MODELLING AND SIMULATION OF A TYPICAL CROSS FLOW COOLING TOWER

A simplified mathematical model is developed to simulate the thermal performance of a typical 25 MW mechanical draft cross flow cooling tower. The model takes into account the reduction of water flow rate due to evaporation and the variation of air relative humidity along the tower. The model is use...

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Bibliographic Details
Published inAnnals of Faculty Engineering Hunedoara Vol. 16; no. 2; pp. 125 - 136
Main Authors Yaseen, Amr Ahmad, El-Morshedy, Salah El-Din, Elkhatib, Hesham, El-Shafei, Masoud Abd El-Hakeem, Aboul-Fotouh, Tarek Mohammad
Format Journal Article
LanguageEnglish
Published Hunedoara Faculty of Engineering Hunedoara 01.05.2018
Subjects
Computer simulation
Cooling
Cooling curves
Cooling rate
Cooling towers
Cross flow
Evaporation rate
Flow velocity
Humidity
Mathematical models
Nuclear research
Performance prediction
Relative humidity
Water flow
Tunisia
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Summary:A simplified mathematical model is developed to simulate the thermal performance of a typical 25 MW mechanical draft cross flow cooling tower. The model takes into account the reduction of water flow rate due to evaporation and the variation of air relative humidity along the tower. The model is used to predict the outlet parameters of water and air through the tower at off design conditions. This tower is used to dissipate heat resulting from fission in the core of a nuclear research reactor. The model is used to obtain the demand and characteristic curves of this tower based on the manufacturer data. To evaluate the thermal performance prediction of the present model a family of performance curves at different water flow rates and cooling ranges are plotted and compared with Merkel model curves, where Merkel model curves are the typical manufacturer curves. Typical experimental data is used to validate the present model. Also the tower capability is determined by the present and Merkel models based on the characteristic curve and performance curves methods.
ISSN:1584-2665
2601-2332