JP2010121808A - Method of heating large space and heating device for the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method of heating a large space and a heating device for the same, capable of properly heating the large space by reducing energy loss. <P>SOLUTION: The device includes: a duct 3 disposed on a height position of 2,000 mm or more and 6,000 mm or less from a floor surface 8 along the circumference 7 of an inner wall surface at a perimeter part of a building 2; a warm air heater 4 for heating air and distributing the warm air to the duct 3; and a supply section 5 having a supply port at a lower section of the duct 3 and supplying the warm air immediately below. The warm air immediately after supplied from the supply port has a temperature of 40&deg;C or more and 130&deg;C or less, preferably, 80&deg;C or more and 130&deg;C or less, and is set to have a wind velocity of 0.3 m/s or more and 1.0 m/s or less at a position of 500 mm from the floor surface 8. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a heating method for a large space for heating a large space with a high ceiling, and a heating apparatus for the same.

  In general, warm air heaters, steam boilers, hot water boilers, etc. are used as heat source devices for heating large spaces with high ceilings such as pools, factories, and gymnasiums. A heater is installed, and warm air of 15 ° C. to 50 ° C. is blown from the outlet of the hot air heater from the oblique direction to the horizontal direction to heat the building.

Another example of heating the interior space of the building is to stir the warm air in the space using a fan or rectifying member so as to reduce the air warmed in the interior space from collecting on the ceiling. Some are designed to circulate warm air in the space (see, for example, Patent Document 1).
Japanese Patent Laid-Open No. 2004-19951

  However, when heating a large space, a large volume of heating area requires a large amount of heat, and a building having a large space has a large area such as a roof, walls, windows, etc., and heat loss from there is large. There is a problem that it requires a lot of energy because it is large. In particular, a cold draft phenomenon occurs in a portion facing the outside air such as a window, and there is a problem that a considerable amount of time and energy are required until the cold air stays on the floor surface and the internal space is brought to a predetermined temperature. Moreover, when the ceiling is high in a large space, there is a problem that the temperature difference between the upper and lower sides is large, and the energy loss increases as the ceiling is higher. In addition, when hot air is forcibly mixed using a fan or rectifying member, it is necessary to further control the hot air, so energy loss is large and a fan or rectifying member is required, which increases costs. There was a problem to do. In addition, when forced ventilation is performed or when convection occurs due to an increase in room temperature, there is a problem that the internal space becomes negative pressure and cold outside air flows in through gaps such as doors and windows.

  The present invention has been made in view of the above-described conventional problems, and an object of the present invention is to provide a heating method for a large space and a heating apparatus for the large space that appropriately heats the large space by reducing energy loss.

The present invention is a heating method for a large space in which a duct is disposed at a position of 2000 mm or more and 6000 mm or less in height from the floor surface along the vicinity of the inner wall surface in the perimeter portion of the building,
The air is warmed by a warm air heater and blown to the duct, the warm air is blown out from the outlet of the duct, and the temperature of the warm air is 40 ° C to 130 ° C, preferably 80 ° C or more immediately after blowing. The temperature of the hot air is set to 130 ° C. or lower and the velocity of the hot air is set to 0.3 m / s or more and 1.0 m / s or less at a position 500 mm from the floor surface, and the warm air reaches the floor surface to use indoor convection. The method for heating a large space, characterized by flowing from the periphery of the building to the center.

The present invention is a duct arranged at a height of 2000 mm or more and 6000 mm or less from the floor surface along the vicinity of the inner wall surface in the perimeter portion of the building,
A hot air heater that blows air into the duct with warm air;
A blowout part that forms a blower outlet at the lower part of the duct and blows out warm air directly below,
The warm air immediately after being blown out from the air outlet is 40 ° C. or higher and 130 ° C. or lower, preferably 80 ° C. or higher and 130 ° C. or lower, and the wind speed is 0.3 m / s or higher and 1.0 m / second at a position of 500 mm from the floor. The present invention relates to a large space heating apparatus characterized by being set to be s or less.

