Wan Zaidi Wan Omar

The commercialisation process of patents by universities

The commercialisation process of university patents and how the decisions were made to patent new scientific discoveries and to commercialise them have not been studied extensively. This paper attempts to understand in detail, the process of commercialisation of university patents from the initial scientific disclosures through patent filings to the choice of commercialisation routes. A series of interviews were conducted with seven directors of technology transfer offices (TTO) of UK universities. The interviews were structured in a way so as to discover how new disclosures in their universities were chosen to be patented and how the patents were commercialised. The interviews were recorded, transcribed and analysed with the help of Nvivo software. Then, case and cross case analysis were done. The result of the study showed that there are variations in practices between universities in how they decide to patent and in the routes of exploitation. Universities do differ on which inventions need to be patented and which route to go for their commercialisation. Universities that practice very highly selective procedures would only patent an invention after a very thorough market analysis. But there are universities that practiced low selective procedures; as such, they file for patent as long as the invention fulfils an expectation of potential value. Decisions on which route to commercialise are sought after the patent filings. Overall, only one university practice a very systematic selection procedure, from which, inventions were patented and specific route of commercialisation was chosen. Most of the universities based their selection criteria on motivations of the inventors, either to patent and which commercialisation route to utilise for their inventions.

Design and simulation of electronic ballast performance for high pressure sodium street lighting

A novel method of reducing the energy consumption of street lighting using electronic ballasts was simulated on 277 units of 250 W high pressure sodium (HPS) street lights for a month. The design of the electronic ballast is detailed. A control system was utilised to dim the lights at hours of reduced traffic. The energy consumption was compared to that of the conventional system. The electronic ballast operates at a higher frequency and corrects any power distortion in the supply. Together with the light dimming capability, the electronic ballast increased the efficiency of the lighting system resulting in a monthly saving of 10.7 MWh, giving a monthly equivalent carbon dioxide reduction of 6.1 tonnes. In Malaysia, this would translate to a monthly cost saving of 37.7%.

Photovoltaic technology in Malaysia: past, present, and future plan

This article presents solar energy or specifically the solar photovoltaic (PV) development outlook in Malaysia. The paper first introduces the massive potential of solar energy in the country, the key players in the solar energy development and the early solar energy policies, and programmes in the country. The most important to the PV development is the Malaysia Building Integrated Photovoltaic initiative, which is presented in this paper followed by an explanation on the Feed-in Tariff recently introduced in the country to encourage new solar PV projects. The outlook for solar PV in Malaysia is optimistic and as the uptake of solar PV increases, the unit cost is coming down rapidly. Solar PV is expected to be the most competitive Renewable Energy (RE) source, with the potential to achieve grid parity for electrical power in the country in the near future, and surpassing all other REs combined by 2050.

Combustion Performance Evaluation of Air Staging of Palm Oil Blends

The problems of global warming and the unstable price of petroleum oils have led to a race to develop environmentally friendly biofuels, such as palm oil or ethanol derived from corn and sugar cane. Biofuels are a potential replacement for fossil fuel, since they are renewable and environmentally friendly. This paper evaluates the combustion performance and emission characteristics of Refined, Bleached, and Deodorized Palm Oil (RBDPO)/diesel blends B5, B10, B15, B20, and B25 by volume, using an industrial oil burner with and without secondary air. Wall temperature profiles along the combustion chamber axis were measured using a series of thermocouples fitted axially on the combustion chamber wall, and emissions released were measured using a gas analyzer. The results show that RBDPO blend B25 produced the maximum emission reduction of 56.9% of CO, 74.7% of NOx, 68.5% of SO(2), and 77.5% of UHC compared to petroleum diesel, while air staging (secondary air) in most cases reduces the emissions further. However, increasing concentrations of RBDPO in the blends also reduced the energy released from the combustion. The maximum wall temperature reduction was 62.7% for B25 at the exit of the combustion chamber.

