JP2003172586A - Evaporated water recovering method in cooling tower - Google Patents
Evaporated water recovering method in cooling towerInfo
- Publication number
- JP2003172586A JP2003172586A JP2001372333A JP2001372333A JP2003172586A JP 2003172586 A JP2003172586 A JP 2003172586A JP 2001372333 A JP2001372333 A JP 2001372333A JP 2001372333 A JP2001372333 A JP 2001372333A JP 2003172586 A JP2003172586 A JP 2003172586A
- Authority
- JP
- Japan
- Prior art keywords
- water
- cooling tower
- collection duct
- air
- duct
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 242
- 238000001816 cooling Methods 0.000 title claims abstract description 75
- 238000000034 method Methods 0.000 title claims description 54
- 229920006395 saturated elastomer Polymers 0.000 claims abstract description 46
- 238000009833 condensation Methods 0.000 claims abstract description 40
- 230000005494 condensation Effects 0.000 claims abstract description 40
- 239000003507 refrigerant Substances 0.000 claims abstract description 14
- 239000003595 mist Substances 0.000 claims abstract description 8
- 238000005507 spraying Methods 0.000 claims description 3
- 238000007667 floating Methods 0.000 claims description 2
- 239000007921 spray Substances 0.000 abstract description 22
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 18
- 239000000654 additive Substances 0.000 abstract description 9
- 239000012535 impurity Substances 0.000 abstract description 9
- 239000000377 silicon dioxide Substances 0.000 abstract description 9
- 230000006866 deterioration Effects 0.000 abstract description 5
- 239000000498 cooling water Substances 0.000 abstract 1
- 239000006185 dispersion Substances 0.000 abstract 1
- 230000009466 transformation Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 14
- 239000008399 tap water Substances 0.000 description 8
- 235000020679 tap water Nutrition 0.000 description 8
- 238000010586 diagram Methods 0.000 description 4
- 238000009834 vaporization Methods 0.000 description 4
- 230000008016 vaporization Effects 0.000 description 4
- 238000011084 recovery Methods 0.000 description 3
- 102220474974 POTE ankyrin domain family member C_F28C_mutation Human genes 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 230000001747 exhibiting effect Effects 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Air-Flow Control Members (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は冷却塔における蒸発水
の回収方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for recovering evaporated water in a cooling tower.
【０００２】[0002]
【従来の技術】冷却塔、例えば直交流式冷却塔において
は、散布水の気化の潜熱を利用しての冷却においては散
布水の一部が蒸発し,空気側に物質移動し、その蒸発量
は熱交換する熱量と散布水の水量の蒸発潜熱により決定
される。散布水が蒸発することで散布水中の添加剤、シ
リカなどの不純物の濃度が高くなり、その水質が悪化す
る。散布水との間で熱交換する外気である空気は加熱、
加温され、排気口では飽和状態の空気となる。この空気
が加熱される温度は熱交換する熱量と空気量で定まる。
前記単位時間当りの蒸発量は、冷却塔の同時間当りの補
給水量の６５乃至７０％を占め、省水資源の観点からは
改善する余地が充分にある。,2. Description of the Related Art In a cooling tower, for example, a cross flow type cooling tower, in cooling using the latent heat of vaporization of spray water, a part of the spray water is evaporated and the mass is transferred to the air side. Is determined by the amount of heat exchanged and the latent heat of vaporization of the amount of spray water. As the sprayed water evaporates, the concentration of impurities such as additives and silica in the sprayed water increases, and the water quality deteriorates. The air that is the outside air that exchanges heat with the sprayed water is heated,
It is heated and becomes saturated air at the exhaust port. The temperature at which this air is heated is determined by the amount of heat exchanged and the amount of air.
The amount of evaporation per unit time accounts for 65 to 70% of the amount of make-up water per unit time of the cooling tower, and there is ample room for improvement from the viewpoint of water saving resources. ,
【０００３】[0003]
【発明が解決しようとする課題】この発明の目的は、前
記蒸発水を回収することにより、夏季,冬季における渇
水状態において水道水の補給が制限又は停止された場合
でも、蒸発水を回収し、その渇水に対応すると共に、補
給水量比率を少なくし、水資源の有効利用に寄与し水道
代金の低減を図ることである。更に、この発明の別の目
的は、回収した蒸発水を冷却塔に戻し、散布水中の添加
剤、シリカなどの不純物の濃縮を緩和し、その水質の悪
化を防止することである。The object of the present invention is to recover the evaporated water by recovering the evaporated water, even when the supply of tap water is limited or stopped in the drought state in summer and winter, It is to cope with the drought, reduce the amount of makeup water, contribute to the effective use of water resources, and reduce the water bill. Furthermore, another object of the present invention is to return the recovered evaporated water to the cooling tower, reduce the concentration of impurities such as additives and silica in the spray water, and prevent the deterioration of the water quality.
【０００４】[0004]
【課題を解決するための手段】前記課題を達成するため
に、特定発明は冷却塔の排気口から排気される飽和状態
の湿り空気を冷水、冷風、外気風、補給水の内の少なく
とも１種の冷媒により間接的に冷却し、過飽和空気とし
て、結露を発生し、散布水又は循環水の一部として回収
することを特徴とする冷却塔における蒸発水の回収方法
とする。In order to achieve the above object, the specific invention is to provide saturated moist air exhausted from an exhaust port of a cooling tower by at least one of cold water, cold air, outside air, and makeup water. The method for recovering evaporated water in a cooling tower is characterized in that it is indirectly cooled by the refrigerant of (3) above, condensed as supersaturated air, and is recovered as a part of spray water or circulating water.
【０００５】前記課題を達成するために、冷却塔の排気
口から排気される飽和状態の湿り空気を排気筒と連なる
ミスト捕集ダクトとの内面に向けて吹き付け、この捕集
ダクトの外面に沿い流れる冷水、冷風、外気風、補給水
の内の少なくとも１種の冷媒により、間接的に飽和状態
の湿り空気を冷却することを特徴とする。In order to achieve the above-mentioned object, saturated humid air exhausted from the exhaust port of the cooling tower is blown toward the inner surface of the mist collecting duct connected to the exhaust pipe, and along the outer surface of the collecting duct. It is characterized in that the moist air in a saturated state is indirectly cooled by at least one kind of refrigerant in flowing cold water, cold air, outside air, and makeup water.
【０００６】前記課題を達成するために、前記発生した
結露水を前記捕集ダクトの底部で一時収集し、冷却塔の
散水装置に散布水又は循環水の一部として回収し供給す
ることを特徴とする。In order to achieve the above object, the generated dew condensation water is temporarily collected at the bottom of the collection duct, and is collected and supplied as a part of spray water or circulating water to a water sprinkler of a cooling tower. And
【０００７】前記課題を達成するために、前記捕集ダク
ト内面に結露して付着した水滴が浮遊するのを前記捕集
ダクト内面に接近して配置した内部ルーバーにより捕捉
することを特徴とする。In order to achieve the above-mentioned object, it is characterized in that water droplets that are condensed and adhere to the inner surface of the collection duct are caught by an internal louver arranged close to the inner surface of the collection duct.
【０００８】前記課題を達成するために、前記内部ルー
バーを夫々外側が内側より低い下向きのルーバーとし
て、前記飽和状態の湿り空気を前記ルーバー内外に分流
して前記捕集ダクト内面に案内し、前記結露を発生させ
ることを特徴とする。In order to achieve the above object, the inner louvers are downward louvers whose outer sides are lower than their inner sides, and the saturated moist air is diverted into and out of the louvers and guided to the inner surface of the collection duct. It is characterized by generating dew condensation.
【０００９】前記課題を達成するために、前記冷水は冷
温水器の冷水の一部を直接使用することを特徴とする。In order to achieve the above object, the cold water is characterized by directly using a part of the cold water of a cold water heater.
