Performance assessment of rotating spiral-shaped baffles built-in solar air heater: 4E and sustainability analysis

IF 6.4 2区工程技术 Q1 THERMODYNAMICS

Case Studies in Thermal Engineering Pub Date : 2025-05-16 DOI:10.1016/j.csite.2025.106345

Yogeshkumar Khimsuriya , D.K. Patel , Vivek Patel , Vinay Pandit , Hashim Sahar Mohaisen , Lav Kumar Kaushik , Pranav Mehta , Himesh Patel

{"title":"Performance assessment of rotating spiral-shaped baffles built-in solar air heater: 4E and sustainability analysis","authors":"Yogeshkumar Khimsuriya , D.K. Patel , Vivek Patel , Vinay Pandit , Hashim Sahar Mohaisen , Lav Kumar Kaushik , Pranav Mehta , Himesh Patel","doi":"10.1016/j.csite.2025.106345","DOIUrl":null,"url":null,"abstract":"<div><div>Solar air heaters (SAHs) often face efficiency limitations due to heat transfer challenges. Integrating roughness elements on the absorber plate is a common strategy, but stationary roughness induces hot spots and thermal wake zones, hindering convective heat transfer. To mitigate these issues, this study investigates a modified SAH with novel rotating spiral-shaped baffles using a 4E framework—energy, exergy, exergoeconomic, and enviroeconomic perspectives. Results demonstrate superior performance, with configurations at P/e = 8 and e/H = 0.8 achieving peak useful heat gains of 156.78 W. The modified SAH attains daily average thermal, exergy, and thermohydraulic efficiencies of 29.55 %, 14.59 %, and 7.24 %, respectively. Exergoeconomic analysis yields a maximum parameter of 0.36 kWh/$ over 30 years, while enviroeconomic assessments indicate a reduction in CO<sub>2</sub> emissions from 17.14 to 5.71 kg/year, with carbon credit earnings between $102.86 and $308.57. Future research can further enhance performance through novel storage media, optimized baffle design, intelligent controls, and advanced heat exchangers.</div></div>","PeriodicalId":9658,"journal":{"name":"Case Studies in Thermal Engineering","volume":"72 ","pages":"Article 106345"},"PeriodicalIF":6.4000,"publicationDate":"2025-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Case Studies in Thermal Engineering","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2214157X25006057","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"THERMODYNAMICS","Score":null,"Total":0}

引用次数: 0

Abstract

Solar air heaters (SAHs) often face efficiency limitations due to heat transfer challenges. Integrating roughness elements on the absorber plate is a common strategy, but stationary roughness induces hot spots and thermal wake zones, hindering convective heat transfer. To mitigate these issues, this study investigates a modified SAH with novel rotating spiral-shaped baffles using a 4E framework—energy, exergy, exergoeconomic, and enviroeconomic perspectives. Results demonstrate superior performance, with configurations at P/e = 8 and e/H = 0.8 achieving peak useful heat gains of 156.78 W. The modified SAH attains daily average thermal, exergy, and thermohydraulic efficiencies of 29.55 %, 14.59 %, and 7.24 %, respectively. Exergoeconomic analysis yields a maximum parameter of 0.36 kWh/$ over 30 years, while enviroeconomic assessments indicate a reduction in CO₂ emissions from 17.14 to 5.71 kg/year, with carbon credit earnings between $102.86 and $308.57. Future research can further enhance performance through novel storage media, optimized baffle design, intelligent controls, and advanced heat exchangers.

查看原文本刊更多论文

旋转螺旋形挡板内置太阳能空气加热器的性能评估：4E和可持续性分析

太阳能空气加热器（SAHs）往往面临效率限制，由于传热的挑战。在吸收板上集成粗糙度单元是一种常见的策略，但静止的粗糙度会产生热点和热尾迹区，阻碍对流换热。为了缓解这些问题，本研究使用4E框架研究了一种带有新型旋转螺旋形挡板的改进SAH，从能源、能源、工作经济和环境经济的角度进行了研究。结果表明，在P/e = 8和e/H = 0.8的配置下，峰值有效热增益为156.78 W。改进后的SAH的日平均热效率、火用效率和热水力效率分别为29.55%、14.59%和7.24%。exgo经济分析得出30年的最大参数为0.36千瓦时/美元，而环境经济评估表明，二氧化碳排放量从17.14公斤/年减少到5.71公斤/年，碳信用收益在102.86美元至308.57美元之间。未来的研究可以通过新的存储介质、优化的挡板设计、智能控制和先进的热交换器进一步提高性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Case Studies in Thermal Engineering Chemical Engineering-Fluid Flow and Transfer Processes

CiteScore

8.60

自引率

11.80%

发文量

812

审稿时长

76 days

期刊介绍： Case Studies in Thermal Engineering provides a forum for the rapid publication of short, structured Case Studies in Thermal Engineering and related Short Communications. It provides an essential compendium of case studies for researchers and practitioners in the field of thermal engineering and others who are interested in aspects of thermal engineering cases that could affect other engineering processes. The journal not only publishes new and novel case studies, but also provides a forum for the publication of high quality descriptions of classic thermal engineering problems. The scope of the journal includes case studies of thermal engineering problems in components, devices and systems using existing experimental and numerical techniques in the areas of mechanical, aerospace, chemical, medical, thermal management for electronics, heat exchangers, regeneration, solar thermal energy, thermal storage, building energy conservation, and power generation. Case studies of thermal problems in other areas will also be considered.