Browsing by Author "Justo, Jackson John"

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    The 3rd International Training Course in Information Technology-based for Electric Engineering Education
    (2009-11) Mushi, Aviti Thadei; Justo, Jackson John
    This is a report from the representatives of Tanzania to the Third International Training Course in Information Technology-based for Electric Engineering Education. It was held at Electronic Engineering Polytechnic Institute of Surabaya (EEPIS).
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    Development of integrated telemedicine infrastructures for access to specialist doctors for rural communities in Tanzania
    (6th International Conference in Mechanical and Industrial Engineering (MIE' 2020), 2020-09) Justo, Jackson John; Budeba, Mussa Daniel; Wikedzi, Alphone Wendelin; Katandukila, Jestina; Chibwana, Fred; Mushi, Aviti Thadei; Bitebo, Ally; Sisala, Joseph Mwakijale; Katemi, Richard
    This presentation describes a project that develops a solution for the delivery of healthcare services by means of advanced information and communication technologies and control systems.
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    Performance analysis of renewable energy resources in rural areas: Case study of solar energy
    (Tanzania Journal of Engineering and Technology, 2020-06) Justo, Jackson John; Mushi, Aviti Thadei
    This paper presents an overview of the recent development trends of solar photovoltaic (PV) systems and the performance in the Tanzanian context. The two types of solar power generation that are considered in this paper are: i) solar PV systems and ii) concentrated solar power (CSP). The two are compared in terms of cost of energy and energy storage mechanism. Moreover, the effect of ambient temperature on the solar PV module is analyzed. In addition, a detailed analysis on using solar axis tracking to increase the power generation is also presented. The extent to which the cell surface temperature and orientation of the solar module which determine the power generation is modeled. Since Tanzania has the possibility to utilize the solar irradiance in the Coastal region to generate solar power, and therefore it is selected as the case study in this paper.
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    Studying Dielectric Losses of Serially Combined Silicone Rubber and Epoxy Resin
    (College of Engineering and Technology, University of Dar es Salaam, 2023-02-28) Mushi, Aviti Thadei; Justo, Jackson John; Kyaruzi, Alexander Lugatona
    High voltage outdoor insulation systems are conventionally ceramics and glass with several advantages, such as proven in field, excellent dielectric properties, durability, and long life. However, they are heavy, attract vandals and break easily, and they can lose their dielectric properties easily when subjected to high voltage transients, arcing, and surges. To curb this, polymer insulators are used because they have excellent dielectric properties such as those of ceramics and glass, with the added advantages that they don’t break easily, and they recover their lost dielectric properties after any electrical transients. Therefore, this paper investigates the dielectric properties of polymeric materials – silicone rubber (SR) and epoxy resin (ER). Some of the SR samples were manufactured in the laboratory, and others were obtained from industrial manufacturer. All the ER samples were manufactured in the laboratory. The dielectric measurements were performed with the Insulation Diagnostics System. Within the measured frequency ranges, the dielectric losses of SR manufactured industrially differ with the laboratory manufactured specimens. This is due to presence of filler materials in the industrially manufactured samples. For the case of serially connecting the SR and ER, there was higher influence of dielectric loss of SR than the ER with some remarkable dielectric losses at some frequencies.