movable block 82a, and one end 82e of the movable block is connected to the transfer member 83b to form a guide housing 81b. It moves up and down along the .

A temperature sensor (Thermocouple: 82b) is installed on the movable block (82a) to measure the temperature emitted from the measurement object (70). Here, the temperature sensor 82b can measure the temperature in the range of 0 to 1000°C.

A heat flux sensor (Heat Flux Meter: 82c) is installed in the movable block (82a) and measures the heat flux emitted from the measurement object (70).

The suitability of the measurement object 70 to prevent the spread of fire can be confirmed through the data measured by the temperature sensor 82b and the heat flux sensor 82c. Accordingly, it is possible to determine a high-quality measurement object 70 to prevent the spread of fire.

The laser pointer 82d is installed on the movable block 82a and radiates a laser beam to the measurement object 70 to mark the points measured by the temperature sensor 82b and the heat flux sensor 82c. Accordingly, by measuring and confirming the characteristics at the exact point of the measurement object 70, the fire spread prevention performance of the measurement object 70 can be determined.

As shown in FIGS. 4C and 4D, the cooling unit 85 is provided to prevent the heat flux sensor 82c from malfunctioning due to overheating, and includes a refrigerant supply unit 85a, a refrigerant flow path 85b, and a pump ( 85c) and valve 85d.

The refrigerant supply unit 85a stores refrigerant and supplies the refrigerant to the pump 85c according to a control signal from the control unit 84. Here, the refrigerant supply unit 85a may be a storage device with a certain volume, such as a tank, or may supply refrigerant without a separate storage device, such as a water supply, or room temperature water may be used as the refrigerant.

The refrigerant flow path 85b is housed and installed in the measuring device main body 81 to guide the movement of the refrigerant. Specifically, the refrigerant flow path 85b is installed to pass through the heat flux sensor 85c to prevent the heat flux sensor 85c from overheating and malfunctioning when measuring the heat flux emitted from the measurement object 70. Because of this, the heat flux and performance emitted from the measurement object 70 can be accurately measured.

The pump 85c applies pressure to the refrigerant so that the refrigerant can move along the refrigerant flow path 85b. At this time, the conditions of the pump 85c are not particularly limited, and any pump that can flow the refrigerant along the refrigerant passage 85b is possible.

The valve 85d is provided on the side of the main housing 81a and controls the amount of refrigerant supplied to prevent the heat flux sensor 82c from being damaged by excessive pressure. Preferably, when measuring heat flux, when supplying refrigerant, it is good to place the valve (85d) at the lowest flow position and gradually adjust the valve (85d) until the refrigerant is supplied and the appropriate flow amount is reached.

In the case of a radiant heat flux measurement device for each fire compartment according to the conventional technology, the performance of the measurement point of the measurement object can be determined for each fire compartment by measuring the radiant heat flux and air temperature from the measurement object at a certain distance away from the measurement object, Accordingly, the performance of the measurement object can be safely measured at a point away from the measurement object.

In addition, by preventing the measurement unit from overheating, the performance of the measurement object can be accurately measured, and the performance of the point of the measurement object to be measured can be measured.

However, in the case of the radiant heat flux measurement system for each fire compartment according to the prior art, a configuration capable of cooling the heat flux sensor 85c through the cooling unit 85 is disclosed as a radiant heat measurement method.

During full-scale experiments, it is impossible to maintain the room temperature water that cools the heat flux sensor exposed to the outside at a constant temperature due to seasonal (summer/winter) temperature differences.

Specifically, in the case of a radiant heat flux measurement system for each fire compartment according to the prior art, a method of circulating general room temperature water is used to maintain the temperature of the measurement unit including the heat flux sensor that is directly or indirectly exposed to the flame during the experiment and measurement process. there is. Accordingly, in the radiant heat measurement method used in full-scale fire experiments, there is a problem that it is difficult to maintain a constant temperature of the heat flux sensor because the room temperature is affected by the external seasonal temperature.

Meanwhile, Figure 5 is a diagram for explaining the radiant heat measurement method of the radiant heat measurement system according to the prior art.

Referring to Figure 5, in the case of the radiant heat measurement system 90 according to the prior art, a full-scale fire laboratory 91, a test specimen for fire testing 92, a measurement unit 93, a cooling unit 94, and a data logger ( 95) and an analysis device 96.