【００１０】前記課題を達成するために、前記捕集ダク
トの横断面積を排気筒の排出口の横断面積より大きめに
形成し,前記捕集ダクトの内面下部に設けたリング状の
水受け内に前記結露水を一時収集させることを特徴とす
る。In order to achieve the above object, the cross-sectional area of the collecting duct is made larger than the cross-sectional area of the discharge port of the exhaust pipe, and the cross-sectional area of the ring-shaped water receiver is provided at the lower part of the inner surface of the collecting duct. It is characterized in that the condensed water is temporarily collected.
【００１１】前記課題を達成するために、前記捕集ダク
トの横断面積を排気筒の排気口の横断面積に対して、
１．２倍から２倍とし、前記排気筒の排気口から排出さ
れる飽和状態の湿り空気の速度を低速とすることを特徴
とする。In order to achieve the above object, the cross-sectional area of the collection duct is set to the cross-sectional area of the exhaust port of the exhaust stack,
The speed is 1.2 times to 2 times, and the speed of the saturated moist air discharged from the exhaust port of the exhaust stack is set to a low speed.
【００１２】前記課題を達成するために、前記捕集ダク
トの底部で一時収集した結露水量の全蒸発水量に対する
比率を１０乃至１５%とすることを特徴とする。In order to achieve the above object, the ratio of the amount of condensed water temporarily collected at the bottom of the collecting duct to the total amount of evaporated water is set to 10 to 15%.
【００１３】前記課題を達成するために、前記冷却塔の
方式を直交流式、向流式の内の１種とし、この冷却塔本
体内に装填された密閉型乃至開放型熱交換器上に前記捕
集ダクトの底部で一時収集した結露水を散布することを
特徴とする。In order to achieve the above object, the cooling tower system is one of a cross flow system and a counter flow system, and a closed type or open type heat exchanger is loaded in the cooling tower body. It is characterized in that the condensed water that is temporarily collected is sprayed at the bottom of the collection duct.
【００１４】前記課題を達成するために、前記捕集ダク
トの高さ寸法を排気筒の高さ寸法より長めとして、前記
飽和状態の湿り空気の前記捕集ダクト内面への吹き付け
領域を前記捕集ダクトの中段から上縁部に亘る領域とし
て、前記結露の発生を行うことを特徴とする。In order to achieve the above object, the height of the collecting duct is set to be longer than the height of the exhaust stack, and a region where the saturated moist air is blown to the inner surface of the collecting duct is collected. The condensation is generated as a region extending from the middle stage to the upper edge of the duct.
【００１５】[0015]
【発明の実施の形態】実施の形態１
この形態は,請求項１、２、３、６、７、８、９、１０
及び１１記載の方法発明を含む代表的な実施の形態であ
り,図１において、冷却塔１０の方式を密閉型の直交流
式として、上部水槽１１から散布水を密閉型熱交換器１
２上に散布し、外気流と接触し、その潜熱作用で散布水
を冷却し、この密閉型熱交換器１２内を循環する循環水
を間接的に冷却し、前記冷却塔１０の排気口を形成する
送風機１９を備えた排気筒１３から排気される空気を飽
和状態の湿り空気とする。この飽和状態の湿り空気は前
記排気筒１３と連なるミスト捕集ダクト１４の内面に向
けて変流板１７に案内されて吹き付けられ、この捕集ダ
クト１４の外面に沿い流れる冷媒の１種である冷水によ
り間接的に冷却し、過飽和空気となって、前記捕集ダク
ト１４の内面に結露を発生させる。この際、前記変流板
１７により前記捕集ダクト１４内面への吹き付け位置は
この変流板１７の上位、つまり前記捕集ダクト１４の中
央最上部のものほど前記捕集ダクト１４の上縁よりに吹
き付け、前記排気筒１３周辺部よりの変流板１７による
吹きつけ位置を前記捕集ダクト１４の中段よりやや低め
とする。前記変流板１７による排気流の方向変更方法
は、一例であって、前記例に限定されない。要は排気流
がより多く前記捕集ダクト１４の内面に接触させるよう
にしてあれば、前記方法に限定されない。好ましくは、
前記捕集ダクト１４の高さ寸法を前記排気筒１３の高さ
寸法より長めとして、前記飽和状態の湿り空気の前記捕
集ダクト１４内面への吹き付け領域を広くし、前記捕集
ダクト１４の中段から上縁部に亘る領域として、前記結
露の発生を行う前記捕集ダクト１４の底部で一時収集し
た結露水量の全蒸発水量に対する比率を１０乃至１５%
とする。この態様では、前記冷水の場合には,捕集ダク
ト１４の外面に沿い螺旋状に溶接など配管したパイプＰ
を水冷ジャケットとして使用し、このパイプＰ内を前記
冷水が流れる。前記発生した結露水を前記捕集ダクト１
４の底部に形成したリング状の水受け１５で一時収集
し、これを前記捕集ダクト１４外に導き、前記上部水槽
１１に散布水の一部として回収し供給する。前記冷水と
して冷温水器の１種である冷凍機からの冷水の一部を直
接前記パイプＰに供給し使用する。前記捕集ダクト１４
の横断面積を排気筒１３の排気口の横断面積より大きめ
に形成し,風速を低下させ、かつ気流との接触面積を大
きくして、前記捕集ダクト１４の内面下部に設けたリン
グ状の水受け１５に集められた前記結露水の再飛散を防
止することが好ましい。前記捕集ダクト１４の横断面積
は前記排気筒１３の排気口の横断面積の１．２乃至２倍
程度が望ましい。この比率が小さすぎると風速低下効果
が少なく、この比率が大きすぎると場所取り資材が余計
となる。前記冷水に代えて,冷風、外気風、補給水を使
用することもある。なお,外気風の場合には,前記水冷ジ
ャケットは使用しない。BEST MODE FOR CARRYING OUT THE INVENTION Embodiment 1 This form is defined in claims 1, 2, 3, 6, 7, 8, 9, 10.
1 is a typical embodiment including the method invention of FIG. 11, and in FIG. 1, the cooling tower 10 is of a closed type cross-flow type, and spray water is sprayed from the upper water tank 11 into a closed type heat exchanger 1.
2 is sprayed on and is contacted with the outside air flow, and the sprayed water is cooled by the latent heat effect of the sprayed water, and the circulating water circulating in the closed heat exchanger 12 is indirectly cooled, and the exhaust port of the cooling tower 10 is cooled. The air exhausted from the exhaust stack 13 provided with the blower 19 to be formed is saturated moist air. The saturated moist air is one kind of refrigerant flowing along the outer surface of the collecting duct 14 while being guided and blown toward the inner surface of the mist collecting duct 14 connected to the exhaust pipe 13 by the current-changing plate 17. It is indirectly cooled by cold water to become supersaturated air, which causes dew condensation on the inner surface of the collection duct 14. At this time, the position of spraying to the inner surface of the collecting duct 14 by the current-changing plate 17 is higher than the current-changing plate 17, that is, the uppermost one in the center of the collecting duct 14 is closer to the upper edge of the collecting duct 14. Then, the blowing position of the current-changing plate 17 from the peripheral portion of the exhaust pipe 13 is set to be slightly lower than the middle stage of the collecting duct 14. The method of changing the direction of the exhaust flow by the current-changing plate 17 is an example, and is not limited to the above example. The point is that the method is not limited to the above method as long as a larger amount of exhaust flow is brought into contact with the inner surface of the collection duct 14. Preferably,
The height dimension of the collection duct 14 is made longer than the height dimension of the exhaust pipe 13 to widen the area where the saturated moist air is blown to the inner surface of the collection duct 14, and the middle stage of the collection duct 14 is expanded. As a region from the top to the upper edge, the ratio of the amount of condensed water temporarily collected at the bottom of the collection duct 14 that causes the condensation to the total amount of evaporated water is 10 to 15%.
