Pub Date : 2023-01-01DOI: 10.1504/ijex.2023.130943
Sudhansu S. Mishra, Taraprasad Mohapatra
A variable ratio compression ignition engine is tested experimentally for different fuel type (diesel, e-diesel and nano fuel), load (4 kg, 8 kg and 12 kg), and compression ratios (14, 16, and 18) to determine its performance (energy and exergy efficiency), emission (NOx emission), and economic characteristics (% relative cost). Multiple response optimisation is carried out using response surface methodology for maximum performance, minimum emissions and cost. 5.2 kg load, 18 CR, and nano fuel are determined as the optimal input parameters for attaining maximum energy and exergy efficiency of 24.8% and 62.9%, minimum NOx emission and % cost variation of 208.4 ppm, and -6.5 respectively.
{"title":"Energy-exergy-emission-economic performance and multi-response optimisation of a VCR CI engine using bio ethanol blended diesel fuel with Al<SUB align=\"right\">2O<SUB align=\"right\">3 nanoparticles","authors":"Sudhansu S. Mishra, Taraprasad Mohapatra","doi":"10.1504/ijex.2023.130943","DOIUrl":"https://doi.org/10.1504/ijex.2023.130943","url":null,"abstract":"A variable ratio compression ignition engine is tested experimentally for different fuel type (diesel, e-diesel and nano fuel), load (4 kg, 8 kg and 12 kg), and compression ratios (14, 16, and 18) to determine its performance (energy and exergy efficiency), emission (NOx emission), and economic characteristics (% relative cost). Multiple response optimisation is carried out using response surface methodology for maximum performance, minimum emissions and cost. 5.2 kg load, 18 CR, and nano fuel are determined as the optimal input parameters for attaining maximum energy and exergy efficiency of 24.8% and 62.9%, minimum NOx emission and % cost variation of 208.4 ppm, and -6.5 respectively.","PeriodicalId":50325,"journal":{"name":"International Journal of Exergy","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136297673","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.1504/ijex.2023.10058935
Vijay Kumar Bajpai, Aman Sharma
{"title":"Performance enhancement and exergy analysis of an aluminium reflector-assisted modification in existing PV system","authors":"Vijay Kumar Bajpai, Aman Sharma","doi":"10.1504/ijex.2023.10058935","DOIUrl":"https://doi.org/10.1504/ijex.2023.10058935","url":null,"abstract":"","PeriodicalId":50325,"journal":{"name":"International Journal of Exergy","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80863053","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.1504/ijex.2023.10053572
A. Das, A. K. Panda, S. S. Sahoo
{"title":"Experimental investigation and analyses of CI engine fuelled with different blends of waste plastic oil and diesel","authors":"A. Das, A. K. Panda, S. S. Sahoo","doi":"10.1504/ijex.2023.10053572","DOIUrl":"https://doi.org/10.1504/ijex.2023.10053572","url":null,"abstract":"","PeriodicalId":50325,"journal":{"name":"International Journal of Exergy","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76312820","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.1504/ijex.2023.10056212
Taraprasad Mohapatra, S. Mishra
{"title":"Energy-exergy-emission-economic performance and multi-response optimisation of a VCR CI engine using bio ethanol blended diesel fuel with Al2O3 nanoparticles","authors":"Taraprasad Mohapatra, S. Mishra","doi":"10.1504/ijex.2023.10056212","DOIUrl":"https://doi.org/10.1504/ijex.2023.10056212","url":null,"abstract":"","PeriodicalId":50325,"journal":{"name":"International Journal of Exergy","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77334850","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.1504/ijex.2023.10055546
Asm Sinan Karakurt N.A.
