Harmanpreet Singh

Bio: Harmanpreet Singh is an academic researcher from Thapar University. The author has contributed to research in topics: Coal & Coal water. The author has an hindex of 4, co-authored 17 publications receiving 58 citations.

Production of producer gas from sugarcane bagasse and carpentry waste and its sustainable use in a dual fuel CI engine: A performance, emission, and noise investigation

Abstract: Due to ever increasing use of conventional fuels and improper utilization of renewables, air pollution and GHG (Green House Gas) emissions are the primary areas of concern. Due to this, the world is now shifting interest towards the synthesis and use of alternate fuels; that can replace the conventional fuels. Present work focuses on an experimental investigation, which is carried out on two different biomass materials – sugarcane bagasse and carpentry waste in 1:1 ratio. Biomass samples were used to synthesize producer gas in a downdraft gasifier with a gas flow rate of 5.07 Nm3/h. Producer gas was blended with diesel and fired in a dual fuel CI engine. Engine performance was smooth while it was tested for six load variations for noise characteristics and various performance and emission parameters. A maximum reduction in diesel consumption by 45.7% and NOx emissions by 69.5% was reported with a slight increase (∼3.4 dB) in the noise.

Microwave-assisted rapid upgrading of Indian high ash coal and its blending with untreated coal to improve the slurryability and rheological characteristics of blended slurry

Abstract: The Indian high ash coal collected from Makum coal fields of Assam is crushed, sieved and air dried using lab scale instruments. Based on the preliminary results, the coal sample is treated in a la...

Improved Slurryability and Rheological Characteristics of High Ash Indian Coal by Hydrothermal Treatment

Abstract: The crushed and sieved high ash coal samples are treated hydrothermally in a 15 l (liters) lab scale autoclave at a temperature of 394 K and residence times of 30, 45, 75 and 120 minutes. The hydro...

Application of Response Surface Methodology for Optimization of Fuel Injection Parameters of a Dual Fuel Engine Fuelled with Producer Gas-Biodiesel blends

Abstract: The present work reports the development of a mathematical model to establish a correlation between controllable engine input parameters and their dependent responses over a varied range of engine ...

3D printing towards implementing Industry 4.0: sustainability aspects, barriers and challenges

Abstract: Purpose Environmental degradation has emerged as one of the major limitations of industrial revolution and has led to an increased focus towards developing sustainable strategies and techniques. This paper aims to highlight the sustainability aspects of three-dimensional (3D) printing technology that helps towards a better implementation of Industry 4.0. It also aims to provide a brief picture of relationships between 3D printing, Industry 4.0 and sustainability. The major goal is to facilitate the researchers, scholars, engineers and recommend further research, development and innovations in the field. Design/methodology/approach The various enabling factors for implementation of Industry 4.0 are discussed in detail. Some barriers to incorporation of 3D Printing, its applications areas and global market scenario are also discussed. A through literature review has been done to study the detailed relationships between 3D printing, Industry 4.0 and sustainability. Findings The technological benefits of 3D printing are many such as weight savings, waste minimization and energy savings. Further, the production of new 3D printable materials with improved features helps in reducing the wastage of material during the process. 3D printing if used at a large scale would help industries to implement the concept of Industry 4.0. Originality/value This paper focuses on discussing technological revolution under Industry 4.0 and incorporates 3D printing-type technologies that largely change the product manufacturing scenario. The interrelationships between 3D printing, Industry 4.0 and sustainability have been discussed.

Acacia concinna: A natural dispersant for stabilization and transportation of fly ash-water slurry

Abstract: The present study involves the stabilization and rheological behavior of a fly ash samples in the presence of a low cost natural dispersant saponin isolated from a plant Acacia concinna. The critical micellar concentration of the surfactant was measured and it was found to be 0.019g per cc. The rheological characteristics of the slurry had been analyzed by variation of saponin concentration, ash concentration and temperature. The data obtained were best fitted by Bingham plastic model in the studied ranges of concentrations 50–65%. Addition of the surfactant to the slurry reduced the surface tension of the dispersing medium water which increased wettability of the fly ash particles and reduced particle-particle interaction. Decreases in zeta potential measurement conformed that stabilization fly ash slurry is mainly due to the steric factor.