And In this mode, in the case of the cold water, a pipe P is formed along the outer surface of the collection duct 14 by spiral welding or the like.
Is used as a water cooling jacket, and the cold water flows in the pipe P. The generated condensation water collects the dew condensation water 1
It is temporarily collected by a ring-shaped water receiver 15 formed at the bottom of No. 4, is guided to the outside of the collection duct 14, and is collected and supplied to the upper water tank 11 as a part of spray water. As the cold water, a part of the cold water from a refrigerator, which is a kind of hot and cold water heater, is directly supplied to the pipe P for use. The collection duct 14
Of the ring-shaped water provided under the inner surface of the collecting duct 14 by making the cross-sectional area of the exhaust duct 13 larger than the cross-sectional area of the exhaust port to reduce the wind speed and increase the contact area with the air flow. It is preferable to prevent re-scattering of the condensed water collected in the receiver 15. The cross-sectional area of the collection duct 14 is preferably about 1.2 to 2 times the cross-sectional area of the exhaust port of the exhaust pipe 13. If this ratio is too small, the wind speed lowering effect will be small, and if this ratio is too large, extra space will be required. Instead of the cold water, cold air, outside air, or makeup water may be used. In case of outside air, the water cooling jacket is not used.
【００１６】実施の形態２
この形態は,請求項４、５、６、７、８、９、１０及び
１１記載の方法発明の代表的な実施の形態であり,実施
の形態１と異なる構成は次の通りである。前記捕集ダク
ト１４内面に結露して付着した水滴が浮遊するのを前記
捕集ダクト１４内面に配置した内部ルーバー１５により
捕捉する「図２参照」。前記内部ルーバー１５を下向き
のルーバーとして、前記飽和状態の湿り空気を分流して
前記捕集ダクト１４内面に案内し、前記結露を発生させ
る。その他の回収工程は実施の形態１と同様である。Embodiment 2 This embodiment is a representative embodiment of the method invention according to claims 4, 5, 6, 7, 8, 9, 10 and 11, and is different from Embodiment 1 in the configuration. It is as follows. Water droplets that have condensed on and adhered to the inner surface of the collection duct 14 are suspended by the inner louver 15 arranged on the inner surface of the collection duct 14 (see FIG. 2). The internal louver 15 is used as a downward louver, and the saturated moist air is diverted and guided to the inner surface of the collection duct 14 to generate the dew condensation. Other recovery steps are the same as those in the first embodiment.
【００１７】実施の形態３
この形態は,請求項１０記載の方法発明の代表的な実施
の形態であり,実施の形態１と異なる構成は次の通りで
ある。前記冷却塔の方式を向流式として前記散水装置を
散水パイプとして、前記発生した結露水を前記捕集ダク
トの底部で一時収集し、この冷却塔の散水パイプに循環
水として回収し供給する「図示せず」。そのほか,前記
結露の発生工程は実施の形態１と同様である。Embodiment 3 This embodiment is a typical embodiment of the method invention according to claim 10, and the configuration different from that of the first embodiment is as follows. The cooling tower system is a countercurrent system and the sprinkler is a sprinkling pipe, and the generated dew condensation water is temporarily collected at the bottom of the collection duct, and is collected and supplied as circulating water to the sprinkling pipe of the cooling tower. Not shown. " In addition, the process of generating the condensation is the same as that of the first embodiment.
【００１８】実施の形態４
この形態は,請求項１０記載の方法発明の代表的な実施
の形態であり,実施の形態１と異なる構成は次の通りで
ある。前記冷却塔の方式を開放型の直交流式として、前
記上部水槽から散布水を充填板に散布し、外気流と直接
接触し、その潜熱作用で散布水を冷却し、前記冷却塔の
排気口から排気される空気を飽和状態の湿り空気とする
「図示せず」。そのほか,前記結露の発生工程は実施の
形態１と同様である。Embodiment 4 This embodiment is a typical embodiment of the method invention according to claim 10, and the configuration different from that of the first embodiment is as follows. The cooling tower system is an open type cross flow system, sprayed water is sprayed from the upper water tank onto the filling plate, and the sprayed water is directly contacted with the outside air flow to cool the sprayed water by its latent heat action, and the exhaust port of the cooling tower is used. The air exhausted from the air is saturated moist air "not shown". In addition, the process of generating the condensation is the same as that of the first embodiment.
【００１９】[0019]
【発明の効果】請求項１乃至１１記載の各方法発明にお
いては,冷却塔の排気口から排気される飽和状態の湿り
空気を冷水、冷風、外気風、補給水の内の少なくとも１
種の冷媒により間接的に冷却し、過飽和空気として、結
露を発生し、熱交換器(開放型の充填板を含む)の散布水
の一部として回収することにより、夏季、冬季における
渇水状態において水道水の補給が制限又は停止された場
合でも、蒸発水を回収し、その渇水に対応すると共に、
水道水による補給水量比率を少なくし、水資源の有効利
用に寄与し、水道代金のコスト低減を図ることができ
る。更に、このように回収した蒸発水を冷却塔に戻し、
散布水又は循環水に含まれる添加剤、シリカなどの不純
物の濃縮を緩和し、その水質の悪化を防止することがで
きる。殊に請求項２記載の方法発明では、冷却塔の排気
口から排気される飽和状態の湿り空気を排気筒と連なる
ミスト捕集ダクトとの内面に向けて吹き付け、この捕集
ダクトの外面に沿い流れる冷水、冷風、外気風、補給水
の内の少なくとも１種の冷媒により間接的に飽和状態の
湿り空気を冷却することにより、前記飽和状態の湿り空
気を冷水、冷風、外気風、補給水の内の少なくとも１種
の冷媒と前記捕集ダクト内で確実に間接接触させ,前記
効果を有効に発揮できる。請求項３記載の方法発明で
は、前記発生した結露水を前記捕集ダクトの底部で一時
収集し、冷却塔の散水装置に散布水又は循環水の一部と
して回収し供給することにより,水滴の飛散を防止した
状態で前記効果を有効に発揮できる。In each of the method inventions according to claims 1 to 11, the saturated moist air discharged from the exhaust port of the cooling tower is at least one of cold water, cold air, outside air, and makeup water.
Indirectly cooled by some kind of refrigerant to generate dew condensation as supersaturated air and collect it as a part of the sprayed water of the heat exchanger (including the open type packing plate). Even if the supply of tap water is limited or stopped, evaporative water is collected to respond to the drought and
It is possible to reduce the ratio of the amount of makeup water supplied by tap water, contribute to the effective use of water resources, and reduce the cost of water bill. Furthermore, the evaporated water thus recovered is returned to the cooling tower,
It is possible to alleviate the concentration of impurities such as additives and silica contained in sprayed water or circulating water, and prevent the deterioration of the water quality. Particularly, in the method invention according to claim 2, saturated humid air exhausted from the exhaust port of the cooling tower is blown toward the inner surface of the mist collecting duct connected to the exhaust pipe, and along the outer surface of the collecting duct. The saturated moist air is indirectly cooled by at least one refrigerant in flowing cold water, cold air, outside air, and makeup water to cool the saturated moist air into cold water, cold air, outside air, makeup water. It is possible to make indirect contact with at least one of the refrigerants in the collection duct without fail, and to effectively exhibit the above effects. In the method invention according to claim 3, the generated dew condensation water is temporarily collected at the bottom of the collection duct, and is collected and supplied as a part of spray water or circulating water to the sprinkler of the cooling tower, whereby water droplets are formed. The above effect can be effectively exhibited in a state where scattering is prevented.
