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Comparative study on the multistage solar still performance utilizing PCM in variable thicknesses
Author(s) -
Ghadamgahi Majid,
AhmadiDaneshAshtiani Hossein,
Delfani Shahram
Publication year - 2020
Publication title -
international journal of energy research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.808
H-Index - 95
eISSN - 1099-114X
pISSN - 0363-907X
DOI - 10.1002/er.4941
Subject(s) - wax , paraffin wax , desalination , phase change material , environmental science , volumetric flow rate , materials science , solar still , solar energy , saline water , volume (thermodynamics) , environmental engineering , water flow , phase change , pulp and paper industry , composite material , chemistry , salinity , thermodynamics , geology , engineering , biochemistry , physics , oceanography , membrane , electrical engineering
Summary In the present experimental research, a five‐stage solar still was investigated using phase change material paraffin wax. Owing to Iran's climatic conditions and its location in a dry area and nonexistence of fresh water sources, producing this water from saline water sources is essential. In this research, thus, a multistage solar still was planned and examined as a commonly used freshwater source via (phase change material) paraffin wax. On the back of the collector absorber plate, paraffin wax (phase change material) was used as an additional energy source for the sun. The volume of water produced in different thicknesses of 2.5 cm, 5 cm, and without PCM was investigated. The study results specified that the application of phase change material paraffin wax in the thickness of 2.5 cm agent led to a 15% increase in freshwater production. The quantity of water generated in the flow rates of 0.7, 1.3, and 1.8 L/min was also studied. The highest quantity of water produced was obtained in the 1.3 L/min flow rate. Moreover, the quantity of water generated in the five stages of the desalination process was separately measured that the highest amount of production was associated with the first stage.