  According to the heating method and the heating device for a large space of the present invention, hot air is blown out directly from the duct outlet, and the temperature of the hot air is 40 ° C to 130 ° C, preferably 80 ° C to 130 ° C immediately after blowing. The temperature of the warm air is set to 0.3 m / s or more and 1.0 m / s or less at a position 500 mm from the floor surface, the warm air is allowed to reach the floor surface, and further flows along the floor surface. Therefore, even if it is a large space heating area with a large volume and a large roof, wall, and window area, the rise of warmed air is suppressed and energy loss is reduced. The large space can be suitably heated. In addition, the duct is arranged along the perimeter of the inner wall at the perimeter, and the hot air is blown directly down, so that the intruding cold air from the part facing the outside air like the cold draft phenomenon is heated and shut off. Loss of time and energy until the space is brought to a desired temperature can be suppressed, and the large space can be suitably heated. In addition, warm air attracts the surrounding air downward and warms and blocks the intruding cold air due to the cold draft phenomenon, reducing the temperature difference between the top and bottom that occurs when the ceiling is high in a large space, and uses indoor convection As a result, the warm air from the perimeter portion can be drawn into the central portion, whereby the internal space can be warmed with a minimum amount of blowing power, and the large space can be suitably heated. In addition, unlike the case where the warm air is stirred using a fan or a rectifying member, there is no need to further control the warm air, so that the energy loss can be reduced and the large space can be suitably heated. Can play.

  DESCRIPTION OF EMBODIMENTS Hereinafter, an embodiment for carrying out a heating method for a large space and the heating device of the present invention will be described with reference to FIGS.

  The embodiment of the present invention is installed in a large space of a building 2 having a high ceiling 1 such as a pool, a factory, a gymnasium, and the like, and is taken in from a duct 3 arranged in the building 2 and from outside or inside the building. It has a warm air heater 4 that turns the air into warm air, and a blowout portion 5 that forms a blowout port 6 in the duct 3. Here, the high ceiling 1 means a height of 4 m or more from the floor 8 that requires a height correction coefficient when calculating the heat load during heating as the required heating capacity.

  The duct 3 is disposed around the inner wall surface vicinity 7 of the outer wall in the perimeter portion of the building 2 and is disposed at a height of 2000 mm or more and 6000 mm or less from the floor surface 8. Here, the perimeter part is the peripheral part of the wall that is in contact with the outside air in the range close to the outer wall, usually within 5 to 6 meters, with respect to the interior zone in the center of the inner space that is not affected by the outside air in the inner space. Means.

  The hot air heater 4 includes a heater main body 9 that burns fuel such as heavy oil and gas and heats air from a blower (not shown). An air intake 10 capable of taking in air is provided, a chimney 11 for discharging combustion gas is provided, and a connection duct 12 connected to the duct 3 is further provided. Here, the warm air heater 4 is not particularly limited in its heating method and structure as long as the air is warm air, and may be anything. Moreover, when arrange | positioning a pool in a building, it is preferable that the warm air heater 4 takes in air from the building exterior so that the chlorine produced from a pool may not be circulated in a building.

  The blow-out part 5 is provided with a nozzle blow-out opening 6 at the lower part of the duct 3, and is arranged at intervals of 1300 mm or more and 3000 mm along the extending direction of the duct 3, and the hot air is directly below (vertically downward in the vertical direction). ) Only to blow out. Here, as for the nozzle outlet 6, the arrangement interval and the size of the opening are particularly limited as long as the hot air is in the following condition and there is no gap of the hot air in the direction of the inner wall surface periphery 7. is not.

  Hereinafter, the effect | action of the embodiment which implements the heating method and heating apparatus of the large space of this invention is demonstrated.