【００２０】請求項４記載の方法発明では、前記捕集ダ
クト内面に結露して付着した水滴が浮遊するのを前記捕
集ダクト内面に接近して配置した内部ルーバーにより捕
捉することにより、水滴の飛散を防止した状態で前記効
果を有効に発揮できる。請求項５記載の方法発明では、
前記内部ルーバーで前記飽和状態の湿り空気を分流して
前記捕集ダクト内面に案内し、前記結露を発生させるこ
とにより,結露の発生率を高め、前記効果を有効に発揮
できる。請求項６記載の方法発明では、前記冷水を冷温
水器の冷水の一部として直接使用することにより,簡易
な方式により,冷却塔における蒸発水を回収できる。According to the fourth aspect of the present invention, the floating of water droplets condensed and attached to the inner surface of the collection duct is caught by the inner louver arranged close to the inner surface of the collection duct, whereby The above effect can be effectively exhibited in a state where scattering is prevented. According to the method invention of claim 5,
The internal louver diverts the saturated moist air and guides it to the inner surface of the collection duct to generate the dew condensation, thereby increasing the rate of dew condensation and effectively exhibiting the effect. According to the sixth aspect of the present invention, by directly using the cold water as a part of the cold water of the hot / cold water heater, the evaporated water in the cooling tower can be recovered by a simple method.
【００２１】請求項７記載の方法発明では、前記捕集ダ
クトの横断面積を排気筒の排出口の横断面積より大きめ
に形成し,前記捕集ダクトの内面下部に設けたリング状
の水受け内に前記結露水を一時収集させることにより、
前記捕集ダクトの横断面積を排気筒の排気口の横断面積
より大きめに形成し,風速を低下させ、前記捕集ダクト
の内面下部に設けたリング状の水受けに集められた前記
結露水の再飛散を防止すること水受け内に収集した水滴
が再度冷却塔外部に飛散することを低減できる。請求項
８記載の方法発明では、前記捕集ダクトの横断面積を排
気筒の排気口の横断面積に対して、１．２倍から２倍と
し、前記排気筒の排気口から排出される飽和状態の湿り
空気の速度を低速とすることにより、請求項７記載の方
法発明の効果をより有効に発揮できる。According to a seventh aspect of the present invention, the cross-sectional area of the collection duct is formed larger than the cross-sectional area of the exhaust port of the exhaust pipe, and a ring-shaped water receiver provided in the lower portion of the inner surface of the collection duct. By temporarily collecting the condensed water,
The cross-sectional area of the collection duct is made larger than the cross-sectional area of the exhaust port of the exhaust pipe to reduce the wind speed, and the condensed water collected in a ring-shaped water receiver provided on the lower inner surface of the collection duct. Preventing re-scattering Water droplets collected in the water receiver can be prevented from scattering again outside the cooling tower. In the method invention according to claim 8, the cross-sectional area of the collection duct is 1.2 to 2 times the cross-sectional area of the exhaust port of the exhaust stack, and the saturated state is discharged from the exhaust port of the exhaust stack. The effect of the method invention according to claim 7 can be more effectively exhibited by reducing the velocity of the moist air of 1.
【００２２】請求項９記載の方法発明では、前記捕集ダ
クトの底部で一時収集した結露水量の全蒸発水量に対す
る比率を１０乃至１５%とすることにより、前記効果を
より顕著に発揮できる。In the method invention according to claim 9, the effect can be more remarkably exhibited by setting the ratio of the amount of dew condensation water temporarily collected at the bottom of the collection duct to the total amount of evaporated water of 10 to 15%.
【００２３】請求項１０記載の方法発明では、前記冷却
塔の機種を問わず、結露水を散布水として利用し、水道
水による補給水量が少なくとも、散布水中の添加剤、シ
リカなどの不純物の濃縮を防止できる。In the method according to the tenth aspect of the present invention, regardless of the type of the cooling tower, the condensed water is used as the spray water, and the amount of makeup water by tap water is at least the concentration of the additive in the spray water and the impurities such as silica. Can be prevented.
【００２４】請求項１１記載の方法発明では、前記捕集
ダクトの高さ寸法を排気筒の高さ寸法より長めとして、
前記飽和状態の湿り空気の前記捕集ダクト内面への吹き
付け領域を前記捕集ダクトの中段から上縁部に亘る領域
として、排気流と捕集ダクトとの接触面積を大きくし、
前記結露の発生を行うことにより、前記捕集ダクト内面
に有効に排気流を吹き付け、結露する水量を確保でき
る。In the method of the eleventh aspect of the present invention, the height dimension of the collecting duct is set to be longer than the height dimension of the exhaust stack.
As a region from the middle stage of the collecting duct to the upper edge part of the region where the saturated humid air is blown to the inner surface of the collecting duct, the contact area between the exhaust flow and the collecting duct is increased,
By generating the dew condensation, the exhaust flow can be effectively blown to the inner surface of the collection duct, and the amount of dew condensation can be secured.
【図１】実施の形態１の概念図である。FIG. 1 is a conceptual diagram of a first embodiment.
【図２】実施の形態２の概念図である。FIG. 2 is a conceptual diagram of a second embodiment.
１０ 冷却塔 １１ 上部水槽 １２ 密閉型熱交換器 １３ 排気筒 １４ 捕集ダクト 10 cooling tower 11 Upper tank 12 Closed heat exchanger 13 Exhaust stack 14 Collection duct
─────────────────────────────────────────────────────
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【手続補正書】[Procedure amendment]
【提出日】平成１３年１２月２５日（２００１．１２．
２５）[Submission date] December 25, 2001 (2001.12.
25)
【手続補正１】[Procedure Amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】全文[Correction target item name] Full text
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【書類名】 明細書[Document name] Statement
【発明の名称】 冷却塔における蒸発水の回収方法Title of invention Evaporative water recovery method in cooling tower
【特許請求の範囲】[Claims]
【発明の詳細な説明】Detailed Description of the Invention
【０００１】[0001]
【産業上の利用分野】この発明は冷却塔における蒸発水
の回収方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for recovering evaporated water in a cooling tower.
【０００２】[0002]
【従来の技術】冷却塔、例えば直交流式冷却塔において
は、散布水の気化の潜熱を利用しての冷却においては散
布水の一部が蒸発し、空気側に物質移動し、その蒸発量
は熱交換する熱量と散布水の水量の蒸発潜熱により決定
される。散布水が蒸発することで散布水中の添加剤、シ
リカなどの不純物の濃度が高くなり、その水質が悪化す
る。散布水との間で熱交換する外気である空気は加熱、
加温され、排気口では飽和状態の空気となる。この空気
が加熱される温度は熱交換する熱量と空気量で定まる。
前記単位時間当りの蒸発量は、冷却塔の同時間当りの補
給水量の６５乃至７０％を占め、省水資源の観点からは
改善する余地が充分にある。2. Description of the Related Art In a cooling tower, for example, a cross flow type cooling tower, in cooling by utilizing latent heat of vaporization of spray water, a part of the spray water is evaporated and mass is transferred to the air side. Is determined by the amount of heat exchanged and the latent heat of vaporization of the amount of spray water. As the sprayed water evaporates, the concentration of impurities such as additives and silica in the sprayed water increases, and the water quality deteriorates. The air that is the outside air that exchanges heat with the sprayed water is heated,
It is heated and becomes saturated air at the exhaust port. The temperature at which this air is heated is determined by the amount of heat exchanged and the amount of air.
The amount of evaporation per unit time accounts for 65 to 70% of the amount of make-up water per unit time of the cooling tower, and there is ample room for improvement from the viewpoint of water saving resources.
