Nirendra Nath Mustafi

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Rajshahi University of Engineering and Technology · Department of Mechanical Engineering

The utilization of phase change material (PCM) as a thermal heat storage medium is particularly among the most lucrative approaches available. Solar energy is a renewable resource that has a lot of promise and can help meet the world's expanding energy needs, even though it is sporadic and possesses a moderate density, it requires an appropriate st...

In the northern and southern portions of Bangladesh, the two principal crops are rice and potatoes. The following paper compares the irrigation expenses for these two crops utilizing diesel pumps, grid-powered electric pumps, and solar water pumps. Bangladesh, the nation with the densest population in the world, have a total population of around 17...

This paper presents a comprehensive numerical investigation aimed at enhancing the energy efficiency of an internal combustion engine through exhaust heat recovery using thermoelectric generators (TEGs). The study focuses on the design and analysis of two distinct hot-side heat exchangers; one with a square cross-section and the other with a hex...

The utilization of phase change material (PCM) as a thermal heat storage medium is particularly among the most lucrative approaches available. Solar energy is a renewable resource that has a lot of promise and can help meet the world's expanding energy needs, even though it is sporadic and possesses a moderate density, it requires an appropriate st...

This paper presents a comprehensive numerical investigation aimed at enhancing the energy efficiency of an internal combustion engine through exhaust heat recovery using thermoelectric generators (TEGs). The study focuses on the design and analysis of two distinct hot-side heat exchangers; one with a square cross-section and the other with a hex...

In the northern and southern portions of Bangladesh, the two principal crops are rice and potatoes. The following paper compares the irrigation expenses for these two crops utilizing diesel pumps, grid-powered electric pumps, and solar water pumps. Bangladesh, the nation with the densest population in the world, have a total population of around 17...

In this study, a solar-energy-driven high performance water purification system is designed, fabricated, and examined, which may be useful for remote areas with limited access to grid electricity and underground freshwater. This research aims to enhance the performance of a conventional solar still (double-slope type) by creating vacuum inside the...

In this study, a solar-energy-driven high performance water purification system is designed, fabricated, and examined, which may be useful for remote areas with limited access to grid electricity and underground freshwater. This research aims to enhance the performance of a conventional solar still (double-slope type) by creating vacuum inside the...

The main objective of this study is to design an Earth-to-Air-Heat Exchanger (EAHX) to be installed in an office room based on CFD analysis. This is done by first performing a CFD analysis of an Earth to Air Heat exchanger to observe the effects of relevant parameters on the outlet temperature. Then based on these observations, two geometric config...

The high rate of commercial energy consumption is always a major concern in today's world. Particularly the space heating and cooling energy consumption needs a renewable approach. Traditionally this sector appears to be a giant energy consumer and obviously, it has a large impact on the environment. One method that can resolve these issues is the...

Hydrogen is generally considered as an ideal non-polluting future energy carrier because it releases energy and water as a byproduct on combustion. Besides, hydrogen possesses the highest energy density on mass basis compared to any other fuel. However, hydrogen production in a sustainable and environmentally friendly way still remains a challenge....

One of the most efficient ways to store thermal energy is to use phase change material (PCM) as an energy storage medium. In addition to helping to fulfill the world's growing energy needs, as renewable source solar energy can be a huge potential which needs a suitable storage method because it is intermittent and has a low density. Phase transitio...

The use of oxygenated fuels, including ethanol, methanol, diethyl ether (DEE), and dimethyl ether (DME) in CI engines has emerged as an effective way to reduce CO, HC, and PM emissions. DEE, in particular, has significant potential to be used in CI engines. Unlike DME, it exists as a liquid state at room temperature and pressure, making its handlin...

Fossil-fuel-based transportation has raised several global concerns such as ever-increasing demand for petroleum oils, their high prices and exhaustible reserves, and the associated environmental (global warming, climate change) and health degradation. Hence, the world is facing challenges to find sustainable solutions to these major issues. Adapta...

This research examines and measures the ecological implications of EVs' mass use in Bangladesh, particularly emissions from charging the lead acid batteries (LABs) used by the vehicles using grid electricity and environmental pollution from the unregulated recycling of these vehicles' batteries. This study evaluated that about 14 kilotons of CO2 we...

Vehicular emissions make significant contribution to the total ambient airborne pollutants. Global warming and human health concerns are motivating researchers to come out with newer ways of controlling air pollution effectively. On the other hand, there are significant challenges in complying with current and upcoming vehicle emission regulations,...

The integration of storage technologies into the hybrid energy system (HES) offers significant stability in delivering electricity to a remote community. In addition, the benefits of using storage devices for achieving high renewable energy (RE) contribution to the total energy supply are also paramount. The present study provides a detailed review...