Similarity solution and Runge Kutta method to a thermal boundary layer model at the entrance region of a circular tube: The Lévêque Approximation

In the thermal entrance region, a thermal boundary layer develops and also reaches the circular tube center. The fully developed region is the zone in which the flow is both hydrodynamically and thermally developed. The heat flux will be higher near the inlet because the heat transfer coefficient is highest at the tube inlet where the thickness of the thermal boundary layer is zero and decreases gradually to the fully developed value. In this paper, the assumptions implicit in Leveques approximation are re-examined, and the analytical solution of the problem with additional boundary conditions, for the temperature field and the boundary layer thickness through the long tube is presented. By defining a similarity variable, the governing equations are reduced to a dimensionless equation with an analytic solution in the entrance region. This report gives justification for the similarity variable via scaling analysis, details the process of converting to a similarity form, and presents a similarity solution. The analytical solutions are then checked against numerical solution programming by Fortran code obtained via using Runge-Kutta fourth order (RK4) method. Finally, others important thermal results obtained from this analysis, such as; approximate Nusselt number in the thermal entrance region was discussed in detail.

CFD Modeling and Simulation of Aeorodynamic Cooling of Automotive Brake Rotor

Braking system is one of the important control systems of an automotive. For many years, the disc brakes have been used in automobiles for the safe retarding of the vehicles. During the braking enormous amount of heat will be generated and for effective braking sufficient heat dissipation is essential. The thermal performance of disc brake depends upon the characteristics of the airflow around the brake rotor and hence the aerodynamics is an important in the region of brake components. A CFD analysis is carried out on the braking system as a case study to make out the behavior of airflow distribution around the disc brake components using ANSYS CFX software. We are interested in the determination of the heat transfer coefficient (HTC) on each surface of a ventilated disc rotor varying with time in a transient state using CFD analysis, and then imported the surface film condition data into a corresponding FEM model for disc temperature analysis.

A numerical parametric study of mechanical behavior of dry contacts slipping on the disc-pads interface

Abstract The aim of this contribution is to present a study based on the determination and the visualization of the structural deformations due to the contact of slipping between the disc and the pads. The results of the calculations of contact described in this work relate to displacements, Von Mises stress on the disc, and contact pressures of the inner and outer pad at various moments of simulation. One precedes then the influence of some parameters on the computation results such as rotation of the disk, the smoothness of the mesh, the material of the brake pads and the friction coefficient enter the disk and the pads, the number of revolutions and the material of the disk, the pads groove.

CFD MODELING AND COMPUTATION OF CONVECTIVE HEAT COEFFICIENT TRANSFER OF AUTOMOTIVE DISC BRAKE ROTORS

The braking network of an automobile is one of its most important control systems. For many years, disc brakes have been used for safe retardation of a vehicle. During braking, an enormous amount of heat is generated, and for effective braking, sufficient heat dissipation is essential. The thermal performance of a disc brake depends on characteristics of the airflow around the brake rotor; hence, aerodynamics is key in the region of brake components. Using ANSYS CFX software, we performed a computational fluid dynamics (CFD) analysis on a brake system to study the behavior of airflow distribution around disc brake components. We were interested in the determination of the heat-transfer coefficient on each surface of a ventilated disc rotor, varying with time in a transient state. Using CFD analysis, we imported surface film condition data into a corresponding finite-element method for disc temperature analysis.

Computational fluid dynamics (CFD) analysis and numerical aerodynamic investigations of automotive disc brake rotor

Abstract Braking system is one of the important control systems of an automotive. For many years, the disc brakes have been used in automobiles for safe retardation of the vehicles. During braking, enormous amount of heat will be generated and for effective braking sufficient heat dissipation is essential. The thermal performance of disc brake depends upon the characteristics of the airflow around the brake rotor and hence the aerodynamics is an important in the region of brake components. A computational fluid dynamics (CFD) analysis is carried out on the braking system as a case study to make out the behaviour of airflow distribution around the disc brake components using ANSYS CFX software. We are interested in the determination of the heat transfer coefficient (HTC) on each surface of a ventilated disc rotor varying with time in a transient state using CFD analysis, and then imported the surface film condition data into a corresponding FEM model for disc temperature analysis.

Stress analysis of automotive ventilated disc brake rotor and pads using finite element method

The complexity of the physical or technological systems to be developed or studied led to employing numerical methods based on the principle of an approach as possible nominal solution, but these require large computations requiring efficient computers. The computer code ANSYS also allows the determination and the visualization of the structural deformations due to the contact of slipping between the disc and the pads. The results of the calculations of contact described in this work relate to displacements, Von Mises stress on the disc, contact pressures of the inner and outer pad at various moments of simulation. One precedes then the influence of some parameters on the computation results such as rotation of the disc, the smoothness of the mesh, the material of the brake pads and the friction coefficient enter the disc and the pads, the number of revolutions and the material of the disc, the pads groove.