As shown in Figure 5. In order to water cool the radiant heat flux sensor, which is the radiant heat measurement sensor of the measurement unit 93, a room temperature water pipe (94a) is connected, and water circulation is continuously performed during the experiment time using a water tank and pump.

However, as described above, there was a problem in that freezing of room temperature water in the room temperature water pipe/water tank of the cooling unit 94 occurred due to a drop in outdoor temperature during the winter, making full-scale fire testing impossible.

In addition, there was a problem in that it was difficult to secure the reliability of the measurement data as it was impossible to maintain the room temperature of the cooling water in the room temperature water pipe/water tank of the cooling unit 94 due to the outside temperature in the summer and the flame during the experiment. Ultimately, there is a need to maintain the measurement unit at a constant temperature so that full-scale fire experiments can be performed regardless of the season.

Republic of Korea Patent No. 10-1274943 (registration date: June 10, 2013), title of invention: “Apparatus and method for measuring radiant heat flux by fire compartment” 2) Republic of Korea Patent No. 10-977617 (application date: September 7, 2009), title of invention: “Room corner combustion test measurement system” 3) Republic of Korea Patent No. 10-686374 (application date: January 22, 2005), title of invention: “Heat release rate measurement and fire evaluation element analysis system according to specimen combustion” 4) Republic of Korea Patent Publication No. 2008-33837 (publication date: April 17, 2008), title of invention: “Measurement and analysis system for combustion evaluation factors of test objects in case of fire” Republic of Korea Patent Publication No. 2012-0070087 (publication date: June 29, 2012), title of invention: “10 MW class large scale calorimeter”

The technical problem aimed at by the present invention to solve the above-described problems is that, due to the nature of full-scale fire experiments, it is impossible to maintain temperature in large external spaces, etc., and the room temperature water in the room temperature water pipe connected to the radiant heat measurement sensor increases or decreases depending on the season. The purpose is to provide a room temperature water temperature maintenance device for a radiant heat measurement sensor in a full-scale fire laboratory and a radiant heat measurement system equipped with the same, which can prevent phenomena such as freezing due to occurrence.

Another technical problem to be achieved by the present invention is to provide a radiant heat measurement sensor for a full-scale fire laboratory that does not require construction of an additional measurement system by using the same water tank used in the existing radiant heat measurement method and can easily set up a room temperature water temperature maintenance device. The purpose is to provide a room temperature water temperature maintenance device and a radiant heat measurement system equipped with the same.

As a means of achieving the above-described technical problem, the room temperature water temperature maintenance device for the radiant heat measurement sensor of a full-scale fire laboratory according to the present invention is designed to enable the radiant heat measurement sensor of the radiant heat measurement device installed in the full-scale fire laboratory to maintain a constant temperature. A room temperature water temperature maintenance device that supplies room temperature water, comprising: a water tank storing the room temperature water; a heating coil that heats room temperature water in the water tank; A refrigerant block that cools room temperature water in the water tank; a cold/temperature selection valve whose opening and closing is controlled to select either room temperature water heated by the heating coil or room temperature water cooled by the refrigerant block; and a room temperature water pipe that forms a flow path between the water tank and the radiant heat measurement sensor and guides the room temperature water to move through the radiant heat measurement sensor, wherein the water tank is divided into a heating water tank and a cooling water tank by a partition wall. A heating coil 520 is installed in the heating water tank, and a refrigerant block 540 is installed in the cooling water tank.

Here, during a winter fire test, room temperature water heated by the heating coil is supplied, and during a summer fire test, room temperature water cooled by the refrigerant block is supplied, so that the radiant heat measurement sensor can measure radiant heat while maintaining a constant temperature.

The room temperature water temperature maintenance device for a radiant heat measurement sensor in a full-scale fire laboratory according to the present invention has a first circulation system in which room temperature water heated by the heating coil circulates through the room temperature water pipe so that it can circulate to the radiant heat measurement sensor and the water tank. Pump; And it may further include a second circulation pump that circulates the room temperature water cooled by the refrigerant block through the room temperature water pipe so that it can circulate to the radiant heat measurement sensor and the water tank.

Here, the radiant heat measuring device installed in a full-scale fire laboratory may include a control unit that controls the operation of the heating coil, the first circulation pump, the second circulation pump, and the cold/temperature selection valve.

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Here, the room temperature water pipe is installed to pass through the inside of the heating water tank, so that room temperature water can be heated through a conduction/radiation method, or the room temperature water can be heated through a convection method where the room temperature water pipe does not pass through the inside of the heating water tank.

