Kaniz Farhana - Academia.edu (original) (raw)

Papers by Kaniz Farhana

Research paper thumbnail of Internal energy analysis with nanofluids in header and riser tube of flat plate solar collector by CFD modelling

IOP Conference Series: Materials Science and Engineering, 2019

In this study, Computational Fluid Dynamics (CFD) modelling of internal energy with different nan... more In this study, Computational Fluid Dynamics (CFD) modelling of internal energy with different nanofluids (TiO2 and crystal nano cellulose) studied. The modelling was three dimensional under Viscous Laminar model. The base fluid for nanoparticles was 60% water+40% ethylene glycol along with individual water and ethylene glycol fluids. Volume fraction of nanofluids was 0.5% and single-phase model used. The diameter of inlet and outlet was fixed of individual model and three kinds of designing model used here. The diameter of both header and riser tubes varied whereas the number of tubes varied only for riser. The results revealed that diameter and number of tubes (riser) do not affect on the internal energy. Since internal energy only depends on different properties of the inside fluids.

Research paper thumbnail of Graphene as an Alternative Additive in Automotive Cooling System

Lecture notes in mechanical engineering, Aug 9, 2022

Research paper thumbnail of A Comprehensive Review on Graphene Nanoparticles: Preparation, Properties, and Applications

Sustainability

Graphene, with its amazing prospects and nonpareil aspects, has enticed scientists and researcher... more Graphene, with its amazing prospects and nonpareil aspects, has enticed scientists and researchers all over the globe in a significant fashion. Graphene, the super material, endlessly demonstrates some of the substantial, as well as desired, mechanical, thermal, optical, and chemical characteristics which are just about to bring about an unprecedented transformation in the science and technology field. Being derived from graphite, graphene is made of one-atom-thick, two-dimensional carbon atoms arranged in a honeycomb lattice. This Nobel-prize-winning phenomenon includes properties that may result in a new dawn of technology. Graphene, the European Union’s (EU) largest pledged project, has been extensively researched since its discovery. Several stable procedures have been developed to produce graphene nanoparticles in laboratories worldwide. Consequently, miscellaneous applications and futuristic approaches in artificial intelligence (AI)-based technology, biomedical and nanomedici...

Research paper thumbnail of Design and development of highly efficient nano fluidic flat plate solar collector

Research paper thumbnail of Comparison of Seam Strength between Dyed and Un-dyed Gabardine Apparels: A Research on Lapped and Superimposed Seam

Journal of Textile Science & Engineering, 2015

Research paper thumbnail of A Short Review of Nano-Cellulose Preparation from Textile Spinning Waste Cotton

2021 International Congress of Advanced Technology and Engineering (ICOTEN), 2021

Cotton fiber is the most used natural fiber among all other fibers as its application is not boun... more Cotton fiber is the most used natural fiber among all other fibers as its application is not bound to the restriction. Cotton cellulose is a linear biopolymer and cotton is the most abundant as well as the most popular natural fiber for preparing natural human apparel that directly produces from nature. In the process of apparel manufacturing, each year huge amount of cotton fiber turns into waste. This paper aims to evaluate the preparation of nano-cellulose or nanocrystal cellulose from this waste cotton. Therefore, the waste cotton scenario of the spinning industry, statistics of waste cotton, and nanofiber in the spinning industry studied elaborately. Besides, this review describes the nano-cellulose materials preparation techniques, cotton waste source, nano-cellulose physical structure. Nanocellulose is prepared using a variety of methods, including biological, mechanical, organic mechanical, bacterial, and enzyme processes, as well as a variety of chemicals. Nano-cellulose preparation processes with a high proportion aspect and strong thermal efficiency in this phase pave the way for alternative cotton reuse. Nano-cellulose has become commercially popular, but it cannot be used across the market at a high price, but waste cotton is the solution for the cheap end price for food supply, drug supply, army dress, and textiles. Due to the availability of waste cotton in very cheap in market and conversion to valuable product it will be a value added product.

