http://repository.pauwes-cop.net/handle/1/165 2026-07-26T17:35:16Z 2026-07-26T17:35:16Z ZLITNI, Nesrine http://repository.pauwes-cop.net/handle/1/369 2020-01-28T13:13:15Z 2019-10-01T00:00:00Z

Realization of a reduced model of a water distillation station by solar energy: Case study in Africa for Consumption or Irrigation ZLITNI, Nesrine This study concerns the use of clean energy for technical purposes; so we were interested in a simple technique for desalination of seawater, in this case, the distillation by solar radiation. At the beginning of the study we focused on different solar distillation processes with theoretical description of the phenomenon. Subsequently, we defined, in general, the radiation in Algeria, before proceeding directly to the practical part of solar distillation by the use of a prismatic glass test bench. The prototype used at a distillation capacity of 20 litters, it can be moved to the place deemed appropriate, and is equipped with temperature and humidity sensor transmitting the measurement to an Arduino Uno allowing to display the results on an LCD screen or recorded on PC. Thus, after sampling of seawater, tests and measurements were made on the prototype, placed in a sunny spot near the University of PAUWES, followed by laboratory analysis and discussion of the results. The various measurements and analyses carried out have demonstrated that the prototype is suitable for the distillation of brines, the salinity level analysed indicates that distilled water is even good for domestic consumption.

2019-10-01T00:00:00Z Salah, Salah Eddine http://repository.pauwes-cop.net/handle/1/351 2020-01-28T13:13:15Z 2019-09-02T00:00:00Z

A Study of Hydroelectric Power Supply in the West of Algeria Salah, Salah Eddine There is a growing awareness that climate change is causing major disruptions to the environment with rising sea levels, disruptions to wildlife and plants, and impacting agriculture, health and countries’ economies. Huge amounts of fossil fuels (such as coal, oil and gas) are being burnt causing the release of record levels of carbon dioxide into the atmosphere. Presently, Algeria has enough hydrocarbon reserves that cover its present energy needs. Alternative energy resources, namely renewable energies have to be developed in order to both provide for its future energy needs and as alternative sources of income as well. One of the renewable energy resources that can be developed is hydroelectric energy from water supply networks. In this thesis, a study is presented of the performance of a micro-hydropower plant by using supply water system. A water supply network in the west of Algeria with high enough piezometric head is considered to be an important source of hydroelectric power generation. The Belgaid-Kristel water supply system is taken as the present case study. Both design and cost analyses have been carried out of a micro hydro power station mounted on this supply system. If 100% efficiency is considered, the generated power reaches 136KW. However, if total head loss is deducted and considering an overall efficiency of 95%, the generated power reaches 135 KW. The Pelton turbine was selected according to the head an flow rate available The major design parameters are the number of buckets Nozzle diameter, and rotational speed. An experimental study was performed in order to compare the performances of both impulse and reaction turbines have shown the following: Both efficiency and power output for both types of turbines show an increase with increasing flow rate. They also increase with increasing turbine speed reaching a maximum value before decreasing. It was noted that for a given pump speed, maximum efficiency and brake power for the impulse turbine always occur at the same turbine speed at all flow rates.

2019-09-02T00:00:00Z Frank Prosperous http://repository.pauwes-cop.net/handle/1/313 2020-01-28T13:13:15Z 2019-10-01T00:00:00Z

Solar Pumping System for Rural Water Supply and Small Scale Irrigation Schemes, A Case Study of Regional Hubs ff Islamic Development Bank, Rabat, Morocco; Dakar, Senegal; Abuja, Nigeria . Frank Prosperous Non-renewable energy sources usage for water pumping in African communities threatens the energy security of our continent and contribute to climate change through the use of environmental unfriendly energy sources. These indigenous energy sources may lead to loss of economic and environmental viability due to widely use of diesel motors. This research analyzed the technical, social and economic feasibility of solar water pumping system as an alternative clean energy source. Before conducting a thoroughly detailed designs and analysis of the cost, introductory information about the accessibility of identified sites and all necessary materials were acquired through site maps and local SWPs suppliers. Site conditions as well as all materials and methods to collect information were included but not limited to literature review, site visit and physical observation, interview, consultation, photograph, software and checklists. This study found that system oversizing and downsizing affects the technical and economic performance. 11 out of 17 surveyed projects in Tanzania have negative NPV i.e the value of cash flow is less than the investment cost of the project for the duration of 20years. Investment cost of the systems increases with an increase of array capacity however in same cases the same array capacity may be having different investment cost in different areas. According to IRENA the unit cost of PV system is Africa is averaged to USD 1.30 (IRENA, 2016), but the average cost per watt of surveyed installed systems goes to USD 5.6, and this may vary from one country to another due to different external factors such as transportation and labour cost.

2019-10-01T00:00:00Z Rutibabara, Jean Baptiste http://repository.pauwes-cop.net/handle/1/241 2020-01-28T13:13:15Z 2018-09-01T00:00:00Z

Environmental and Economic Cost Analysis of a Solar PV, Diesel and hybrid PV-Diesel water Pumping Systems for Agricultural Irrigation in Rwanda: Case study of Bugesera district Rutibabara, Jean Baptiste Rwanda agriculture sector has a significant impact on country’s economy whereby 80% of population depend on agriculture. Poor performance of agriculture sector affects economic development in different angles as 91% of food consumption and 34% GDP are from national agriculture. One of the critical problems currently being faced by Rwandan government is to ensuring sustainable food production. Many irrigation projects were started with the principal objective of enhancing agricultural production while avoiding dependence on rain-fed agriculture, but the problem of power to pump water is still a major barrier. Therefore, that’s why several economic analyses have been conducted in this thesis to establish the most cost effective solution for irrigation and to evaluate the project profitability toward the country’s vision 2020. This study intends to analyze environmentally and economically the cost of a solar PV, Diesel and hybrid PV-Diesel water pumping systems for agricultural irrigation in Rwanda.The HOMER optimization software was used to evaluate both the environmental and economic viability of the proposed pumping systems by taking into account the variations of both the solar radiation and diesel price. Although this master thesis has used Bugesera (Rwanda) as case study, PVWP technology can be applied for agricultural irrigation purposes all over the world especially in rural areas applications leading to higher incomes and better living conditions for farmers. Results show that using PVWP systems for agricultural irrigation is the most profitable when compared to the rest two alternatives. It was found that the costs of producing one unit of energy by PV system are lower than the rest two systems. The HOMER results show that COE for solar PV, Diesel and hybrid PV-Diesel systems are 0.192, 0.367 and 0.289 $/kWh respectively. Finally the research found that by replacement of DWP with PVWP systems results to reduction of CO2 emissions by 14.48 tonnes over DWP and 1.25 tonnes over hybrid PV-Diesel systems yearly. Although, PVWP has more advantages of reducing CO2, there are also some disadvantages such as soil, farmland and grassland degradation and wildlife disturbance. However, Solar PV water pumping systems can contribute significantly positive to Rwanda economic development if all the identified barriers are well removed.

2018-09-01T00:00:00Z