An Efficient Cooling Tower for a Stationary Engine
01 Oct 2020-Vol. 573, Iss: 1, pp 012017
About: The article was published on 2020-10-01 and is currently open access. It has received None citations till now. The article focuses on the topics: Cooling tower & Stationary engine.
References
More filters
TL;DR: The methode LMED (difference d'enthalpie logarithmique moyenne) as mentioned in this paper is a methode NUT-efficacite for the conception de tours de refroidissement.
Abstract: Developpement de la methode NUT-efficacite pour la conception de tours de refroidissement: introduction de l'enthalpie de l'air sature en parametre et definition du nombre d'increments correspondant a la precision desiree Presentation de la methode LMED (difference d'enthalpie logarithmique moyenne) et comparaison des deux methodes sur des exemples
199 citations
TL;DR: In this article, the effect of ambient humidity and temperature on the performance of cooling towers employing the Merkel, e-NTU, and Poppe methods of analysis is evaluated. And the importance of using a particular method of analysis when evaluating the performance characteristics of a certain fill material and subsequently employing the same analytical approach to predict cooling tower performance is stressed.
Abstract: The heat rejected and water evaporated in mechanical and natural draft cooling towers are critically evaluated by employing the Merkel, Poppe, and e-number-of-transfer-units (e-NTU) methods of analysis, respectively, at different operating and ambient conditions. The importance of using a particular method of analysis when evaluating the performance characteristics of a certain fill material and subsequently employing the same analytical approach to predict cooling tower performance is stressed. The effect of ambient humidity and temperature on the performance of cooling towers employing the Merkel, e-NTU, and Poppe methods of analysis are evaluated.
184 citations
TL;DR: In this article, a mathematical model for a counterflow wet cooling tower is derived, which is based on one-dimensional heat and mass balance equations using the measured heat transfer coefficient.
131 citations
TL;DR: In this article, a mathematical model of the performance of a cooling tower is presented, consisting of two interdependent boundary-value problems, a total of 9 ODE, and the algorithm of self-consistent solution.
93 citations
TL;DR: In this paper, the authors presented a detail model of counter flow wet cooling towers and compared the model with the commonly described models to obtain the values of number of transfer units (NTU) and tower effectiveness.
Abstract: Cooling towers are one of the largest heat and mass transfer devices that are in common use. In this paper, we present a detail model of counter flow wet cooling towers. The authenticity of the model is checked by experimental data reported in the literature. The values of number of transfer units (NTU) and tower effectiveness (e) obtained from the model were compared with the commonly described models. Appreciable difference in NTU and e values is found if the resistance to heat transfer in the water film and non-unity of Lewis number is considered in the calculations. The results demonstrate that the errors in calculating the tower effectiveness could be as much as 15 percent when considering the effect of air-water interface temperature. A procedure for the use of the model in designing and rating analyses of cooling towers is demonstrated through example problems. The limiting performance of the cooling towers; that is effectiveness equal to one, is explained in terms of air-approach temperature. The model is also used for obtaining the maximum possible mass-flow rate ratio of water-to-air, for different operating conditions.
81 citations