JP2016070632A - In-building roof surface dew condensation prevention method - Google Patents
In-building roof surface dew condensation prevention method Download PDFInfo
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Abstract
Description
本発明は、水蒸気発生源が配設された建屋内において、水濡れ厳禁の設備等が配設された結露禁止エリアにおける屋根面の結露を防止する建屋内屋根面結露防止方法に関するものである。 The present invention relates to a method for preventing dew condensation on a roof surface in a building in which a water vapor generation source is disposed and which prevents dew condensation on the roof surface in a dew condensation-prohibited area in which facilities for which water is strictly prohibited is disposed.
気温の低い冬季や湿度の高い梅雨時期には、屋根外面や外壁面からの放射冷却により、建屋内屋根面や内壁面において結露が生じることがある。特に、建屋内に水蒸気を発生する設備が配設されている場合には、建屋内の湿度が大幅に上昇し、結露が生じやすくなる。
ここで、建屋内屋根面において結露が生じると床面に向けて水滴が落下するおそれがあるため、建屋内に電源設備等の水濡れ厳禁の設備が配設されている場合には、屋根面の結露を防止する必要が有った。
In winter when the temperature is low or in the rainy season when the humidity is high, condensation may occur on the roof or inner wall of the building due to radiation cooling from the outer surface or outer wall of the roof. In particular, when a facility for generating water vapor is provided in the building, the humidity in the building is significantly increased, and condensation tends to occur.
Here, if dew condensation occurs on the roof surface of the building, water drops may fall toward the floor surface, so if water-tight equipment such as power supply equipment is installed in the building, the roof surface It was necessary to prevent condensation.
建屋内屋根面等において結露を防止する手段としては、例えば特許文献１に示すように、屋根面や壁面に断熱材及び吸水材を配設する方法や、特許文献２に示すように建屋内の水蒸気を外部へと排気する方法等が提案されている。 As means for preventing dew condensation on the roof surface of a building, for example, as shown in Patent Document 1, a method of disposing a heat insulating material and a water absorbing material on a roof surface or a wall surface, or as shown in Patent Document 2, A method for exhausting water vapor to the outside has been proposed.
しかしながら、建屋内に水蒸気発生設備が配設されている場合には、特許文献１に示すように屋根面や壁面に断熱材及び吸水材を配設しても、結露を防止することは困難であった。
また、建屋内の容積が大きい場合には、特許文献２に示すように建屋内の水蒸気を外部へと排気するために大型の換気設備を設ける必要があり、設備コストが増加し、実現が困難であった。
However, when water vapor generating equipment is installed in the building, it is difficult to prevent condensation even if a heat insulating material and a water absorbing material are provided on the roof surface and wall surface as shown in Patent Document 1. there were.
Further, when the volume of the building is large, as shown in Patent Document 2, it is necessary to provide a large ventilation facility for exhausting the water vapor in the building to the outside, which increases the equipment cost and is difficult to realize. Met.
本発明は、前述した状況に鑑みてなされたものであって、水濡れ厳禁の設備等が配設された結露禁止エリアにおける屋根面の結露の発生を確実にかつ低コストで防止することができる建屋内屋根面結露防止方法を提供することを目的とする。 The present invention has been made in view of the above-described situation, and can reliably and inexpensively prevent the occurrence of dew condensation on the roof surface in a dew condensation-prohibited area in which facilities that are strictly prohibited from being wet are disposed. The object is to provide a method for preventing condensation on the roof surface of a building.
上記課題を解決するために、本発明者ら鋭意検討した結果、屋根面近傍の気流を制御することにより、建屋内のうち水濡れ厳禁の設備等が配設された結露禁止エリアにおける屋根面の結露を防止することが可能であるとの知見を得た。 As a result of intensive studies by the present inventors in order to solve the above-mentioned problems, by controlling the airflow in the vicinity of the roof surface, the roof surface in the dew condensation-prohibited area in which water banning facilities are arranged in the building is prohibited. The knowledge that it was possible to prevent condensation was obtained.
本発明は上述の知見に基づいてなされたものであって、本発明に係る建屋内屋根面結露防止方法は、水蒸気発生源が配設された建屋内において、結露禁止エリアにおける屋根面の結露を防止する建屋内屋根面結露防止方法であって、前記水蒸気発生源が設置された水蒸気発生エリアと前記結露禁止エリアとの間に送風設備を設置し、この送風設備によって、前記結露禁止エリアに向けて屋根面に沿って流動する第１の気流を形成するとともに、前記水蒸気発生エリア側に向けて流動する第２の気流を形成することを特徴としている。 The present invention has been made on the basis of the above-described knowledge, and the method for preventing condensation on a roof surface in a building according to the present invention is to prevent condensation on a roof surface in a dew condensation-prohibited area in a building where a water vapor generation source is disposed. A method for preventing dew condensation on a building roof surface, wherein a blower facility is installed between a water vapor generation area where the water vapor generation source is installed and the dew condensation prohibition area. And forming a first air stream that flows along the roof surface and a second air stream that flows toward the water vapor generating area.
