An admixture burner for the atomization and combustion of used engine oil and kerosene for foundry application was constructed and tested to reduce the cost of operation in the foundry since the fuel is easily accessible, in addition to avoid pollution by the incessant dumping of the used engine oil. The nozzle, springs, screws, tank and the fuel hose were predominantly used materials for its construction. A test was carried out to determine the time taken for some selected engineering materials (copper, aluminum, brass, and lead) to melt using the admixture burner with an appropriate combination ratio of 1:5 for kerosene and used engine oil and the ratio of 15:1 for air and fuel respectively, which was considered to be the most reactive, because it ignites easily compared to other ratios. The time taken for 1kg of each selected engineering materials to melt were 49, 15, 22 and 7 minutes for copper, aluminum, brass and lead respectively. The burner has a thermal efficiency of 66%. Experiment also showed that that the density of the admixture, decreases with an increase in the temperature making it easy to mix and ignite for combustion.

The project focuses on design modification and simulation of a new type of trolley with multifunctional ties. The device was redesigned to have three wheels in a triangular pattern that can be switched into three different working positions to aid in moving of heavy load through a desired vertical height. The project utilized concept generation and selection matrix to generate 30 possible design concepts. These concepts were pruned using concept scoring matrix to three (3) designs. Weighted Scoring Matrix was deployed to screen and rank three best designs. The project design was done using AutoCAD, SolidWorks and Ansys for load/stress analysis of each component. SolidWorks (SimXpress) was deployed for static analysis of the trolley components. Simulation result revealed a weight reduction from 200 kg to 15.3 kg and maximum stress of 7.13 x 108 N/m2 with a 1.5 factor of safety. The trolley design modification shows trolley as a viable option for stair-climbing with lesser physical energy, higher workload capacity and better efficiency.