JP6071230B2 - Radiant heating system - Google Patents
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- JP6071230B2 JP6071230B2 JP2012080752A JP2012080752A JP6071230B2 JP 6071230 B2 JP6071230 B2 JP 6071230B2 JP 2012080752 A JP2012080752 A JP 2012080752A JP 2012080752 A JP2012080752 A JP 2012080752A JP 6071230 B2 JP6071230 B2 JP 6071230B2
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- 238000010438 heat treatment Methods 0.000 title claims description 30
- 239000000463 material Substances 0.000 claims description 41
- 239000011810 insulating material Substances 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 2
- 230000005855 radiation Effects 0.000 description 15
- 238000004378 air conditioning Methods 0.000 description 6
- 230000001143 conditioned effect Effects 0.000 description 5
- 206010037660 Pyrexia Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Description
本発明は、主に天井材を加温して室内の暖房を行う天井放射暖房システムに関するものである。 The present invention relates to a ceiling radiant heating system that mainly heats a ceiling material to heat a room.
居室空間の温湿度環境を快適にするための空調機は、空調空気を居室空間へ噴き出すものが一般的である。このような空気噴流式の空調機によれば、居室空間に気流が発生し、その気流が人体に直接当たることで不快を感じることがある。また、空気の温度と密度との関係により、冷気は下へ暖気は上へ移動する対流によって上下温度分布が発生し、頭熱足寒の環境となりやすい。そこで、不快な気流感や、居室空間の上下温度分布が発生しにくい放射暖房システムが注目されている。 An air conditioner for making the temperature and humidity environment of the living room comfortable is generally one that blows out conditioned air to the living room space. According to such an air jet type air conditioner, an air current is generated in the living room space, and the air current directly hits the human body, which may cause discomfort. Also, due to the relationship between the temperature and density of the air, the convection in which the cool air moves down and the warm air moves up tends to generate an up-and-down temperature distribution, which tends to be an environment of cold head heat. Therefore, a radiant heating system that is less likely to generate an unpleasant airflow feeling and a vertical temperature distribution in the living room is drawing attention.
放射暖房システムとして、天井裏空間を空気調和機で加温し、居室天井面を放射面として居室を放射空間とする天井チャンバー方式が知られている。しかしながら、天井チャンバー方式の天井放射暖房システムにおいては、直接、空気の温度を調節する対流式空調に比較して、空調立ち上げ時に目標設定温度に到達させるのに必要な時間が長いことが課題となっている。そこで従来、天井チャンバー内の加温空気を室内に流入させることにより、空調立ち上がり時間の短縮を図る技術が提案されている。 As a radiant heating system, a ceiling chamber system is known in which a ceiling back space is heated by an air conditioner, the ceiling surface of the room is the radiation surface, and the room is the radiation space. However, the ceiling chamber-type ceiling radiant heating system has a problem that the time required to reach the target set temperature at the start-up of the air conditioning is longer than the convection type air conditioning that directly adjusts the air temperature. It has become. Therefore, conventionally, there has been proposed a technique for shortening the air conditioning start-up time by flowing warm air in the ceiling chamber into the room.
例えば下記の特許文献に記載された放射暖房システムは、図２に示すように、居室空間Ｓ１の熱負荷が小さい時には空調機１０１によって天井裏空間（天井チャンバー）Ｓ２を空調し、天井材１０２を熱放射面としたものであり、居室空間Ｓ１の熱負荷が大きい時には天井材１０２に設けられたダンパー１０３を開いて、天井裏空間Ｓ２の空調空気を居室空間Ｓ１に送り込むことで、居室空間Ｓ１の空調立ち上がり時間の短縮と、熱負荷変動時の制御を可能とし、短時間で快適性の向上を図っている。 For example, in the radiant heating system described in the following patent document, as shown in FIG. 2, when the thermal load of the living room space S1 is small, the air conditioner 101 air-conditions the ceiling back space (ceiling chamber) S2, and the ceiling material 102 is When the heat load on the living room space S1 is large, the damper 103 provided on the ceiling material 102 is opened, and the conditioned air in the ceiling back space S2 is sent into the living room space S1 to open the living room space S1. The air conditioning start-up time can be shortened and the control when the heat load fluctuates is possible, and the comfort is improved in a short time.
