Article
Thermodynamics
Ravikiran Balaga, Ramji Koona, Subrahmanyam Tunuguntla
Summary: The impact of various variables on thermal conductivity and rheological behavior, such as nanoparticle weight concentration and temperature, as well as the cumulative effects of wire coil insert and twisted tape on heat transfer coefficient and friction factor characteristics, is explored. The findings show that higher content of nanoparticles increases heat transfer as well as pressure drop.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2023)
Review
Green & Sustainable Science & Technology
Younus Hamoudi Assaf, Abdulrazzak Akroot, Hasanain A. Abdul Wahhab, Wadah Talal, Mothana Bdaiwi, Mohammed Y. Nawaf
Summary: Research focuses on improving the thermal conductivity of heat exchangers by using different strategies such as inserting tapes and rings of various shapes, as well as transforming fluids into nanoliquids with nanomaterials. Factors such as torsion tape ratio, ring spacing, and flow direction impact heat transfer efficiency.
Article
Thermodynamics
Saadah Ahmad Sowi, Shahrir Abdullah, Kamaruzzaman Sopian
Summary: The study introduced a new innovative twisted tape with linearly increasing/decreasing pitch ratio combined with different nanofluids. Among the different geometries, TT LIPR 0.25 showed the highest turbulent kinetic energy value. TT LIPR was found to be the best choice under turbulent flow regime with Reynolds number >10,000, creating higher overall enhancement ratio compared to other geometries.
THERMAL SCIENCE AND ENGINEERING PROGRESS
(2021)
Article
Thermodynamics
Peijia Chen, Yueqing Zhang, Ying Qu, Tao Xu, Xin He, Baihui Gao, Ali Golzar, Navid Nasajpour-Esfahani, Maboud Hekmatifar
Summary: This study uses a two-phase simulation to examine the flow of nanofluid and hydraulicthermal analysis in a tube with a triple-perforated twisted tape (TT). It is found that using the TT can increase the heat transfer coefficient and pressure drop, with the permanent efficiency coefficient (PEC) values being greater than 1.10.
CASE STUDIES IN THERMAL ENGINEERING
(2023)
Article
Thermodynamics
H. Harish, K. Manjunath
Summary: This research compares the flow and heat transfer properties of water with circular protruded twisted-tape inserts to those with traditional twisted tapes. The study found that circular protruded twisted-tape inserts provide higher thermal enhancement and lower friction factor.
CASE STUDIES IN THERMAL ENGINEERING
(2022)
Article
Thermodynamics
Kim Leong Liaw, Jundika C. Kurnia, Agus P. Sasmito
Summary: This study investigated the effect of inserting twisted tape into a helical tube on turbulent heat transfer, finding that the insertion of twisted tape increases the intensity of secondary flow in the radial direction, resulting in higher heat transfer performance. The results also showed that for all cases, higher inlet Reynolds numbers lead to a proportional increase in heat transfer, while the friction coefficient decreases with decreasing decrement amounts.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2021)
Article
Thermodynamics
R. B. Manoram, R. Sathiya Moorthy, R. Ragunathan
Summary: The study conducted a numerical investigation on the influence of dimples in a solar collector, demonstrating that dimples can enhance thermal efficiency and reduce friction, making them an effective heat transfer enhancer.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2021)
Article
Chemistry, Multidisciplinary
Yongfeng Ju, Tiezhu Zhu, Ramin Mashayekhi, Hayder Mohammed, Afrasyab Khan, Pouyan Talebizadehsardari, Wahiba Yaici
Summary: Increasing the number of semi-twisted tapes in a heat exchanger pipe leads to enhancement in heat transfer and friction factor, which is significant for heat exchange using nanofluids.
Article
Thermodynamics
Anil Kumar, Masood Ashraf Ali, Rajesh Maithani, Naveen Kumar Gupta, Sachin Sharma, Sunil Kumar, Lohit Sharma, Robin Thakur, Tabish Alam, Dan Dobrota, Sayed M. Eldin
Summary: This research paper presents an experimental analysis on a heat exchanger tube using a newly designed perforated conical ring combined with twisted tape as inserts. The investigation analyzes various geometric and flow parameters and establishes empirical correlations for the Nusselt number and the friction factor.
