Universiti Teknologi Malaysia

About: Universiti Teknologi Malaysia is a education organization based out in Johor Bahru, Malaysia. It is known for research contribution in the topics: Membrane & Control theory. The organization has 21644 authors who have published 39500 publications receiving 520635 citations.

A review on biomass-based hydrogen production for renewable energy supply

Abstract: This article gives an overview of the state-of-the-art biomass-based hydrogen production technologies Various biological and thermochemical processes of biomass are taken into consideration to find the most economical method of hydrogen production Biohydrogen generated by biophotolysis method, photo-fermentation and dark fermentation is studied with respect to various feedstocks in Malaysia The fermentation approaches of biohydrogen production have shown great potential to be a future substitute of fossil fuels Dark fermentation method is a simple biological hydrogen production method that uses a variety of substrate and does not require any light as a source of energy A promising future for biohydrogen production is anticipated by this process both industrially and commercially Feasibility of hydrogen production from pyrolysis and water gasification of various biomass feedstock confirm that supercritical water gasification (SCWG) of biomass is the most cost-effective thermochemical process Highly moisturized biomass could be employed directly in SCWG without any high-cost drying process Indeed, a small amount of energy is required to pressurize hydrogen in the storage tank because of highly pressurized SCWG process The cost of hydrogen produced by SCWG of biomass is about US$3/GJ (US$035/kg), which is extremely lower than biomass pyrolysis method (in the range of US$886/GJ to US$1552/GJ) and wind-electrolysis systems and PV-electrolysis systems (US$202/GJ and US$418/GJ, respectively) The best feedstock for biomass-based hydrogen production is identified based on the availability, location of the sources, processes required for the preparation of the feedstock and the total cost of acquiring the feedstock The cheapest and most abundantly available biomass source in Malaysia is the waste of palm industry Hydrogen production from palm oil mill effluent and palm solid residue could play a crucial role in the energy mix of Malaysia Malaysia has this great capability to supply about 40% of its annual energy demand by hydrogen production from SCWG of palm solid waste © 2015 John Wiley & Sons, Ltd

Review on reliability improvement and power loss reduction in distribution system via network reconfiguration

Abstract: Usually, consumers experience power failures due to problems in the distribution systems. Distribution systems have evolved to an extent where smart technologies are needed for their smooth operation. Network reconfiguration is one of the functions of distribution automation that improves the performance of the system by altering the structure of the distribution network. In literature, different network reconfiguration problems have been resolved with various methods. However, the active power loss minimisation problem is considered most of all, because if these losses are less than the standard, the distribution companies can benefit monetarily. In addition, during the last few decades, distribution system reliability has been developed to provide interruption free electricity services. With improved system reliability, power distribution companies can save the expenses that are spent on a distribution system's maintenance and operation after a power failure. This paper thus gives a general background, literature review and comparative analysis of methods used for network reconfiguration for reliability enhancement and loss minimisation in the distribution network, so that new researchers can easily read the literature, especially in this area. Moreover, this is the first effort to collect the previous and the most recent research works on the field of reliability of distribution system through network reconfiguration. Therefore, this work will serve as a one stop source for the guidance of the new researchers in this field.

Applying the UTAUT Model to Explain the Students' Acceptance of Mobile Learning System in Higher Education

Abstract: Mobile learning applications have been growing in demand and popularity and have become a common phenomenon in modern educational systems, especially with the implementation of mobile learning projects. This study applies the Unified Theory of Acceptance and Use Technology (UTAUT) model to examine the effects of different factors that were identified from the literature on students' acceptance of mobile learning applications in higher education. The data was collected from a 697 university students responded to an online questionnaire. SEM method was used for data analysis. The results showed that perceived information quality, perceived compatibility, perceived trust, perceived awareness, and availability of resources, self-efficacy, and perceived security are the main motivators of students' acceptance of mobile learning system, and consequently success the implementation of mobile learning projects. Results from this study provide the necessary information as to how higher education institutions can enhance students' acceptance of mobile learning system in order to support the usage of mobile technologies in learning and teaching process. These results offer important implications for mobile learning acceptance and usage.