しかしながら、上記従来のシステムのように、天井裏空間Ｓ２の空調空気の大量放出によって居室空間Ｓ１の空調立ち上がり時間の短縮を図ろうとすると、居室空間Ｓ１内の室温と、天井裏空間Ｓ２から供給される空調空気の温度差が大きいため、上下温度分布差を生じやすくなる。特に冬季には、居室空間Ｓ１内の室温と供給される空調空気の温度差が大きくなるため、居室空間Ｓ１内の上下温度分布差が生じやすくなる。また、効率的に室温を制御するためには居室空間Ｓ１下層になるべく加温空気を到達させようとするため、空調立ち上がり時においては、居住者の滞在空間に気流感を及ぼす可能性もある。 However, as in the conventional system described above, if it is attempted to shorten the air conditioning rise time of the living room space S1 by releasing a large amount of conditioned air in the ceiling back space S2, the room temperature in the living room space S1 and the back space S2 are supplied. Since the temperature difference of the conditioned air is large, a difference in the vertical temperature distribution is likely to occur. Particularly in winter, the temperature difference between the room temperature in the living room space S1 and the supplied conditioned air becomes large, so that a difference in vertical temperature distribution in the living room space S1 is likely to occur. Further, in order to efficiently control the room temperature, the heated air is made to reach the lower layer of the living room space S1, so that there is a possibility that a feeling of airflow is exerted on the resident's staying space at the time of air conditioning start-up.
本発明は、以上のような点に鑑みてなされたものであって、その技術的課題は、放射による居室空間の暖房を行うシステムにおいて、天井面からの放射による暖房の立ち上がりの悪さを改善すると共に、居室空間での気流感の改善を図ることにある。 The present invention has been made in view of the above points, and its technical problem is to improve the poor rise of heating due to radiation from the ceiling surface in a system for heating a living room space by radiation. At the same time, it is to improve the airflow feeling in the living room.
上述した技術的課題を有効に解決するための手段として、請求項１の発明に係る放射暖房システムは、天井材の裏側に画成された天井裏空間と、この天井裏空間の空気を加温する空調機と、前記天井材に設けられて前記天井裏空間の加温空気を居室空間の上層部へ水平方向に噴き出し可能な複数の噴き出し口と、前記天井材に設けられて前記居室空間の上層部の空気を前記天井裏空間へ取り込む風量調節可能なファンを有する吸気口を備え、前記空調機によって加温された空気を、前記噴き出し口と前記吸気口を介して前記天井裏空間と前記居室空間の上層部を循環させるものであって、前記噴き出し口の開放を選択的に行うことが可能であることを特徴とするものである。 As a means for effectively solving the technical problem described above, a radiant heating system according to the invention of claim 1 includes a ceiling space defined on the back side of the ceiling material and air in the ceiling space. the air conditioner of the plurality of ejection holes which can ejecting horizontally into an upper portion of a heating air room space of the provided in the ceiling material ceiling space, the room space provided in the ceiling material An air intake having a fan capable of adjusting the air volume to take in air in the upper layer portion into the ceiling space, and air heated by the air conditioner is connected to the ceiling space and the ceiling space through the air outlet and the air intake. The upper layer part of the living room space is circulated, and the ejection port can be selectively opened .
上記構成によれば、空調機を駆動させることによって、天井裏空間の空気が加温され、それによる熱が天井材を介して居室空間へ放射されることによって放射暖房が行われる。また、天井裏空間で加温された空気は、噴き出し口から居室空間の上層部へ水平方向に噴き出されるので、天井材の下面に沿った加温空気の流れによって、天井材の両面が効率的に加温され、その結果、天井材から居室空間への熱放射が促進される。しかも天井材の下面に沿った加温空気の流れは、居室空間内に適度な対流を生じさせるので、対流による熱伝達も促される。 According to the said structure, by driving an air conditioner, the air of a ceiling back space is heated, and radiation heat is performed by radiating the heat | fever by that to a living room space through a ceiling material. In addition, air heated in the ceiling space is blown horizontally from the outlet to the upper layer of the room space, so both sides of the ceiling material are made efficient by the flow of heated air along the bottom surface of the ceiling material. As a result, heat radiation from the ceiling material to the living room space is promoted. Moreover, since the flow of warm air along the lower surface of the ceiling material causes moderate convection in the living room space, heat transfer by convection is also promoted.
