JPS625100A - Water cooling tower - Google Patents
Water cooling towerInfo
- Publication number
- JPS625100A JPS625100A JP14386385A JP14386385A JPS625100A JP S625100 A JPS625100 A JP S625100A JP 14386385 A JP14386385 A JP 14386385A JP 14386385 A JP14386385 A JP 14386385A JP S625100 A JPS625100 A JP S625100A
- Authority
- JP
- Japan
- Prior art keywords
- water
- air
- cooling section
- temperature
- damper
- 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
Abstract
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は冷水塔の改良に関するものである。[Detailed description of the invention] [Industrial application field] The present invention relates to improvements in cooling water towers.
第3図は使用されている冷水塔である。図中(1)は冷
水塔、(2)は乾式冷却部、(3)は湿式冷却部、(4
)はファン、(51,(81はダンパ、(7)は水、(
8)は冷水塔に流入する空気、+9) +1冷水塔より
放出する空気である。Figure 3 shows the cooling tower in use. In the figure, (1) is a cooling tower, (2) is a dry cooling section, (3) is a wet cooling section, and (4) is a dry cooling section.
) is the fan, (51, (81 is the damper, (7) is the water, (
8) is the air flowing into the cooling tower, +9) +1 is the air released from the cooling tower.
図に於て乾式冷却部(2)内には、多数のフィン付管が
垂直方向に並設され管内を水(7)が流通し、管外を水
(7)の流れに直交して空気゛(8)が通過するように
構成されている。又湿式冷却部(3)は内部に充填物を
詰めた充填塔で上部から落下する水(7)により表面が
濡れた充填物に、側方から送られる空気(8)が接触し
その際の気化の潜熱で水を冷却せしめるように構成され
ている。又(5)lE5)はルーバダンパで、その開閉
により乾式冷却部(3)及び湿式冷却部を通過する夫々
の空気量を制御しうるようになっている。In the figure, inside the dry cooling section (2), a large number of finned tubes are arranged vertically in parallel, water (7) flows inside the tubes, and air flows outside the tubes at right angles to the flow of water (7).゛(8) is configured so that it passes through. In addition, the wet cooling section (3) is a packed tower filled with packing material, and air (8) sent from the side comes into contact with the packing material whose surface is wetted by water (7) falling from the top. It is configured to cool the water using the latent heat of vaporization. Further, (5) lE5) is a louver damper, and by opening and closing the louver damper, the amount of air passing through the dry cooling section (3) and the wet cooling section can be controlled.
ところで上記冷水塔において、冬期外気温の低い時や、
湿度の高い時は、冷水塔上部より排出する空気中の水蒸
気が凝縮して白煙状のミストとな怜、それが甚しい場合
は視公害の要因として環境浄化上の問題となっている。By the way, in the above-mentioned cooling tower, when the outside temperature is low in winter,
When the humidity is high, the water vapor in the air discharged from the top of the cooling tower condenses and forms a white smoke-like mist, which in severe cases causes visual pollution and poses an environmental purification problem.
本発明は上記問題点を解消するためになされたもので、
冷水塔からの過度のミスト発生を抑えるための制御方法
を提供しようとするものである。The present invention was made to solve the above problems, and
The purpose of this invention is to provide a control method for suppressing excessive mist generation from a cooling tower.
一般に前記冷水塔において、冷水塔(1)の放出空気(
9)は、乾式冷却部(2)を通過してきた外気と同量の
水蒸気を含有するいわば屹き空気と、湿式冷却部(3)
において冷却水を蒸発させ、相対湿度100%に近く水
蒸気を含有した湿り空気との混合体であるため、放出空
気(9)が外気に放出され、大気中に拡散する過程でそ
の温度が下降すると、その際の外気の温度や相対湿度な
どの気象条件に応じて、放出空気中の水蒸気が凝縮して
ミストを発生するのである。一般に外気が高温で乾燥状
態にあればミストは発生し難く、低温で高湿度であれば
ミストは発生しやすい。従って放出空気(9)中の水蒸
気量を検出し、その時点の外気条件に応じて水蒸気量を
コントロールしうれば、ミストの発生はかなりの程度抑
制できるが、放出空気中の水蒸気量の検出その他いろい
ろ困難な面がある。それに冷水塔の機能からみて水の出
側温度がそのためにパラつくのは好ましくない。In general, in the cooling tower, the discharge air of the cooling tower (1) (
9) is the so-called floating air containing the same amount of water vapor as the outside air that has passed through the dry cooling section (2), and the wet cooling section (3).
