Analysis of an infrared-assisted triple-flow prototype solar drying system with nano-embedded absorber coating: An experimental and numerical study

Ataollah Khanlari and Azim Doğuş Tuncer

Renewable Energy, 2023, vol. 216, issue C

Abstract: In this study, the impact of combined usage of infrared heater and nano-improved absorber coating in the triple-flow solar dryer (TFSD) has been analyzed. In the first stage of the study, a newly developed baffle configuration in the triple-flow solar air collector (SAC) has been numerically analyzed utilizing computational fluid dynamics. The new configuration was compared numerically with the conventional collector. Considering the numerical results, a triple-flow SAC with perforated baffles was manufactured and coupled with a drying room. In the experimental part, a conventional TFSD, an infrared-assisted TFSD and an infrared-assisted TFSD with iron (Fe) nano-embedded absorber coating (industrial matt black paint) have been examined. According to the experimentally obtained findings, combined usage of infrared heater and nano-improved paint decreased the drying period by 40% compared to the conventional TFSD. Thermal and exergetic efficiencies of the triple-flow collector were upgraded in the ranges of 14.62–16.94% and 31.19–37.72%, respectively using nano-coating. The mean specific energy consumption values were gained in the range of 4.18–4.53 kWh/kg. Moreover, energy efficiency values of the dryer were attained between 32.18 and 40.84% for the tested three configurations. It must be stated that the mean difference between experimental and numerical outlet air temperatures of the SAC was found as 6.2%.

Keywords: Solar drying; Triple-flow; Infrared; Perforated baffles; Nano-enhanced absorber (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S096014812301039X
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:216:y:2023:i:c:s096014812301039x

DOI: 10.1016/j.renene.2023.119125

Access Statistics for this article

Renewable Energy is currently edited by Soteris A. Kalogirou and Paul Christodoulides

More articles in Renewable Energy from Elsevier
Bibliographic data for series maintained by Catherine Liu ().