Here, the room temperature water pipe passing through the heating water tank is preferably installed as a pipe that overlaps 2 to 3 times.

Here, the room temperature water pipe is installed to pass through the inside of the cooling water tank to cool room temperature water using a conduction/radiation method, or the room temperature water is cooled through a convection method where the room temperature water pipe does not pass through the inside of the cooling water tank.

Here, the cooling water tank is preferably formed with a partition so that two to three refrigerant blocks previously cooled in the freezer can be inserted and installed.

Meanwhile, as another means of achieving the above-described technical problem, a radiant heat measurement system equipped with a room temperature water temperature maintenance device for a radiant heat measurement sensor in a full-scale fire laboratory according to the present invention is used to measure the performance of preventing the spread of fire. Test specimens for fire experiments installed in the laboratory; A radiant heat measurement device that includes a radiant heat measurement sensor and measures the radiant heat of the test specimen for fire testing; An analysis device that is located remotely from the radiant heat measurement device and analyzes the fire spread prevention characteristics and performance of the fire test specimen according to measurement data transmitted from the radiant heat measurement sensor of the radiant heat measurement device; and a room temperature water temperature maintenance device that supplies room temperature water so that the radiant heat measurement sensor of the radiant heat measurement device can maintain a constant temperature, wherein the room temperature water temperature maintenance device includes: a water tank storing the room temperature water; a heating coil that heats room temperature water in the water tank; A refrigerant block that cools room temperature water in the water tank; a cold/temperature selection valve whose opening and closing is controlled to select either room temperature water heated by the heating coil or room temperature water cooled by the refrigerant block; and a room temperature water pipe that forms a flow path between the water tank and the radiant heat measurement sensor and guides the room temperature water to move through the radiant heat measurement sensor, wherein the water tank is divided into a heating water tank and a cooling water tank by a partition wall. , a heating coil is installed in the heating water tank, and a refrigerant block is installed in the cooling water tank.

Here, the radiant heat measuring device includes a measuring device main body consisting of a main housing and a guide housing; A radiant heat measurement sensor installed to be spaced apart from the main body of the measuring device and measuring radiant heat emitted from the test specimen for fire testing; and a control unit that controls the operation of the radiant heat measurement sensor and the room temperature water temperature maintenance device, wherein the radiant heat measurement sensor and the analysis device transmit and receive control commands and data.

According to the present invention, due to the nature of a full-scale fire experiment, it is impossible to maintain the temperature in a large external space, etc., and the room temperature water in the room temperature water pipe connected to the radiant heat measurement sensor is prevented from rising in temperature depending on the season or from freezing and bursting due to temperature drop. By doing so, it is possible to prevent the full-scale fire experiment schedule from being delayed or data reliability from being reduced due to seasonal and external environmental changes.

According to the present invention, since the water tank used in the existing radiant heat measurement method is used as is, there is no need to build an additional measurement system, and a room temperature water temperature maintenance device can be easily set up.

According to the present invention, in response to the recent intensification of testing of building finishing materials on a full scale, fire tests can be smoothly performed without being affected by the season.

Figure 1 is a diagram illustrating a system for measuring heat release rate and analyzing fire evaluation factors according to the combustion of a specimen according to the prior art.
Figure 2 is a diagram for explaining a room corner combustion test measurement system according to the prior art.
Figure 3 is a schematic configuration diagram of a 10 MW large scale calorimeter according to the prior art.
Figures 4a to 4d are diagrams for explaining a radiant heat flux measurement system for each fire compartment according to the prior art.
Figure 5 is a diagram for explaining the radiant heat measurement method of the radiant heat measurement system according to the prior art.
Figure 6 is a configuration diagram of a radiant heat measurement system equipped with a room temperature water temperature maintenance device for a radiant heat measurement sensor in a full-scale fire laboratory according to an embodiment of the present invention.
Figure 7a is a photograph showing a radiant heat measuring device according to an embodiment of the present invention installed in a full-scale fire laboratory, and Figure 7b is a photograph showing a radiant heat measuring device placed on the side of a test specimen for fire testing.
Figure 8 is a diagram for specifically explaining the room temperature water flow path in the radiant heat measuring device according to an embodiment of the present invention.
Figure 9 is a diagram illustrating a heat flux meter (HEAT Flux Meter) as a radiant heat measurement sensor according to an embodiment of the present invention.
Figure 10 is a photograph illustrating the installation of a radiant heat measurement sensor according to an embodiment of the present invention.
Figure 11 is a configuration diagram of a room temperature water temperature maintenance device for a radiant heat measurement sensor in a full-scale fire laboratory according to an embodiment of the present invention.
Figure 12 is a schematic diagram showing that a room temperature water temperature maintenance device for a radiant heat measurement sensor in a full-scale fire laboratory according to an embodiment of the present invention controls the cold temperature of room temperature water by a conduction-radiation method.
Figure 13 is a schematic diagram showing that a room temperature water temperature maintenance device for a radiant heat measurement sensor in a full-scale fire laboratory according to an embodiment of the present invention controls the cold temperature of room temperature water in a convection method.

