Papers by Ibrahim Saida haruna
Experimental Investigation of the Performance of Porous-Slope Floating Breakwater
International Journal on Engineering Applications (IREA)
Journal of Engineering Studies and Research
Thermal comfort in a space equipped with a direct evaporative cooler is a function of the height ... more Thermal comfort in a space equipped with a direct evaporative cooler is a function of the height of the cooler's supply air outlet. This article attempts to numerically investigate the impact of hybrid downdraft evaporative cooler (HDEC) supply outlet height on occupant thermal comfort in an office building. DesignBuilder CFD parametric simulations was carried out by varying the height of the HDEC supply outlet from 0.1m to 2.4 m, step 0.1 m above ground level, using Predictive Mean Vote (PMV) as an objective function. The results show that the best PMV of -0.27 was obtained at 0.4m above the floor level.
Abstract: Coconut coir is an agricultural waste that is produced in reasonable quantities in some... more Abstract: Coconut coir is an agricultural waste that is produced in reasonable quantities in some developing countries of the world like Nigeria. This waste is used in some evaporative cooling systems as cooling media. This paper therefore attempts to analyze the performance of coconut coir pad as a media in direct evaporative coolers. In this study, the average condition of 39.9 0C dry bulb temperature and 8.1 % relative humidity of Kano is selected for the analysis. The primary air mass flow rate considered varies between 0.16 kg/s to 0.54kg/s and the performance of the coconut coir pad is analyzed based on the saturation efficiency, leaving air temperature, relative humidity, cooling capacity and water consumption. The results of the analysis of the coconut coir based on the air flow rates considered reveal that the saturation efficiency decreases from 64.7 % to 55.9%, the leaving air temperature increases from 25.20C to 27.10C, relative humidity decreases from 46.4 % to 38.2%, t...
Evaluation of Three Nigeructiian Fibre Sources for Pulp and Paper Prod
This study was carried to search for local raw materials for pulp and paper making in Nigeria. Th... more This study was carried to search for local raw materials for pulp and paper making in Nigeria. The four paper industries in Nigeria are closed down due to lack of availability of raw materials. The companies were relying on foreign materials which they could not sustained. Three Nigerian fibre sources (ceiba pentandra, baggase and rice straw) were pulped using maceration method. Their pulps were analyzed for pulp yield. Hand sheet papers were produced from their pulp and characterized. Properties such as tearing strength, tensile strength, bulk strength, tear factor. breaking force. The tear force of the sample papers produced from silk cotton tree, bagasse and rice straw were found to be 956.48mN, 1226.25mN and759.25mN respectively. The paper samples produced from these three materials posses greater tear force than TAPPI T414 standard 500-700mN.The tear factor and breaking weight of these materials were found to be 162.50m2 and 22.07N, 125.00m2 and 26.00, 147.98m2 and 6.57N respec...
Evaluation of Three Nigerian Fibre Sources for Pulp and Paper Production
A THESIS SUBMITTED TO THE POST GRADUATE SCHOOL, AHMADU ZARIA UNIVERSITY, ZARIA NIGERIA IN PARTIAL... more A THESIS SUBMITTED TO THE POST GRADUATE SCHOOL, AHMADU ZARIA UNIVERSITY, ZARIA NIGERIA IN PARTIAL FULFILMENT FOR THE AWARD OF MASTER OF SCIENCE IN PROCESS ENGINEERING DEPARTMENT OF CHEMICAL ENGINEERING AHMADU BELLO UNIVERSITY, ZARIA NIGERIA
International Journal of Scientific & Technology Research, 2014
Thermal discomfort experience in a built environment is a thing of concern since the quality of m... more Thermal discomfort experience in a built environment is a thing of concern since the quality of man depends on the quality of his indoor environment. This discomfort experience in an occupied space lowers the emotional and physical health of the occupants. This paper attempts to explore the thermal comfort scenario of the residential buildings in Mubi metropolis with the view of proffering measures to improve the comfort of people in their homes. To achieve the desired result, 240 structured questionnaires were distributed to eight wards in the study area. The study reveals that the exacerbation of thermal discomfort in Mubi are attributable to some factors among which are : epileptic power supply, high cost of air conditioning systems, use of good heat conducting materials in buildings, poor building design and use of high heat emitting lighting devices. This however indicates that majority of Mubi residents are thermally uncomfortable in their homes. Based on the findings, effecti...
