Open Access Original Research Article

Photovoltaic (PV) Model Evaluation with Maximum Power Point Tracking (MPPT)

R. I. Areola, F. T. Oyediji, E. A. Olajuyin

Journal of Engineering Research and Reports, Page 1-8
DOI: 10.9734/jerr/2021/v21i217440

The use of solar energy is widespread due to increase in its demand across the world. This is because this form of energy can supply steady, stable, regular and clean energy. Evaluation of  PV (photovoltaic) model with maximum power point tracking (MPPT) using matlab/simulink cell model for estimating the I-V characteristic curves of photovoltaic panel with respect to changes on environmental parameters (temperature and irradiance) and cell parameters (parasitic resistance and ideality factor) were evaluated. The PV model equations were modelled and simulated using MATLAB/SIMULINK Approach. This paper confirmed the usefulness of MATLAB/SIMULINK in the development of MPPT (maximum power point tracking) algorithm. Using a Shockley diode equation, an accurate simulink PV panel model was developed. It was concluded that the MPPT is able to achieve maximum power output when there is variation in solar irradiance.

Open Access Original Research Article

Failure of Public Building Projects: An Investigation of Abandoned Hospital Projects in Imo State, Nigeria

Uche Felix Ikechukwu, John Chiagoghalamuoke Ozuzu

Journal of Engineering Research and Reports, Page 9-20
DOI: 10.9734/jerr/2021/v21i217442

Failure and abandonment of government projects have been a global phenomenon. The study aims at evaluating factors involved in the abandonment of the proposed hospital building projects in the 27 local government areas in Imo State, Nigeria; with a view to developing a framework that will be used as a guide to revive the abandoned health facilities. Among the specific objectives is to evaluate the factors responsible for the abandonment, compare the performance of the procurement method used for the hospital project with other procurement methods, and to assess the effects of the abandoned hospital projects on the socio-economy and environment of Imo state. The targeted population includes the 4 members of the community government Council (CGC) and the building production professionals in the study area. Field survey research method was adopted for collection of both parametric and non parametric data. Ranking of the factors of abandonment was done using the Relative Importance Index (RII), student t-test and ANOVA were use to carry out tests on differences amongst variables of two and more than two sample populations respectively. Chi-square test was used to ascertain dependency of factors of casual relationships. Findings show that the three most significant factors that could cause the abandonment of the hospital project are; poor project implementation, negative politics practiced by the government, and inadequate structure to ensure continuity of projects. The study also finds that the failure of the abandoned project does not depend on the procurement method used. Again, the condition of contract used on the abandoned hospital project is deficient. Lowering of living standard, lack of trust on the government by the citizenry, and visual defects of the environmental are the three most significant implications of the abandoned hospital projects on the socio-economy and environment of the Imo state are. The study however succeeds in developing a framework which can be used as a guide to revive the abandoned hospital project in Imo state; through integration of structure for developmental continuity from one administration to the other, and independent body of monitoring and implementation responsibilities. It is therefore recommended that the ingredient contained in the frame work be applied in the study area.

Open Access Original Research Article

Evaluation on the Use of Plants and Equipment in Building Project Delivery in Imo State, Nigeria

Uche Felix Ikechukwu

Journal of Engineering Research and Reports, Page 21-30
DOI: 10.9734/jerr/2021/v21i217443

Modern construction is characterized with complex designs, new and innovative materials that are sensitive with high precision. In addressing the accompanying challenges, mechanization of construction process is said to be the guarantee especially in this era of crash programmes and advancement in technology to reduce poor workmanship and eliminate avoidable holdup in construction processes in the industry. Amidst this belief, attributes of construction industry in Imo state still reflect ineffectiveness in the use of plant and equipment. Hence, the study assesses the involvement of plants and equipment in building delivery for improved project performance. Field survey and work measurement methods were adopted to gather both non-parametric and parametric data respectively. The survey design targeted the sampled building professionals while work measurement focused on selected earth and concrete works in the area of the study. Inferential and descriptive statistical tools of Chi-square on likert scale and Comparative measurements on work activities respectively were used to analyze the respective non-parametric and parametric data. Findings show that selection of various plants are dependent on their rates of use for increased site work productivity; while the socio-economic and political issues as militating factors against effective use of plants are determined by their levels of acceptance. It was also discovered comparatively that mechanization of construction processes is more time and cost effective in building project than manual approach at work. The study therefore recommends that a systematic and holistic awareness be created by the stakeholders on the usefulness of mechanization of construction process in physical development. Besides, government should enforce construction methodology plan as a mandatory document for approval of any building plans; while frantic effort should be targeted at reviving the abandoned steel manufacturing industry at Ajeokuta, Ogun state to revolutionize the construction methodology of construction industry in Nigeria.