{"title":"Comparative Exergy-Based Performance Analyses and Optimisation of Combined Power Cycles","authors":"Asm Sinan Karakurt N.A.","doi":"10.1504/ijex.2023.10055546","DOIUrl":"https://doi.org/10.1504/ijex.2023.10055546","url":null,"abstract":"","PeriodicalId":50325,"journal":{"name":"International Journal of Exergy","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76999575","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.1504/ijex.2023.131484
Tawfiq Abdul Aziz Al Mughanam, Abdul Khaliq
HCCI combustion is a very promising technology as it provides low NOx and soot formations with high efficiency. In the present investigation, the performance of turbocharged HCCI engine operated with hydrogen enriched natural gas was assessed using exergy analysis. The impact of equivalence ratio, turbocharger pressure, atmospheric temperature, and hydrogen enrichment has been ascertained on the engine's energy and exergy efficiencies. Special attention is given to identification and quantification of irreversibility of combustion and heat transfer processes using the concept of entropy generation and exergy loss. It is demonstrated that combustion and heat transfer irreversibilities in HCCI engine can be reduced from 55% to 43.4% and its power output is augmented from 31.4% to 38.4% if natural gas is replaced with 100% hydrogen. Overall, the results of second law analysis for engine under consideration show that variations of operational parameters examined have considerably affected the exergy transfer, irreversibilities and efficiencies.
{"title":"Exergy analysis in an HCCI engine powered with hydrogen enriched natural gas","authors":"Tawfiq Abdul Aziz Al Mughanam, Abdul Khaliq","doi":"10.1504/ijex.2023.131484","DOIUrl":"https://doi.org/10.1504/ijex.2023.131484","url":null,"abstract":"HCCI combustion is a very promising technology as it provides low NOx and soot formations with high efficiency. In the present investigation, the performance of turbocharged HCCI engine operated with hydrogen enriched natural gas was assessed using exergy analysis. The impact of equivalence ratio, turbocharger pressure, atmospheric temperature, and hydrogen enrichment has been ascertained on the engine's energy and exergy efficiencies. Special attention is given to identification and quantification of irreversibility of combustion and heat transfer processes using the concept of entropy generation and exergy loss. It is demonstrated that combustion and heat transfer irreversibilities in HCCI engine can be reduced from 55% to 43.4% and its power output is augmented from 31.4% to 38.4% if natural gas is replaced with 100% hydrogen. Overall, the results of second law analysis for engine under consideration show that variations of operational parameters examined have considerably affected the exergy transfer, irreversibilities and efficiencies.","PeriodicalId":50325,"journal":{"name":"International Journal of Exergy","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135686603","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.1504/ijex.2023.128531
Ekaterina Yushkova, Vladimir Lebedev
Exergy pinch-analysis of the heat exchange system of the furnace of the primary oil refining unit is carried out. Composite curves are created using a mathematical model, and then the optimal structure of the heat exchange with minimal exergy losses is constructed. Exergy pinch analysis allows revealing the magnitude and location of exergy losses. In the heat exchange system of the furnace exergy loss is 9 MW. It is possible to increase the efficiency of the furnace by 18.5%. An additional heat exchanger connecting it to the oil stream is introduced for rational use of residual exergy.
{"title":"The use of pinch analysis technology to assess the energy efficiency of oil refining technologies","authors":"Ekaterina Yushkova, Vladimir Lebedev","doi":"10.1504/ijex.2023.128531","DOIUrl":"https://doi.org/10.1504/ijex.2023.128531","url":null,"abstract":"Exergy pinch-analysis of the heat exchange system of the furnace of the primary oil refining unit is carried out. Composite curves are created using a mathematical model, and then the optimal structure of the heat exchange with minimal exergy losses is constructed. Exergy pinch analysis allows revealing the magnitude and location of exergy losses. In the heat exchange system of the furnace exergy loss is 9 MW. It is possible to increase the efficiency of the furnace by 18.5%. An additional heat exchanger connecting it to the oil stream is introduced for rational use of residual exergy.","PeriodicalId":50325,"journal":{"name":"International Journal of Exergy","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135127101","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.1504/ijex.2023.133987
Fatih Akkurt, Aysel Özselçuk
{"title":"Exergoeconomic analysis of a photovoltaic plant for different panel types","authors":"Fatih Akkurt, Aysel Özselçuk","doi":"10.1504/ijex.2023.133987","DOIUrl":"https://doi.org/10.1504/ijex.2023.133987","url":null,"abstract":"","PeriodicalId":50325,"journal":{"name":"International Journal of Exergy","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136208671","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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