Research paper thumbnail of Design of Intelligent Mixer Machine for Food Applications

Lecture notes in electrical engineering, Aug 11, 2022

Research paper thumbnail of An Experimental Evaluation of Specific Heat of Mono and Hybrid Nanofluids

Lecture notes in mechanical engineering, Aug 9, 2022

Research paper thumbnail of Applications of Graphene Nanomaterials in Energy Storage—A State-of-Art Short Review

Lecture notes in mechanical engineering, Aug 9, 2022

Research paper thumbnail of Business Trend Analysis of RMG Industry in Context of Bangladesh-A Case Study

International Journal of Industrial Management

Bangladesh has made a tremendous contribution to RMG (Ready Made Garment) sector since the 1970s.... more Bangladesh has made a tremendous contribution to RMG (Ready Made Garment) sector since the 1970s. Textiles and apparels consider for about 85% of the total export earnings of Bangladesh. Though it’s quite difficult to mete out the dimension of performance and objection of the RMG sector in Bangladesh but to fulfill the task this study has made a search based on the study of attainable documents. The beauty of this study lies in its way of narration, a sequential way of description. The study discovers that since its inception, the RMG industry contributed significantly to our economy especially during the last three decades. The cross-check analysis has been conducted to compare the last three decades’ export of RMG, specific garments export, GDP, market share, etc to get a lucid idea of the business trend of the RMG industry. These initiatives focus more on the establishment of sound structure, skilled manpower, enhanced market access, access to finance at the competitive interest ...

Research paper thumbnail of Numerical Studies of Graphene Hybrid Nanofluids in Flat Plate Solar Collector

2021 International Congress of Advanced Technology and Engineering (ICOTEN), 2021

This study aims to present the fundamental properties related to heat transfer of nanofluids and ... more This study aims to present the fundamental properties related to heat transfer of nanofluids and hybrid nanofluids in solar collector numerically. To deduct the energy consumption and to improve the efficiency of the flat plate solar collector, a research study was conducted to expand its wings in various pathways. Computational simulation is one of them and plays a vital role to diminish the cost before the practical experiment. In this study, graphene, CNC nanofluids, and hybrid nanofluids (CNC + graphene) were used for numerical simulations, which were transferred to the header and riser tubes of the collector. Different attributes such as internal energy, heat transfer rate, surface heat transfer coefficient, surface Nusselt number, molecular Prandtl number and skin friction coefficient of nanofluids and hybrid nanofluids were evaluated and compared with the base fluid. The geometry was prepared based on the actual model of the solar collector using a software. The numerical study reported a satisfactory enhancement of internal energy, heat transfer rate, surface heat transfer coefficient of graphene and the hybrid of graphene nanofluids. Besides, nanofluids and hybrid nanofluids performed in a stable non-dimensional number but showed a rising trend in the skin friction coefficient.

Research paper thumbnail of Energy consumption, environmental impact, and implementation of renewable energy resources in global textile industries: an overview towards circularity and sustainability

Materials Circular Economy, 2022

Research paper thumbnail of Experimental Study on the Efficiency Improvement of Flat Plate Solar Collectors Using Hybrid Nanofluids Graphene/Waste Cotton

Energies, 2022

Flat plate solar collectors can easily be termed as the most vastly studied alternative energy tr... more Flat plate solar collectors can easily be termed as the most vastly studied alternative energy transforming and generating technology of the twenty-first century. As the world is racing towards the fourth industrial revolution (Industry 4.0), more and more energy is being consumed for mega projects to be materialized. Electronic devices are not only confined to conventional intermittent and costlier electric energy, but also fuel. Solar energy is now being shared to work smart devices, transform electric energy, and operate automobiles, aeronautics, water heating, and space heating. Traditional flat plate solar collectors can only occupy 50–60% of their thermal efficiency, resulting in less heat generation and a low thermal performance because of using a common absorber made of copper tubing compared to a high conductive metal sheet (copper or aluminum). To ameliorate the thermal efficiency of the solar collector, it is imperative to find a superior alternative heat exchanger that w...

