Publication detail

Efficiency improvement of the solar chimneys by insertion of hanging metallic tubes in the collector: Experiment and computational fluid dynamics simulation

Rezaei, Loghman Saeidi, Samrand Sapi, Andras Senoukesh, M. R. Abdollahi Grof, Gyula Chen, Wei-Hsin Konya, Zoltan Klemes, Jiri Jaromir

Original Title

Efficiency improvement of the solar chimneys by insertion of hanging metallic tubes in the collector: Experiment and computational fluid dynamics simulation

Type

journal article in Web of Science

Language

English

Original Abstract

The solar chimney power plant (SCPP) is a straightforward and clean technique to generate electricity from solar radiation. However, this technology still faces major challenges, such as low efficiency, which has hindered its industrialization. This study experimentally develops a novel collector design to improve the solar chimney collector's efficiency. The new design includes metallic tubes as solar radiation absorbers hung from the canopy of the collector. The metallic tubes are open at the top and sealed with transparent sheets at the bottom to decrease the solar radiation reflected into the ambient air. Experimental and 3-D computational fluid dynamics (CFD) analyses are performed to validate the new design. The effects of hanging metallic tubes on temperature and velocity distribution are explored. The temperature increased by about 5 K at the chimney inlet, causing a roughly 8% rise in collector efficiency due to the fact that metallic tubes operate as an extended surface. The impact of various tube geometries on solar chimneys' efficiency is examined. The CFD findings reveal that the metallic tube geometry variation has considerably impacted the collector's efficiency. Thus, the collector efficiency is increased by changing tube diameter by around 33.7%, similar to changing tube length by 30%.

Keywords

CFD simulation; Collector efficiency; Hung metallic tubes; Solar chimney; Solar radiation

Authors

Rezaei, Loghman; Saeidi, Samrand; Sapi, Andras; Senoukesh, M. R. Abdollahi; Grof, Gyula; Chen, Wei-Hsin; Konya, Zoltan; Klemes, Jiri Jaromir

Released

20. 8. 2023

Publisher

ELSEVIER SCI LTDTHE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND

Location

ELSEVIER SCI LTDTHE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND

ISBN

0959-6526

Periodical

Journal of Cleaner Production

Number

415

State

United Kingdom of Great Britain and Northern Ireland

Pages count

15

URL

https://www.sciencedirect.com/science/article/pii/S0959652623018504?via%3Dihub

BibTex

@article{BUT187611,
  author="Rezaei, Loghman and Saeidi, Samrand and Sapi, Andras and Senoukesh, M. R. Abdollahi and Grof, Gyula and Chen, Wei-Hsin and Konya, Zoltan and Klemes, Jiri Jaromir",
  title="Efficiency improvement of the solar chimneys by insertion of hanging metallic tubes in the collector: Experiment and computational fluid dynamics simulation",
  journal="Journal of Cleaner Production",
  year="2023",
  number="415",
  pages="15",
  doi="10.1016/j.jclepro.2023.137692",
  issn="0959-6526",
  url="https://www.sciencedirect.com/science/article/pii/S0959652623018504?via%3Dihub"
}