Open Access Original Research Article

Design and Construction of Smart Vehicle Security System Using GPS and Spy Cam

A. D. Babalola, M. S. Olokun

Journal of Engineering Research and Reports, Page 31-47
DOI: 10.9734/jerr/2021/v21i217444

Aims: Vehicle security is critical in today's world because car thefts are on the rise. robbery, and impersonation are among the crimes committed against automobiles. As a result, keeping track of and safeguarding vehicles has grown to be a significant problem in modern life.

Study Design: The system combines GPS (Global Positioning Service), GSM (Global System for Mobile Communications), and Spy Cam technologies interfaced with an Arduino UNO to track the location of a car in real time.

Methodology: Short Message Service (SMS) messages are sent to the user or Vehicle authority mobile phone together with images of the current vehicle operator when SMS with the word "Track" is composed and sent to the SIM number inserted into the GSM module. BLYNK Android application serves as database for storing and  retrieving cloud information when requested.

Results: The vehicle current location and the image of the current user will be displayed on Google Maps application of the sender. This technology enhances mobile vehicle security and avoid loss and impersonation. An SMS security warning is also sent to the owner when there is a lot of movement in front of the camera.

Conclusion: This system helps in detection and reporting of vehicle theft in real time. It can be employed in individual cars since it is affordable; also vehicle safety authorities can employ this technology to help them secure vehicles better.

Open Access Original Research Article

Design and Kinematics Analysis of Suspension System for a Formula Society of Automotive Engineers (FSAE) Car

K. Sriram, K. Anirudh, B. Jayanth, J. Anjaneyulu

Journal of Engineering Research and Reports, Page 48-63
DOI: 10.9734/jerr/2021/v21i217445

The main objective of the Suspension of a vehicle is to maximize the contact between the vehicle tires and the road surface, provide steering stability and provide safe vehicle control in all conditions, evenly support the weight of the vehicle, transfer the loads to springs, and guaranteeing the comfort of the driver by absorbing and dampening shock. This paper discusses the kinematic design of a double a-arm Suspension system for an FSAE Vehicle. The hardpoint’s location can be determined using this procedure to simulate motion in any kinematic simulation software. Here, Optimum Kinematics is used as kinematic simulation software, and the results are verified using Msc Adams simulation. The method illustrated deals with the basics of Kinematics which helps to predict the characteristics of the Suspension even before simulating it in the kinematic simulation software.

Open Access Original Research Article

Evaluation of Land Capability for Housing Deveopment at Nachi Built Environment, Enugu State, Nigeria

Augustine Akunne Onunkwo, Uche Felix Ikechukwu, Cletus Nnamdi Nwamadi

Journal of Engineering Research and Reports, Page 64-73
DOI: 10.9734/jerr/2021/v21i217446

There are criteria that certify the sustainable potentials of any built environment. Low income housing scheme proposed by Enugu state government for its workers is targeted at Nachi, Udi local government area in Enugu state, Nigeria. To assess the capability of this location for the project, site investigation and experimental design methods were adopted to measure the geo-morphological and hydrologic features and conduct laboratory tests on the basic and strength properties of the formation respectively. Findings explain that Nachi lies on the slope of 700; hence the average runoff is high. Prolific confined aquifer result to underground water potential for consumption since the formation is porous with high elevation at 221 meters. It is also discovered that the area possesses low shear strength which is capable of resisting the high shear stress measured in the soil sample of the formation. Soil plasticity is measured as 10 indicating high erodible potential. The particle size distribution of the formation is poorly sorted with high percentage of sand particles, and very low percentage of gravel, with intercalation of compressible particles in the formation. The rain intensity is measured high with very high rate of runoff potential that is capable of causing erosion on the sloppy terrain with low bearing strength. The study therefore concludes that Nachi as a proposed site for the low housing scheme is not suitable considering the fact that the initial cost involved in preparing standard foundation of the buildings and the surrounding for sustainable housing will make it exorbitant for the low income earners. Any effort to compromise doing the right things from the beginning for a sustainable housing will degenerate the housing to high maintenance culture when in use. In the absence of no other available land the study therefore recommends that edicts and official programmes be enacted and instituted respectively to curb down erosion menace in the area with standard foundation designs that will guarantee safety to the buildings effectively in the area. If the housing scheme must stand for the low income earners the government must as matter of policy subsidize the cost of the houses reasonably such that the workers in the state can easily afford them.