上述の構成とされた本発明に係る建屋内屋根面結露防止方法によれば、水蒸気発生源が設置された水蒸気発生エリアと前記結露禁止エリアとの間に送風設備を設置し、この送風設備によって前記結露禁止エリアに向けて屋根面に沿って流動する第１の気流を形成しているので、結露禁止エリアの屋根面に水蒸気や湿度の高い空気が滞留することを抑制できる。また、送風設備によって前記水蒸気発生エリア側に向けて流動する第２の気流を形成しているので、水蒸気発生設備から発生した水蒸気が結露禁止エリアへと大量に流れ込むことを抑制できる。
以上により、大型設備を用いることなく、結露禁止エリアにおける屋根面の結露を防止することが可能となる。
According to the indoor roof surface condensation prevention method according to the present invention configured as described above, a blower facility is installed between the water vapor generation area where the water vapor generation source is installed and the dew condensation prohibition area. Since the 1st airflow which flows along a roof surface toward the said dew condensation prohibition area is formed, it can suppress that water vapor | steam and air with high humidity remain on the roof surface of a dew condensation prohibition area. Moreover, since the 2nd airflow which flows toward the said water vapor generation area side is formed with the ventilation equipment, it can suppress that the water vapor | steam generated from the water vapor generation equipment flows into a dew condensation prohibition area in large quantities.
As described above, it is possible to prevent dew condensation on the roof surface in the dew condensation prohibited area without using a large facility.
ここで、本発明の建屋内屋根面結露防止方法においては、前記水蒸気発生エリアと前記結露禁止エリアとの境界のうち前記建屋の幅方向中央部において前記第１の気流を形成し、前記水蒸気発生エリアと前記結露禁止エリアとの境界のうち前記建屋の幅方向端部において前記第２の気流を形成する構成としてもよい。
この場合、前記水蒸気発生エリアと前記結露禁止エリアとの境界のうち前記建屋の幅方向中央部において前記第１の気流を形成することにより、結露禁止エリアの屋根面における空気の滞留を十分に抑制することができる。また、前記水蒸気発生エリアと前記結露禁止エリアとの境界のうち前記建屋の幅方向端部において前記第２の気流を形成することにより、建屋の幅方向端部に沿って水蒸気が結露禁止エリア側へ流れ込んでくることを抑制できる。
また、前記水蒸気発生エリアと前記結露禁止エリアとの境界に送風設備を一列配置し、この送風設備によって第１の気流と第２の気流を上述のように形成することで、結露禁止エリアにおける結露の発生を防止することが可能となり、設備コストを大幅に削減することができる。
Here, in the indoor roof surface dew condensation prevention method of the present invention, the first air stream is formed in the center in the width direction of the building in the boundary between the water vapor generation area and the dew condensation prohibition area, and the water vapor generation is performed. It is good also as a structure which forms a said 2nd airflow in the width direction edge part of the said building among the boundaries of an area and the said dew condensation prohibition area.
In this case, the formation of the first air flow in the center in the width direction of the building in the boundary between the water vapor generation area and the dew condensation prohibition area sufficiently suppresses the retention of air on the roof surface of the dew condensation prohibition area. can do. Further, by forming the second air flow at the width direction end of the building in the boundary between the water vapor generation area and the dew condensation prohibited area, the water vapor is dew condensation prohibited area side along the width direction end of the building. Can be prevented from flowing into
Further, a row of air blowing equipment is arranged at the boundary between the water vapor generation area and the dew condensation prohibition area, and the first air flow and the second air flow are formed as described above by the air blow equipment, so that dew condensation in the dew condensation prohibition area is achieved. Can be prevented, and the equipment cost can be greatly reduced.
また、本発明の建屋内屋根面結露防止方法においては、前記送風設備は、前記建屋の床面から前記屋根面に向けて気流を形成し、前記気流を前記屋根面に衝突させることにより、前記第１の気流と前記第２の気流とを形成する構成としてもよい。
この場合、送風設備を建屋の床面側に設置することができ、送風設備の設置コストやメンテナンスコストを大幅に削減することができる。また、天井クレーン等が配置された建屋においても、比較的容易に送風設備を設置して、第１の気流及び第２の気流を形成することが可能となる。
Further, in the building roof surface condensation prevention method of the present invention, the blower equipment forms an air flow from the floor surface of the building toward the roof surface, and collides the air flow with the roof surface, It is good also as a structure which forms a 1st airflow and a said 2nd airflow.
In this case, the blower facility can be installed on the floor side of the building, and the installation cost and maintenance cost of the blower facility can be greatly reduced. In addition, even in a building where an overhead crane or the like is arranged, it is possible to install a blower facility relatively easily to form the first airflow and the second airflow.
さらに、本発明の建屋内屋根面結露防止方法においては、前記送風設備によって加熱空気を送風することにより、前記第１の気流を形成することが好ましい。
この場合、結露禁止エリアの屋根面に加熱空気が流動することになり、結露禁止エリアの屋根面近傍における温度低下及び湿度上昇を抑制でき、結露を確実に防止することが可能となる。
Furthermore, in the building roof surface dew condensation prevention method of the present invention, it is preferable to form the first air stream by blowing heated air with the blowing equipment.
In this case, the heated air flows on the roof surface in the dew condensation-prohibited area, so that temperature drop and humidity increase in the vicinity of the roof surface in the dew condensation-prohibited area can be suppressed, and dew condensation can be reliably prevented.