Below, with reference to the attached drawings, embodiments of the present invention will be described in detail so that those skilled in the art can easily implement the present invention. However, the present invention may be implemented in many different forms and is not limited to the embodiments described herein. In order to clearly explain the present invention in the drawings, parts that are not related to the description are omitted, and similar parts are given similar reference numerals throughout the specification.

Throughout the specification, when a part is said to “include” a certain element, this means that it may further include other elements rather than excluding other elements, unless specifically stated to the contrary. Additionally, terms such as “…unit” used in the specification refer to a unit that processes at least one function or operation, and may be implemented as hardware, software, or a combination of hardware and software.

[A radiant heat measurement system equipped with a room temperature water temperature maintenance device for a radiant heat measurement sensor in a full-scale fire laboratory]

Figure 6 is a configuration diagram of a radiant heat measurement system equipped with a room temperature water temperature maintenance device for a radiant heat measurement sensor in a full-scale fire laboratory according to an embodiment of the present invention, and Figure 7a is a full-scale radiant heat measurement device according to an embodiment of the present invention. This is a photo showing what is installed in the fire laboratory, and Figure 7b is a photo showing that the radiant heat measuring device is placed on the side of the test specimen for fire testing.

Referring to FIG. 6, the radiant heat measurement system equipped with a room temperature water temperature maintenance device for a radiant heat measurement sensor in a full-scale fire laboratory according to an embodiment of the present invention includes a full-scale fire laboratory (100), a test specimen for fire experiment (200), and radiant heat. It is comprised of a measuring device 300, an analysis device 400, and a room temperature water temperature maintenance device 500.

The test specimen 200 for fire testing is a member to check the performance of preventing the spread of fire, and is installed in the full-scale fire laboratory 100 to measure the performance of preventing the spread of fire. For example, it may be a cement wall or a steel door. It is not limited.

The radiant heat measurement device 300 includes a radiant heat measurement sensor 320, and is installed in a full-scale fire laboratory 100, as shown in FIG. 7A, and also includes a fire test specimen 200, as shown in FIG. 7B. ) is placed on the side of the fire test specimen 200 to measure the radiant heat.

The analysis device 400 is located remotely from the radiant heat measurement device 300 and prevents the spread of fire in the fire test specimen 200 according to measurement data transmitted from the radiant heat measurement sensor 320 of the radiant heat measurement device 300. Analyze characteristics and performance. For example, the analysis device 400 may be implemented on a PC, but this is not limited.

The room temperature water temperature maintenance device 500 supplies room temperature water so that the radiant heat measurement sensor 320 of the radiant heat measurement device 300 can maintain a constant temperature.

Specifically, as shown in FIG. 11, which will be described later, the room temperature water temperature maintenance device 500 includes a water tank 510 in which the room temperature water is stored; A heating coil 520 that heats room temperature water in the water tank 510; A refrigerant block 540 that cools room temperature water in the water tank 510; A cold/temperature selection valve 560 whose opening and closing is controlled to select either room temperature water heated by the heating coil 520 or room temperature water cooled by the refrigerant block 540; And it may include a room temperature water pipe 570 that forms a flow path between the water tank 510 and the radiant heat measurement sensor 320 and guides the room temperature water to move through the radiant heat measurement sensor 320.

Accordingly, the room temperature water temperature maintenance device 500 supplies room temperature water heated by the heating coil 520 during a winter fire test, and supplies room temperature water cooled by the refrigerant block 540 during a summer fire test. The radiant heat measurement sensor 320 can measure radiant heat while maintaining a constant temperature.

Meanwhile, Figure 8 is a diagram for specifically explaining the room temperature water flow path in the radiant heat measuring device according to an embodiment of the present invention.

