Decentralized power supply for remote and urban areas via gasifier-engine system is an attractive choice especially when sources of fossil fuel are getting depleted and leading to serious emission hazards. In gasifier, the solid biomass is converted into “producer gas,” which can fuel a gas-engine in single fuel mode i.e., complete substitution. The conversion of stationary diesel engine into producer gas-engine (i.e., complete substitution) ensure complete independency from fossil fuels; although it demands major modifications/retrofitting arrangements. Herein, an existing diesel engine of capacity 7.4 kW is chosen and converted into producer gas-engine operated on single fuel mode (spark ignited) at compression ratio of 14:1. Other arrangements such as installation of spark ignited mode (i.e., ignition coil and distributor followed by contact breaker unit), gasoline carburetor and special induction system followed by other necessary arrangements were carried out. A kit is suggested for conversion of different capacity and types engines utilizing alternate/renewable gaseous fuels. A considerable power loss (power derating) and reduction in thermal efficiency is observed while operation in single producer gas mode. More detailed experiments are required to predict qualitative performance trends.

A Glass composition 25BaO-30B2O3-45Bi2O3 was synthesized using melt quench technique. The structural, optical, electrical and thermal behaviour of prepared glass sample was investigated using X-ray diffraction (XRD), Fourier Transform Infrared (FTIR) Spectroscopy, UV-Vis NIR, Impedance spectroscopy and Differential Thermal Analysis (DTA) respectively. XRD pattern of annealed glass sample, matched with diffraction profile of Bi45BO69 crystallite with size 49.83 nm. Optical parameters such as cut-off wavelength, bandgap, urbach energy and the refractive index were also calculated using UV-Vis absorption spectra for both samples. Dielectric parameters such as dielectric constant (ε’), dielectric loss (ε”), a.c. conductivity (σac) and loss tangent (tanδ) were also calculated for as prepared glass sample. The DTA curve shows crystallization ability and thermal stability of glassy sample. The synthesized composition was found to be promising material for applications like opto-electronic and energy storing devices, which enhance industry, innovation and infrastructure and ultimately enrich the sustainable cities and communities.

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