International Journal of Scientific & Technology Research, 2014
This paper is an attempt to theoretically analyse the performance of direct evaporative cooler in... more This paper is an attempt to theoretically analyse the performance of direct evaporative cooler in hot and dry climate with Kano being the study area. The performance of the cooler was determined at different air velocities at a saturation effectiveness of 50% to 90%. The determined parameters are the leaving air temperature, relative humidity, cooling capacity and the water consumption rates. Th e result shows that leaving air temperature of 21.9 0 C and relative humidity of 82% were obtained with pad material of 90% saturatio n effectiveness. The cooling capacity and the water consumption rates are found to vary linearly with the saturation effectiveness. It is ther efore axiomatic that direct evaporative coolers have high potential of providing thermal comfort for people in occ upied spaces when moderate air velocities are used with pad materials of relatively higher saturation effectiveness.
Mechanization Practice: A Tool for Agricultural Development in Nigeria: A Case Study of Ifelodun Local Government Area of Kwara State
The study investigates the effect of mechanisation/tractorization on arable crops in Ifelodun loc... more The study investigates the effect of mechanisation/tractorization on arable crops in Ifelodun local government areas of Kwara State Nigeria. The Investigative Research Approach Method was employed to retrieve information from farmers through the use of questionnaires. A total of 200 randomly selected farmers (100 each for control and treated) were used for the study. The descriptive statistics (arithmetic mean, frequency and percentage ratio) was used to investigate the socio-economic characteristics. Other tools employed include gross margin analysis and the double log production function. Empirical result showed that the use of tractors as against other conventional farming tools was found to significantly improve arable crop production in the study areas. Farming is a male dominant hobby (95%) with more than half of the respondents spending at least 11 years practicing farming. Land acquisition was mostly by inheritance (68%). The rate of return on investment was N197% suggesting...
International Journal of Scientific & Technology Research, 2014
Coconut coir is an agricultural waste that is produced in reasonable quantities in some developin... more Coconut coir is an agricultural waste that is produced in reasonable quantities in some developing countries of the world like Nigeria. This waste is used in some evaporative cooling systems as cooling media. This paper therefore attempts to analyze the performance of coconut coir pad as a media in direct evaporative coolers. In this study, the average condition of 39.9 0 C dry bulb temperature and 8.1% relative humidity of Kano is selected for the analysis. The primary air mass flow rate considered varies between 0.16 kg/s to 0.54kg/s and the performance of the coconut coir pad is analyzed based on the saturation efficiency, leaving air temperature, relative humidity, cooling capacity and water consumption. The results of the analysis of the coconut coir based on the air flow rates considered reveal that the saturation efficiency decreases from 64.7% to 55.9%, the leaving air temperature increases from 25.2 0 C to 27.1 0 C, relative humidity decreases from 46.4% to 38.2%, the cooli...
International Journal of Scientific & Technology Research, 2014
The realization of thermal comfort through the use of refrigerated-based air conditioning systems... more The realization of thermal comfort through the use of refrigerated-based air conditioning systems is largely impeded by poverty and epileptic power supply. Furthermore, the use of some refrigerants has negative effect on the environment. Evaporative cooling systems are viable options for achieving thermal comfort because, apart from their low cost and power requirement, they are environmentally friendly. This paper attempts to determine the viability of using direct evaporative coolers to achieve human thermal comfort in several West African cities characterized by different climates using the feasibility index method. Employing the concept of the feasibility index reveals the suitability of using evaporative coolers in Agadez, Bamako, Diffa, Jos, and Nema while Conakry, Gagnoa and Port Harcourt are not recommended for the use of evaporative coolers. Evaporative coolers are therefore suitable alternative to refrigerated-based air conditioning systems for achieving human thermal comf...