本発明によれば、水濡れ厳禁の設備等が配設された結露禁止エリアにおける屋根面の結露の発生を確実にかつ低コストで防止することができる建屋内屋根面結露防止方法を提供することができる。 According to the present invention, there is provided a building roof surface condensation prevention method capable of reliably and inexpensively preventing the occurrence of condensation on a roof surface in a condensation prohibited area where water-tight equipment and the like are disposed. Can do.
以下に、本発明の一実施形態である建屋内屋根面結露防止方法について、添付した図面を参照して説明する。なお、本発明は、以下の実施形態に限定されるものではない。 Hereinafter, a method for preventing dew condensation on a building roof according to an embodiment of the present invention will be described with reference to the accompanying drawings. In addition, this invention is not limited to the following embodiment.
本実施形態である建屋内屋根面結露防止方法が適用される建屋１には、図１及び図２に示すように、水蒸気発生源としての圧延機１１が配設された水蒸気発生エリア１０と、水濡れ厳禁である電源設備２１が配設された結露禁止エリア２０と、が設けられている。本実施形態では、図２に示すように、上面視して矩形状をなす建屋１の右側の領域が水蒸気発生エリア１０とされ、建屋１の左側の領域が結露禁止エリア２０とされており、その境界が建屋１の幅方向（図２において上下方向）に延在している。 In the building 1 to which the indoor roof surface condensation prevention method according to the present embodiment is applied, as shown in FIGS. 1 and 2, a water vapor generation area 10 in which a rolling mill 11 as a water vapor generation source is disposed, And a dew condensation prohibition area 20 provided with a power supply facility 21 that is strictly prohibited from being wet with water. In the present embodiment, as shown in FIG. 2, the area on the right side of the building 1 that is rectangular when viewed from the top is the water vapor generation area 10, and the area on the left side of the building 1 is the condensation prevention area 20. The boundary extends in the width direction of the building 1 (vertical direction in FIG. 2).
そして、水蒸気発生エリア１０と結露禁止エリア２０との境界には、送風設備３０が配設されている。本実施形態では、図１及び図２に示すように、建屋１の床面２に１台の送風設備３０が配設されている。なお、本実施形態においては、送風設備３０は、他の設備によって加熱された加熱空気を送風する構成とされている。
この送風設備３０は、図２に示すように、水蒸気発生エリア１０と結露禁止エリア２０との境界に沿って（建屋１の幅方向に沿って）複数の送風口３１が一列に並ぶように設けられており、本実施形態では４つの送風口３１（第１送風口３１ａ、第２送風口３１ｂ、第３送風口３１ｃ、第４送風口３１ｄ）が配設されている。
A blower facility 30 is disposed at the boundary between the water vapor generation area 10 and the dew condensation prohibition area 20. In the present embodiment, as shown in FIGS. 1 and 2, one blower facility 30 is disposed on the floor surface 2 of the building 1. In addition, in this embodiment, the ventilation equipment 30 is set as the structure which ventilates the heating air heated by the other equipment.
As shown in FIG. 2, the blower facility 30 is provided such that a plurality of blower openings 31 are arranged in a line along the boundary between the water vapor generation area 10 and the dew condensation-prohibited area 20 (along the width direction of the building 1). In this embodiment, four air outlets 31 (first air outlet 31a, second air outlet 31b, third air outlet 31c, and fourth air outlet 31d) are provided.
４つの送風口３１のうち建屋１の幅方向中央に位置する第２送風口３１ｂ、第３送風口３１ｃには、結露禁止エリア２０側に向かって送風するようにフィンパネルが配設されており、建屋１の幅方向端部に位置する第１送風口３１ａ、第４送風口３１ｄには、水蒸気発生エリア１０側に向かって送風するようにフィンパネルが配設されている。 The fin panel is arrange | positioned so that the 2nd ventilation port 31b and the 3rd ventilation port 31c which are located in the center of the width direction of the building 1 among the four ventilation ports 31 may blow toward the dew condensation prevention area 20 side. The fin panel is arrange | positioned so that it may ventilate toward the water vapor generation area 10 side in the 1st ventilation port 31a and the 4th ventilation port 31d located in the width direction edge part of the building 1. FIG.
本実施形態では、図１に示すように、建屋１の幅方向中央に位置する第２送風口３１ｂ、第３送風口３１ｃにおいては、フィンパネルのフィン角度により、鉛直方向（鉛直線Ｖ）に対して角度θ１だけ結露禁止エリア２０側に傾いた方向に向けて加熱空気を送風している。
また、建屋１の幅方向端部に位置する第１送風口３１ａ、第４送風口３１ｄにおいては、フィンパネルのフィン角度により、鉛直方向（鉛直線Ｖ）に対して角度θ２だけ水蒸気発生エリア１０側に傾いた方向に向けて加熱空気を送風している。
In this embodiment, as shown in FIG. 1, in the 2nd ventilation opening 31b and the 3rd ventilation opening 31c located in the center of the width direction of the building 1, according to the fin angle of a fin panel, it is vertical (vertical line V). On the other hand, the heated air is blown in the direction inclined by the angle θ1 toward the dew condensation prohibition area 20 side.