Referring to Figure 8, the radiant heat measuring device 300 according to an embodiment of the present invention may include a radiant heat measuring device main body 310, a radiant heat measuring sensor 320, a control unit 330, and a running wheel 340. However, it is not limited to this.

Specifically, the radiant heat measuring device 300 includes a radiant heat measuring device main body 310 consisting of a main housing 310a and a guide housing 310b; A radiant heat measurement sensor 320 that is installed to be spaced apart from the measuring device main body 310 and measures radiant heat emitted from the fire test specimen 200; And it may include a control unit 330 that controls the operation of the radiant heat measurement sensor 320 and the room temperature water temperature maintenance device 500.

At this time, the radiant heat measurement sensor 320 and the analysis device 400 can transmit and receive control commands and data. In addition, the control unit 330 turns on or off the heating coil 520, the first circulation pump 530, the second circulation pump 550, and the cold/temperature selection valve 560 of the room temperature water temperature maintenance device 500. Drive can be controlled.

Meanwhile, Figure 9 is a diagram illustrating a heat flux meter as a radiant heat measurement sensor according to an embodiment of the present invention, and Figure 10 is a photograph illustrating a radiant heat measurement sensor installed according to an embodiment of the present invention. .

9 and 10, the radiant heat measurement sensor 320 according to an embodiment of the present invention may be a heat flux meter, and is installed in the radiant heat measurement device 300 to measure fire test specimen 200. ) measures the radiant heat emitted from the For example, the radiant heat measurement sensor 320 can measure radiant heat (or heat flux) in the range of 0 to 100 kW/m3.

Through the data measured by the radiant heat measurement sensor 320, the suitability of the fire test specimen 200 to prevent the spread of fire can be confirmed.

Accordingly, it is possible to determine a high-quality fire test specimen 200 to prevent the spread of fire.

However, in the case of the radiant heat measurement sensor 320, it reacts sensitively to changes in the season and external environment, and therefore, due to the nature of full-scale fire experiments, it is impossible to maintain the temperature in a large external space, and the room temperature of the room temperature water pipe connected to the radiant heat measurement sensor is It is necessary to prevent phenomenon such as freezing due to temperature rise or temperature drop depending on the season.

In the end, according to the radiant heat measurement system equipped with a room temperature water temperature maintenance device for a radiant heat measurement sensor in a full-scale fire laboratory according to an embodiment of the present invention, the full-scale fire test schedule is delayed or data reliability deteriorates due to seasonal and external environmental changes. You can prevent it from happening. In addition, in response to the recent strengthening of testing of building finishing materials on a full-scale basis, fire tests can be conducted smoothly without being affected by the season.

[Room temperature water temperature maintenance device for radiant heat measurement sensor in a full-scale fire laboratory (500)]

Figure 11 is a configuration diagram of a device for maintaining the temperature of room temperature water for a radiant heat measurement sensor in a full-scale fire laboratory according to an embodiment of the present invention, and Figure 12 is a diagram showing the temperature maintenance of room temperature water for a radiant heat measurement sensor in a full-scale fire laboratory according to an embodiment of the present invention. It is a schematic diagram showing that the device controls the cold temperature of room temperature water by conduction-radiation method, and Figure 13 shows that the room temperature water temperature maintenance device for radiant heat measurement sensor in a full-scale fire laboratory according to an embodiment of the present invention controls the cold temperature of room temperature water by convection method. This is a schematic diagram showing what to do.

11 to 13, the room temperature water temperature maintenance device 500 for a radiant heat measurement sensor in a full-scale fire laboratory according to an embodiment of the present invention is the radiant heat measurement device 300 installed in the full-scale fire laboratory 100. It is a room temperature water temperature maintenance device that supplies room temperature water so that the radiant heat measurement sensor 320 can maintain a constant temperature, including a water tank 510, a heating coil 520, a first circulation pump 530, a refrigerant block 540, and a second It is comprised of a circulation pump 550, a cold/temperature selection valve 560, and a room temperature water pipe 570.

The water tank 510 stores the room temperature water. At this time, as shown in FIGS. 12 and 13, the water tank 510 is divided into a heating water tank 511 and a cooling water tank 512 by a partition wall 541, and heating is provided in the heating water tank 511. A coil 520 may be installed, and a refrigerant block 540 may be installed in the cooling water tank 512.

The heating coil 520 heats room temperature water in the water tank 510.

The first circulation pump 530 circulates through the room temperature water pipe 570 so that room temperature water heated by the heating coil 520 can circulate to the radiant heat measurement sensor 320 and the water tank 510.

