Journal ArticleDOI
Analysis of thermal performance of an improved shell and helically coiled heat exchanger
Azim Doğuş Tuncer,Azim Doğuş Tuncer,Adnan Sözen,Ataollah Khanlari,Emine Yağız Gürbüz,Emine Yağız Gürbüz,Halil İbrahim Variyenli +6 more
TLDR
In this article, a hollow tube is integrated into the shell side and cold fluid enters the heat exchanger along this tube, and the main purpose of this modification is regulating the fluid flow over the helically coiled tube and consequently obtaining more thermal energy.About:
This article is published in Applied Thermal Engineering.The article was published on 2021-02-05. It has received 41 citations till now. The article focuses on the topics: Heat recovery ventilation & Heat transfer coefficient.read more
Citations
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Journal ArticleDOI
Effects of high-dosage copper oxide nanoparticles addition in diesel fuel on engine characteristics
TL;DR: In this paper, the effect of adding high dosage of copper oxide (CuO) nanomaterials was examined, and the effect was shown to improve the performance of the nano-graphs.
Journal ArticleDOI
A comprehensive study on the influences of different types of nano-sized particles usage in diesel-bioethanol blends on combustion, performance, and environmental aspects
TL;DR: In this paper, the influence of the doping of different types of nanoparticles into the bioethanol-diesel fuel blends on the combustion, performance, and emission aspects is discussed.
Journal ArticleDOI
Synthesis of graphene oxide nanoparticles and the influences of their usage as fuel additives on CI engine behaviors
Ümit Ağbulut,Ümit Ağbulut,Erdem Elibol,Jingliang Zhang,Tuna Demirci,Suat Sarıdemir,Ali Etem Gürel,Upendra Rajak,Asif Afzal,Tikendra Nath Verma +9 more
TL;DR: In this article, the synthesis of graphene oxide (GO) nanoparticles was investigated, and the comprehensive investigation of their use along with the waste cooking oil methyl ester (WCO) and diesel fuel blend on combustion, injection, performance, and emission characteristics of a diesel engine under varying engine loads from 3 to 12 Nm with the gaps of 3 Nm at a fixed speed of 2400rpm.
Journal ArticleDOI
Synthesis of graphene oxide nanoparticles and the influences of their usage as fuel additives on CI engine behaviors
Ümit Ağbulut,Jingliang Zhang +1 more
TL;DR: In this paper , the synthesis of graphene oxide (GO) nanoparticles was investigated and the comprehensive investigation of their use along with the waste cooking oil methyl ester (WCO) and diesel fuel blend on combustion, injection, performance, and emission characteristics of a diesel engine under varying engine loads from 3 to 12 Nm with the gaps of 3 Nm at a fixed speed of 2400 rpm.
Journal ArticleDOI
Upgrading the performance of a new shell and helically coiled heat exchanger by using longitudinal fins
Azim Doğuş Tuncer,Azim Doğuş Tuncer,Adnan Sözen,Ataollah Khanlari,Emine Yağız Gürbüz,Emine Yağız Gürbüz,Halil İbrahim Variyenli +6 more
TL;DR: In this paper, the effect of adding fins over a helically coiled tube on thermal performance of a horizontal shell and helically-coiled tube heat exchanger was investigated.
References
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Journal ArticleDOI
CFD analysis of single-phase flows inside helically coiled tubes
J. S. Jayakumar,J. S. Jayakumar,Sanjay M. Mahajani,J.C. Mandal,Kannan N. Iyer,Pallippattu Krishnan Vijayan +5 more
TL;DR: The variation of local Nusselt number along the length and circumference at the wall of a helical pipe is brought out and a correlation to predict the local values of Nusselst number as a function of angular location of the point is presented.
Journal ArticleDOI
Heat transfer coefficients of shell and coiled tube heat exchangers
TL;DR: In this article, the heat transfer coefficients of shell and helically coiled tube heat exchangers were investigated experimentally, and the calculated heat transfer coefficient of tube-side were also compared to the existing correlations for other boundary conditions and a reasonable agreement was observed.
Journal ArticleDOI
Experimental analysis of heat transfer enhancement in shell and helical tube heat exchangers
TL;DR: In this article, the effect of fluid flow and geometrical parameters on heat transfer rate in shell and coiled tube heat exchangers has been investigated experimentally using Wilson plots.
Journal ArticleDOI
Impact of various metal-oxide based nanoparticles and biodiesel blends on the combustion, performance, emission, vibration and noise characteristics of a CI engine
TL;DR: In this paper, the impact of metal-oxide-based nanoparticles on the performance of a single-cylinder diesel engine has been investigated with different engine loads of 2.5, 5, 7.5 and 10 Nm.
Journal ArticleDOI
A comprehensive review on double pipe heat exchangers
TL;DR: In this paper, a review of double pipe heat exchanger has been presented, where the development procedure and heat transfer enhancement methods in aforementioned heat exchangers have been analyzed in details and correlations of mostly Nusselt number and pressure drop coefficient are also presented.
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Shivakumar,Vasudeva K Karanth +1 more