また、天井裏空間で加温された空気が噴き出し口から居室空間の上層部へ水平方向に噴き出される一方、居室空間の上層部の空気が吸気口から天井裏空間へ取り込まれることにより、天井裏空間と居室空間上層のみで加温空気が循環するので、例えば居住者の身長よりも低い位置に顕著な温度差や不快な気流を生じさせないようにすることができる。 In addition, air heated in the ceiling space is blown horizontally from the outlet to the upper layer of the living room space, while the air in the upper layer of the living room space is taken into the ceiling space from the inlet port, Since the heated air circulates only in the back space and the upper layer of the living room space, for example, it is possible to prevent a significant temperature difference and unpleasant air current from being generated at a position lower than the height of the resident.
請求項２の発明に係る放射暖房システムは、請求項１に記載の構成において、天井裏空間を画成するスラブの下面に断熱材が設けられたことを特徴とするものである。 Radiant heating system according to the invention of claim 2 is the structure of claim 1, is characterized in that the heat insulating material is provided on the lower surface of the slab defining a ceiling space.
請求項３の発明に係る放射暖房システムは、請求項１又は２に記載の構成において、空調機からの加温空気を吐出するダクトが、天井裏空間に旋回流を生じるように配設されたことを特徴とするものである。A radiant heating system according to a third aspect of the present invention is the radiant heating system according to the first or second aspect, wherein the duct for discharging the heated air from the air conditioner is disposed so as to generate a swirling flow in the ceiling space. It is characterized by this.
本発明に係る放射暖房システムによれば、天井材が天井裏空間側及び居室空間側の両面から加温されるので、天井材から居室空間への熱放射が促され、放射暖房の立ち上がりの悪さを改善することができる。また、天井材からの熱放射が促されることによって、床面も効率よく加温されるので、天井放射暖房でも不快な頭熱足寒状態を解消又は低減することができる。 According to the radiant heating system according to the present invention, since the ceiling material is heated from both the ceiling back space side and the room space side, heat radiation from the ceiling material to the room space is promoted, and the rise of the radiant heating is poor. Can be improved. Moreover, since the floor surface is also efficiently heated by promoting the thermal radiation from the ceiling material, the unpleasant head-heated cold state can be eliminated or reduced even by the ceiling radiant heating.
しかも、天井裏空間と居室空間上層の間のみで加温空気を循環させることによって、人の身長より高い位置に熱溜まりをつくることができるので、人の生活空間内での上下温度分布差や気流による不快感を解消又は低減することができる。 Moreover, by circulating the heated air only between the ceiling space and the upper layer of the living room space, it is possible to create a heat pool at a position higher than the height of the person, so the difference in the vertical temperature distribution in the person's living space Discomfort caused by airflow can be eliminated or reduced.
以下、本発明に係る放射暖房システムの好ましい実施の形態について、図１を参照しながら説明する。 Hereinafter, a preferred embodiment of a radiant heating system according to the present invention will be described with reference to FIG.
図１において、参照符号１は鉄骨・鉄筋コンクリート造りの建築物の躯体であって、１１，１２はスラブ、１３は躯体側壁である。上階側のスラブ１２の下側には不図示の吊りボルトや格子状に組まれた天井下地材などを介して天井材２が取り付けられ、天井材２の下側が居室空間Ｓ１、天井材２の裏側すなわち天井材２と上階側のスラブ１２の間が天井裏空間Ｓ２となっている。 In FIG. 1, reference numeral 1 is a frame of a steel frame / reinforced concrete building, 11 and 12 are slabs, and 13 is a frame side wall. A ceiling material 2 is attached to the lower side of the slab 12 on the upper floor side via unillustrated suspension bolts or a ceiling base material assembled in a lattice shape, and the lower side of the ceiling material 2 is the room space S1 and the ceiling material 2 A back space S2 is formed on the back side of the roof, that is, between the ceiling material 2 and the slab 12 on the upper floor side.