【０００３】[0003]
【発明が解決しようとする課題】この発明の目的は、前
記蒸発水を回収することにより、夏季、冬季における渇
水状態において水道水の補給が制限又は停止された場合
でも、蒸発水を回収し、その渇水に対応すると共に、補
給水量比率を少なくし、水資源の有効利用に寄与し水道
代金の低減を図ることである。更に、この発明の別の目
的は、回収した蒸発水を冷却塔に戻し、散布水中の添加
剤、シリカなどの不純物の濃縮を緩和し、その水質の悪
化を防止することである。SUMMARY OF THE INVENTION An object of the present invention is to collect evaporative water to recover evaporative water even when supply of tap water is limited or stopped in a drought condition in summer and winter. It is to cope with the drought, reduce the amount of makeup water, contribute to the effective use of water resources, and reduce the water bill. Furthermore, another object of the present invention is to return the recovered evaporated water to the cooling tower, reduce the concentration of impurities such as additives and silica in the spray water, and prevent the deterioration of the water quality.
【０００４】[0004]
【課題を解決するための手段】前記課題を達成するため
に、特定発明は冷却塔の排気口から排気される飽和状態
の湿り空気を冷水、冷風、外気風、補給水の内の少なく
とも１種の冷媒により間接的に冷却し、過飽和空気とし
て、結露を発生し、散布水又は循環水の一部として回収
することを特徴とする冷却塔における蒸発水の回収方法
とする。In order to achieve the above object, the specific invention is to provide saturated moist air exhausted from an exhaust port of a cooling tower by at least one of cold water, cold air, outside air, and makeup water. The method for recovering evaporated water in a cooling tower is characterized in that it is indirectly cooled by the refrigerant of (3) above, condensed as supersaturated air, and is recovered as a part of spray water or circulating water.
【０００５】前記課題を達成するために、冷却塔の排気
口から排気される飽和状態の湿り空気を排気筒と連なる
ミスト捕集ダクトとの内面に向けて吹き付け、この捕集
ダクトの外面に沿い流れる冷水、冷風、外気風、補給水
の内の少なくとも１種の冷媒により、間接的に飽和状態
の湿り空気を冷却することを特徴とする。In order to achieve the above-mentioned object, saturated humid air exhausted from the exhaust port of the cooling tower is blown toward the inner surface of the mist collecting duct connected to the exhaust pipe, and along the outer surface of the collecting duct. It is characterized in that the moist air in a saturated state is indirectly cooled by at least one kind of refrigerant in flowing cold water, cold air, outside air, and makeup water.
【０００６】前記課題を達成するために、前記発生した
結露水を前記捕集ダクトの底部で一時収集し、冷却塔の
散水装置に散布水又は循環水の一部として回収し供給す
ることを特徴とする。In order to achieve the above object, the generated dew condensation water is temporarily collected at the bottom of the collection duct, and is collected and supplied as a part of spray water or circulating water to a water sprinkler of a cooling tower. And
【０００７】前記課題を達成するために、前記捕集ダク
ト内面に結露して付着した水滴が浮遊するのを前記捕集
ダクト内面に接近して配置した内部ルーバーにより捕捉
することを特徴とする。In order to achieve the above-mentioned object, it is characterized in that water droplets that are condensed and adhere to the inner surface of the collection duct are caught by an internal louver arranged close to the inner surface of the collection duct.
【０００８】前記課題を達成するために、前記内部ルー
バーを夫々外側が内側より低い下向きのルーバーとし
て、前記飽和状態の湿り空気を前記ルーバー内外に分流
して前記捕集ダクト内面に案内し、前記結露を発生させ
ることを特徴とする。In order to achieve the above object, the inner louvers are downward louvers whose outer sides are lower than their inner sides, and the saturated moist air is diverted into and out of the louvers and guided to the inner surface of the collection duct. It is characterized by generating dew condensation.
【０００９】前記課題を達成するために、前記冷水は冷
温水器の冷水の一部を直接使用することを特徴とする。In order to achieve the above object, the cold water is characterized by directly using a part of the cold water of a cold water heater.
【００１０】前記課題を達成するために、前記捕集ダク
トの横断面積を排気筒の排出口の横断面積より大きめに
形成し、前記捕集ダクトの内面下部に設けたリング状の
水受け内に前記結露水を一時収集させることを特徴とす
る。In order to achieve the above object, the cross-sectional area of the collecting duct is made larger than the cross-sectional area of the exhaust port of the exhaust pipe, and the water is formed in a ring-shaped water receiver provided on the lower portion of the inner surface of the collecting duct. It is characterized in that the condensed water is temporarily collected.
【００１１】前記課題を達成するために、前記捕集ダク
トの横断面積を排気筒の排気口の横断面積に対して、
１．２倍から２倍とし、前記排気筒の排気口から排出さ
れる飽和状態の湿り空気の速度を低速とすることを特徴
とする。In order to achieve the above object, the cross-sectional area of the collection duct is set to the cross-sectional area of the exhaust port of the exhaust stack,
The speed is 1.2 times to 2 times, and the speed of the saturated moist air discharged from the exhaust port of the exhaust stack is set to a low speed.
【００１２】前記課題を達成するために、前記冷却塔の
方式を直交流式、向流式の内の１種とし、この冷却塔本
体内に装填された密閉型乃至開放型熱交換器上に前記捕
集ダクトの底部で一時収集した結露水を散布することを
特徴とする。In order to achieve the above-mentioned object, the cooling tower system is one of a cross flow system and a counter flow system, and a closed type or open type heat exchanger is loaded in the cooling tower body. It is characterized in that the condensed water that is temporarily collected is sprayed at the bottom of the collection duct.
【００１３】前記課題を達成するために、前記捕集ダク
トの高さ寸法を排気筒の高さ寸法より長めとして、前記
飽和状態の湿り空気の前記捕集ダクト内面への吹き付け
領域を前記捕集ダクトの中段から上縁部に亘る領域とし
て、前記結露の発生を行うことを特徴とする。In order to achieve the above object, the height dimension of the collection duct is set to be longer than the height dimension of the exhaust stack, and the area where the saturated moist air is blown to the inner surface of the collection duct is collected. The condensation is generated as a region extending from the middle stage to the upper edge of the duct.
【００１４】[0014]
【発明の実施の形態】実施の形態１
この形態は、請求項１、２、３、６、７、８、９及び１
０記載の方法発明を含む代表的な実施の形態であり、図
１において、冷却塔１０の方式を密閉型の直交流式とし
て、上部水槽１１から散布水を密閉型熱交換器１２上に
散布し、外気流と接触し、その潜熱作用で散布水を冷却
し、この密閉型熱交換器１２内を循環する循環水を間接
的に冷却し、前記冷却塔１０の排気口を形成する送風機
１９を備えた排気筒１３から排気される空気を飽和状態
の湿り空気とする。この飽和状態の湿り空気は前記排気
筒１３と連なるミスト捕集ダクト１４の内面に向けて変
流板１７に案内されて吹きつけられ、この捕集ダクト１
４の外面に沿い流れる冷媒の１種である冷水により間接
的に冷却し、過飽和空気となって、前記捕集ダクト１４
の内面に結露を発生させる。この際、前記変流板１７に
より前記捕集ダクト１４内面への吹き付け位置はこの変
流板１７の上位、つまり前記捕集ダクト１４の中央最上
部のものほど前記捕集ダクト１４の上縁よりに吹き付
け、前記排気筒１３周辺部よりの変流板１７による吹き
つけ位置を前記捕集ダクト１４の中段よりやや低めとす
る。前記変流板１７による排気流の方向変更方法は、一
例であって、前記例に限定されない。要は排気流がより
多く前記捕集ダクト１４の内面に接触させるようにして
あれば、前記方法に限定されない。好ましくは、前記捕
集ダクト１４の高さ寸法を前記排気筒１３の高さ寸法よ
り長めとして、前記飽和状態の湿り空気の前記捕集ダク
ト１４内面への吹き付け領域を広くし、前記捕集ダクト
１４の中段から上縁部に亘る領域として、前記結露の発
生を行う。この態様では、前記冷水の場合には、捕集ダ
クト１４の外面に沿い螺旋状に溶接など配管したパイプ
Ｐを水冷ジャケットとして使用し、このパイプＰ内を前
記冷水が流れる。前記発生した結露水を前記捕集ダクト
１４の底部に形成したリング状の水受け１８で一時収集
し、これを前記捕集ダクト１４外に導き、前記上部水槽
１１に散布水の一部として回収し供給する。前記冷水と
して冷温水器の１種である冷凍機からの冷水の一部を直
接前記パイプＰに供給し使用する。前記捕集ダクト１４
の横断面積を排気筒１３の排気口の横断面積より大きめ
に形成し、風速を低下させ、かつ気流との接触面積を大
きくして、前記捕集ダクト１４の内面下部に設けたリン
グ状の水受け１８に集められた前記結露水の再飛散を防
止することが好ましい。前記捕集ダクト１４の横断面積
は前記排気筒１３の排気口の横断面積の１．２乃至２倍
程度が望ましい。この比率が小さすぎると風速低下効果
が少なく、この比率が大きすぎると場所取り資材が余計
となる。前記冷水に代えて、冷風、外気風、補給水を使
用することもある。なお、外気風の場合には、前記水冷
ジャケットは使用しない。BEST MODE FOR CARRYING OUT THE INVENTION Embodiment 1 This form is defined in claims 1, 2, 3, 6, 7, 8, 9 and 1.
