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Browsing Renewable Energy Alternatives by Subject "Kenya Industrial Research and Development Institute"
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Publication Biogas Technology in Kenya(KIRDI, 2021-06-15) Lumadede H.M.*, Wangai L., Kwach S., Khalifa J. and Mbithi V.Research into biogas production and sustainability in Kenya is in progress at Kenya Industrial Research and Development Institute (KIRDI) through its biogas laboratory. Biogas production is one of the renewable energies which we use in Kenya. Biogas importance, development, opportunities and the economical and sustainability in Kenya are discussed. The full exploitation of Kenya ‘s agricultural potential will yield a lot of biomass through which innovative use of the available bio waste from maize, cotton, tea and sugarcane can be utilized. Present and emerging biogas technologies convert these biowaste into renewable energy, thereby replacing the expensive fossil energy sources, and reducing dependency on fossil fuels. Other substrates like water hyacinth and molasses distillery waste have been found to be a good source of biogas. This review examines the energy potential of biogas production from crop residues. The findings will promote biogas addition to the energy mix Kenya needs as well as providing approaches, achievements, lessons learnt and other relevant aspects of domestic biogas programmers. It aims to achieve a greater, more effective use of biogas and contributes to the process by providing knowledge of biogas use in Kenya and its potential. Development partners are supporting the implementation of market-based domestic biogas programmers in Kenya with a view to establish a commercially viable biogas sector.Publication Environmental Science Biogas Technology in Kenya: A Review(Journal of Environmental Science, Computer Science and Engineering & Technology, 2021-07-22) Mudoga, Humphrey Lumadede; Wangai, Lucy; Kwach, Sarah; Mbithi, Victor; Khalifa, JoanResearch into biogas production and sustainability in Kenya is in progress at Kenya Industrial Research and Development Institute (KIRDI) through its biogas laboratory. Biogas production is one of the renewable energies which we use in Kenya. Biogas importance, development, opportunities and the economical and sustainability in Kenya are discussed. The full exploitation of Kenya 's agricultural potential will yield a lot of biomass through which innovative use of the available bio waste from maize, cotton, tea and sugarcane can be utilized. Present and emerging biogas technologies convert these biowaste into renewable energy, thereby replacing the expensive fossil energy sources, and reducing dependency on fossil fuels. Other substrates like water hyacinth and molasses distillery waste have been found to be a good source of biogas. This review examines the energy potential of biogas production from crop residues. The findings will promote biogas addition to the energy mix Kenya needs as well as providing approaches, achievements, lessons learnt and other relevant aspects of domestic biogas programmers. It aims to achieve a greater, more effective use of biogas and contributes to the process by providing knowledge of biogas use in Kenya and its potential. Development partners are supporting the implementation of market-based domestic biogas programmers in Kenya with a view to establish a commercially viable biogas sector.Publication Prediction of Airflow and Temperature Distribution in Hybrid Solar-Biomass Dryer using Computational Fluid Dynamics(JOURNAL OF SUSTAINABLE RESEARCH IN ENGINEERING, 2018-09-15) Aukah, Jackis; Muvengei, Mutuku; Ndiritu, Hiram; Onyango, CalvinHybrid solar-biomass dryers present a viable option for drying maize since continuous drying can be achieved. However,non-uniform drying of the product may occur in the drying chamber due to poor airflow distribution. Several studies have beenreported on modeling of solar dryers for drying of agricultural products but most researchers use one dimensional models basedon thermal analysis to simulate the drying process but this approach can only describe the flow variable in one defined directionalong the domain and therefore, cannot effectively reveal information on air flow patterns which is considered crucial foroptimization process. Three dimensional approach that provides a more realistic simulation of the drying process is necessary foroptimization of the performance of the dryer. The aim of this study was to develop a mathematical model for predicting thetemperature and air velocity distribution in hybrid solar biomass dryer. The model consists of the full set of partial differentialequations that describe the conservation of mass, momentum and heat inside the dryer. The standard model was used to describeturbulence in addition to the governing conservation equations. Simulation was done using ANSYS CFX which is a general purposeComputational Fluid Dynamics (CFD) package. The simulated airflow pattern and temperature distribution on the horizontal andvertical planes in the drying chamber was analyzed and the result revealed spatial homogeneity of drying air condition. The modelwas validated experimentally and the results showed a reasonable agreement between the experimental and simulated results witha small variation of about 0.7 0 C. This indicate that the model prediction was reasonably accurate.