The refrigerant block 540 cools the room temperature water in the water tank 510.

The second circulation pump 550 circulates the room temperature water cooled by the refrigerant block 540 through the room temperature water pipe 570 so that it can circulate to the radiant heat measurement sensor 320 and the water tank 510.

The cold/hot selection valve 560 is controlled to open and close to select either room temperature water heated by the heating coil 520 or room temperature water cooled by the refrigerant block 540.

The room temperature water pipe 570 forms a flow path between the water tank 510 and the radiant heat measurement sensor 320, and guides the room temperature water to move through the radiant heat measurement sensor 320.

At this time, the radiant heat measuring device 300 installed in the full-scale fire laboratory 100 described above includes the heating coil 520, the first circulation pump 530, the second circulation pump 550, and the cold/hot selection valve 560. ) may include a control unit 330 that controls the operation of the device.

Accordingly, during the winter fire test, room temperature water heated by the heating coil 520 is supplied, and during the summer fire test, room temperature water cooled by the refrigerant block 540 is supplied, so that the radiant heat measurement sensor 320 is set to a certain temperature. Radiant heat can be measured while maintaining .

In other words, due to the nature of a full-scale fire experiment, it is impossible to maintain the temperature in a large external space, and the room temperature water in the room temperature water pipe 570 connected to the radiant heat measurement sensor does not rise in temperature depending on the season or freeze and burst due to a drop in temperature. By preventing this, a certain level of temperature can be maintained without being affected by the external environment or external temperature.

Specifically, as shown in FIG. 12, the room temperature water pipe 570 is installed to pass through the inside of the heating water tank 511 to heat room temperature water by conduction/radiation, or, as shown in FIG. 13, Room temperature water can be heated by a convection method in which the room temperature water pipe 570 does not pass through the inside of the heating water tank 511.

At this time, the room temperature water pipe 570 passing through the heating water tank 511 is preferably installed as a pipe that overlaps 2 to 3 times, as shown in FIG. 12 .

That is, during experiments in winter when the temperature is low, the room temperature water pipe 570 can increase the temperature of the room temperature water by passing through the heating coil 520 installed inside the heating water tank 511, and the inside of the heating coil 520 The efficiency of the heating water tank 511 can be improved by overlapping the room temperature water pipe 570 passing through 2-3 times or more.

In addition, as shown in FIG. 12, the room temperature water pipe 570 is installed to pass through the inside of the cooling water tank 512 to cool room temperature water through conduction/radiation, or, as shown in FIG. 13, Room temperature water can be cooled using a convection method in which the room temperature water pipe 570 does not pass through the cooling water tank 512 .

At this time, as shown in FIG. 12, it is preferable that a partition 542 is formed in the cooling water tank 512 so that two to three refrigerant blocks 540 previously cooled in the freezer are inserted and installed.

That is, during the summer experiment when the temperature is high, the room temperature water pipe 570 lowers the temperature of the room temperature water by inserting the refrigerant block 540, previously cooled in the freezer, into the cooling water tank 512. The cooling water tank 512 can improve the cooling efficiency of room temperature water by inserting refrigerant blocks 540 into all compartments through a configuration of 2 to 3 partitions 542.

Ultimately, according to an embodiment of the present invention, since the water tank used in the existing radiant heat measurement method is used as is, there is no need to build an additional measurement system, and a room temperature water temperature maintenance device can be easily set up. In addition, since the cold/temperature control of the room temperature water can be adjusted through the cold/temperature selection valve 560 according to the season, the room temperature water temperature maintenance device 500 for a radiant heat measurement sensor in a full-scale fire laboratory according to an embodiment of the present invention It can be used regardless of the season in which the fire experiment is conducted.

The description of the present invention described above is for illustrative purposes, and those skilled in the art will understand that the present invention can be easily modified into other specific forms without changing the technical idea or essential features of the present invention. will be. Therefore, the embodiments described above should be understood in all respects as illustrative and not restrictive. For example, each component described as single may be implemented in a distributed manner, and similarly, components described as distributed may also be implemented in a combined form.

The scope of the present invention is indicated by the claims described below rather than the detailed description above, and all changes or modified forms derived from the meaning and scope of the claims and their equivalent concepts should be construed as being included in the scope of the present invention. do.