  When heating a large space of the building 2 with a high ceiling 1, air taken from the outside or inside of the building is heated by a hot air heater 4 and blown to the duct 3, and the air is discharged from the outlet 6 of the duct 3. Blows the wind straight down. At this time, the temperature of the hot air is 40 ° C. or higher and 130 ° C. or lower, preferably 80 ° C. or higher and 130 ° C. or lower immediately after blowing (approximately 90 ° C. in FIG. 3), and the human height position (400 mm to 1900 mm). It is 30 degreeC or more and 50 degrees C or less. The wind speed of the warm air is 0.3 m / s or more and 1.0 m / s or less at a position 500 mm from the floor surface 8.

  Next, as shown in FIG. 4, the hot air blown directly down from the air outlet 6 of the duct 3 warms and blocks the intruding outside air (cold air) caused by cold drafts and gap air, and attracts surrounding air. While mixing in the internal space, it goes straight down, reaches the floor surface 8 and further flows along the floor surface 8 due to the Coanda effect. The warm air flows from the periphery of the interior space toward the center, and warms the entire interior space at the center position.

As a result, in buildings with a high ceiling 1, the temperature difference between the top and bottom (from the floor to a point of 6 m in height) is set to Δ5 ° C or less, as shown in FIG. It was revealed that the running cost and CO ₂ were reduced by about 20% to 40%.

  Here, when the wind speed of the warm air is less than 0.3 m / s at a position 500 mm from the floor surface 8, the warm air does not reach the floor surface 8 as shown in FIG. As the temperature goes to 1, the penetration of cold air due to cold drafts and gaps increases, causing convection in the internal space and increasing the temperature difference between the upper and lower sides. In FIG. 6, the heat transfer loss arrow h <b> 1 indicates that the temperature difference between the upper and lower sides increases and the heat transfer loss from the roof surface increases as compared to the heat transfer loss h <b> 0 of FIG. 4.

  On the other hand, when the wind speed of warm air is greater than 1.0 m / s at a position 500 mm from the floor 8, the warm air is struck against the floor 8 and bounces as shown in FIG. Heading to 1, convection occurs in the internal space, and the temperature difference between the top and bottom increases. In FIG. 7, the heat transfer loss arrow h <b> 2 indicates that the temperature difference between the upper and lower sides increases and the heat transfer loss from the roof surface increases as compared to the heat transfer loss h <b> 0 of FIG. 4 as in FIG. 6. ing. Moreover, when the temperature of the warm air immediately after blowing is less than 40 ° C., the temperature is lowered at the height of the person, and there is a problem that it takes a long time to perform heating to a desired temperature. .

  Thus, according to the heating method of a large space and the heating apparatus of the embodiment, the warm air is blown out directly from the outlet 6 of the duct 3, and the temperature of the hot air is 40 ° C. or more and 130 ° C. or less immediately after blowing, preferably Is 80 ° C. or higher and 130 ° C. or lower, and the temperature of the warm air is set to 0.3 m / s or more and 1.0 m / s or less at a position of 500 mm from the floor surface 8 so that the warm air reaches the floor surface 8 and further the floor surface. 8 and the surrounding air is drawn downward, so that even if it is a large space and large volume heating area and the roof, wall and window area are wide, the warmed air will rise. The large space can be suitably heated by suppressing the energy loss.

  In addition, according to the heating method and the heating device of the large space of the embodiment, the duct 3 is arranged along the inner periphery at the perimeter portion and the hot air is blown out directly below, so that it faces the outside air like a cold draft phenomenon. By heating and blocking the intruding cold air from the part, it is possible to suppress loss of time and energy until the internal space is brought to a desired temperature, and it is possible to suitably heat a large space.

