Mohammed Sanduk

Experimental Investigation of Heat and Mass Transfer in Tubular Membrane Distillation Module for Desalination

Membrane distillation is a thermally driven membrane process for seawater desalination and purification at moderate temperatures and pressures. A hydrophobic micro-porous membrane is used in this process, which separates hot and cold water, allowing water vapor to pass through; while restricting the movement of liquid water, due to its hydrophobic nature. This paper provides an experimental investigation of heat and mass transfer in tubular membrane module for water desalination. Different operating parameters have been examined to determine the mass transport mechanism of water vapor. Based on the experimental results, the effects of operating parameters on permeate flux and the heat transfer analysis have been presented and discussed in details.

Potential of membrane distillation – a comprehensive review

Membrane distillation (MD) is a recent and unique separation technology, in use in the process industry. The process of separation in MD involves the simultaneous heat and mass transfer through a hydrophobic semi permeable membrane, using thermal energy. Consequently a separation of the feed solution into two components – the permeate or product and the retentate or the return stream occurs. MD utilises low grade or alternative energy, e.g., solar energy, geothermal energy, etc., as a source and is the most cost effective separation technology. Hence the process has come to acquire the attention and interest of researchers, experimentalists and theoreticians all over the world. This article is a comprehensive review of the prominent research in the field of MD technology, including its basic principle, MD configurations, area of applications, membrane characteristics and modules, experimental studies involving the effect of main operating parameters, MD energy and economic, fouling and long-term performance.

Development of a wind turbine system with energy storage in the form of hydropower

With wind energy penetration in energy markets increasing as part of the solution to meeting renewable energy targets, the need for smoothing of intermittent power generation is becoming more of a necessity. This paper looks at pumped hydro storage as a method for storing energy from the wind and shows the development of a hybrid system, where wind energy is harnessed to drive a mechanical pump to lift groundwater. The important design parameters for optimization of the system are discussed, as well as the possibility of a system that operates at 100% efficiency.

Requirements and Design a Small Wind Rotor for a Small House in Guildford

The adoption of renewable energy based systems for electricity generation, leaving aside fossil based energy systems is of paramount importance to humanity. The purpose of this paper is the design of a small wind rotor that meets the electric power requirement of a small house in Guildford, UK. The conceptual design developed comes from the evaluation of the existing science and technology in terms of wind rotor design and their adjustment to the data, information and facts that apply in Guildford.

Solar Hydrogen Production via Aqueous Methanol Electrolysis

Despite having very clean combustion properties, the majority of hydrogen produced today still comes from fossil fuels. As such, there is a demand for renewably produced hydrogen, such as solar powered electrolysis, so that the hydrogen produced retains its clean credentials. Unfortunately, this process is plagued by inefficiencies and requires improvement in order to economically compete with fossil fuels. This work investigates solar hydrogen production via aqueous methanol (MeOH) electrolysis in comparison to pure water electrolysis in a directly coupled solar-PEM electrolysis system. Experiments were completed to investigate the impact of changing the MeOH concentration, power supply, and load characteristics on electrolysis and solar-hydrogen efficiencies. Simulation studies were then performed to analyse thoroughly the experimental data so as to gain an understanding of the yields and economics of utility scale solar–hydrogen facilities.

Technical and economic analysis for an onshore wind grid connection (Case study, Greece)

The energy demands in combination to the environmental impacts of conventional ways of energy production, has raised the importance and the benefits of the renewable energy technologies. This paper aims to compare two commercial wind turbines with a theoretical design, in terms of energy production and financial aspects. The study includes the site assessment of the location Marmari in south Evia, the calculation of the basic characteristics of the theoretical rotor and finally the comparison of the theoretical design with two wind turbines regarding the energy production and the financial aspects [1].

Requirements and design of a small wind rotor for a small house in Guildford

The adoption of renewable energy based systems for electricity generation, leaving aside fossil based energy systems is of paramount importance to humanity. The purpose of this paper is the design of a small wind rotor that meets the electric power requirement of a small house in Guildford, UK. The conceptual design developed comes from the evaluation of the existing science and technology in terms of wind rotor design and their adjustment to the data, information and facts that apply in Guildford.