Since the cooling water is evaporated in the air and is a mixture with humid air containing water vapor with a relative humidity of nearly 100%, the released air (9) is released into the outside air and its temperature decreases as it diffuses into the atmosphere. Depending on the weather conditions such as the temperature and relative humidity of the outside air, the water vapor in the emitted air condenses and generates mist. Generally, if the outside air is hot and dry, it is difficult to generate mist, and if the outside air is cold and humid, it is easy to generate mist. Therefore, if the amount of water vapor in the released air (9) can be detected and the amount of water vapor can be controlled according to the outside air conditions at that time, the generation of mist can be suppressed to a considerable extent. There are many difficult aspects. In addition, considering the function of the cooling tower, it is undesirable for the temperature at the outlet of the water to fluctuate due to this.
以上の知見を許に発明者は種々実験を重ね、鋭意検討の
結果、本発明において冷却塔の水の出側温度を所定温度
に設定し、この温度を検出して常に水の出側温度を上記
所定扇度内に保持するように、前記放出空気における乾
き空気と湿り空気との混合比を変化させるような制御方
法を開発した。Based on the above knowledge, the inventor conducted various experiments and as a result of intensive study, in the present invention, the temperature at the outlet side of the water of the cooling tower is set to a predetermined temperature, and this temperature is detected to constantly maintain the temperature at the outlet side of the water. We have developed a control method that changes the mixing ratio of dry air and humid air in the emitted air so as to maintain it within the predetermined degree.
すなわち水の出口側温度が所定温度を超えれば、ダンパ
(5)を閉じ、(6)を開けて放出空気中の湿り空気量
を増し、逆に水の出口側温度が降下すれば、ダンパ(5
)を開き、(6)を閉じて湿り空気量を減少させるので
ある。In other words, if the temperature on the outlet side of water exceeds a predetermined temperature, the damper (5) is closed and damper (6) is opened to increase the amount of humid air in the discharged air, and conversely, if the temperature on the outlet side of water falls, the damper ( 5
) is opened and (6) is closed to reduce the amount of humid air.
[作 用]
本発明において、冷水塔の乾式冷却部を通過する空気量
と、湿式冷却部を通過する空気量とを制御し、放出空気
中の乾き空気と湿り空気との混合比を変えることによっ
て、放出空気中の水蒸気の量をコントールしうるように
構成したので、冷水塔の放出空気によるミストの発生は
従来に比べ大幅に減少した。[Function] In the present invention, the amount of air passing through the dry cooling section of the cooling tower and the amount of air passing through the wet cooling section are controlled to change the mixing ratio of dry air and humid air in the discharged air. As a result, the amount of water vapor in the discharged air can be controlled, so the generation of mist due to the discharged air from the cooling tower has been significantly reduced compared to the conventional method.
[発明の実施例〕
第1図は本発明の一実施例を示す冷水塔の構成図、第2
図はダンパ開度制御フローチャートで、図中(1)〜(
9)は従来装置と同一部品、T、、T、は水の入側及び
出側の温度、Zl、Z2はルー六ダンパf5)、 f6
1の夫々の開度、TLは水温度下限、THは水温度上限
を示している。[Embodiment of the Invention] Fig. 1 is a block diagram of a cooling water tower showing an embodiment of the present invention.
The figure is a damper opening control flowchart, with (1) to (
9) are the same parts as the conventional device, T, , T are the temperatures on the water inlet and outlet sides, Zl, Z2 are the Lux dampers f5), f6
1, TL indicates the lower limit of the water temperature, and TH indicates the upper limit of the water temperature.
図においてT1は40℃、T2は27℃、TLは25℃
、THは29℃に設定し、実験により放出空気(9)に
よりミストを発生しない乾き空気と湿り空気の混合比す
なわちルーパダンパ(5]、(6)の開度(%)を決定
する。第2図に示すフローチャートは、このようにして
得られた制御の実施例を示すものである。なi冷水塔の
水出側温度T2を検出し、ダンパの開度を変える上記一
連の制御は自動的に行われる。In the figure, T1 is 40℃, T2 is 27℃, and TL is 25℃.