Moreover, in the 1st ventilation port 31a and the 4th ventilation port 31d located in the width direction edge part of the building 1, it is the water vapor generating area 10 only by angle (theta) 2 with respect to the perpendicular direction (vertical line V) by the fin angle of a fin panel. The heated air is blown in the direction inclined to the side.
ここで、水濡れ厳禁である電源設備２１の送風口３１側の端部の鉛直方向の延長線Ｌ１と建屋１の屋根面３との交点と送風口３１とを結んだ直線の鉛直方向に対する角度をαとした場合に、角度θ１は、α−１５°≦θ１≦α＋１５°の範囲内とすることが好ましく、本実施形態では２５°≦θ１≦５５°の範囲内とされている。
また、水蒸気発生源である圧延機１１の送風口３１側の端部の鉛直方向の延長線Ｌ２と建屋１の屋根面３との交点と送風口３１とを結んだ直線の鉛直方向に対する角度を−βとした場合に、角度θ２は、−β−１５°≦θ２≦−β＋１５°の範囲内とすることが好ましく、本実施形態では−４０°≦θ２≦―１０°の範囲内とされている。
なお、図１では、鉛直方向上方を向く基準線（鉛直線Ｖ）に対して反時計回りの角度を正、時計回りの角度を負として表記した。
Here, the angle with respect to the vertical direction of the straight line connecting the intersection of the vertical extension line L1 of the end of the power supply facility 21 on the air outlet 31 side of the power supply facility 21 and the roof surface 3 of the building 1 and the air outlet 31 that is strictly prohibited from being wet with water. Is preferably in the range of α−15 ° ≦ θ1 ≦ α + 15 °, and in this embodiment, the angle θ1 is in the range of 25 ° ≦ θ1 ≦ 55 °.
Moreover, the angle with respect to the perpendicular direction of the straight line which connected the intersection of the vertical extension line L2 of the edge part by the side of the ventilation opening 31 of the rolling mill 11 which is a water vapor generation source, and the roof surface 3 of the building 1, and the ventilation opening 31 is set. In the case of −β, the angle θ2 is preferably in the range of −β−15 ° ≦ θ2 ≦ −β + 15 °, and in the present embodiment, in the range of −40 ° ≦ θ2 ≦ −10 °. Yes.
In FIG. 1, the counterclockwise angle with respect to the reference line (vertical line V) facing upward in the vertical direction is represented as positive and the clockwise angle is represented as negative.
次に、上述した構成の建屋１における結露防止方法について説明する。
図１に示すように、水蒸気発生エリア１０と結露禁止エリア２０との境界に配設された送風設備３０の４つの送風口３１のうち建屋１の幅方向中央に位置する第２送風口３１ｂ、第３送風口３１ｃから、結露禁止エリア２０側に向かって送風し、屋根面３に気流を衝突させることによって、結露禁止エリア２０における屋根面３に沿って流動する第１の気流４１を形成する。
Next, a method for preventing condensation in the building 1 having the above-described configuration will be described.
As shown in FIG. 1, a second air outlet 31b located at the center in the width direction of the building 1 among the four air outlets 31 of the air blowing facility 30 disposed at the boundary between the water vapor generation area 10 and the dew condensation prohibition area 20, The first air flow 41 that flows along the roof surface 3 in the dew condensation prohibition area 20 is formed by blowing air from the third air blowing port 31 c toward the dew condensation prohibition area 20 side and causing the air flow to collide with the roof surface 3. .
一方、水蒸気発生エリア１０と結露禁止エリア２０との境界に配設された送風設備３０の４つの送風口３１のうち建屋１の幅方向端部に位置する第１送風口３１ａ、第４送風口３１ｄから、水蒸気発生エリア１０側に向かって送風し、屋根面３に気流を衝突させることによって、屋根面３に沿って水蒸気発生エリア１０側に向かって流動する第２の気流４２を形成する。この第２の気流４２により、水蒸気発生エリア１０から結露禁止エリア２０への水蒸気の混入が抑制される。 On the other hand, the first blower port 31a and the fourth blower port located at the end in the width direction of the building 1 among the four blower ports 31 of the blower facility 30 disposed at the boundary between the water vapor generation area 10 and the dew condensation prohibition area 20. By blowing air toward the water vapor generation area 10 side from 31d and causing the air flow to collide with the roof surface 3, a second air flow 42 that flows toward the water vapor generation area 10 side along the roof surface 3 is formed. This second air flow 42 suppresses the mixing of water vapor from the water vapor generation area 10 into the dew condensation prohibition area 20.