Annals of Basic and Medical Sciences, 2020
Background: Cleanliness and dirt are a dichotomy to categorize a particular environment especiall... more Background: Cleanliness and dirt are a dichotomy to categorize a particular environment especially hospital settings in which cleanliness pave a great linkage to patient satisfaction on quality of care and reduction of infection. Dirt creates negative thought on the quality of services being rendered to patients in the hospital environment. Objectives: To assess the perception of patients and their relatives on the level of cleanliness in radiology department of Usmanu Danfodiyo University Teaching Hospital (UDUTH) Sokoto and to determine which amongst the diagnostic rooms is the cleanest (Computed Tomography (CT) room, Routine X-rays room or contrast exams room (fluoroscopy)). Materials and Method: A descriptive cross-sectional study was conducted, 100 questionnaires were distributed to the respondents of which 66 in Routine xray room, 23 in CT suit and 11 in contrast examination room. Out of the 100 questionnaires nine were not returned and the remaining 91 were analysed. The ques...
Bioethanol Production from Waste Cotton Lint Using Saccharomyces cerevisiae
Journal of Applied Sciences, 2020
World Journal of Advanced Research and Reviews, 2020
Microcolon is a radiographic feature of a low intestinal obstruction that result from intrauterin... more Microcolon is a radiographic feature of a low intestinal obstruction that result from intrauterine underutilization or what is term unused colon. The finding of microcolon on contrast enema study in newborn with distended abdomen usually suggests jejunoileal obstruction, jejunoileal atresia, meconium ileus, or occasionally totals colonic agangliosis. We are therefore presenting this case to highlight the wonders that imaging will perform in prompt diagnosis and management of this condition.
Study on the Geotechnical Properties of Road Pavement Failures “(A Case Study of Portion Of Malam Aminu Kano Way, Kano State From Tal-Udu Roundabout To Mambaya House Roundabout)”
Journal of Geotechnical Studies, 2020
Investigation upon engineering properties into the causes of road Pavement Failures “(A Research ... more Investigation upon engineering properties into the causes of road Pavement Failures “(A Research Study of Segment of Malam Aminu Kano Way, Kano State from Tal-udu Junction to Mambaya house Roundabout) Dala government of Kano state, was carried out. Visual condition survey was carried to assess the types and degrees of distresses. The results showed that, the portion of road was in a bad condition as at the time of this study. Soil samples of various layers were collected and the geotechnical properties were tested for. The test results revealed that, for CBR value ranges from 23.77% to 26.35% with an average value of 24.92%, for sub-grade, and CBR values ranges from 82.3% to 92.8% with an average value of 87.55%. According to the specification of the Federal Ministry of Works and Housing of Nigeria, Clause 6201, for materials to be suitable for base course and sub-base, it must have liquid limits of not greater than 35%, plasticity not greater 12% and CBR value of not less than 30% (24 hours soaking). For sub-grade, liquid limits must be higher than 50% plasticity index of not more than 30% and CBR value of minimum of 6% (24 hours soaking). Therefore, the results showed that, the road-base materials were not fit in terms of Liquid Limit (LL) and Plasticity Index (PI) specifications. But sub-base and sub-grade, satisfied both Liquid Limit and Plasticity Index specifications. The road-base and the sub-base were found not satisfying the California Bearing Ratio (CBR) specifications, but the sub-grade did. The drainage and materials used for the construction especially, the base and sub-base were one of the major causes of pavement failures of the road portion. However, recommendations were provided, among which includes: suitable materials should be used for pavement construction; Drainage should be properly constructed and maintained after construction; more research should be carried out on this same in order to establish other causes of its failures.