1 is a typical embodiment including the method invention described in 0. In FIG. 1, the cooling tower 10 is a closed type cross-flow type, and sprayed water is sprayed from the upper water tank 11 onto the sealed heat exchanger 12. Then, the blower 19 which contacts the outside airflow, cools the spray water by its latent heat action, indirectly cools the circulating water circulating in the closed heat exchanger 12, and forms the exhaust port of the cooling tower 10. The air exhausted from the exhaust pipe 13 having the above is referred to as saturated moist air. The saturated moist air is blown while being guided by the current-changing plate 17 toward the inner surface of the mist collecting duct 14 that is continuous with the exhaust pipe 13, and the collecting duct 1
4 is indirectly cooled by cold water, which is one of the refrigerants flowing along the outer surface of No. 4, and becomes supersaturated air.
Condensation is generated on the inner surface of. At this time, the position of spraying to the inner surface of the collecting duct 14 by the current-changing plate 17 is higher than the current-changing plate 17, that is, the uppermost one in the center of the collecting duct 14 is closer to the upper edge of the collecting duct 14. Then, the blowing position of the current-changing plate 17 from the peripheral portion of the exhaust pipe 13 is set to be slightly lower than the middle stage of the collecting duct 14. The method of changing the direction of the exhaust flow by the current-changing plate 17 is an example, and is not limited to the above example. The point is that the method is not limited to the above method as long as a larger amount of exhaust flow is brought into contact with the inner surface of the collection duct 14. Preferably, the height dimension of the collection duct 14 is made longer than the height dimension of the exhaust pipe 13 to widen a region where the saturated humid air is blown to the inner surface of the collection duct 14 to form the collection duct. The condensation is generated as a region extending from the middle stage of 14 to the upper edge. In this aspect, in the case of the cold water, a pipe P, which is spirally welded along the outer surface of the collection duct 14, is used as a water cooling jacket, and the cold water flows in the pipe P. The generated condensed water is temporarily collected by a ring-shaped water receiver 18 formed at the bottom of the collecting duct 14, guided to the outside of the collecting duct 14, and collected in the upper water tank 11 as a part of sprayed water. Then supply. As the cold water, a part of the cold water from a refrigerator, which is a kind of hot and cold water heater, is directly supplied to the pipe P for use. The collection duct 14
Is formed larger than the cross-sectional area of the exhaust port of the exhaust pipe 13 to reduce the wind speed and increase the contact area with the air flow, and the ring-shaped water provided under the inner surface of the collection duct 14 It is preferable to prevent re-scattering of the condensed water collected in the receiver 18. The cross-sectional area of the collection duct 14 is preferably about 1.2 to 2 times the cross-sectional area of the exhaust port of the exhaust pipe 13. If this ratio is too small, the wind speed lowering effect will be small, and if this ratio is too large, extra space will be required. Instead of the cold water, cold air, outside air, or makeup water may be used. In the case of outside air, the water cooling jacket is not used.
【００１５】実施の形態２
この形態は、請求項４、５、６、７、８、９、１０及び
１１記載の方法発明の代表的な実施の形態であり、実施
の形態１と異なる構成は次のれ通りである。前記捕集ダ
クト１４内面に結露して付着した水滴が浮遊するのを前
記捕集ダクト１４内面に配置した内部ルーバー１５によ
り捕捉する（図２参照）。前記内部ルーバー１５を下向
きのルーバーとして、前記飽和状態の湿り空気を分流し
て前記捕集ダクト１４内面に案内し、前記結露を発生さ
せる。その他の回収工程は実施の形態１と同様である。Embodiment 2 This embodiment is a representative embodiment of the method invention according to claims 4, 5, 6, 7, 8, 9, 10 and 11, and is different from the embodiment 1 in construction. It is as follows. Water droplets that have condensed on and adhered to the inner surface of the collection duct 14 are suspended by the inner louver 15 arranged on the inner surface of the collection duct 14 (see FIG. 2). The internal louver 15 is used as a downward louver, and the saturated moist air is diverted and guided to the inner surface of the collection duct 14 to generate the dew condensation. Other recovery steps are the same as those in the first embodiment.
【００１６】実施の形態３
この形態は、請求項９記載の方法発明の代表的な実施の
形態であり、実施の形態１と異なる構成は次の通りであ
る。前記冷却塔の方式を向流式として前記散水装置を散
水パイプとして、前記発生した結露水を前記捕集ダクト
の底部で一時収集し、この冷却塔の散水パイプに循環水
として回収し供給する（図示せず）。そのほか、前記結
露の発生工程は実施の形態１と同様である。Embodiment 3 This embodiment is a representative embodiment of the method invention according to claim 9, and the configuration different from that of the first embodiment is as follows. The cooling tower system is a countercurrent system and the sprinkler device is a sprinkling pipe, and the generated dew condensation water is temporarily collected at the bottom of the collection duct, and is collected and supplied as circulating water to the sprinkling pipe of the cooling tower ( (Not shown). In addition, the step of generating the condensation is the same as that of the first embodiment.
【００１７】実施の形態４
この形態は、請求項９記載の方法発明の代表的な実施の
形態であり、実施の形態１と異なる構成は次の通りであ
る。前記冷却塔の方式を開放型の直交流式として、前記
上部水槽から散布水を充填板に散布し、外気流と直接接
触し、その潜熱作用で散布水を冷却し、前記冷却塔の排
気口から排気される空気を飽和状態の湿り空気とする
（図示せず）。そのほか、前記結露の発生工程は実施の
形態１と同様である。Embodiment 4 This embodiment is a representative embodiment of the method invention according to claim 9, and the configuration different from that of the embodiment 1 is as follows. The cooling tower system is an open type cross flow system, sprayed water is sprayed from the upper water tank onto the filling plate, and the sprayed water is directly contacted with the outside air flow to cool the sprayed water by its latent heat action, and the exhaust port of the cooling tower is used. The air exhausted from the air is saturated moist air (not shown). In addition, the step of generating the condensation is the same as that of the first embodiment.