ここで、第１の気流４１により、図１及び図２に示すように、結露禁止エリア２０の屋根面３周辺の空気が撹拌されることになる。具体的には、図２に示すように、建屋１の幅方向中央部に位置する第２送風口３１ｂ、第３送風口３１ｃからの送風によって形成された第１の気流４１は、建屋１の端壁面４に衝突して建屋１の幅方向に流れ、さらに建屋１の側壁面５に沿って水蒸気発生エリア１０側へと流れる。この側壁面５に沿った気流は、第２の気流４２とともに水蒸気発生エリア１０側へと放出される。このような気流制御により、結露禁止エリア２０の屋根面３に水蒸気や湿度の高い空気が滞留することを抑制し、結露の発生を防止している。 Here, as shown in FIGS. 1 and 2, the air around the roof surface 3 in the dew condensation prohibition area 20 is agitated by the first air flow 41. Specifically, as shown in FIG. 2, the first airflow 41 formed by blowing air from the second air outlet 31 b and the third air outlet 31 c located in the center in the width direction of the building 1 It collides with the end wall surface 4 and flows in the width direction of the building 1, and further flows along the side wall surface 5 of the building 1 toward the water vapor generation area 10. The airflow along the side wall surface 5 is discharged to the water vapor generation area 10 side together with the second airflow 42. By such airflow control, it is possible to suppress the accumulation of water vapor or high humidity on the roof surface 3 of the dew condensation prohibition area 20 to prevent the occurrence of dew condensation.
なお、送風設備３０の４つの送風口３１のうち建屋１の幅方向中央に位置する第２送風口３１ｂ、第３送風口３１ｃからの送風量Ｖ１は、屋根面３に沿った第一の気流４１の流速が０．５ｍ／ｓ以上となるように設定されている。
送風設備３０の４つの送風口３１のうち建屋１の幅方向端部に位置する第１送風口３１ａ、第４送風口３１ｄからの送風量Ｖ２は、第２送風口３１ｂ、第３送風口３１ｃからの送風量Ｖ１と同じ送風量となるように設定されている。
In addition, the ventilation volume V1 from the 2nd ventilation opening 31b located in the center of the width direction of the building 1 among the four ventilation openings 31 of the ventilation equipment 30 and the 3rd ventilation opening 31c is the 1st airflow along the roof surface 3. The flow velocity of 41 is set to be 0.5 m / s or more.
Of the four air outlets 31 of the air blowing facility 30, the air volume V2 from the first air outlet 31a and the fourth air outlet 31d located at the end in the width direction of the building 1 is the second air outlet 31b and the third air outlet 31c. Is set to be the same as the blowing amount V1.
以上のような構成とされた本実施形態である建屋内屋根面結露防止方法によれば、水蒸気発生源である圧延機１１が設置された水蒸気発生エリア１０と、水濡れ厳禁の電源設備２１が配設された結露禁止エリア２０との境界に送風設備３０を設置しており、この送風設備３０から送風することで、結露禁止エリア２０における屋根面３に沿って流動する第１の気流４１と、水蒸気発生エリア１０側に向かって流動する第２の気流４２を形成しているので、結露禁止エリア２０への水蒸気の混入が抑制されるとともに、第１の気流４１によって結露禁止エリア２０の屋根面近傍の空気が撹拌されることになり、水蒸気や湿度の高い空気が滞留することを抑制できる。これにより、結露禁止エリア２０における屋根面３の結露を防止することが可能となる。 According to the method of preventing dew condensation on the building roof surface according to the present embodiment configured as described above, the water vapor generation area 10 in which the rolling mill 11 that is a water vapor generation source is installed, and the power supply equipment 21 that is strictly prohibited from being wetted are provided. A blower facility 30 is installed at the boundary with the dew condensation prohibition area 20, and the first air flow 41 that flows along the roof surface 3 in the dew condensation prohibition area 20 by blowing air from the blower facility 30. Since the second air flow 42 that flows toward the water vapor generation area 10 is formed, mixing of water vapor into the dew condensation prohibited area 20 is suppressed, and the roof of the dew condensation prohibited area 20 is formed by the first air flow 41. The air in the vicinity of the surface is agitated, and it is possible to suppress the retention of water vapor and high humidity air. Thereby, it becomes possible to prevent the condensation of the roof surface 3 in the dew condensation prohibition area 20.
また、本実施形態においては、送風設備３０が水蒸気発生エリア１０と結露禁止エリア２０との境界に沿って（建屋１の幅方向に沿って）一列に並ぶように設けられた複数の送風口３１を有しており、建屋１の幅方向中央に位置する第２送風口３１ｂ、第３送風口３１ｃに結露禁止エリア２０側に向かって送風するようにフィンパネルが配設され、建屋１の幅方向端部に位置する第１送風口３１ａ、第４送風口３１ｄに水蒸気発生エリア１０側に向かって送風するようにフィンパネルが配設されているので、建屋１の幅方向中央部において第１の気流４１を形成することができ、結露禁止エリア２０の屋根面３における空気の滞留を十分に抑制することができる。また、建屋１の幅方向端部において第２の気流４２を形成することができ、建屋１の側壁面５に沿って水蒸気が結露禁止エリア２０側へ流れ込んでくることを抑制できる。
さらに、本実施形態においては、１台の送風設備３０を用いて４つの送風口３１から送風しており、それぞれの送風口３１に気流を制御するフィンパネルが配設されているので、１台の送風設備３０によって第１の気流４１と第２の気流４２を上述のように形成することが可能となり、結露防止に掛かる設備コストを大幅に削減することができる。
Moreover, in this embodiment, the several ventilation port 31 provided so that the ventilation equipment 30 may be located in a line along the boundary of the water vapor generation area 10 and the dew condensation prohibition area 20 (along the width direction of the building 1). The fin panel is disposed so that the second air outlet 31b and the third air outlet 31c located in the center of the building 1 in the width direction of the building 1 are blown toward the dew condensation prevention area 20 side. Since the fin panel is arrange | positioned so that it may ventilate toward the water vapor generation area 10 side in the 1st ventilation port 31a located in a direction edge part, and the 4th ventilation port 31d, in the width direction center part of the building 1, it is 1st. The air flow 41 can be formed, and the stagnation of air on the roof surface 3 of the dew condensation prohibition area 20 can be sufficiently suppressed. Moreover, the 2nd airflow 42 can be formed in the width direction edge part of the building 1, and it can suppress that water vapor | steam flows into the dew condensation prohibition area 20 side along the side wall surface 5 of the building 1. FIG.
