Design of concrete cooling tower structures with imperfection using ANN-based simulator

2004 ◽  
pp. 163-173
Author(s):  
A Horr ◽  
S Asadsajadi ◽  
M Safi
Keyword(s):  
Cooling Tower

Application of Ozone to Spraying Water in Cooling Tower of Transformer

2018 ◽  
Vol 138 (12) ◽  
pp. 939-947
Author(s):  
Hideo Hashimoto ◽  
Koh Hashiguchi ◽  
Hideki Fukui ◽  
Yusaku Ono ◽  
Mika Nakatoge ◽  
...  
Keyword(s):  
Cooling Tower

Case study: Theoretical calculation model and variable condition analysis research on the water-splashing noise for natural draft wet cooling towers

2020 ◽  
Vol 68 (2) ◽  
pp. 137-145
Author(s):  
Yang Zhouo ◽  
Ming Gao ◽  
Suoying He ◽  
Yuetao Shi ◽  
Fengzhong Sun
Keyword(s):  
Theoretical Model ◽  
Sound Pressure Level ◽  
Water Droplet ◽  
Water Distribution ◽  
Sound Pressure ◽  
Cooling Tower ◽  
Distribution Patterns ◽  
Calculation Model ◽  
Pressure Level ◽  
Cooling Towers

Based on the basic theory of water droplets impact noise, the generation mechanism and calculation model of the water-splashing noise for natural draft wet cooling towers were established in this study, and then by means of the custom software, the water-splashing noise was studied under different water droplet diameters and water-spraying densities as well as partition water distribution patterns conditions. Comparedwith the water-splashing noise of the field test, the average difference of the theoretical and the measured value is 0.82 dB, which validates the accuracy of the established theoretical model. The results based on theoretical model showed that, when the water droplet diameters are smaller in cooling tower, the attenuation of total sound pressure level of the water-splashing noise is greater. From 0 m to 8 m away from the cooling tower, the sound pressure level of the watersplashing noise of 3 mm and 6 mm water droplets decreases by 8.20 dB and 4.36 dB, respectively. Additionally, when the water-spraying density becomes twice of the designed value, the sound pressure level of water-splashing noise all increases by 3.01 dB for the cooling towers of 300 MW, 600 MW and 1000 MW units. Finally, under the partition water distribution patterns, the change of the sound pressure level is small. For the R s/2 and Rs/3 partition radius (Rs is the radius of water-spraying area), when the water-spraying density ratio between the outer and inner zone increases from 1 to 3, the sound pressure level of water-splashing noise increases by 0.7 dB and 0.3 dB, respectively.

Studi kinerja cooling tower unit amoniak dan urea pada sistem utilitas industri petrokimia

2020 ◽  
Vol 26 (1) ◽  
pp. 37-41
Author(s):  
Enggal Nurisman ◽  
Zulfa Syafira ◽  
Fatina Shania
Keyword(s):  
Cooling Tower ◽  
Thermal Cooling

Setiap industri petrokimia memerlukan kebutuhan steam dan air sebagai unit penunjang prosesnya. Untuk meningkatkan efisiensi penggunaan air dalam sistem utilitas diperlukan cooling tower sehingga air pendingin dapat digunakan kembali  selama proses berlangsung. Penggunaan cooling tower dalam industri dinilai penting, sehingga perlu peninjauan mengenai evaluasi kinerja cooling tower. Evaluasi kinerja cooling tower dilakukan berdasarkan perhitungan  jumlah losses, neraca massa dan neraca panas, efisiensi termal, serta efisiensi kerja untuk mengetahui kondisi dan kinerja dari cooling tower dalam proses pendinginan. Hal ini dapat menjadi pertimbangan teknis  pihak industri untuk operasional maupun perawatan lebih lanjut. Setelah melalui pengamatan di lapangan, diperoleh hasil perhitungan aktual yang menunjukkan efisiensi thermal cooling tower pada unit amoniak dan urea berkisar antara 74%-78,70%. dan masih sesuai dengan  efisiensi termal secara desain  sebesar 74 % dan 75,82 %. Sedangkan efisiensi kerja cooling tower unit amoniak maupun unit urea berdasarkan data aktualnya, yaitu berkisar 71,429%-83,537% dan sesuai dengan data desainnya yaitu 71,4 %. Berdasarkan hasil perhitungan tersebut, kinerja cooling tower masih beroperasi dengan baik dan masih layak digunakan dalam proses industri

Numerical investigation of swirl effects on a short natural draft dry cooling tower under windless and crosswind conditions

2021 ◽  
Vol 188 ◽  
pp. 116628 ◽  
Author(s):  
Yuchen Dai ◽  
Yuanshen Lu ◽  
Alexander Y. Klimenko ◽  
Ying Wang ◽  
Kamel Hooman
Keyword(s):  
Numerical Investigation ◽  
Cooling Tower ◽  
Natural Draft ◽  
Dry Cooling Tower ◽  
Dry Cooling

scholarly journals Efficient cooling tower operation at alkaline pH for the control of Legionella pneumophila and other pathogenic genera

2021 ◽  
pp. 117047
Author(s):  
I.S.M. Pinel ◽  
P.M. Hankinson ◽  
D.H. Moed ◽  
L.J. Wyseure ◽  
J.S. Vrouwenvelder ◽  
...  
Keyword(s):  
Legionella Pneumophila ◽  
Cooling Tower ◽  
Alkaline Ph
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