A 3D Printed bi-directional Turbine for Thermoacoustic Standing Wave Environment at an Atmospheric Pressure

2023-12-12T02:07:17+00:00

This paper reports a study on the use of an in-house 3D printed bi-directional turbine for energy conversion in a standing wave thermoacoustic environment that is operated at an atmospheric pressure. The 3D printed turbine was placed at two locations along the resonator and the data were recorded for several range of flow frequency and flow amplitude. It is found that maximum output is achieved when flow is not at resonance. Resonance of the standing wave inside the rig was found at 106 Hz but the bi-directional turbine performs better at a lower frequency of 85 Hz.

Experimental Evaluation of the Performance of a Diesel Engine Feeding with Ethanol/Diesel and Methanol/Diesel

2024-03-05T09:03:51+00:00

Nowadays, decreasing sources of petroleum fuel has led to innovation of other resources. Alternative fuel can be produced from biomass such as alcohol. In this work, an experimental study on the feasibility and the effects of using Diesel-ethanol and Diesel-methanol blends as alternative fuel for Diesel engine was carried out. Pure Diesel, Diesel-ethanol, D95E5, D90E10 and D85E15 as well as Diesel-methanol, D95M5, D90M10 and D85M15 on Farymann four stroke monocylinder Diesel engine performances was completed. The engine is tested at full load with engine speed ranged from 700 to 3000 tr/min. The effects of ethanol and methanol fraction on diesel engine power, torque, brake specific fuel consumption (BSFC), brake thermal efficiency and exhaust temperature were experimentally investigated. The results showed that mixing ethanol and methanol at different fractions with Diesel fuel have a significant effect on the engine performance, as well as the nature of alcohol, which constitutes a combustion catalyst. Fuel mixtures, D85E15 and D85M15 have the highest improvement rates compared to pure Diesel and other examined fuel mixtures. It has been shown, that, the lowest BSFC than that of pure Diesel, which is an advantage for our proposed fuels, is recorded with D95E5 and D95M5 blends. The different mixtures provide higher exhaust gas and outlet temperature of the coolant proportional to the mixing ratio, which explains why the addition of biofuel improves the calorific value of the fuel. The combustion of the different mixtures increases the outlet temperature of the coolant in proportion to the mixing rates.

Journal of Advanced Research in Experimental Fluid Mechanics and Heat Transfer

A 3D Printed bi-directional Turbine for Thermoacoustic Standing Wave Environment at an Atmospheric Pressure

Experimental Evaluation of the Performance of a Diesel Engine Feeding with Ethanol/Diesel and Methanol/Diesel