天井裏空間Ｓ２に面する上階側のスラブ１２の下面は断熱材１４で覆われており、この断熱材１４によって、天井裏空間Ｓ２は適度に断熱されている。なお、図示してはいないが、スラブ１２の上面や、天井裏空間Ｓ２に面する側壁１３を断熱材で覆うことも好ましい。 The lower surface of the slab 12 on the upper floor side facing the ceiling back space S2 is covered with a heat insulating material 14, and the ceiling back space S2 is appropriately insulated by the heat insulating material 14. Although not shown, it is also preferable to cover the upper surface of the slab 12 and the side wall 13 facing the ceiling space S2 with a heat insulating material.
参照符号３は天井裏空間Ｓ２内に設置されたヒートポンプ式の空調機（室内機）で、その吸気口３ａから天井裏空間Ｓ２内の空気を取り込んで加温し、ダクト３ｂを介して加温空気ＷＡを天井裏空間Ｓ２へ吐出するものである。なお、ダクト３ｂは、天井裏空間Ｓ２に顕著な旋回流を生じるように配設することによって、天井裏空間Ｓ２（天井材２）の温度ムラが極力生じないようにすることが好ましい。 Reference numeral 3 is a heat pump type air conditioner (indoor unit) installed in the ceiling space S2, which takes in the air in the ceiling space S2 from the air inlet 3a and heats it, and heats it through the duct 3b. The air WA is discharged to the ceiling space S2. Note that the duct 3b is preferably disposed so as to generate a noticeable swirling flow in the ceiling space S2, so that the temperature unevenness of the ceiling space S2 (ceiling material 2) does not occur as much as possible.
天井材２には噴き出し口４と吸気口５が開設されている。このうち噴き出し口４は一カ所以上開設されていて、ダンパー４ａによって開閉可能となっており、またこのダンパー４ａは、噴き出し口４の下側に設けられていて、平板状あるいはフラップ状に形成されているため、天井裏空間Ｓ２内から噴き出し口４を通過した空気が水平方向へ噴き出すように案内する機能を有するものである。 The ceiling material 2 is provided with an outlet 4 and an inlet 5. Among these, one or more outlets 4 are opened and can be opened and closed by a damper 4a. The damper 4a is provided below the outlet 4 and is formed in a flat plate shape or a flap shape. Therefore, it has a function to guide the air that has passed through the ejection port 4 from the interior of the ceiling space S2 to be ejected in the horizontal direction.
吸気口５には居室空間Ｓ１の上層部の空気を天井裏空間Ｓ２へ取り込むための風量調節可能なファン６が設けられている。また、噴き出し口４に、天井裏空間Ｓ２の空気を居室空間Ｓ１へ噴き出すためのファンを設けても良い。 The air inlet 5 is provided with a fan 6 capable of adjusting the air volume for taking air in the upper layer of the room space S1 into the ceiling space S2. Moreover, you may provide the fan for injecting the air of ceiling back space S2 to living room space S1 in the ejection outlet 4. As shown in FIG.
居室空間Ｓ１内を放射暖房の環境とするには、居室空間Ｓ１の温度と天井材２の表面温度の温度差をある程度保つ必要があるため、天井材２は、熱抵抗が0.2ｍ２・Ｋ/Ｗ以下のものが採用され、例えば石膏ボードからなるものが好適に用いられる。また、噴き出し口４から居室空間Ｓ１への風量は、床面積当たり0.01ｍ３/s以下とすることが好ましい。 Since the temperature difference between the temperature of the room space S1 and the surface temperature of the ceiling material 2 needs to be kept to some extent in order to make the room space S1 an environment of radiant heating, the ceiling material 2 has a thermal resistance of 0.2 m 2 · K. / W or less is adopted, and for example, a gypsum board is preferably used. Moreover, it is preferable that the air volume from the outlet 4 to the living room space S1 is 0.01 m 3 / s or less per floor area.
なお、空調機３、ファン６及びダンパー４ａの駆動は、例えば壁面などに着脱可能な不図示のリモコン装置の操作によって制御可能とすることができる。 The driving of the air conditioner 3, the fan 6, and the damper 4a can be controlled by operating a remote controller (not shown) that can be attached to and detached from a wall surface, for example.