Research paper thumbnail of Analysis of Non-dimensional Numbers of Fluid Flowing Inside Tubes of Flat Plate Solar Collector

The aim of this paper is to discuss the non-dimensional numbers of fluid flowing through inside t... more The aim of this paper is to discuss the non-dimensional numbers of fluid flowing through inside the tubes of flat plate solar collectors. Empirically, to abate the cost and energy consumption or to boost up the performance and efficiency of solar collectors; computational simulation plays a vital role. In this study, CFD numerical simulation of aqueous ethylene glycol (60% water + 40%) ethylene glycol fluid flow has been done with ANSYS 15.0. Non-dimensional numbers such as surface Nusselt number, Skin friction coefficient and Prandtl number of fluids have been observed based on empirical and experimental properties. The geometry of design has been prepared using Solidworks software in accordance with the actual experimental model. The analysis revealed that the Nusselt number showed effective convection behavior, the skin friction coefficient was positive while the Prandtl numberwas large for both properties of aqueous ethylene glycol.

Research paper thumbnail of The Scenario of Textile Industry in Malaysia: A Review for Potentiality

Materials Circular Economy

This study explains the current situation and the significance of the textile and clothing indust... more This study explains the current situation and the significance of the textile and clothing industries in Malaysia, as well as how they are depicted. Textiles and clothes are the most important elements in human life and modern civilization. Furthermore, the textile industry is the foundation of industrialization for any country around the globe, and the economy of developing countries today is largely dependent on this sector. Once upon a time, Malaysian textiles and apparel were a major source of foreign cash. It is, however, presently erupting. This paper would be an adequate foundation for establishing the textile and garment business on a huge scale in Malaysia. Textile industrialization, the structure of the Malaysian textile industry, export and import states, gross domestic product (GDP) performance, energy consumption, product mix and customer, health, and safety issues have all been thoroughly addressed in this study. To summarize, the textile and garment industry has a substantial impact on Malaysian GDP, imports, and exports, as well as existing industries that produce items for global customers. Upstream textile industry numbers must be increased in tandem with downstream textile industry numbers so that the textile sector may contribute significantly to Malaysia's GDP and export-import orientation.

Research paper thumbnail of Smart Textiles and Nano-Technology: A General Overview

Journal of Textile Science & Engineering, 2015

Smart textiles are fabrics that have been designed and manufactured to include technologies that ... more Smart textiles are fabrics that have been designed and manufactured to include technologies that provide the wearer with increased functionality. These textiles have numerous potential applications, such as the ability to communicate with other devices, conduct energy, transform into other materials and protect the wearer from environmental hazards. Research and development towards wearable textile-based personal systems allowing e.g. health monitoring, protection and safety, and healthy lifestyle gained strong interest during the last few years. Smart fabrics and interactive textiles' activities include personal health management through integration, validation, and use of smart clothing and other networked mobile devices as well as projects targeting the full integration of sensors/ actuators, energy sources, processing and communication within the clothes to enable personal applications such as protection/safety, emergency and healthcare. This writing includes the origin and introduction of smart textile and integrated wearable electronics for sport wear, industrial purpose, automotive and entertainment applications, healthcare & safety, military, public sectors and new developments in smart textiles.

Research paper thumbnail of A Comprehensive Review on Efficiency Enhancement of Solar Collectors Using Hybrid Nanofluids

Energies, 2022

Because of its potential to directly transform solar energy into heat and energy, without harmful... more Because of its potential to directly transform solar energy into heat and energy, without harmful environmental effects such as greenhouse gas emissions. Hybrid nanofluid is an efficient way to improve the thermal efficiency of solar systems using a possible heat transfer fluid with superior thermo-physical properties. The object of this paper is the study the latest developments in hybrid applications in the fields of solar energy systems in different solar collectors. Hybrid nanofluids are potential fluids with better thermo-physical properties and heat transfer efficiency than conventional heat transfer fluids (oil, water, ethylene glycol) with single nanoparticle nanofluids. The research found that a single nanofluid can be replaced by a hybrid nanofluid because it enhances heat transfer. This work presented the recent developments in hybrid nanofluid preparation methods, stability factors, thermal improvement methods, current applications, and some mathematical regression analy...

