Abstract
This paper shows the results of a novel research conducted with the overall aim of developing a system that can provide continuous desalination. Productivity enhancement of solar stills is regarded as the main purpose of the investigators in desalination field. This paper represents the experimental results in a new approach of paraffin + graphene oxide nanoparticles mixture. The paraffin mixture in a semicircular, triangular and rectangular absorber with paraffin + graphene oxide of 0.1, 0.3 and 0.5 mass% has been investigated. The finding indicated that for all absorbers, the use of paraffin + graphene oxide in higher mass fractions enhances daily freshwater production. The results showed that the thermal performances are greater applying graphene oxide + paraffin of 0.5 mass% with semicircular absorber compared to triangular and rectangular absorber. The achievement of the present paper can be implemented to design more efficient absorbers for solar still parts.
Highlights
Due to various applications of phase change materials (PCMs), these materials were of high importance for researchers in recent years [1,2,3,4], especially for solar stills [5, 6]
This study was done to examine the thermal performance of Paraffin + graphene oxide in different absorbers in desalination unit
The results showed that the geometry of the absorbers is an important factor and semicircular absorber shape can be influenced more for mixture of paraffin +graphene oxide flow as the results achieving more temperature gradients
Summary
Due to various applications of phase change materials (PCMs), these materials were of high importance for researchers in recent years [1,2,3,4], especially for solar stills [5, 6]. Paraffin has been selected the most popular PCMs. owing to its low vapor pressure in melting and higher latent heat of fusion, but the paraffin thermal conductivity is low [1]. The problem can be solved by adding nanofluid such as paraffin oxide to paraffin. Phase change materials can be classified into three main groups. The main group related to this paper is liquid–solid group which can be divided into two groups, small molecular components and polymers
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