【００１８】[0018]
【発明の効果】請求項１乃至１０記載の各方法発明にお
いては、冷却塔の排気口から排気される飽和状態の湿り
空気を冷水、冷風、外気風、補給水の内の少なくとも１
種の冷媒により間接的に冷却し、過飽和空気として、結
露を発生し、熱交換器(開放型の充填板を含む)の散布水
の一部として回収することにより、夏季、冬季における
渇水状態において水道水の補給が制限又は停止された場
合でも、蒸発水を回収し、その渇水に対応すると共に、
水道水による補給水量比率を少なくし、水資源の有効利
用に寄与し、水道代金のコスト低減を図ることができ
る。更に、このように回収した蒸発水を冷却塔に戻し、
散布水又は循環水に含まれる添加剤、シリカなどの不純
物の濃縮を緩和し、その水質の悪化を防止することがで
きる。殊に請求項２記載の方法発明では、冷却塔の排気
口から排気される飽和状態の湿り空気を排気筒と連なる
ミスト捕集ダクトとの内面に向けて吹き付け、この捕集
ダクトの外面に沿い流れる冷水、冷風、外気風、補給水
の内の少なくとも１種の冷媒により間接的に飽和状態の
湿り空気を冷却することにより、前記飽和状態の湿り空
気を冷水、冷風、外気風、補給水の内の少なくとも１種
の冷媒と前記捕集ダクト内で確実に間接接触させ、前記
効果を有効に発揮できる。請求項３記載の方法発明で
は、前記発生した結露水を前記捕集ダクトの底部で一時
収集し、冷却塔の散水装置に散布水又は循環水の一部と
して回収し供給することにより、水滴の飛散を防止した
状態で前記効果を有効に発揮できる。In each of the method inventions according to claims 1 to 10, saturated humid air exhausted from the exhaust port of the cooling tower is at least one of cold water, cold air, outside air, and makeup water.
Indirectly cooled by some kind of refrigerant to generate dew condensation as supersaturated air and collect it as a part of the sprayed water of the heat exchanger (including the open type packing plate). Even if the supply of tap water is limited or stopped, evaporative water is collected to respond to the drought and
It is possible to reduce the ratio of the amount of makeup water supplied by tap water, contribute to the effective use of water resources, and reduce the cost of water bill. Furthermore, the evaporated water thus recovered is returned to the cooling tower,
It is possible to alleviate the concentration of impurities such as additives and silica contained in sprayed water or circulating water, and prevent the deterioration of the water quality. Particularly, in the method invention according to claim 2, saturated humid air exhausted from the exhaust port of the cooling tower is blown toward the inner surface of the mist collecting duct connected to the exhaust pipe, and along the outer surface of the collecting duct. The saturated moist air is indirectly cooled by at least one refrigerant in flowing cold water, cold air, outside air, and makeup water to cool the saturated moist air into cold water, cold air, outside air, makeup water. It is possible to make indirect contact with at least one of the refrigerants in the collection duct without fail, and to effectively exhibit the above effects. In the method invention according to claim 3, the generated dew condensation water is temporarily collected at the bottom of the collection duct, and is collected and supplied as a part of spray water or circulating water to the water sprinkler of the cooling tower, whereby water droplets are formed. The above effect can be effectively exhibited in a state where scattering is prevented.
【００１９】請求項４記載の方法発明では、前記捕集ダ
クト内面に結露して付着した水滴が浮遊するのを前記捕
集ダクト内面に接近して配置した内部ルーバーにより捕
捉することにより、水滴の飛散を防止した状態で前記効
果を有効に発揮できる。請求項５記載の方法発明では、
前記内部ルーバーで前記飽和状態の湿り空気を分流して
前記捕集ダクト内面に案内し、前記結露を発生させるこ
とにより、結露の発生率を高め、前記効果を有効に発揮
できる。請求項６記載の方法発明では、前記冷水を冷温
水器の冷水の一部として直接使用することにより、簡易
な方式により、冷却塔における蒸発水を回収できる。According to the fourth aspect of the present invention, water droplets formed by dew condensation on the inner surface of the collection duct are suspended by an internal louver arranged close to the inner surface of the collection duct to collect the water droplets. The above effect can be effectively exhibited in a state where scattering is prevented. According to the method invention of claim 5,
The internal louver diverts the saturated moist air and guides it to the inner surface of the collection duct to generate the dew condensation, thereby increasing the rate of dew condensation and effectively exhibiting the effect. According to the sixth aspect of the present invention, by directly using the cold water as a part of the cold water of the hot / cold water heater, the evaporated water in the cooling tower can be recovered by a simple method.
【００２０】請求項７記載の方法発明では、前記捕集ダ
クトの横断面積を排気筒の排出口の横断面積より大きめ
に形成し、前記捕集ダクトの内面下部に設けたリング状
の水受け内に前記結露水を一時収集させることにより、
前記捕集ダクトの横断面積を排気筒の排気口の横断面積
より大きめに形成し、風速を低下させ、前記捕集ダクト
の内面下部に設けたリング状の水受けに集められた前記
結露水の再飛散を防止すること水受け内に収集した水滴
が再度冷却塔外部に飛散することを低減できる。請求項
８記載の方法発明では、前記捕集ダクトの横断面積を排
気筒の排気口の横断面積に対して、１．２倍から２倍と
し、前記排気筒の排気口から排出される飽和状態の湿り
空気の速度を低速とすることにより、請求項７記載の方
法発明の効果をより有効に発揮できる。According to the seventh aspect of the present invention, the cross-sectional area of the collecting duct is formed larger than the cross-sectional area of the discharge port of the exhaust pipe, and the inside of the ring-shaped water receiver provided in the lower portion of the inner surface of the collecting duct. By temporarily collecting the condensed water,
The cross-sectional area of the collection duct is made larger than the cross-sectional area of the exhaust port of the exhaust pipe to reduce the wind speed, and the condensed water collected in a ring-shaped water receiver provided in the lower inner surface of the collection duct. Preventing re-scattering Water droplets collected in the water receiver can be prevented from scattering again outside the cooling tower. In the method invention according to claim 8, the cross-sectional area of the collection duct is 1.2 to 2 times the cross-sectional area of the exhaust port of the exhaust stack, and the saturated state is discharged from the exhaust port of the exhaust stack. The effect of the method invention according to claim 7 can be more effectively exhibited by reducing the velocity of the moist air of 1.
【００２１】請求項９記載の方法発明では、前記冷却塔
の機種を問わず、結露水を散布水として利用し、水道水
による補給水量が少なくとも、散布水中の添加剤、シリ
カなどの不純物の濃縮を防止できる。In the method invention of claim 9, regardless of the type of the cooling tower, dew condensation water is used as spray water, and the amount of supplementary water by tap water is at least at least the concentration of additives in the spray water and impurities such as silica. Can be prevented.
【００２２】請求項１０記載の方法発明では、前記捕集
ダクトの高さ寸法を排気筒の高さ寸法より長めとして、
前記飽和状態の湿り空気の前記捕集ダクト内面への吹き
付け領域を前記捕集ダクトの中段から上縁部に亘る領域
として、排気流と捕集ダクトとの接触面積を大きくし、
前記結露の発生を行うことにより、前記捕集ダクト内面
に有効に排気流を吹き付け、結露する水量を確保でき
る。According to the tenth aspect of the invention, the height of the collecting duct is set to be longer than the height of the exhaust stack.
As a region from the middle stage of the collecting duct to the upper edge part of the region where the saturated humid air is blown to the inner surface of the collecting duct, the contact area between the exhaust flow and the collecting duct is increased,
By generating the dew condensation, the exhaust flow can be effectively blown to the inner surface of the collection duct, and the amount of dew condensation can be secured.
【図面の簡単な説明】[Brief description of drawings]
【図１】実施の形態１の概念図である。FIG. 1 is a conceptual diagram of a first embodiment.
【図２】実施の形態２の概念図である。FIG. 2 is a conceptual diagram of a second embodiment.