Research paper thumbnail of Thermal performance of nanomaterial in solar collector: State-of-play for graphene

Journal of Energy Storage

Research paper thumbnail of Present Status of Workers in Ready- Made Garments Industries in

The Ready Made Garment (RMG) industry has been placed the largest export earnings of Bangladesh w... more The Ready Made Garment (RMG) industry has been placed the largest export earnings of Bangladesh where more than 5000 garment factories are running, employing over 4 million people of which more than 80 % workers are women. RMG industry is considered as the back bone of the country’s economy-The main strength of RMG sector in Bangladesh is poorly paid garment workers. This article depicts the wages level, age group, gender, family life and working hours of workers in RMG industries in Bangladesh. It is notable that the living situation of garments workers may change last couple of years. Nowadays their children also go to school & they can serve their old parents. Already government fixed the minimum wages for their better standard of living. Though it is not sufficient but it is improving.

Research paper thumbnail of A Short Review of Nano-Cellulose Preparation from Textile Spinning Waste Cotton

2021 International Congress of Advanced Technology and Engineering (ICOTEN), 2021

Cotton fiber is the most used natural fiber among all other fibers as its application is not boun... more Cotton fiber is the most used natural fiber among all other fibers as its application is not bound to the restriction. Cotton cellulose is a linear biopolymer and cotton is the most abundant as well as the most popular natural fiber for preparing natural human apparel that directly produces from nature. In the process of apparel manufacturing, each year huge amount of cotton fiber turns into waste. This paper aims to evaluate the preparation of nano-cellulose or nanocrystal cellulose from this waste cotton. Therefore, the waste cotton scenario of the spinning industry, statistics of waste cotton, and nanofiber in the spinning industry studied elaborately. Besides, this review describes the nano-cellulose materials preparation techniques, cotton waste source, nano-cellulose physical structure. Nanocellulose is prepared using a variety of methods, including biological, mechanical, organic mechanical, bacterial, and enzyme processes, as well as a variety of chemicals. Nano-cellulose pr...

Research paper thumbnail of Internal energy analysis with nanofluids in header and riser tube of flat plate solar collector by CFD modelling

IOP Conference Series: Materials Science and Engineering, 2019

In this study, Computational Fluid Dynamics (CFD) modelling of internal energy with different nan... more In this study, Computational Fluid Dynamics (CFD) modelling of internal energy with different nanofluids (TiO2 and crystal nano cellulose) studied. The modelling was three dimensional under Viscous Laminar model. The base fluid for nanoparticles was 60% water+40% ethylene glycol along with individual water and ethylene glycol fluids. Volume fraction of nanofluids was 0.5% and single-phase model used. The diameter of inlet and outlet was fixed of individual model and three kinds of designing model used here. The diameter of both header and riser tubes varied whereas the number of tubes varied only for riser. The results revealed that diameter and number of tubes (riser) do not affect on the internal energy. Since internal energy only depends on different properties of the inside fluids.

Research paper thumbnail of Graphene as an Alternative Additive in Automotive Cooling System

Lecture notes in mechanical engineering, Aug 9, 2022

Research paper thumbnail of A Comprehensive Review on Graphene Nanoparticles: Preparation, Properties, and Applications

Sustainability

Graphene, with its amazing prospects and nonpareil aspects, has enticed scientists and researcher... more Graphene, with its amazing prospects and nonpareil aspects, has enticed scientists and researchers all over the globe in a significant fashion. Graphene, the super material, endlessly demonstrates some of the substantial, as well as desired, mechanical, thermal, optical, and chemical characteristics which are just about to bring about an unprecedented transformation in the science and technology field. Being derived from graphite, graphene is made of one-atom-thick, two-dimensional carbon atoms arranged in a honeycomb lattice. This Nobel-prize-winning phenomenon includes properties that may result in a new dawn of technology. Graphene, the European Union’s (EU) largest pledged project, has been extensively researched since its discovery. Several stable procedures have been developed to produce graphene nanoparticles in laboratories worldwide. Consequently, miscellaneous applications and futuristic approaches in artificial intelligence (AI)-based technology, biomedical and nanomedici...