100: Full-scale fire laboratory 200: Test specimen for fire experiment
300: Radiant heat measuring device
310: Radiant heat measuring device main body 320: Radiant heat measuring sensor
330: Control unit 340: Travel wheel
310a: main housing 310b: guide housing
400: Analysis device (PC)
500: Room temperature water temperature maintenance device
510: water tank 511: heating water tank
512: Cooling tank 520: Heating coil
541: partition wall 542: partition
530: first circulation pump 540: refrigerant block
550: second circulation pump 560: cold/hot selection valve
570: Room temperature water piping

Claims (18)

As a room temperature water temperature maintenance device that supplies room temperature water so that the radiant heat measurement sensor 320 of the radiant heat measurement device 300 installed in the full-scale fire laboratory 100 can maintain a constant temperature,
A water tank 510 storing the room temperature water; A heating coil 520 that heats room temperature water in the water tank 510; A refrigerant block 540 that cools room temperature water in the water tank 510; A cold/temperature selection valve 560 whose opening and closing is controlled to select either room temperature water heated by the heating coil 520 or room temperature water cooled by the refrigerant block 540; And a room temperature water pipe 570 that forms a flow path between the water tank 510 and the radiant heat measurement sensor 320 and guides the room temperature water to move through the radiant heat measurement sensor 320. (510) is divided into a heating water tank 511 and a cooling water tank 512 by a partition wall 541, a heating coil 520 is installed in the heating water tank 511, and a refrigerant is stored in the cooling water tank 512. A room temperature water temperature maintenance device for a radiant heat measurement sensor in a full-scale fire laboratory, characterized in that a block 540 is installed. According to paragraph 1,
During the winter fire test, room temperature water heated by the heating coil 520 is supplied, and during the summer fire test, room temperature water cooled by the refrigerant block 540 is supplied, so that the radiant heat measurement sensor 320 maintains a constant temperature. A room temperature water temperature maintenance device for a radiant heat measurement sensor in a full-scale fire laboratory, characterized by measuring radiant heat. According to paragraph 1,
A first circulation pump 530 that circulates room temperature water heated by the heating coil 520 through the room temperature water pipe 570 so that it can circulate to the radiant heat measurement sensor 320 and the water tank 510; and
A second circulation pump 550 is added to circulate the room temperature water cooled by the refrigerant block 540 through the room temperature water pipe 570 so that it can circulate to the radiant heat measurement sensor 320 and the water tank 510. A room temperature water temperature maintenance device for a radiant heat measurement sensor in a full-scale fire laboratory. According to paragraph 3,
The radiant heat measuring device 300 installed in the full-scale fire laboratory 100 operates the heating coil 520, the first circulation pump 530, the second circulation pump 550, and the cold/temperature selection valve 560. A room temperature water temperature maintenance device for a radiant heat measurement sensor in a full-scale fire laboratory including a control unit 330 for controlling. delete According to paragraph 1,
The room temperature water pipe 570 is installed to pass through the inside of the heating water tank 511 to heat room temperature water by conduction/radiation, or by a convection method where the room temperature water pipe 570 does not pass through the inside of the heating water tank 511. A room temperature water temperature maintenance device for a radiant heat measurement sensor in a full-scale fire laboratory, characterized by heating room temperature water. According to clause 6,
A room temperature water temperature maintenance device for a radiant heat measurement sensor in a full-scale fire laboratory, characterized in that the room temperature water pipe 570 passing through the heating water tank 511 is installed as an overlapping pipe 2 to 3 times. According to paragraph 1,
The room temperature water pipe 570 is installed to pass through the inside of the cooling water tank 512 to cool room temperature water using a conduction/radiation method, or a convection method where the room temperature water pipe 570 does not pass through the inside of the cooling water tank 512. A room temperature water temperature maintenance device for a radiant heat measurement sensor in a full-scale fire laboratory, characterized in that it cools room temperature water. According to clause 8,
The cooling water tank 512 is characterized in that a partition 542 is formed so that two to three refrigerant blocks 540 previously cooled in a freezer are inserted and installed. A room temperature water temperature maintaining device for a radiant heat measurement sensor in a full-scale fire laboratory. A fire test specimen (200) installed in a full-scale fire laboratory (100) to measure the performance of preventing the spread of fire;
A radiant heat measurement device 300 that includes a radiant heat measurement sensor 320 and measures the radiant heat of the fire test specimen 200;
It is located remotely from the radiant heat measurement device 300 and analyzes the fire spread prevention characteristics and performance of the fire test specimen 200 according to measurement data transmitted from the radiant heat measurement sensor 320 of the radiant heat measurement device 300. Analysis device (400); and
