Jameel T. Al-Naffakh, Mohammed Al-fahham, Qahtan A. Abed
{"title":"Experimental Investigate the Effect of Burner Geometry on the Operation Window of the Burner","authors":"Jameel T. Al-Naffakh, Mohammed Al-fahham, Qahtan A. Abed","doi":"10.3844/erjsp.2019.74.77","DOIUrl":"https://doi.org/10.3844/erjsp.2019.74.77","url":null,"abstract":"The purpose of this paper is to conduct an experimental study of a swirl burner with different lengths for a fixed diameter. Three models of rim length (5 cm, 10 cm and 15 cm) were taken. The results show that any change in the ratio of length to diameter will affect the flame position and structure of the downstream. It turns out that the flame settles near the edge as the rim length increases. The result indicates that increasing the length of the burner neck will reduce the structure of the swirl and weaken it, thus increasing the incidence of flashback phenomenon. The operating window of three burner neck models was studied above. It was found that the 5 cm rim has an equivalent ratio of (0.38-0.82) and for the 10 cm rim that is equivalent ratio (0.39-0.84), as well as for the rim 15 cm in equivalent ratio (0.4-0.83) with air velocity stabilization. For the above three models. Through the equivalent ratio of the above models. It was found that the 10 cm rim gave a larger operating window and therefore higher stability than the other two models.","PeriodicalId":274115,"journal":{"name":"Energy Research Journal","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133966502","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The Energy of the Sea Must Begin to be Massively Extracted","authors":"N. Petrescu, F. Petrescu","doi":"10.3844/erjsp.2019.56.73","DOIUrl":"https://doi.org/10.3844/erjsp.2019.56.73","url":null,"abstract":"The present paper is intended to be a plea for the extraction of energy from the seas and oceans because this energy is very large quantity from an objective point of view and in addition it is clean, renewable and sustainable, friendly and totally non-dangerous, being a very high energy which it is permanently lost, energy from which if we extract only a small amount we get enough energy for the entire planet's needs in very good and convenient conditions, without risking having nuclear residues or losses, emanations or even uncontrolled explosions that can occur at existing nuclear power plants. The seas and oceans of the planet cover about three-quarters of the total surface of our planet so that the extraction of the energy of the seas and oceans is really a permanent urge and necessity that we should see it and take it into account. The immense advantage of the energy extracted from the waters of the seas and the oceans is the constant of its production, that is to say, the extraction of a constant amount of energy, a fact that no longer meets with other energy sources, than perhaps with nuclear energy.","PeriodicalId":274115,"journal":{"name":"Energy Research Journal","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126564272","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
H. Musa, Daniel Eric, A. Hassan, B. Usman, N. F. Isa, Adam Salihu Alhassan
{"title":"Optimized Biodiesel Production from jatropha curcas oil","authors":"H. Musa, Daniel Eric, A. Hassan, B. Usman, N. F. Isa, Adam Salihu Alhassan","doi":"10.3844/erjsp.2021.39.44","DOIUrl":"https://doi.org/10.3844/erjsp.2021.39.44","url":null,"abstract":"Corresponding Author: Haruna Musa Department of Pure and Industrial Chemistry, Bayero University, Kano, Nigeria Email: hmusa.chm@buk.edu.ng Abstract: In this study, a mathematical model for the trans-esterification reaction of Jatropha curcas seed Oil (JCO) was developed using Response Surface Methodology (RSM) in terms of some operational variables, namely: temperature (50 to 80°C), catalyst concentration (0.7 to 1% in relation to oil mass) and methanol/oil ratio (3:1-9:1), at fixed reaction time (90 min) and mixing intensity. Biodiesel was produced by trans-esterification of J. curcas seed oil with methanol using NaOH as catalyst. Optimum biodiesel yield of 88.64% was obtained at 7:1 molar ratio of methanol/oil, reaction temperature of 80°C and 0.8% catalyst loading. The biodiesel produced at 80°C, 7:1 methanol/oil ratio and 0.9% catalyst loading when blended with petro-diesel (B20) gave the highest Cetane number of 81.83. The results obtained indicated that the reaction temperature, methanol/oil ratio and catalyst concentration have significant effects on both the Cetane number and yield of biodiesel. Thus, the mathematical model developed can be used in the optimization and simulation of biodiesel yield during trans-esterification of vegetable oil within the range of the parameters studied.","PeriodicalId":274115,"journal":{"name":"Energy Research Journal","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123909501","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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