Work

Exploring interfacial solar evaporation heat transfer mechanisms of photothermal solar still systems

Year: 2025

Type: article

Abstract: The growing global demand for freshwater, coupled with the scarcity of freshwater resources and the environmental concerns associated with fossil fuel-based water desalination, necessitates innovative approaches to freshwater production. This paper presents a novel method for desalinating water using renewable energy sources. The proposed method involves the use of a glass chamber with a sloping roof, filled with seawater of 3.5 % salt concentration, and covered with porous filaments. These filaments facilitate the absorption of saltwater, promote air circulation, and harness solar radiation within the chamber, thereby enhancing the process of saltwater absorption and evaporation. The evaporated water vapor condenses on the sloping glass roof, and the external airflow cools the water, leading to the collection of freshwater droplets at the bottom of the chamber. This solar-powered desalination device offers a sustainable solution for regions lacking access to freshwater resources or during emergencies requiring immediate access to freshwater.

Source: Case Studies in Thermal Engineering

DOI: 10.1016/j.csite.2025.105883

Authors: Milad Haghighat, Mohammad Mahdi Entezarian, Mohsen Salimi, Majid Amidpour

Institutions: K. N. Toosi University of Technology, University of Zanjan, Niroo Research Institute

Language: English

Topic: Solar-Powered Water Purification Methods

Subfield: Renewable Energy, Sustainability and the Environment

Field: Energy

Domain: Physical Sciences

SDGs: Affordable and clean energy, Clean water and sanitation

Open Access status: gold

Estimated APC paid: $1,620