以上のように構成された実施の形態の放射暖房システムによれば、冬季の暖房においては、例えばユーザーがリモコン装置を操作することによって空調機３を運転させると、まず天井裏空間Ｓ２へ加温空気ＷＡが供給され、すなわち天井裏空間Ｓ２の空気が加温される。天井裏空間Ｓ２は断熱材１４によって適度に断熱されているため、天井裏空間Ｓ２の空気の加温が効率良く行われる。そして天井裏空間Ｓ２内の温度が上昇して行くにつれて、天井裏空間Ｓ２内の加温空気ＷＡとの熱交換によって天井材２も加温されるので、この天井材２から居室空間Ｓ１への熱放射によって放射暖房が行われる。 According to the radiant heating system of the embodiment configured as described above, in winter heating, for example, when the user operates the air conditioner 3 by operating the remote control device, the heating to the ceiling space S2 is first performed. Air WA is supplied, that is, the air in the ceiling space S2 is heated. Since the ceiling back space S2 is appropriately insulated by the heat insulating material 14, the air in the ceiling back space S2 is efficiently heated. And as the temperature in the ceiling space S2 rises, the ceiling material 2 is also heated by heat exchange with the heated air WA in the ceiling space S2, so that the ceiling material 2 is transferred to the living room space S1. Radiant heating is performed by heat radiation.
ここで、天井材２に開設された複数の噴き出し口４のうち、任意の噴き出し口４のダンパー４ａを開放すると共に吸気口５のファン６を駆動させると、居室空間Ｓ１の上層部（好ましくは人間の身長ｈより高いゾーン）Ｓ１ａの空気が吸気口５から天井裏空間Ｓ２へ取り込まれると共に、空調機３によって加温された天井裏空間Ｓ２内の空気が、ダンパー４ａを開放した噴き出し口４から居室空間Ｓ１の上層部Ｓ１ａへ噴き出される。 Here, when the damper 4a of any of the plurality of outlets 4 established in the ceiling material 2 is opened and the fan 6 of the inlet 5 is driven, the upper layer part (preferably (Zone higher than human height h) The air in S1a is taken into the ceiling space S2 from the air inlet 5, and the air in the ceiling space S2 heated by the air conditioner 3 is blown out through the damper 4a. To the upper layer part S1a of the living room space S1.
そして、居室空間Ｓ１の上層部Ｓ１ａへ噴き出された加温空気は比重が小さいことに加え、噴き出し口４の下側にあるダンパー４ａが噴き出し口４からの加温空気を水平方向へ噴き出すように案内する機能を有するため、噴き出された加温空気は天井材２の下面に沿って流れ、吸気口５のファン６によって天井裏空間Ｓ２へ還流することになる。このため天井材２は、天井裏空間Ｓ２内の加温空気と、居室空間Ｓ１の上層部Ｓ１ａを天井材２の下面に沿って流れる加温空気によって、天井材２の両面が効率的に加温される。このため天井材２から居室空間Ｓ１への熱放射が促進される。 The warm air blown to the upper layer portion S1a of the living room space S1 has a small specific gravity, and the damper 4a below the blowout port 4 blows out the warmed air from the blowout port 4 in the horizontal direction. Therefore, the jetted warm air flows along the lower surface of the ceiling material 2 and is returned to the ceiling space S2 by the fan 6 of the air inlet 5. For this reason, the ceiling material 2 efficiently heats both surfaces of the ceiling material 2 by the heated air in the ceiling back space S2 and the heated air flowing along the lower surface of the ceiling material 2 in the upper layer portion S1a of the living room space S1. Be warmed. For this reason, heat radiation from the ceiling material 2 to the living room space S1 is promoted.
しかも、天井材２の下面に沿った加温空気の流れは、居室空間Ｓ１の中・下層部Ｓ１ｂに適度な対流を生じさせるので、対流による中・下層部Ｓ１ｂへの熱伝達も促される。 Moreover, since the flow of the heated air along the lower surface of the ceiling material 2 causes moderate convection in the middle / lower layer part S1b of the living room space S1, heat transfer to the middle / lower layer part S1b by convection is also promoted.