CASE STUDIES IN THERMAL ENGINEERING
(2023)
Article
Energy & Fuels
Prashant Kumar, R. M. Sarviya
Summary: This paper focuses on enhancing heat transfer and thermal performance factor of tubular heat exchanger by using a novel Perforated Rectangular Cut Twisted Tape (PRCTT) and compares it with other types of twisted tapes. The analysis includes different aspects such as Nusselt number, friction factor, and perforation ratio. The results show significant enhancements in Nusselt number and thermal performance when using the PRCTT, especially in the turbulent zone. The perforation of the tape further decreases the friction factor and improves the overall thermal performance factor.
ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS
(2023)
Review
Green & Sustainable Science & Technology
Mohamed H. Mousa, Nenad Miljkovic, Kashif Nawaz
Summary: Enhancing heat transfer between fluids and walls is crucial for improving performance. By utilizing features that enhance heat transfer, equipment size can be reduced, costs minimized, and safety risks mitigated.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2021)
Article
Thermodynamics
Ibrahim Ademola Fetuga, Olabode Thomas Olakoyejo, Sogo Mayokun Abolarin, Adekunle Omolade Adelaja, Omotayo Oluwatusin, Gbeminiyi Musibau Sobamowo, Joshua Kolawole Gbegudu, Adrian Uche Onwuegbusi, Josua Petrus Meyer
Summary: This study investigates the flow and thermal characteristics in a plain tube with various inserts using a ternary nanofluid as the working fluid. The results show that the performance improves with higher thickness and width ratios, but decreases with a higher pitch ratio. The research highlights the potential application of the innovative configuration as an improved heat exchanger.
CASE STUDIES IN THERMAL ENGINEERING
(2023)
Article
Thermodynamics
Jyoti Prakash Panda, Bipin Kumar, Manoj Kumar, Anil Kumar Patil
Summary: This study investigates the impact of the length and twist ratio of twisted tape inserts on heat transfer performance in heat exchangers. The results show that the maximum heat transfer and thermo-hydraulic performance are achieved at a length ratio of 0.75 and a twist ratio of 1.5.
NUMERICAL HEAT TRANSFER PART A-APPLICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Shrikant Arunrao Thote, Netra Pal Singh
Summary: This study describes the thermo-hydraulic properties of circular tubes with a twisted tape inside, which is used to induce turbulence and enhance heat transfer. The experiment covers a range of Reynolds Numbers from 830 to 1990. The results show that the twisted tape significantly improves the frictional factor, Nusselt Number, and thermal performance factor compared to the plain tube. The tape with the lowest twist ratio (3) is found to be the most effective in terms of heat transfer augmentation. The thermal performance factor is greater than one for all the twisted tapes used in the experiments, indicating enhanced heat exchanger performance and energy savings.
FDMP-FLUID DYNAMICS & MATERIALS PROCESSING
(2023)
Article
Thermodynamics
Sumit Kr. Singh, Jahar Sarkar
Summary: Experimental studies show that the use of hybrid nanofluid and different shapes of twisted tape inserts can improve heat transfer and pressure drop characteristics, with Nusselt number and friction factor increasing with decreasing twisting ratio, increasing depth ratio, decreasing width ratio, and decreasing nanofluid inlet temperature.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2021)
Review
Agricultural Engineering
M. Shahabuddin, Md Tanvir Alam, Bhavya B. Krishna, Thallada Bhaskar, Greg Perkins
BIORESOURCE TECHNOLOGY
(2020)
Article
Thermodynamics
Manabendra Saha, Giovanni Gitto, Bassam B. Dally
EXPERIMENTAL THERMAL AND FLUID SCIENCE
(2020)
Article
Energy & Fuels
M. Shahabuddin, Sankar Bhattacharya
Summary: The study investigated the gasification behavior of bituminous coal using different reactants at varying temperatures, finding that steam gasification achieved higher carbon conversion rates and lower heating values compared to CO2 gasification. Additionally, a mixture of CO2 and steam resulted in increased yields of H-2, CO and CH4 compared to pure CO2 gasification.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Energy & Fuels
M. Shahabuddin, Sankar Bhattacharya, Srikanth Chakravartula Srivatsa
Summary: This study investigated the co-slagging characteristics of high-rank coal and biomass ashes in an entrained flow slagging gasifier. The results show that co-slagging by mixing coal and biomass ashes can significantly decrease the slagging temperature.
BIOMASS CONVERSION AND BIOREFINERY
(2023)
Article
Energy & Fuels
R. S. Gavhane, A. M. Kate, Manzoore Elahi M. Soudagar, V. D. Wakchaure, Sagar Balgude, I. M. Rizwanul Fattah, Nik-Nazri Nik-Ghazali, H. Fayaz, T. M. Yunus Khan, M. A. Mujtaba, Ravinder Kumar, M. Shahabuddin
Summary: The study found that the addition of SiO2 nano-additives can improve the combustion efficiency of a diesel engine and reduce carbon monoxide, hydrocarbon, and smoke emissions.