Research paper thumbnail of Design and development of highly efficient nano fluidic flat plate solar collector

Research paper thumbnail of Comparison of Seam Strength between Dyed and Un-dyed Gabardine Apparels: A Research on Lapped and Superimposed Seam

Journal of Textile Science & Engineering, 2015

Research paper thumbnail of A Short Review of Nano-Cellulose Preparation from Textile Spinning Waste Cotton

2021 International Congress of Advanced Technology and Engineering (ICOTEN), 2021

Cotton fiber is the most used natural fiber among all other fibers as its application is not boun... more Cotton fiber is the most used natural fiber among all other fibers as its application is not bound to the restriction. Cotton cellulose is a linear biopolymer and cotton is the most abundant as well as the most popular natural fiber for preparing natural human apparel that directly produces from nature. In the process of apparel manufacturing, each year huge amount of cotton fiber turns into waste. This paper aims to evaluate the preparation of nano-cellulose or nanocrystal cellulose from this waste cotton. Therefore, the waste cotton scenario of the spinning industry, statistics of waste cotton, and nanofiber in the spinning industry studied elaborately. Besides, this review describes the nano-cellulose materials preparation techniques, cotton waste source, nano-cellulose physical structure. Nanocellulose is prepared using a variety of methods, including biological, mechanical, organic mechanical, bacterial, and enzyme processes, as well as a variety of chemicals. Nano-cellulose preparation processes with a high proportion aspect and strong thermal efficiency in this phase pave the way for alternative cotton reuse. Nano-cellulose has become commercially popular, but it cannot be used across the market at a high price, but waste cotton is the solution for the cheap end price for food supply, drug supply, army dress, and textiles. Due to the availability of waste cotton in very cheap in market and conversion to valuable product it will be a value added product.

Research paper thumbnail of Design of Intelligent Mixer Machine for Food Applications

Lecture notes in electrical engineering, Aug 11, 2022

Research paper thumbnail of An Experimental Evaluation of Specific Heat of Mono and Hybrid Nanofluids

Lecture notes in mechanical engineering, Aug 9, 2022

Research paper thumbnail of Applications of Graphene Nanomaterials in Energy Storage—A State-of-Art Short Review

Lecture notes in mechanical engineering, Aug 9, 2022

Research paper thumbnail of Business Trend Analysis of RMG Industry in Context of Bangladesh-A Case Study

International Journal of Industrial Management

Bangladesh has made a tremendous contribution to RMG (Ready Made Garment) sector since the 1970s.... more Bangladesh has made a tremendous contribution to RMG (Ready Made Garment) sector since the 1970s. Textiles and apparels consider for about 85% of the total export earnings of Bangladesh. Though it’s quite difficult to mete out the dimension of performance and objection of the RMG sector in Bangladesh but to fulfill the task this study has made a search based on the study of attainable documents. The beauty of this study lies in its way of narration, a sequential way of description. The study discovers that since its inception, the RMG industry contributed significantly to our economy especially during the last three decades. The cross-check analysis has been conducted to compare the last three decades’ export of RMG, specific garments export, GDP, market share, etc to get a lucid idea of the business trend of the RMG industry. These initiatives focus more on the establishment of sound structure, skilled manpower, enhanced market access, access to finance at the competitive interest ...

Research paper thumbnail of Numerical Studies of Graphene Hybrid Nanofluids in Flat Plate Solar Collector

