The U.S. Department of Energy (DOE) Office of Fossil Energy is intensely promoting research and development of oxy-fuel combustion systems that employ oxygen, instead of air, for burning the fuel. The resulting flue gas primarily consists of H2O and CO2 that facilitates sequestration of CO2 or use it in a turbine to generate electricity, thereby leading to reduction in CO2 emissions. Also, as t...

computational fluid dynamics analysis was employed to investigate the radial flow field patterns of proton exchange membrane fuel cells (pemfc) with different channel geometries at high operating current densities. 3d, non-isothermal was used with single straight channel geometry. our study showed that new generation of fuel cells with circle stack with the same active area and inlet area gave ...

The U.S. Department of Energy (DOE) Office of Fossil Energy is intensely promoting research and development of oxy-fuel combustion systems that employ oxygen, instead of air, for burning the fuel. The resulting flue gas primarily consists of H2O and CO2 that facilitates sequestration of CO2 or use it in a turbine to generate electricity, thereby leading to reduction in CO2 emissions. Also, as t...

In today’s era of plasma and laser cutting, machines using oxy-acetylene flame are also meritorious due to their simplicity and cost effectiveness. The objective to devise a Computer controlled Oxy-Fuel profile cutting machine arose from the increasing demand for metal cutting with respect to edge quality, circularity and lesser formation of redeposit material. The System has an 8 bit micro con...

Abstract 30MnB5 boron alloyed steel surface is coated using different coating techniques, namely 60(Ni-15Cr-4.4Si-3.5Fe-3.2B 0.7C)-40(WC 12Co) metallic powder plasma spray, Fe-28Cr-5C-1Mn alloy wire arc WC-10Co-4Cr (thick) high velocity oxy-fuel (HVOF), and (fine) diamond jet HVOF. The microstructure of the crude sample consists ferrite pearlite matrices iron carbide structures. intermediate bi...

The main objective of this work was to characterize and compare the microstructural mechanical properties as well erosion resistance WC-12Co WC-10Co-4Cr coatings. High Velocity Oxy Fuel (HVOF) process applied carbon manganese steel API 2H typically used in oil gas industries. Microstructural characterization feedstock powder coatings conducted using scanning electron microscope (SEM), energy di...

Recently, Fe-based amorphous coatings synthesized by different thermal spraying methods have been investigated as a potential candidate for long-term surface protection of various structures due to their outstanding wear and corrosion resistance. Defects such porosity crystallization are inevitable in the thermal-sprayed coatings, which introduced during synthesis process. The behavior these is...

ICIE16 and 13-93 bioactive glasses have been proposed as alternative chemically stable compositions in physiological fluid keeping bioactivity comparable to Bioglass®. coatings were produced via an emerging suspension high-velocity oxy-fuel (SHVOF) thermal spraying technique. Suspensions of with 10 wt% solid loading isopropanol (IPA) water used produce on AISI304 stainless steel using a flame p...