Article
Environmental Sciences
M. Mofijur, S. F. Ahmed, S. M. Ashrafur Rahman, S. K. Yasir Arafat Siddiki, A. B. M. Saiful Islam, M. Shahabuddin, Hwai Chyuan Ong, T. M. Mahlia, F. Djavanroodi, Pau Loke Show
Summary: Micro- and nanoplastics pose significant risks to marine organisms and human health, with cytotoxicity, acute reactions, and undesirable immune responses being main concerns. They also affect several economic sectors, calling for strategies to mitigate their impact on both the environment and economy.
ENVIRONMENTAL RESEARCH
(2021)
Article
Energy & Fuels
M. Shahabuddin, M. Mofijur, Md. Bengir Ahmed Shuvho, M. A. K. Chowdhury, M. A. Kalam, H. H. Masjuki, M. A. Chowdhury
Summary: The study investigated the corrosion behavior of automotive materials in second-generation Jatropha biodiesel. Copper showed the highest corrosion while stainless steel showed the lowest. Additionally, the viscosity, water content, and TAN of biodiesel increased significantly after the immersion test.
Article
Chemistry, Physical
M. Shahabuddin, Sankar Bhattacharya
Summary: The study found that using steam-O-2 reactant results in the highest H-2/CO ratio and the catalytic water-gas shift reaction is beneficial for maximizing hydrogen production. Supplying steam in the gasifier requires more heat energy.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Energy & Fuels
M. Shahabuddin, Sankar Bhattacharya
Summary: The study evaluated the entrained flow co-gasification of coal and biomass through thermodynamic equilibrium modeling. It was observed that the lower heating value (LHV) and cold gas efficiency (CGE) increase with temperature until reaching steady state, and pressure has a dominant effect on syngas composition at non-steady state conditions. A blend of 50% biomass showed a higher LHV and CGE compared to pure coal, indicating that biomass blending up to 50% favors gasification performance.
Review
Green & Sustainable Science & Technology
M. Shahabuddin, M. A. Alim, Tanvir Alam, M. Mofijur, S. F. Ahmed, Greg Perkins
Summary: Concentrated solar power technology has the advantage of energy storage and overcoming the intermittency of solar power, making it a promising energy option. However, challenges such as high temperature requirements, low efficiency, and non-zero emissions need to be addressed.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2021)
Article
Chemistry, Multidisciplinary
M. Shahabuddin, M. A. Kibria, Sankar Bhattacharya
Summary: This study investigates the gasification characteristics of Barapukurian bituminous coal char under CO2 and steam atmosphere, and determines the reaction order of CO2 and steam gasification.
Review
Environmental Sciences
M. Shahabuddin, M. Nur Uddin, J. I. Chowdhury, S. F. Ahmed, M. N. Uddin, M. Mofijur, M. A. Uddin
Summary: This study reviews recent developments, challenges, and the prospect of electronic waste (e-waste). It highlights the importance of country-specific standards and legislation, public awareness, effective implementation, and government incentives for developing cost-effective technologies to manage e-waste.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2023)
Review
Energy & Fuels
M. Shahabuddin, Tanvir Alam
Summary: This review critically evaluates the current status of gasification, key gasifier technologies, and the impact of solid-fuel properties on gasification performance. It suggests the co-gasification of coal, biomass, and solid waste, along with partial utilization of CO2 as a reactant. Furthermore, a technological breakthrough in carbon capture and sequestration is needed.
Article
Energy & Fuels
M. Shahabuddin, Sankar Bhattacharya
Summary: Co-gasification of renewable biomass and coal is a promising technique to increase gasification performance, reduce emissions, and partially replace coal with biomass, making the technology more sustainable.
JOURNAL OF THE ENERGY INSTITUTE
(2021)
Article
Energy & Fuels
M. Shahabuddin, M. A. Kibria, Sankar Bhattacharya
Summary: This study evaluated the pyrolysis and gasification performance of Bangladeshi Barapukurian bituminous coal using an entrained flow gasifier. The results indicate that the heating value and pollutant emissions of syngas need to be adjusted properly at temperatures above 1200 degrees Celsius when using different particle sizes of coal under various CO2 concentrations.
JOURNAL OF THE ENERGY INSTITUTE
(2021)
