Comparative Study Of Thermal Properties Of Some Common Roofing Materials In Nigeria

The purpose this text is to present at a primary and intermediate level a comprehensive over view of the construction principles and indeed the operation of a power amplifier with 100w as the output power. The history and importance of electronic as a unique braches of science cannot be over emphasized electronic as its history might have it is divide into sections the first began with the invention of the vacuum tube the second occupy […]

This work is titled construction and fabrication of an ice block making machine. Ice block making machine revolves around the concept of refrigeration. The concept of refrigeration revolves around the reverse Carnot cycle. This is a cycle involving isentropic expansion (at the throttling valve), isothermal expansion (at the evaporator), isentropic compression (at the compressor) and isothermal compressor ( at the condenser) Compression […]

The 200W solar system was determined by load assessment, solar panel number determination, battery requirement and then inverter sizing. A complete solar panel rated at 200w was however purchased, together with 2 no. 150A solar battery, 1500W inverter and also 10A charge controller. These were assembled together with necessary protective gadgets like cut out switches; to give the 200W expected. The solar panel was mounted outside the b […]

This project report is a thesis written specifically to cover the design analysis construction, test and packaging of a multipurpose security system from electric component that can be easily be obtainable from the market. The report discusses the various unit and stages of the alarm system, thesis include:- a) Clock generation and frequency division unit. b) The control and section unit, comprising of a one shot 555 timer multiplexer, […]

This project is titled the design and construction of a DC to AC inverter system. It is designed to meet up with the power demand in the offices and in homes in the absence of power supply from the national supply authority, NEPA. In order words the device / item serves as a substitute for NEPA which almost monopolises the power supply to people. It is designed in such a way that it will take up 12v DC from battery and inverts it to an […]