【符号の説明】 １０ 冷却塔 １１ 上部水槽 １２ 密閉型熱交換器 １３ 排気筒 １４ 捕集ダクト[Explanation of symbols] 10 cooling tower 11 Upper tank 12 Closed heat exchanger 13 Exhaust stack 14 Collection duct
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） // Ｆ２８Ｃ 1/08 Ｆ２８Ｃ 1/08 ─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. 7 Identification code FI theme code (reference) // F28C 1/08 F28C 1/08
Claims (11)
湿り空気を冷水、冷風、外気風、補給水の内の少なくと
も１種の冷媒により間接的に冷却し、過飽和空気とし
て、結露を発生し、散布水又は循環水の一部として回収
することを特徴とする冷却塔における蒸発水の回収方
法。1. A saturated moist air exhausted from an exhaust port of a cooling tower is indirectly cooled by at least one refrigerant selected from cold water, cold air, outside air, and makeup water to form dew condensation as supersaturated air. A method for recovering evaporative water in a cooling tower, which is generated and recovered as part of sprayed water or circulating water.
湿り空気を排気筒と連なるミスト捕集ダクトとの内面に
向けて吹き付け、この捕集ダクトの外面に沿い流れる冷
水又は冷風により、間接的に飽和状態の湿り空気を冷却
することを特徴とする請求項１記載の冷却塔における蒸
発水の回収方法。2. Saturated humid air exhausted from an exhaust port of a cooling tower is blown toward an inner surface of a mist collection duct connected to an exhaust pipe, and cold water or cold air flowing along the outer surface of the collection duct is used to The method for recovering evaporated water in a cooling tower according to claim 1, wherein the saturated moist air is indirectly cooled.
部で一時収集し、冷却塔の散水装置に散布水又は循環水
の一部として回収し供給することを特徴とする請求項１
又は２記載の冷却塔における蒸発水の回収方法。3. The generated condensed water is temporarily collected at the bottom of the collection duct, and is collected and supplied as a part of sprayed water or circulating water to a sprinkler of a cooling tower.
Or a method for recovering evaporated water in the cooling tower according to 2 above.
滴が浮遊するのを前記捕集ダクト内面に接近して配置し
た内部ルーバーにより捕捉することを特徴とする請求項
１、２又は３記載の冷却塔における蒸発水の回収方法。4. An internal louver arranged close to the inner surface of the collecting duct is used to catch the floating water droplets that are condensed and adhere to the inner surface of the collecting duct. A method for recovering evaporated water in a cooling tower according to the description.
い下向きのルーバーとして、前記飽和状態の湿り空気を
前記ルーバー内外に分流して前記捕集ダクト内面に案内
し、前記結露を発生させることを特徴とする請求項４記
載の冷却塔における蒸発水の回収方法。5. The internal louvers are downward louvers whose outer sides are lower than their inner sides, and the saturated moist air is shunted into and out of the louvers and guided to the inner surface of the collection duct to generate the dew condensation. The method for collecting evaporated water in a cooling tower according to claim 4, which is characterized in that.
用することを特徴とする請求項１、２、３、４又は５記
載の冷却塔における蒸発水の回収方法。6. The method for recovering evaporated water in a cooling tower according to claim 1, 2, 3, 4, or 5, wherein a part of the cold water of a cold water heater is directly used as the cold water.
口の横断面積より大きめに形成し,前記捕集ダクトの内
面下部に設けたリング状の水受け内に前記結露水を一時
収集させることを特徴とする請求項１、２、３、４、
５、６又は７記載の冷却塔における蒸発水の回収方法。7. The cross-sectional area of the collection duct is formed to be larger than the cross-sectional area of the exhaust port of the exhaust pipe, and the condensed water is temporarily collected in a ring-shaped water receiver provided at the lower portion of the inner surface of the collection duct. Claims 1, 2, 3, 4,
A method for collecting evaporated water in a cooling tower according to 5, 6, or 7.
口の横断面積に対して、１．２倍から２倍とし、前記排
気筒の排気口から排出される飽和状態の湿り空気の速度
を低速とすることを特徴とする１、２、３、４、５、６
又は７記載の冷却塔における蒸発水の回収方法。8. The cross-sectional area of the collection duct is 1.2 to 2 times the cross-sectional area of the exhaust port of the exhaust stack, and the saturated humid air discharged from the exhaust port of the exhaust stack is 1, 2, 3, 4, 5, 6 characterized by a low speed
Or a method of recovering evaporated water in the cooling tower according to 7.
水量の全蒸発水量に対する比率を１０乃至１５%とする
ことを特徴とする３、４、５、６、７又は８記載の冷却
塔における蒸発水の回収方法。9. The cooling tower according to claim 3, wherein the ratio of the amount of condensed water temporarily collected at the bottom of the collection duct to the total amount of evaporated water is 10 to 15%. Method of recovering evaporated water in.
内の１種とし、この冷却塔本体内に装填された密閉型乃
至開放型熱交換器上に前記捕集ダクトの底部で一時収集
した結露水を散布することを特徴とする１、２、３、
４、５、６、７、８又は９記載の冷却塔における蒸発水
の回収方法。10. The cooling tower system is one of a cross flow system and a counter flow system, and the bottom of the collection duct is placed on a closed type or open type heat exchanger loaded in the cooling tower body. 1, 2, 3, characterized by spraying the condensed water that was temporarily collected in
A method for recovering evaporated water in a cooling tower according to 4, 5, 6, 7, 8 or 9.
さ寸法より長めとして、前記飽和状態の湿り空気の前記
捕集ダクト内面への吹き付け領域を前記捕集ダクトの中
段から上縁部に亘る領域として、前記結露の発生を行う
ことを特徴とする１、２、３、４、５、６、７、８，９
又は１０記載の冷却塔における蒸発水の回収方法。11. The height dimension of the collection duct is set to be longer than the height dimension of the exhaust stack, and a region where the saturated moist air is blown to the inner surface of the collection duct is located from the middle stage to the upper edge of the collection duct. 1, 2, 3, 4, 5, 6, 7, 8, 9 are characterized in that the above-mentioned dew condensation occurs as a region extending over the part.
Alternatively, the method of collecting evaporated water in the cooling tower according to 10 above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001372333A JP2003172586A (en) | 2001-12-06 | 2001-12-06 | Evaporated water recovering method in cooling tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001372333A JP2003172586A (en) | 2001-12-06 | 2001-12-06 | Evaporated water recovering method in cooling tower |
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|---|---|
| JP2003172586A true JP2003172586A (en) | 2003-06-20 |
Family
ID=19181248
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|---|---|---|---|
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-
2001
- 2001-12-06 JP JP2001372333A patent/JP2003172586A/en active Pending
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| CN102401582B (en) * | 2010-09-15 | 2013-06-19 | 宣伯民 | Antifog water accumulator at air outlet of cooling tower |
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| JP2015040656A (en) * | 2013-08-21 | 2015-03-02 | 株式会社Ihi | Cooling tower system |
| CN103743288A (en) * | 2014-01-17 | 2014-04-23 | 中广核工程有限公司 | Water collecting device for nuclear power plants and high tower with same |
| CN103743288B (en) * | 2014-01-17 | 2016-01-20 | 中广核工程有限公司 | Used in nuclear power station water collector and comprise the high-order tower of water collector |
| CN104880118A (en) * | 2015-06-11 | 2015-09-02 | 苏跃进 | Water distribution system for cooling tower, cooling tower and water distribution method for cooling tower |
| CN109780660A (en) * | 2019-02-01 | 2019-05-21 | 西安工程大学 | A kind of band-tube type indirect fluid power spray room composite evaporative cooling air conditioner group |
| CN112484524A (en) * | 2020-11-18 | 2021-03-12 | 暨南大学 | Vertical multistage cooling wet cooling tower and cooling method |
| KR102652890B1 (en) * | 2023-09-07 | 2024-03-29 | 주식회사 제이앤지 | Potential heat using type cooling tank comprising cooling function and storage function applied at heat occuring apparatus, and heat occuring apparatus comprising the potential heat using type cooling tank comprising cooling function and storage function |
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