したがって、天井材２からの熱放射による居室空間Ｓ１の放射暖房の立ち上がりの悪さが改善されると共に、居室空間Ｓ１の中・下層部Ｓ１ｂでは、天井材２からの熱放射が促されることによって、床面１１ａが効率よく加温されるので、頭熱足寒となるような不快な温度分布を解消又は低減することができる。詳しくは、図１に温度分布を濃淡（濃いほど高温）及び線図で示すように、居室空間Ｓ１では、上層部Ｓ１ａには天井材２と接する部分（上端）が最も高温となる顕著な温度勾配を生じるが、中・下層部Ｓ１ｂではほぼ温度が一様で、天井材２からの熱放射により加温された床面１１ａに接する最も下層部では温度が高くなるので、頭寒足熱の温度分布を創出することができる。 Therefore, the bad rise of the radiant heating of the room space S1 due to the heat radiation from the ceiling material 2 is improved, and in the middle / lower layer part S1b of the room space S1, the heat radiation from the ceiling material 2 is promoted, Since the floor surface 11a is efficiently heated, it is possible to eliminate or reduce an unpleasant temperature distribution that causes a cold head. Specifically, as shown in FIG. 1 with the temperature distribution shown by shading (the darker the temperature is higher) and the diagram, in the living room space S1, the upper layer part S1a has a remarkable temperature at which the part (upper end) in contact with the ceiling material 2 is the highest temperature. Although the gradient is generated, the temperature is substantially uniform in the middle / lower layer portion S1b, and the temperature is higher in the lowermost layer portion that is in contact with the floor surface 11a heated by the heat radiation from the ceiling material 2. Can be created.
そして、天井裏空間Ｓ２に旋回流が形成されるようにすれば、天井裏空間Ｓ２の温度分布が一様になり、天井材２に温度ムラができにくくなるので、天井材２から居室空間Ｓ１への熱放射の均一化を図ることができる。 If a swirl flow is formed in the ceiling space S2, the temperature distribution of the ceiling space S2 becomes uniform, and it becomes difficult for the ceiling material 2 to be uneven in temperature. The heat radiation can be made uniform.
また、空調機３によって加温された空気が天井裏空間Ｓ２と居室空間Ｓ１の上層部Ｓ１ａのみで循環するので、人間の身長ｈより高いゾーンに熱溜まりをつくることができるので、居室空間Ｓ１の中・下層部Ｓ１ｂに顕著な温度差や不快な気流を生じさせないようにすることができる。 In addition, since the air heated by the air conditioner 3 circulates only in the ceiling space S2 and the upper layer part S1a of the living room space S1, a heat pool can be created in a zone higher than the human height h, so that the living room space S1. It is possible to prevent a noticeable temperature difference and unpleasant airflow from being generated in the middle / lower layer part S1b.
さらに、ダンパー４ａを開放する噴き出し口４の選択によって、加温空気の循環領域を任意に調整することができる。 Furthermore, the circulation area of the heated air can be arbitrarily adjusted by selecting the outlet 4 that opens the damper 4a.
１ 建築物の躯体
１１，１２ スラブ
１１ａ 床面
１４ 断熱材
２ 天井材
３ 空調機
４ 噴き出し口
４ａ ダンパー
５ 吸気口
６ ファン
Ｓ１ 居室空間
Ｓ１ａ 上層部
Ｓ１ｂ 中・下層部
Ｓ２ 天井裏空間
ＷＡ 加温空気
DESCRIPTION OF SYMBOLS 1 Building frame 11, 12 Slab 11a Floor 14 Heat insulating material 2 Ceiling material 3 Air conditioner 4 Outlet 4a Damper 5 Inlet 6 Fan S1 Living room space S1a Upper layer part S1b Middle and lower layer part S2 Ceiling back space WA Warming air
Claims (3)
The radiant heating system according to claim 1 or 2, wherein a duct for discharging heated air from the air conditioner is disposed so as to generate a swirling flow in the ceiling space .
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| JP6071230B2 true JP6071230B2 (en) | 2017-02-01 |
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| JP2570386B2 (en) * | 1988-06-09 | 1997-01-08 | 日立プラント建設株式会社 | Clean room |
| JPH0755205A (en) * | 1993-08-10 | 1995-03-03 | Toshiba Corp | Radiation type air conditioner |
| JPH0894111A (en) * | 1994-09-27 | 1996-04-12 | Nippon Steel Corp | Air-conditioning equipment |
| JP3432022B2 (en) * | 1994-12-13 | 2003-07-28 | 東芝キヤリア株式会社 | Air conditioner |
| JP3540861B2 (en) * | 1995-03-23 | 2004-07-07 | 新日本製鐵株式会社 | Radiation type air conditioning method and apparatus |
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