Effect of crude oil spillage on engineering properties of tropical residual soil
IOP Conference Series: Earth and Environmental Science, 2020
Oil exploration in Nigeria causes serious environmental degradation. Little is known about the ef... more Oil exploration in Nigeria causes serious environmental degradation. Little is known about the effects of crude oil spillage on soils found in northern Nigeria where oil exploration started less than two years ago (2018). This research is a comparative analysis of the effect of crude oil on contaminated and uncontaminated soil typically found in northern Nigeria. Five Trial pits were dug at Bayero University Kano, two of the trial pits were filled with 20 litres of crude oil while the remaining three trial pits were left uncontaminated and used as control. The crude oil was allowed to infiltrate into the soil for about six (6) weeks before samples of soil were obtained for laboratory analysis. Maximum dry density (MDD), natural moisture content, California Bearing Ratio CBR value, cohesion, and Atterberg limits test were used to analyse the soils. Average natural moisture content was found to be 21 % for uncontaminated soil and 8% for contaminated soil, the MDD value was 1.80 g/cm3 ...
Journal of Modern Manufacturing Systems and Technology, 2020
The gas expansion process that takes place in a piston cylinder assembly have been used in numero... more The gas expansion process that takes place in a piston cylinder assembly have been used in numerous applications. However, the time-dependent process of heat transfer is still not fully apprehended as the expansion processes are complex and difficult due to the unsteady property of the turbulent flow process. Internal combustion Engines(ICE) designs are conducted with the aim of achieving higher efficiency in the thermal characteristics. To optimize these designs, numerical simulations are conducted. However, modelling of the process in terms of heat transfer and combustion is complex and challenging. For a designer to understand, calculate and quantify the thermal stresses and heat losses at different sections of the structure, understanding the piston-cylinder wall is needed. This study carried out a numerical simulations based on Finite Element Method (FEM) to investigatethe stresses in the piston, and temperature after loading. Appropriate boundary conditions were set on differe...
Production of Biolubricant From Castor Oil
Nigeria Annual International Conference and Exhibition, 2017
In this research, bio-lubricant was produced from castor oil in two stage processes where methyl ... more In this research, bio-lubricant was produced from castor oil in two stage processes where methyl ester of the oil was produced by esterification and then transesterified using homogenous catalyst (NaOH). It was then blended with 15w/w% of Sodium Lauryl Sulphate (SLS) to produce bio-lubricant. By varying the amount of homogenous catalyst (1.0-1.2 w/w %), three (3) different grades of bio-lubricant samples were produced and subjected to physical and chemical test to determine their characteristics. The three grades of the bio-lubricant samples weighs 88.76g, 125.23g and 162.61g respectively with varying degrees of kinematic viscosity of 89.68, 67.24 and 58.01cst respectively at 40°C, and 8.14, 7.92 and 7.59cst respectively at 100°C. The viscosity indexes of the three samples are; 32, 78 and 91, pour points are −21, −18 and −18°C, and the flash points are 215, 211 and 223°C respectively for each of the samples. The properties of the biolubricant samples indicates that they can be used ...
Greener Journal of Science, Engineering and Technological Research, 2016
The growing demand of electric power supply in Nigeria necessitates the integration of renewable ... more The growing demand of electric power supply in Nigeria necessitates the integration of renewable energy resources into the country's energy mix which is in consonance with the global energy transition. This paper is an attempt to theoretically evaluate the potential of human waste (faeces) for the electrification of a modest residential building (3bedroom flat) with six occupants. The daily electrical energy demand of the building is estimated to be. ܐ܅ܓ while the daily electrical energy value of the biogas produced by the excreta of the six occupants is. .ܐ܅ܓ This shows that the daily quantity of excreta of the six building occupants is inadequate to meet the daily electrical energy demand of the building. Therefore, hybrid system should be employed if the building is to be effectively electrified. Individuals and government at all levels are implored to embrace this emerging technology because of its potential of not only generating biogas for electricity generation or cooking, but also for fertilizer production, protection of the environment and mitigation of sanitation problems.
Motivational factors as correlates of employees' performance in Ramat Library, University of Maiduguri
Annals of Borno, 2002
European Journal of Plastic Surgery, 2011
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Papers by Ibrahim Saida haruna