  Furthermore, according to the heating method and the heating apparatus for the large space of the embodiment, the duct 3 is arranged along the inner wall periphery 7 and the entire periphery, and the outlets 6 are provided at predetermined intervals, and the hot air is provided around the inner space. Since the blow-in intruding cold air is heated and blocked from the whole, the gap through which the cold air enters the room can be reduced and the large space can be suitably heated. Further, since the duct 3 is provided only in the vicinity of the inner wall surface 7 in the perimeter portion, the conditions for warm air to be blown out can be easily uniformed and the conditions for the warm air can be set appropriately. Moreover, since the height is set to 2000 mm or more and 6000 mm or less from the floor surface 8 of the duct 3 and the air outlet 6, the condition setting of the warm air can be facilitated and the large space can be suitably heated. Here, when the height from the floor surface 8 of the duct 3 and the air outlet 6 is less than 2000 mm, there is a problem that the temperature is too high at the height position of the person, and the floor surface 8 of the duct 3 and the air outlet 6. When the height is larger than 6000 mm, there is a problem that it becomes difficult to control the wind speed at a position 500 mm from the floor 8.

  In addition, according to the heating method and the heating device of the large space of the embodiment, the warm air attracts the surrounding air downward and warms and blocks the intruding cold air due to the cold draft phenomenon, so that the ceiling 1 is high in the large space. In this case, the temperature difference between the top and bottom that occurs in the case (the ceiling 1 position is 4 m or more) can be reduced, indoor convection can be used, and warm air can be drawn into the interior, so the internal space can be warmed with a minimum of blowing power. It becomes possible and can heat a large space suitably. Further, since the temperature difference between the upper and lower sides is reduced, the height correction factor required when the height of the ceiling 1 is 4 m or more is not required, and the optimization of the required heating capacity can be made extremely easy.

  In addition, according to the heating method and the heating device of the large space of the embodiment, unlike the case of stirring the warm air using a fan or a rectifying member, it is not necessary to further control the warm air in the room. Can be reduced. Moreover, since warm air is not forcibly stirred, it is possible to prevent the sensible temperature from being lowered by the air flow in the internal space.

  In addition, it is needless to say that the method for heating a large space and the heating device of the present invention can be variously modified without departing from the gist of the present invention.

It is a whole perspective view which shows the example of a form of this invention. It is a front view which shows a warm air heater. It is a graph which shows the wind speed and temperature change of blowing warm air. It is a conceptual diagram which shows the state of implementation of the example of this invention. It is the graph which compared the temperature difference of the upper and lower in this invention and the conventional case. It is a conceptual diagram which shows the state where the wind speed of warm air is weak. It is a conceptual diagram which shows the state where the wind speed of warm air is strong.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Ceiling 2 Building 3 Duct 4 Hot air heater 5 Outlet 6 Outlet 7 Near inner wall surface 8 Floor surface

Claims (2)

A heating method for a large space in which a duct is disposed at a position of 2000 mm or more and 6000 mm or less in height from the floor along the vicinity of the inner wall surface in the perimeter part of the building,
The air is warmed by a warm air heater and blown to the duct, the warm air is blown out from the outlet of the duct, and the temperature of the warm air is 40 ° C to 130 ° C, preferably 80 ° C or more immediately after blowing. The temperature of the hot air is set to 130 ° C. or lower and the velocity of the hot air is set to 0.3 m / s or more and 1.0 m / s or less at a position 500 mm from the floor surface, and the warm air reaches the floor surface to use indoor convection. A large space heating method characterized by flowing from the perimeter of the building to the center. A duct arranged at a height of 2000 mm or more and 6000 mm or less from the floor surface along the vicinity of the inner wall surface in the perimeter portion of the building;
A hot air heater that blows air into the duct with warm air;
A blowout part that forms a blower outlet at the lower part of the duct and blows out warm air directly below,
The warm air immediately after being blown out from the air outlet is 40 ° C. or higher and 130 ° C. or lower, preferably 80 ° C. or higher and 130 ° C. or lower, and the wind speed is 0.3 m / s or higher and 1.0 m / second at a position of 500 mm from the floor. A large space heating device, which is set to be s or less.

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