Further, in the present embodiment, air is blown from the four air outlets 31 using one air blowing facility 30, and each air outlet 31 is provided with a fin panel for controlling the air flow. The first air flow 41 and the second air flow 42 can be formed as described above by the blower facility 30, and the facility cost for preventing condensation can be significantly reduced.
また、本実施形態においては、送風設備３０が床面２に配設されており、建屋１の床面２から屋根面３に向けて気流を形成し、この気流を屋根面３に衝突させることにより、第１の気流４１と第２の気流４２とを形成しているので、送風設備３０の設置コストやメンテナンスコストを大幅に削減することができる。また、天井クレーン等が配置された建屋１においても、簡単に送風設備３０を設置して、第１の気流４１及び第２の気流４２を形成することが可能となる。 Moreover, in this embodiment, the ventilation equipment 30 is arrange | positioned at the floor surface 2, forms an air current from the floor surface 2 of the building 1 toward the roof surface 3, and makes this air current collide with the roof surface 3. Thereby, since the 1st air current 41 and the 2nd air current 42 are formed, the installation cost and maintenance cost of the ventilation equipment 30 can be reduced significantly. Moreover, also in the building 1 in which an overhead crane or the like is arranged, it is possible to easily install the blower facility 30 and form the first air flow 41 and the second air flow 42.
さらに、本実施形態においては、送風設備３０によって加熱空気を送風することにより、第１の気流４１を形成する構成としているので、結露禁止エリア２０の屋根面３に加熱空気が流動することになり、結露禁止エリア２０の屋根面３近傍における温度低下及び湿度上昇を抑制でき、結露を確実に防止することが可能となる。 Furthermore, in this embodiment, since it is set as the structure which forms the 1st airflow 41 by blowing heated air with the ventilation equipment 30, heated air will flow to the roof surface 3 of the dew condensation prohibition area 20. In addition, it is possible to suppress a decrease in temperature and an increase in humidity in the vicinity of the roof surface 3 in the dew condensation prohibition area 20, and it is possible to reliably prevent dew condensation.
また、本実施形態においては、建屋１の幅方向中央に位置する第２送風口３１ｂ、第３送風口３１ｃから鉛直方向に対して角度θ１だけ結露禁止エリア２０側に傾いた方向に向けて送風しており、水濡れ厳禁である電源設備２１の送風口３１側の端部の鉛直方向の延長線Ｌ２と建屋１の屋根面３との交点と送風口３１とを結んだ直線の鉛直方向に対する角度をαとした場合に、角度θ１がα−１５°≦θ１≦α＋１５°の範囲内とされ、具体的には２５°≦θ１≦５５°の範囲内とされているので、第１の気流４１を確実に形成することができる。 Further, in the present embodiment, air is blown from the second air blowing port 31b and the third air blowing port 31c located in the center in the width direction of the building 1 in a direction inclined to the dew condensation prevention area 20 side by an angle θ1 with respect to the vertical direction. In the vertical direction of the straight line connecting the intersection of the vertical extension line L2 of the air outlet 31 side of the power supply facility 21 and the roof surface 3 of the building 1 and the air outlet 31 that is strictly prohibited from being wet with water. When the angle is α, the angle θ1 is in the range of α−15 ° ≦ θ1 ≦ α + 15 °, specifically, in the range of 25 ° ≦ θ1 ≦ 55 °. 41 can be formed reliably.
さらに、本実施形態においては、建屋１の幅方向端部に位置する第１送風口３１ａ、第４送風口３１ｄから鉛直方向に対して角度θ２だけ水蒸気発生エリア１０側に傾いた方向に向けて送風しており、水蒸気発生源である圧延機１１の送風口３１側の端部の鉛直方向の延長線Ｌ１と建屋１の屋根面３との交点と送風口３１とを結んだ直線の鉛直方向に対する角度を−βとした場合に、角度θ２が−β−１５°≦θ２≦−β＋１５°の範囲内とすることとされ、本実施形態では−４０°≦θ２≦−１０°の範囲内とされているので、第２の気流４２を確実に形成することができる。 Furthermore, in the present embodiment, the first blower port 31a and the fourth blower port 31d located at the width direction end of the building 1 are directed toward the water vapor generation area 10 side by an angle θ2 with respect to the vertical direction. The vertical direction of a straight line connecting the intersection of the vertical extension line L1 of the end of the rolling mill 11 serving as a water vapor generation source on the side of the air outlet 31 and the roof surface 3 of the building 1 with the air outlet 31. In this embodiment, the angle θ2 is in the range of −β−15 ° ≦ θ2 ≦ −β + 15 °, and in the present embodiment is in the range of −40 ° ≦ θ2 ≦ −10 °. Therefore, the second air flow 42 can be reliably formed.
