al-Tajer, A., Alawee, W., Dhahad, H., Omara, Z. (2024). Modeling and analysis of thermoelectric atmospheric water generation in the economic city of Iraq. , 42(7), 959-977. doi: 10.30684/etj.2024.145961.1671
Ammar M. al-Tajer; Wissam H. Alawee; Hayder A. Dhahad; Zakaria M. Omara. "Modeling and analysis of thermoelectric atmospheric water generation in the economic city of Iraq". , 42, 7, 2024, 959-977. doi: 10.30684/etj.2024.145961.1671
al-Tajer, A., Alawee, W., Dhahad, H., Omara, Z. (2024). 'Modeling and analysis of thermoelectric atmospheric water generation in the economic city of Iraq', , 42(7), pp. 959-977. doi: 10.30684/etj.2024.145961.1671
al-Tajer, A., Alawee, W., Dhahad, H., Omara, Z. Modeling and analysis of thermoelectric atmospheric water generation in the economic city of Iraq. , 2024; 42(7): 959-977. doi: 10.30684/etj.2024.145961.1671

Modeling and analysis of thermoelectric atmospheric water generation in the economic city of Iraq

Engineering and Technology Journal
Volume 42, Issue 7, July 2024, Pages 959-977    PDF (2.24 M)
Document Type: Research Paper
DOI: 10.30684/etj.2024.145961.1671
Authors
Ammar M. al-Tajer* 1; Wissam H. Alawee2; Hayder A. Dhahad3; Zakaria M. Omara4
1Petroleum Engineering Dept., College of Engineering, University of Kerbala, Karbala, 56001, Iraq.
2Control and Systems Engineering Dept., University of Technology-Iraq, Alsina’a street, 10066 Baghdad, Iraq.
3Mechanical Engineering Dept., University of Technology-Iraq, Alsina’a street, 10066 Baghdad, Iraq.
4Mechanical Engineering Dept., Faculty of Engineering, Kafrelsheikh University, Kafrelsheikh, Egypt.
Abstract
Atmospheric Water Generation assumes substantial significance as an innovative remedy for addressing water scarcity and augmenting water resilience. This technology facilitates water extraction directly from the atmosphere, presenting a sustainable and decentralized approach to water supply. The investigation into the feasibility of attaining the dew point temperature for a heatsink operating in the climatic conditions of Basra was conducted using Fluent 22.1 software. The minimum dew point temperature under extreme conditions was determined to be 10.52℃. A thermoelectric device was a primary component in cooling the moisture-laden air to produce water from atmospheric air. Simulations were executed using two complementary and two integrated heatsinks under turbulent airflow conditions ranging from 4 to 20 m/s. The results indicated an inverse relationship between heat distribution within the heatsink and fluid flow velocity, emphasizing the crucial role of airflow passage arrangement in the condensation process. Enhancing the heatsink's surface area and reducing airflow quantity proved effective in achieving the dew point temperature. The lowest temperature attained was 9.2℃, featuring intersecting heat exchangers with a flow velocity of 4 m/s. The result indicated that altering the flow pattern affects the condensation process's surface temperature by as much as 38%, while the rise in pressure difference can reach 20%. Under the same operational conditions, the difference in thermal conductivity between two distinct heat exchanger configurations, attributed to pressure variations, is notably 8%. The study concludes that the Qurna region benefits from favorable weather conditions, encompassing temperature and relative humidity, thereby enabling water generation from atmospheric air, notwithstanding the consideration of the dew point temperature as a limiting factor.

Highlights
  • Environmental conditions in Qurna, Basra, were analyzed for atmospheric water generation
  • Fluent 22 software was used to simulate feasible temperatures for condensation
  • Two airflow patterns were tested for effectiveness in temperature and pressure reduction
  • Changing airflow patterns altered condensation surface temperatures by up to 38%
Keywords
Atmospheric Water Generation; Atmospheric Water Harvesting Technologies; Thermoelectric Fresh Water Generator; Thermoelectric; Dew point
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