In this experimental study, a prototype laser ignited engine was developed and fuelled with hydrogen enriched compressed natural gas (HCNG; mixture of H2 and CNG). Engine performance, emissions and combustion characteristics were compared for laser ignition (LI) and spark ignition (SI) modes. The maximum brake torque (MBT) timing was employed to re...

Increasing global demand of fossil fuel and harmful pollutant emitted by petroleum-fuelled internal combustion (IC) engines are two major concern for Indian transport sector, which require an immediate action to explore the alternative fuels such as biofuels, biodiesel, alcohols, etc. This book is based on such alternative fuels and covers differen...

Natural gas (NG) is considered as one of the most attractive alternative fuels for vehicles due to its clean-burning characteristics. Rapid growth of urbanization and industrialization has multiplied transport fuel demand worldwide. Vehicle population particularly in metropolitan cities has grown exponentially. Adverse effects of vehicular emission...

Unmanned Aerial Vehicles (UAVs) have been extensively used for a wide range of applications since World War-II. UAVs are used for several defence purposes such as surveillance, communication, terrain mapping, reconnaissance, and attack. In this chapter, we discuss reciprocating internal combustion engine as a propulsion system for UAVs and the chal...

This book covers alternative fuels and their utilization strategies in internal combustion engines. The main objective of this book is to provide a comprehensive overview of the recent advances in the production and utilization aspects of different types of liquid and gaseous alternative fuels. In the last few years, methanol and DME have gained si...

Compression ignition (CI) engines are mainly fuelled by diesel-like high cetane fuels, and they have higher overall efficiency due to higher compression ratio compared to their spark ignition (SI) engine counterparts. However, modern diesel engines are more expensive, complicated, and emit high nitrogen oxides (NOx) and particulate matter (PM). Sim...

Global demand for conventional petroleum fuels for powering transport vehicles is enormous and is increasing sharply with time. However, depleting petroleum reserves, and negative impacts of vehicular emissions on human health remain the most important concerns, which motivate researchers to look for alternative and eco-friendly fuels for the trans...

In the coastal area of Bangladesh, there is a scarcity of pure drinking water due to the presence of salt in water. For purifying the water, desalination process is the most common process. This project aims at studying and having a practical application of desalination process of salty water using solar energy without any electricity or external p...

As the conventional sources of energy dying out sharply, the trends to find out alternative as well as ecofriendly sources of energy getting much more importance. Among the renewable energy sources, biogas is the distinct one that is produced from different wastes and at the same time generates energy with divergent applications. In this study, cow...

Co-pyrolysis technology gain much popularity in recent years compared to other thermochemical conversion techniques due to its environmental and socio-economic advantages. The present study focuses on the liquid fuel production through co-pyrolysis of polythene waste and rice straw in varying composition and characterization of the liquid products....

This paper deals with a single-axis zero-compliance horizontal system in which the displacement cancellation technique has been employed to develop the system. The both theoretical and experimental analyses regarding the developed system have been conducted. The displacement cancellation technique possesses the characteristic of zero-compliance in...

It is the international trend to promote renewable energy, as part of energy security as well as greenhouse gas emission reduction. Wind and solar energies can be used to supplement the conventional energy sources predominantly in remote coastal localities of Bangladesh. Feasibility study of renewable resources of Kutubdia, an off-grid remote islan...

Lead-acid batteries have been rapidly used in electric vehicles (3 wheeler) in Bangladesh with typical environmental problems such as consumption of resources and heavy metal pollution. Thus to conduct a comprehensive analysis of the environmental impact of the battery to reduce environmental pollution is urgent. In this paper, a life cycle analysi...

An attempt has been made to utilise solar energy more efficiently by developing the single pass hybrid photovoltaic thermal system at the climatic condition of Bangladesh. As the electric energy conversion efficiency of the photovoltaic module falls with the surrounding temperature and air or water used as a suitable solution to make it cool. In th...

To relief the earth from extracting of her all the conventional energy and to keep her safe for our upcoming successor, the focus of power sector must be pointed to the utilization and development of renewable energy technology. As alternative energy sources, wind and solar energies can be used to supplement the conventional energy sources predomin...

Biodiesel has been identified as an alternative and promising fuel source to reduce the dependency on conventional fossil fuel in particular diesel. In this work, waste cooking oil (WCO) of restaurants is considered to produce biodiesel. A well-established transesterification reaction by sodium hydroxide (NaOH) catalytic and supercritical methanol...

