The demand for electrical energy is on the increase particularly in a developing economy such as Nigeria, where the government has not been able to provide adequate and uninterruptible power supply to her fast growing population. More research is needed to bring electricityto the door step of the people by diverting attention into other sourcesof energy which can stand as viable alternative to the conventional sources of energy. This research is aimed at employing the potentials of water electrolysisto produce hydrogen fuel cell which can be used to power electrical appliances, among other applications. Step-bystep procedures where observed in using locally available materials to construct a containment of hydrogen fuel cell with an electrolyte and two electrodes separated apart into two equal halves of a transparent box made of Perspex. A light bulb (resistive load) was connected across the output terminals, and voltage/current variation s with respect to time was measured using appropriate instruments in order to deduce charging, discharging power and efficiency of the fuel cell. Graphs of measured values were plotted to determine their characteristics including the current/voltage (I-V) characteristics curve of the hydrogen fuel cell. Results of measured values and characteristic curves show that hydrogen fuel cell capable of powering electricalloads was produced, and the current density is dependent on the surface area surrounding the electrodes. That is, the wider the surface area around electrodes the higher the electrical energy generated.

This research is geared towards employing modern technology to enhance agricultural productivity through local and mechanized farming systems. The research work involves the construction of a device that controls water flow in an irrigation system most especially, in areas where there is acute shortage of water supply or insufficient rainfall which may be due to climate change resulting or causing draught and other environmental conditions. It is a device that is solar powered, as an alternative source of power supply to the entire irrigation system. The solar power supply consist of two modules or panels, a battery and charge regulator whose function is to control the battery charge and as well supply power to the load (motor) at various weather and soil moisture conditions. The device was tested and it was (is) able to minimize electrical power consumption, with a flow rate of water averaging at 20 liters per minute, due to the pump size and capacity. The humidity of the soil is detected by the soil moisture sensor which determines the voltage levels at which the water pump switches on/off. Also, there is an ultraviolet light sensor that enables the controller to switch off the pump during the period of higher intensity of sunlight, owing to the fact that most crop plants are irritated by water when the sun is very hot. The water pump is a D. C submersible type. An algorithm was designed for the smooth operation of the entire system.

Transformer is one of the most vital components of power transmission and distribution infrastructure. In a developing country such as Nigeria, majority of the growing population of the people are still grappling with gross inadequate and epileptic power supply. Only about 4000MW of electricity is available for distribution (by load shedding) due to decay in existing infrastructure. The aim of this work is to apply modern technology to prevent further decay of the equipments particularly the transformer which is very expensive. This article involves the design and implementation of a device to monitor and detect the operating condition of a transformer with emphasis on power distribution transformers. A module embedded Global System for Mobile communication (GSM) enabled device is designed to monitor load currents and temperature, using a micro-controller and sensor. The monitored values are processed and recorded in the system memory which is programmed with some predefined instructions to detect any abnormal working condition of the transformer so that the GSM module can send a Small Message Signal (SMS) to designated mobile telephones containing information about the fault, base on the programmed instructions into the micro-controller. This will help the power distribution company respond swiftly to abnormalities that may lead to catastrophic failures and subsequent system short down. It is a fully automated device capable of reducing the risk of transportation and human errors associated with manual transformer inspection and testing. The device was tested and it responded very well to fulfill the set objectives.