また、本実施形態においては、建屋１の幅方向中央に位置する第２送風口３１ｂ、第３送風口３１ｃからの送風量Ｖ１が、屋根面３に沿った第一の気流４１の流速が０．５ｍ／ｓ以上となるように設定されているので、結露禁止エリア２０の屋根面３近傍の空気を確実に撹拌することができる。
さらに、本実施形態においては、建屋１の幅方向端部に位置する第１送風口３１ａ、第４送風口３１ｄからの送風量Ｖ２が、第２送風口３１ｂ、第３送風口３１ｃからの送風量Ｖ１と同じ送風量になるように設定されているので、水蒸気発生エリア１０から結露禁止エリア２０への水蒸気の混入を確実に抑制することができる。
Moreover, in this embodiment, the flow rate of the 1st airflow 41 along the roof surface 3 is 0 when the ventilation volume V1 from the 2nd ventilation opening 31b located in the center of the width direction of the building 1 and the 3rd ventilation opening 31c is 0. Since it is set to be 5 m / s or more, the air in the vicinity of the roof surface 3 of the dew condensation prohibition area 20 can be reliably stirred.
Furthermore, in this embodiment, the air volume V2 from the 1st ventilation port 31a and the 4th ventilation port 31d located in the width direction edge part of the building 1 is sent from the 2nd ventilation port 31b and the 3rd ventilation port 31c. Since the air volume is set to be the same as the air volume V1, mixing of water vapor from the water vapor generation area 10 to the dew condensation prohibition area 20 can be reliably suppressed.
以上、本実施形態である本実施形態であるについて説明したが、本発明はこれに限定されることはなく、その発明の技術的思想を逸脱しない範囲で適宜変更可能である。
例えば、本実施形態では、送風設備を建屋の床面に設置したものとして説明したが、これに限定されることはなく、図３に示すように、屋根面３に送風設備１３０を配設して、第１の気流４１及び第２の気流４２を形成してもよい。
As mentioned above, although this embodiment which is this embodiment was demonstrated, this invention is not limited to this, It can change suitably in the range which does not deviate from the technical idea of the invention.
For example, in this embodiment, although it demonstrated as what installed the ventilation equipment in the floor surface of a building, it is not limited to this, As shown in FIG. Thus, the first air flow 41 and the second air flow 42 may be formed.
また、本実施形態では、水蒸気発生エリアと結露禁止エリアとの境界に沿って複数の送風口が一列に並ぶように設けられたものを例に挙げて説明したが、これに限定されることはなく、送風口を２列以上に配設したものであってもよい。
さらに、送風口の個数も本実施形態に限定されることはなく、任意の数の送風口を設けてもよい。
Further, in the present embodiment, an example has been described in which a plurality of air outlets are arranged in a line along the boundary between the water vapor generation area and the dew condensation prohibition area, but the present invention is not limited to this. Alternatively, the air outlets may be arranged in two or more rows.
Further, the number of air outlets is not limited to this embodiment, and an arbitrary number of air outlets may be provided.
本発明の効果を確認すべく実施した実験結果について説明する。
シミュレーションソフト（ＦＬＵＥＮＴ）を用いて、図１及び図２に示す建屋において、下記に示す条件で結露禁止エリアの屋根面における湿度分布を計算した。計算結果の一例を図９に示す。図４において、黒色領域は湿度が１００％超えており結露した部分となる。そこで、結露の評価として、計算結果の図から結露禁止エリアの屋根面のうち黒色領域が占める割合を評価した。
The results of experiments conducted to confirm the effects of the present invention will be described.
Using the simulation software (FLUENT), the humidity distribution on the roof surface of the dew condensation-prohibited area was calculated under the conditions shown below in the buildings shown in FIGS. An example of the calculation result is shown in FIG. In FIG. 4, the black region is a portion where the humidity exceeds 100% and condensation occurs. Therefore, as a dew condensation evaluation, the proportion of the black area in the roof surface of the dew condensation prohibited area was evaluated from the calculation results.
＜シミュレーション計算の条件＞
水蒸気発生源からの水蒸気発生量：０．３ｋｇ／ｓ
結露防止エリアの屋根面面積：１６００ｍ２
建屋形状：４０ｍ×３２５ｍ×１９．４ｍ
送風設備からの送風条件：表１参照
気温：−２．９℃
送風量：
送風口３１ａ：１２５０ｍ３／ｍｉｎ（基準値）
送風口３１ｂ：１２５０ｍ３／ｍｉｎ（基準値）
送風口３１ｃ：１２５０ｍ３／ｍｉｎ（基準値）
送風口３１ｄ：１２５０ｍ３／ｍｉｎ（基準値）
<Conditions for simulation calculation>
Amount of water vapor generated from a water vapor source: 0.3 kg / s
Condensation prevention area roof area: 1600m 2
Building shape: 40m x 325m x 19.4m
Air blowing conditions from the air blowing equipment: see Table 1 Air temperature: -2.9 ° C
Air flow:
Ventilation port 31a: 1250m 3 / min (reference value)
Air outlet 31b: 1250 m 3 / min (reference value)
Air outlet 31c: 1250 m 3 / min (reference value)
Air outlet 31d: 1250 m 3 / min (reference value)
評価結果を表１に示す。なお、表１においては、鉛直方向に対して結露禁止エリア側に傾いた角度を「＋」、水蒸気発生エリア側に傾いた角度を「−」として表記した。 The evaluation results are shown in Table 1. In Table 1, the angle tilted toward the dew condensation prohibition area side with respect to the vertical direction is represented as “+”, and the angle tilted toward the water vapor generation area side is represented as “−”.