A room temperature water temperature maintaining device 500 that supplies room temperature water so that the radiant heat measurement sensor 320 of the radiant heat measurement device 300 can maintain a constant temperature,
The room temperature water temperature maintenance device 500 includes a water tank 510 in which the room temperature water is stored; A heating coil 520 that heats room temperature water in the water tank 510; A refrigerant block 540 that cools room temperature water in the water tank 510; A cold/temperature selection valve 560 whose opening and closing is controlled to select either room temperature water heated by the heating coil 520 or room temperature water cooled by the refrigerant block 540; And it forms a flow path between the water tank 510 and the radiant heat measurement sensor 320, and includes a room temperature water pipe 570 that guides the room temperature water to move through the radiant heat measurement sensor 320,
The water tank 510 is divided into a heating water tank 511 and a cooling water tank 512 by a partition wall 541, a heating coil 520 is installed in the heating water tank 511, and the cooling water tank 512 A radiant heat measurement system equipped with a room temperature water temperature maintenance device for a radiant heat measurement sensor in a full-scale fire laboratory, characterized in that a refrigerant block 540 is installed therein. According to clause 10,
The room temperature water temperature maintenance device 500 supplies room temperature water heated by the heating coil 520 during a winter fire test, and supplies room temperature water cooled by the refrigerant block 540 during a summer fire test to measure the radiant heat. A radiant heat measurement system equipped with a room temperature water temperature maintenance device for a radiant heat measurement sensor in a full-scale fire laboratory, characterized in that the sensor 320 measures radiant heat while maintaining a constant temperature. delete According to clause 10,
The room temperature water pipe 570 is installed to pass through the inside of the heating water tank 511 to heat room temperature water by conduction/radiation, or by a convection method where the room temperature water pipe 570 does not pass through the inside of the heating water tank 511. A radiant heat measurement system equipped with a room temperature water temperature maintenance device for a radiant heat measurement sensor in a full-scale fire laboratory, characterized by heating room temperature water. According to clause 13,
The room temperature water pipe 570 passing through the heating water tank 511 is installed as an overlapping pipe 2 to 3 times. A radiant heat measurement system equipped with a room temperature water temperature maintenance device for a radiant heat measurement sensor in a full-scale fire laboratory. According to clause 10,
The room temperature water pipe 570 is installed to pass through the inside of the cooling water tank 512 to cool room temperature water using a conduction/radiation method, or a convection method where the room temperature water pipe 570 does not pass through the inside of the cooling water tank 512. A radiant heat measurement system equipped with a room temperature water temperature maintenance device for a radiant heat measurement sensor in a full-scale fire laboratory, characterized in that it cools room temperature water. According to clause 15,
The cooling water tank 512 is a room temperature water temperature maintaining device for a radiant heat measurement sensor in a full-scale fire laboratory, characterized in that a partition 542 is formed so that 2 to 3 refrigerant blocks 540 previously cooled in the freezer are inserted and installed, respectively. Equipped with a radiant heat measurement system. The method of claim 10, wherein the room temperature water temperature maintaining device 500 is:
A first circulation pump 530 that circulates room temperature water heated by the heating coil 520 through the room temperature water pipe 570 so that it can circulate to the radiant heat measurement sensor 320 and the water tank 510; and
A second circulation pump 550 is added to circulate the room temperature water cooled by the refrigerant block 540 through the room temperature water pipe 570 so that it can circulate to the radiant heat measurement sensor 320 and the water tank 510. A radiant heat measurement system equipped with a room temperature water temperature maintenance device for a radiant heat measurement sensor in a full-scale fire laboratory. The method of claim 10, wherein the radiant heat measuring device 300,
A radiant heat measuring device body 310 consisting of a main housing 310a and a guide housing 310b; A radiant heat measurement sensor 320 that is installed to be spaced apart from the measuring device main body 310 and measures radiant heat emitted from the fire test specimen 200; And a control unit 330 that controls the operation of the radiant heat measurement sensor 320 and the room temperature water temperature maintenance device 500,
The radiant heat measurement sensor 320 and the analysis device 400 are a radiant heat measurement system equipped with a room temperature water temperature maintenance device for a radiant heat measurement sensor in a full-scale fire laboratory, wherein the radiant heat measurement sensor 320 and the analysis device 400 transmit and receive control commands and data.