, TH is set at 29° C., and the mixing ratio of dry air and humid air that does not generate mist by the released air (9), that is, the opening degree (%) of the looper dampers (5) and (6), is determined by experiment. The flowchart shown in the figure shows an example of the control obtained in this way.The above series of controls that detect the temperature T2 of the water outlet side of the cooling water tower and change the opening degree of the damper are automatically performed. It will be held in
上記実施例においては、T2検出による制御対象はダン
パ(5L(61であるが、ファン(4)の回転数、ファ
ンのピッチ角を制御することによって上記目的を達する
ことができる。In the above embodiment, the object to be controlled by T2 detection is the damper (5L (61), but the above purpose can be achieved by controlling the rotation speed of the fan (4) and the pitch angle of the fan.
又ダンパの開度は任意に設定することができる。Further, the opening degree of the damper can be set arbitrarily.
本発明により冷水塔の水出側温度を所定温度範囲内に保
持し、その放出空気中の水蒸気量を制御しうるので、放
出空気によろミストの発生が抑えられ、環境改善の上で
大きな効果が期待されている。According to the present invention, it is possible to maintain the water outlet temperature of the cooling tower within a predetermined temperature range and control the amount of water vapor in the discharged air, thereby suppressing the generation of mist in the discharged air, which is highly effective in improving the environment. is expected.
第1図は本発明の一実施例を示す冷水塔の構成図、第2
図はダンパ開度制御のフローチャート、第3図は従来の
冷水塔の構成図である。
図中(1)は冷水塔、(2)は乾式冷却部、(3)は湿
式冷却部、(4)はファン、(5)、(6)はダンパ、
(7)は水、(8)は冷水塔流入空気、(9)は放出空
気、T1は冷水塔水入側温度、T2は同出側温度、TL
は水出側温度下限、THは同上限、2..22はダンパ
開度である。Fig. 1 is a block diagram of a cooling water tower showing one embodiment of the present invention;
The figure is a flowchart of damper opening degree control, and FIG. 3 is a block diagram of a conventional cooling water tower. In the figure, (1) is a cooling tower, (2) is a dry cooling section, (3) is a wet cooling section, (4) is a fan, (5) and (6) are dampers,
(7) is water, (8) is air flowing into the cooling water tower, (9) is discharged air, T1 is temperature at the water inlet of the water tower, T2 is temperature at the outlet side, TL
is the lower limit of the water outlet temperature, TH is the upper limit of the same temperature, 2. .. 22 is the damper opening degree.
Claims (1)
する乾式冷却部と、水と空気を直接接触させて水の蒸発
潜熱により水を冷却する湿式冷却部とを具備する冷水塔
において、上記乾式冷却部と湿式冷却部とに夫々開度を
自在に変更しうるダンパを備え、検出した冷水塔水出側
温度により上記ダンパの夫々の開度を制御しうるように
構成したことを特徴とする冷水塔。A cooling water tower comprising a dry cooling section that brings water and air into direct contact and cools the water using the temperature difference therebetween, and a wet cooling section that brings water and air into direct contact and cools the water using the latent heat of vaporization of the water, The dry cooling section and the wet cooling section are each equipped with a damper whose opening degree can be freely changed, and the opening degree of each of the dampers can be controlled based on the detected temperature on the water outlet side of the cooling water tower. A cold water tower.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14386385A JPS625100A (en) | 1985-07-02 | 1985-07-02 | Water cooling tower |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14386385A JPS625100A (en) | 1985-07-02 | 1985-07-02 | Water cooling tower |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS625100A true JPS625100A (en) | 1987-01-12 |
Family
ID=15348731
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14386385A Pending JPS625100A (en) | 1985-07-02 | 1985-07-02 | Water cooling tower |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS625100A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63179456U (en) * | 1987-05-14 | 1988-11-21 | ||
JPS63179457U (en) * | 1987-05-14 | 1988-11-21 | ||
CN104165532A (en) * | 2014-07-31 | 2014-11-26 | 中化工程沧州冷却技术有限公司 | Air cooling-wet cooling combined type water-saving fog-dispersing cooling tower |
-
1985
- 1985-07-02 JP JP14386385A patent/JPS625100A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63179456U (en) * | 1987-05-14 | 1988-11-21 | ||
JPS63179457U (en) * | 1987-05-14 | 1988-11-21 | ||
CN104165532A (en) * | 2014-07-31 | 2014-11-26 | 中化工程沧州冷却技术有限公司 | Air cooling-wet cooling combined type water-saving fog-dispersing cooling tower |
CN104165532B (en) * | 2014-07-31 | 2016-07-06 | 中化工程沧州冷却技术有限公司 | Air cooling clammy association type water saving fog dispersal cooling tower |
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