Ayman Bakry

Ayman Bakry
Tanta University Facult of Engineering · Power Mechanical Engineering

PhD

About

27
Publications
2,776
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231
Citations

Publications

Publications (27)
Article
The gasification of agricultural biomass wastes is considered to be a promising technique for energy recovery from a renewable energy source. The dynamic behavior and performance of an Imbert downdraft gasifier integrated with internal heating of the gasifying agent is investigated. The gasifier is operated by a batch of cotton stalks as the feedst...
Article
An inherent serious problem was noticed when the two-region Porous-Inert-Medium (PIM) burners were started-up at low-powers. The ignition near their downstream surface, failed to commence a correct combustion process. Depending on a limiting excess-air-ratio (λ), two distinct combustion patterns were detected. A noisy-explosive flame-plume was rema...
Poster
Full-text available
Experimental investigation was implemented to study the feasibility of producing energy out of palm tree mid-rib wastes by gasification technique. On the other hand, Pozzolanic quality of gasification ashes was also investigated. Chopped date palm fronds midrib (DPFM) was chosen as biomass waste of various traditional uses (e.g. handmade crates). G...
Article
Performance of a simple one-ended, evacuated tube solar collector was experimentally studied as a compact unit-cell for air heater at low steady flow rates. The investigated unit-cell was used to obtain medium temperature rise. In order to boost the temperature rise, one of these unit-cells was integrated with a single-axis sun-tracking solar parab...
Article
A modified technique to improve the performance of the conventional two-region approach used in stabilizing the combustion wave within porous inert media (PIM) burners operating at low power was proposed. This was achieved by detaching the two regions by an adjustable offset distance aiming to control the effects of the various interacted heat tran...
Article
Performance of two-region, square-shaped porous inert medium (PIM) burners operating at low thermal powers (densities) of 0.7–2.5 kW (48.61–173.6 kW/m²) was investigated. The smaller-pore region was made of perforated Cordierite plate. Performance was examined for two larger-pore combustion region materials. They had similar dimensions and were mad...
Article
A simple and robust suction technique is proposed for vacuum cleaning based on an innovative water filtration method for dry, wet, and water swab modes. The technique relies on applying vacuum above the free surface of water to drive the dust-laden airstream to be released at constant depth below the water surface. Unlike conventional vacuum cleane...
Article
It is well-established that minimizing water depth is one of the most vital key features to enhance the performance of solar stills. Accordingly, the performance of most recent attempts and proposed ideas tackling this point is limited. Thus, this work introduces a new approach that permits governing the water depth as desired and simultaneously ev...
Article
Investigation of a novel parameter that considerably enhances the performance of disk oil skimmers is introduced. This is of a great significance for the contingency plans of removing oil spills from aquatic environments and deciding their scenarios. Efficiency of a conventional disk oil skimmer could be nearly doubled by careful optimization of th...
Article
The rapid advances in technology necessitate abundant use of fossil fuels which poses two major challenges to any nation. One is fast depletion of fossil fuel resources; the other is environmental pollution. The porous medium combustion has proved to be one of the technically feasible options to tackle the environmental pollution problem to a remar...
Article
A new design of a stepped solar desalination system with flashing chamber is experimentally investigated. The main objective of the investigation was to study the performance of step-wise water basin coupled with a spray water system by augmenting desalination productivity through using two air heaters. The effect of using the spray system for seaw...
Article
One of the main targets of all current combustion systems, in addition to high efficiency and robust performance, is the ability to meet current and future pollutant emission regulations. In the present work, the suitability of vegetable (rapeseed) oil as a renewable, biodegradable, and environmentally friendly source of energy to operate porous in...
Article
This work presents an experimental investigation to study the characteristics of combustion using a premixed methane–air mixture within a non-homogeneous porous inert medium (PIM) under high pressure and temperature. In order to obtain a stable flame under these operating conditions within PIM, a novel flame stabilization technique in porous inert...
Article
This work presents an experimental investigation to study the characteristics of almost adiabatic combustion using a premixed methane−air mixture within a nonhomogeneous porous inert medium (PIM) under elevated pressure and temperature. To obtain a stable flame under these operating conditions within PIM, a new flame stabilization technique has bee...
Article
In this study, a modified technique based on the quenching region concept is proposed to enhance the flame stability within porous inert media (PIM). The new technique eliminates disadvantageous features inherent with this category of PIM combustion, such as the high-pressure drop and the continuous degradation of the quenching region. To demonstra...
Conference Paper
Full-text available
In the present study, the interaction between a large number of adhering surfaces and spilled oil was experimentally studied throughout an extensive research program aiming toward enhancing the performance of the oleophilic disk skimmers commonly applied for recovery of oil spills from aquatic environment. Therefore, nine kinds of materials with di...
Article
The present study was performed to investigate experimentally some aspects related to the characteristics of turbulent jet flow using laser Doppler anemometry (LDA) as a measuring technique. It includes the following: (1) investigation of the effect of the velocity bias on the experimental results of the mean and fluctuating velocities, (2) study o...

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Projects

Projects (2)
Project
Generate electrical energy using Biomass Gasification.
Project
producing a combustible gas from biomass through gasification process in a downdraft gasifier