送風を実施していない従来例においては、結露領域が１６００ｍ２と大きくなっていることが確認された。
これに対して、送風を実施した本発明例では、いずれも結露領域が減少していることが確認される。特に、第２送風口及び第３送風口の角度θ１を３０°とした発明例４では結露領域が１２ｍ２と大きく減少しており、第２送風口及び第３送風口の角度θ１を３０°とするともに第１送風口及び第４送風口の角度θ２を−２０°とした本発明例３では結露領域が存在しなかった。
以上のことから、本発明例によれば、建屋屋根面の結露を効果的に防止することが可能であることが確認された。
It was confirmed that the dew condensation area was as large as 1600 m 2 in the conventional example in which no ventilation was performed.
On the other hand, it is confirmed that the dew condensation area is reduced in all the examples of the present invention in which the ventilation is performed. In particular, in Invention Example 4 in which the angle θ1 of the second air outlet and the third air outlet is 30 °, the dew condensation area is greatly reduced to 12 m 2, and the angle θ1 of the second air outlet and the third air outlet is 30 °. In addition, no condensation region was present in Invention Example 3 in which the angle θ2 of the first air outlet and the fourth air outlet was −20 °.
From the above, according to the example of the present invention, it was confirmed that condensation on the building roof surface can be effectively prevented.
１ 建屋
２ 床面
３ 屋根面
１０ 水蒸気発生エリア
１１ 圧延機（水蒸気発生源）
２０ 結露禁止エリア
２１ 電源設備
３０ 送風設備
４１ 第１の気流
４２ 第２の気流
DESCRIPTION OF SYMBOLS 1 Building 2 Floor surface 3 Roof surface 10 Water vapor generation area 11 Rolling mill (water vapor generation source)
20 Condensation Prohibition Area 21 Power Supply Facility 30 Blower Facility 41 First Air Flow 42 Second Air Flow
Claims (4)
前記水蒸気発生源が設置された水蒸気発生エリアと前記結露禁止エリアとの間に送風設備を設置し、
この送風設備によって、前記結露禁止エリアに向けて屋根面に沿って流動する第１の気流を形成するとともに、前記水蒸気発生エリア側に向けて流動する第２の気流を形成することを特徴とする建屋内屋根面結露防止方法。 In a building where a water vapor generation source is disposed, a method for preventing condensation on a roof surface in a building that prevents condensation on a roof surface in a condensation-free area,
A blower facility is installed between the water vapor generation area where the water vapor generation source is installed and the dew condensation prohibited area,
The blower facility forms a first air stream that flows along the roof surface toward the dew condensation-prohibited area, and a second air stream that flows toward the water vapor generating area. How to prevent condensation on the roof of buildings.
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Citations (6)
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|---|---|---|---|---|
| JP2002243226A (en) * | 2000-12-11 | 2002-08-28 | Daikin Ind Ltd | Humidifying device, humidifying and dehumidifying machine and dehumidifier |
| JP2004293963A (en) * | 2003-03-27 | 2004-10-21 | Matsushita Electric Ind Co Ltd | Humidity adjusting device |
| JP2010270934A (en) * | 2009-05-19 | 2010-12-02 | Mitsubishi Electric Corp | Dehumidifying drying machine |
| JP2011033302A (en) * | 2009-08-05 | 2011-02-17 | Takumasa Watanabe | Humidity control ventilator |
| JP2011036768A (en) * | 2009-08-07 | 2011-02-24 | Mitsubishi Electric Corp | Dehumidifier |
| JP2011220567A (en) * | 2010-04-06 | 2011-11-04 | Nihon Gore Kk | Humidifying/dehumidifying device, and humidifying/dehumidifying equipment |
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- 2014-10-01 JP JP2014203112A patent/JP6424551B2/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002243226A (en) * | 2000-12-11 | 2002-08-28 | Daikin Ind Ltd | Humidifying device, humidifying and dehumidifying machine and dehumidifier |
| JP2004293963A (en) * | 2003-03-27 | 2004-10-21 | Matsushita Electric Ind Co Ltd | Humidity adjusting device |
| JP2010270934A (en) * | 2009-05-19 | 2010-12-02 | Mitsubishi Electric Corp | Dehumidifying drying machine |
| JP2011033302A (en) * | 2009-08-05 | 2011-02-17 | Takumasa Watanabe | Humidity control ventilator |
| JP2011036768A (en) * | 2009-08-07 | 2011-02-24 | Mitsubishi Electric Corp | Dehumidifier |
| JP2011220567A (en) * | 2010-04-06 | 2011-11-04 | Nihon Gore Kk | Humidifying/dehumidifying device, and humidifying/dehumidifying equipment |
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| JP6424551B2 (en) | 2018-11-21 |
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