Вплив нерівномірності розподілу щільності зрошування на охолодження циркуляційної води у краплинній градирні

• Date: 2012
• Main Authors: Shraiber O.A., Dubrovskyi V.V., Pidvysotskyi O.M., Redkin V.B.
• Format: Article
• Language: Ukrainian
• Published: General Energy Institute of the National Academy of Sciences of Ukraine 2012
• Subjects: краплинна градирня; інтегрування рівнянь переносу; щільність зрошування; охолодження; циркуляційна вода.
• Online Access: https://systemre.org/index.php/journal/article/view/447
• Journal Title: System Research in Energy

We have proposed a new iteration algorithm for the integration of the equations of transfer in a countercurrent two-phase polydisperse flow as applied to the working process in a drip-type cooling tower. The calculation consists of several iterations, and each of them includes two stages: 1) integration of the equations for drops (downwards) beginning from the horizontal section, where the spraying devices are placed, 2) integration of the equations for air (from below upwards). The important advantage of this algorithm lies in the fact that the equations for air are integrated “from past to future”, and, therefore, it works over a broad range of determining parameters. The algorithm is realized in program GRAD4.We have developed a method for the comparison of variants of water-concentration distribution over the area of the horizontal section of a drip-type cooling tower and for the determination of its influence on the rate of cooling of circulation water. This method is based on the principle of conservation of the total flow rates of water and air. We have shown that the nonuniform water-concentration distribution worsens substantially the degree of water cooling in drip-type cooling towers. We may consider the results obtained as a tool for seeking the ways of improvement and optimization of the working process in drip-type cooling towers.