A TECHNIQUE FOR CALCULATION OF THERMOHYDRAULIC AND MASS-SIZED PARAMETERS OF A COOLING SYSTEM BASED ON A DRY COOLING TOWER
Abstract
A technique for calculation of thermohydraulic and mass-sized parameters of a cooling system based on a dry cooling tower and applied in power units is described. The calculations were performed for the heat load on a tower of 1000 MW. The height of the concrete tower was 180 m. Heat exchange column, made from steel ribbed galvanized pipes with the diameter of 22×1.5 mm and a length of 20 m had standard dimensions: width – 2.4 m, height – 20 m. Determination of the minimum reduced costs for the studied parameters allowed justifying the choice of the best values in the cooling system of the power unit. The minimum reduced costs correspond to 4-row bundle with 2-way traffic pattern chilled water. The optimal parameters of fin match the height of the rib – 7 mm fin step – 3.5 mm, the distance between the finned tubes – 2 mm. The optimal number of columns on a heat exchange cooling tower is 600 pcs., with cooling of the water in a cooling tower at 10 °C. The analysis of changing of mass-sized and cost values has been carried out and the alternative design of the cooling system for the power unit with the capacity of 1200 MW is proposed
About the Authors
P. K. Nagula
Joint Institute for Power and Nuclear Research – Sosny of the National Academy of Sciences of Belarus
Belarus
Ph. D. (Engineering), Head of Laboratory
Belarus
Ph. D. (Engineering), Head of Laboratory
A. E. Sinkevich
Joint Institute for Power and Nuclear Research – Sosny of the National Academy of Sciences of Belarus
Belarus
Ph. D. (Engineering), Assistant Professor, Leading Researcher
Belarus
Ph. D. (Engineering), Assistant Professor, Leading Researcher
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