2021 International Congress of Advanced Technology and Engineering (ICOTEN), 2021

This study aims to present the fundamental properties related to heat transfer of nanofluids and ... more This study aims to present the fundamental properties related to heat transfer of nanofluids and hybrid nanofluids in solar collector numerically. To deduct the energy consumption and to improve the efficiency of the flat plate solar collector, a research study was conducted to expand its wings in various pathways. Computational simulation is one of them and plays a vital role to diminish the cost before the practical experiment. In this study, graphene, CNC nanofluids, and hybrid nanofluids (CNC + graphene) were used for numerical simulations, which were transferred to the header and riser tubes of the collector. Different attributes such as internal energy, heat transfer rate, surface heat transfer coefficient, surface Nusselt number, molecular Prandtl number and skin friction coefficient of nanofluids and hybrid nanofluids were evaluated and compared with the base fluid. The geometry was prepared based on the actual model of the solar collector using a software. The numerical study reported a satisfactory enhancement of internal energy, heat transfer rate, surface heat transfer coefficient of graphene and the hybrid of graphene nanofluids. Besides, nanofluids and hybrid nanofluids performed in a stable non-dimensional number but showed a rising trend in the skin friction coefficient.

Research paper thumbnail of Energy consumption, environmental impact, and implementation of renewable energy resources in global textile industries: an overview towards circularity and sustainability

Materials Circular Economy, 2022

Research paper thumbnail of Experimental Study on the Efficiency Improvement of Flat Plate Solar Collectors Using Hybrid Nanofluids Graphene/Waste Cotton

Energies, 2022

Flat plate solar collectors can easily be termed as the most vastly studied alternative energy tr... more Flat plate solar collectors can easily be termed as the most vastly studied alternative energy transforming and generating technology of the twenty-first century. As the world is racing towards the fourth industrial revolution (Industry 4.0), more and more energy is being consumed for mega projects to be materialized. Electronic devices are not only confined to conventional intermittent and costlier electric energy, but also fuel. Solar energy is now being shared to work smart devices, transform electric energy, and operate automobiles, aeronautics, water heating, and space heating. Traditional flat plate solar collectors can only occupy 50–60% of their thermal efficiency, resulting in less heat generation and a low thermal performance because of using a common absorber made of copper tubing compared to a high conductive metal sheet (copper or aluminum). To ameliorate the thermal efficiency of the solar collector, it is imperative to find a superior alternative heat exchanger that w...

Research paper thumbnail of Analysis of Non-dimensional Numbers of Fluid Flowing Inside Tubes of Flat Plate Solar Collector

The aim of this paper is to discuss the non-dimensional numbers of fluid flowing through inside t... more The aim of this paper is to discuss the non-dimensional numbers of fluid flowing through inside the tubes of flat plate solar collectors. Empirically, to abate the cost and energy consumption or to boost up the performance and efficiency of solar collectors; computational simulation plays a vital role. In this study, CFD numerical simulation of aqueous ethylene glycol (60% water + 40%) ethylene glycol fluid flow has been done with ANSYS 15.0. Non-dimensional numbers such as surface Nusselt number, Skin friction coefficient and Prandtl number of fluids have been observed based on empirical and experimental properties. The geometry of design has been prepared using Solidworks software in accordance with the actual experimental model. The analysis revealed that the Nusselt number showed effective convection behavior, the skin friction coefficient was positive while the Prandtl numberwas large for both properties of aqueous ethylene glycol.

Research paper thumbnail of The Scenario of Textile Industry in Malaysia: A Review for Potentiality

Materials Circular Economy

This study explains the current situation and the significance of the textile and clothing indust... more This study explains the current situation and the significance of the textile and clothing industries in Malaysia, as well as how they are depicted. Textiles and clothes are the most important elements in human life and modern civilization. Furthermore, the textile industry is the foundation of industrialization for any country around the globe, and the economy of developing countries today is largely dependent on this sector. Once upon a time, Malaysian textiles and apparel were a major source of foreign cash. It is, however, presently erupting. This paper would be an adequate foundation for establishing the textile and garment business on a huge scale in Malaysia. Textile industrialization, the structure of the Malaysian textile industry, export and import states, gross domestic product (GDP) performance, energy consumption, product mix and customer, health, and safety issues have all been thoroughly addressed in this study. To summarize, the textile and garment industry has a substantial impact on Malaysian GDP, imports, and exports, as well as existing industries that produce items for global customers. Upstream textile industry numbers must be increased in tandem with downstream textile industry numbers so that the textile sector may contribute significantly to Malaysia's GDP and export-import orientation.