Optical particle counters (OPC). Abstract: The degree of Environmental pollution and the harmfulness to human health depends on the size of the solid particles or the liquid droplets. This study explored the process of producing fine liquid droplets with the help of a polydispersed atomizer. In this study, an atomizer was designed, fabricated and t...

The demand of power is increasing day by day due to the increase of world population as well as the industrialization and modernization. Depletion of the world’s fossil fuel reserves and the adverse effects of their uses on the environment insist the researchers to find out some means of efficient and cost effective alternative energy sources from...

Depletion and environmental impacts of the fossil fuel are the major concerns to think about the alternative energy sources to reduce the load on petroleum fuel. Researchers worldwide are working years to improve the biodiesel fuel economy and emission characteristic. At the same time, they are working on fuel development so that can be used in the...

Painful acute cysts in the natal cleft or lower back, known as pilonidal sinus disease, are a severe burden to many younger patients. Although surgical intervention is the preferred first line treatment, postsurgical wound healing disturbances are frequently reported due to infection or other complications. Different treatment options of pilonidal...

The first small scale commercial tire waste pyrolysis plant has been installed by the Radiant Renewable Energy (RRE) Ltd. at Gazipur, Dhaka for reducing liquid fuel crisis in Bangladesh. The plant has two pyrolysis unit, each of them consists of a horizontal axis rotary type batch mode reactor with a recycling capacity of 4.5 tons/run. Solid tire w...

Among the different efforts towards the reduction in pollutant emissions from direct injection (DI) diesel engines, the use of gaseous fuels as a partial supplement for diesel fuel has been proposed by many researchers. An experimental investigation was performed to investigate the influence of dual-fuel combustion on the performance and exhaust em...

Renewable energy encompasses a broad range of energy resources. To meet the increasing demand of electricity alternative sources of electricity production are given more importance. The huge amount of waste biomass generates in the world as well as in Bangladesh due the rapid growth of population can be a potential source of electricity production....

Mikroorganismen, insbesondere Bakterien, leben nur zu geringen Anteilen in freier, sogenannter planktonischer Form. Schätzungsweise 99 % aller Mikroorganismen sie-deln in der Form von Biofilmen. Das sind mikrobielle Schleimfilme, welche die Mikroorganismen an praktisch jeder Grenzfläche bilden. Sehr viele bakterielle Spezies sind in der Lage, Biofi...

To evaluate the wound debridement efficacy (that is, achievement of 100% granulation tissue on the wound bed) of a new monofilament fibre product (Debrisoft). This multicentre, prospective, observational evaluation assessed the debridement efficacy, safety, patient comfort and user satisfaction of this new product. Time taken to perform the debride...

Particulate matter (PM) emitted from a dual fuel engine is characterized using thermogravimetry, X-ray photoelectron spectroscopy (XPS) and Raman spectroscopy. Thermogravimetric analysis (TGA) provides the mass fractions of elemental carbon and volatile materials in PM; XPS provides the possible chemical compositions in the topmost layer of PM surf...

The particulate matter (PM) of a dual fuel engine was characterized in size, morphology and fractal geometry by using scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Particulate samples were collected from the diluted exhaust of the engine operated on diesel fuel, natural gas (NG) and synthetic biogas. The engine oper...

Research on the combustion and performance of dual fuel stationary engines using natural gas and methane is found to be adequate in published literature. The emissions aspects, however, are less well investigated. Inadequacy is also noted in the case of published research works on biogas in dual fuel engines in respect of regulated emissions. One i...

Bangladesh is a tropical country and its temperature condition is very suitable for the fermentation of organic materials throughout the year. Therefore, there is a great prospect of biogas to be used as an alternative source of energy in Bangladesh. This study investigated biogas production from different fermentable materials by a small size mode...

Results are presented of tests from a variable compression ratio Ricardo E6 single-cylinder spark-ignition (SI) engine operating on ‘Powergas’—a synthetic fuel consisting mainly of carbon monoxide and hydrogen. The tests cover a range of air/fuel ratios from rich to the lean operating limit at different speeds and two different compression ratios....

Results are presented of tests from a variable compression ratio Ricardo E6 single-cylinder spark-ignition (SI) engine operating on 'Powergas'—a synthetic fuel consisting mainly of carbon monoxide and hydrogen. The tests cover a range of air/fuel ratios from rich to the lean operating limit at different speeds and two different compression ratios....

Biogas derived from organic waste materials is a promising alternative and renewable gaseous fuel for internal combustion (IC) engines and could substitute for conventional fossil fuels. The aims of this study are to review the past researches on biogas fuelled IC engines and from this review, to identify current research needs. A detailed analysis...

Restricted Item. Print thesis available in the University of Auckland Library or may be available through Inter-Library Loan. [no abstract available]