Andrew Zulu

Namibia University of Science and Technology · Mechanical & Marine Engineering

Varied mixed percentages of residues of maize, millet, rice and cow dung were designed to developed eleven 220cm by 110 cm by 40 cm board samples (labelled A- K) from residues of maize, millet, rice and cow dung. The samples were compacted, sun dried for 7 days and tested for thermal conductivity and thermal resistivity using a thermal conductivity...

The ‘Network of Excellence in Renewable Energy Technologies for Development’ also known as "Network of Energy Excellence for Development" (NEED), comprises a consortium of five partner institutions from Botswana, Germany, Namibia and Zambia undertaking collaborative research aimed at kick-starting and institutionalizing the widespread exploitation...

This paper presents the ‘Network of Excellence in Renewable Energy Technologies for Development’ (NEED), which was initiated by a project consortium of five partner institutions from Botswana, Germany, Namibia and Zambia. The collaboration is intended to initially function as a research network between the five partner institutions, but is subseque...

The quadrotor unmanned aerial vehicle is a great platform for control systems research as its nonlinear nature and under-actuated configuration make it ideal to synthesize and analyze control algorithms. After a brief explanation of the system, several algorithms have been analyzed including their advantages and disadvantages: PID, Linear Quadratic...

The efficiency of use of solar panels is influenced by many factors. This paper investigates, by experiment, the influence of artificial light and shading on solar panel cells. Firstly, the panel cells are exposed to artificial light of three different power levels. Secondly, the panel cells were shaded by one-quarter, half and three-quarters. Curr...

The reasons for low performance of a domestic-size three-fluid absorption refrigeration system were studied. To improve the performance, the boiler, lift tube, vapor-liquid separator and the heat exchanger were modified, while maintaining the same principle of operation. Data was recorded using different power supplies of 260 W, 315 W and 370 W. Th...