Research paper thumbnail of Smart Textiles and Nano-Technology: A General Overview

Journal of Textile Science & Engineering, 2015

Smart textiles are fabrics that have been designed and manufactured to include technologies that ... more Smart textiles are fabrics that have been designed and manufactured to include technologies that provide the wearer with increased functionality. These textiles have numerous potential applications, such as the ability to communicate with other devices, conduct energy, transform into other materials and protect the wearer from environmental hazards. Research and development towards wearable textile-based personal systems allowing e.g. health monitoring, protection and safety, and healthy lifestyle gained strong interest during the last few years. Smart fabrics and interactive textiles' activities include personal health management through integration, validation, and use of smart clothing and other networked mobile devices as well as projects targeting the full integration of sensors/ actuators, energy sources, processing and communication within the clothes to enable personal applications such as protection/safety, emergency and healthcare. This writing includes the origin and introduction of smart textile and integrated wearable electronics for sport wear, industrial purpose, automotive and entertainment applications, healthcare & safety, military, public sectors and new developments in smart textiles.

Research paper thumbnail of A Comprehensive Review on Efficiency Enhancement of Solar Collectors Using Hybrid Nanofluids

Energies, 2022

Because of its potential to directly transform solar energy into heat and energy, without harmful... more Because of its potential to directly transform solar energy into heat and energy, without harmful environmental effects such as greenhouse gas emissions. Hybrid nanofluid is an efficient way to improve the thermal efficiency of solar systems using a possible heat transfer fluid with superior thermo-physical properties. The object of this paper is the study the latest developments in hybrid applications in the fields of solar energy systems in different solar collectors. Hybrid nanofluids are potential fluids with better thermo-physical properties and heat transfer efficiency than conventional heat transfer fluids (oil, water, ethylene glycol) with single nanoparticle nanofluids. The research found that a single nanofluid can be replaced by a hybrid nanofluid because it enhances heat transfer. This work presented the recent developments in hybrid nanofluid preparation methods, stability factors, thermal improvement methods, current applications, and some mathematical regression analy...

Research paper thumbnail of Thermal performance of nanomaterial in solar collector: State-of-play for graphene

Journal of Energy Storage

Research paper thumbnail of Present Status of Workers in Ready- Made Garments Industries in

The Ready Made Garment (RMG) industry has been placed the largest export earnings of Bangladesh w... more The Ready Made Garment (RMG) industry has been placed the largest export earnings of Bangladesh where more than 5000 garment factories are running, employing over 4 million people of which more than 80 % workers are women. RMG industry is considered as the back bone of the country’s economy-The main strength of RMG sector in Bangladesh is poorly paid garment workers. This article depicts the wages level, age group, gender, family life and working hours of workers in RMG industries in Bangladesh. It is notable that the living situation of garments workers may change last couple of years. Nowadays their children also go to school & they can serve their old parents. Already government fixed the minimum wages for their better standard of living. Though it is not sufficient but it is improving.

Research paper thumbnail of A Short Review of Nano-Cellulose Preparation from Textile Spinning Waste Cotton

2021 International Congress of Advanced Technology and Engineering (ICOTEN), 2021

Cotton fiber is the most used natural fiber among all other fibers as its application is not boun... more Cotton fiber is the most used natural fiber among all other fibers as its application is not bound to the restriction. Cotton cellulose is a linear biopolymer and cotton is the most abundant as well as the most popular natural fiber for preparing natural human apparel that directly produces from nature. In the process of apparel manufacturing, each year huge amount of cotton fiber turns into waste. This paper aims to evaluate the preparation of nano-cellulose or nanocrystal cellulose from this waste cotton. Therefore, the waste cotton scenario of the spinning industry, statistics of waste cotton, and nanofiber in the spinning industry studied elaborately. Besides, this review describes the nano-cellulose materials preparation techniques, cotton waste source, nano-cellulose physical structure. Nanocellulose is prepared using a variety of methods, including biological, mechanical, organic mechanical, bacterial, and enzyme processes, as well as a variety of chemicals. Nano-cellulose pr...