Numerical Simulation in Atmospheric Water Generator By Ansys Fluent

Document Type : Original Article

Authors

1 BS Student, Department of Aerospace Engineering, Amirkabir University of Technology, Tehran, Iran

2 Associate Professor, Department of Aerospace Engineering, Amirkabir University of Technology, Tehran, Iran

3 Sales Manager, Shole Sanat Manufacturing and Engineering Company, Tehran, Iran

Abstract

Water crisis and providing water is one of the most important problems that humans are facing. There are several ways for water extraction, depending on population and resources. In this simulation, water is extracted by a cooling tower from humid air. Humid air enters the buried pipes with fans. Then the air reaches the cooling tower. Because of the difference in temperature between air and pipes, air temperature decreases. After this process, there is an amount of water extracted from humid air. The extracted water can be used as drinkable water or for agricultural purposes. In this project, we simulate air flow by Ansys Fluent. Then, by using air condition formulas, combined with the numerical solution, the amount of extracted water can be calculated. In addition, in the first hours of the day, because the temperature difference is more than at the end of the day, the amount of extracted water is different throughout a day. We can find out that in the second half of the day, the air is cooler than the tower, so the air is cooling the tower and preparing the system for the next day.
 

Keywords


[1]  J. JanatKhah, A Review of the process of water extraction from air humidity, a new and practical method for drinking water supply, Scientific Journal of Engineering Studies, Vol. 38, pp. 63-72, 2018. (in Persian)
[2] Sh. Heydari, F. Imani, A Study of the Energy Consumption of an Underground Building in Comparison with a Similar Model on the Surface in Tehran, Yazd, and Tabriz, Iranian Architecture Studies Quarterly, No. 13, Spring and Summer 2019. (in Persian)
[3] M. Bazargan, M. Ahmadi, Production of fresh water or use of underground cooling of humid air and solar energy, Journal of Renewable and New Energies, Vol. 1, pp. 5-15, 2014. (in Persian)
[4]   M. Mafi, Evaluation of fresh water extraction from air humidity using the cooling system of buried pipes, 22nd Annual International Conference on Mechanical Engineering, 2014. (in Persian)
[5]   A. JanZadeh, Extraction of Al from the Air Using the Temperature of Depth of Earth, Journal of water and Soil Conservation, Vol. 25, No. 2, 2018. (in Persian)
[6]  Water production calculation table, Accessed 15 September 2020; www.awaintl.com.{Carey, 1998 #8}
[7] C. Borgnakke, GJ. Van Wylen , RE. Sonntag, Fundamentals of Thermodynamics, 7th Edition, pp. 530–548, 2009.
 [8]  H. Jarimi, R. Powell and S. Riffat; Review of sustainable methods for atmospheric water harvesting, International Journal of Low-Carbon Technologies, Vol. 15, pp. 253-276 2019.
[9]   J. Lindblom, B. Nordell; Water production by underground condensation of humid air, Desalination, Vol. 189, pp. 248-260, 2006.
[10] J. Lindblom, B. Nordell; Underground condensation of humid air for drinking water production and subsurface irrigation, Desalination, Vol. 203, pp. 417-434, 2007.
[11] JD. Anderson.; Fundamentals of Aerodynamics, 7nd Edition, pp. 475–564, 2001.
[12] K. Pontious, B. Weidner, N. Guerin, A. Dates, O. Pierrakos and K. Altaii; Design of an Atmospheric Water Generator: Harvesting Water Out of Thin Air, IEEE Systems and Information Engineering Design Symposium, 2016.
[13] K. Patel, J. Patel, H. Raval, Potential Study of Atmospheric Water Generator (AWG) for Humid Climatic Conditions of Eastern States in India, Renewable Energy and Climate Change, pp. 239-248, 2020.
[14] Weather Atlas, Weather forecast and Climate information, Accessed 15 September 2020; weather-atlas.com.