Top three projects for the year 2011
1. TITLE: Glass Reinforced Plastic Tanks as an Alternative to Galvanized Hot Water Tanks
OWNERS: Nzove S. Nduku and Kilimo Chemeito Moses
ABSTRACT
Over the years, solar heater storage tanks have been made of galvanized steel. The design and fabrication of the solar heater storage tanks from galvanized steel has shown to be totally within the present state-of-art but long term durability of the tank is questionable.
The corrosion of domestic hot water tanks involves destruction by electrochemical action of galvanized steel in presence of water.
Although the galvanized layer prevents corrosion of the underlying steel layer, the tanks are still corroded. Depending on the sunshine intensity, the temperatures of the water in the tank fluctuate and can go as high as 600C. Since corrosion is directly proportional to temperature, therefore, at this elevated temperature, the tank corrodes.
This project was undertaken to evaluate the technical and economic feasibility of design and fabrication of a solar heater water storage tank using Glass Reinforced Plastic (GRP) as an alternative structural components.
2. TITLE: Design and Fabrication of A Simple Vacuum Preservation System for Domestic Application
OWNERS: Meshack Hawi and Bernard Otieno Owiti
ABSTRACT
Kenya is an agricultural country. Most of the produce gets spoiled quickly due to lack of proper food/produce preservation facility that can easily and conveniently be accessed by the farmers, traders or consumers. The existing methods of food preservation are either expensive or have certain limitations. These limitations and cost limit the use of these preservation methods.
The methods of food preservation that has been used and still in use range from traditional e.g. smoking, drying, salting and heating to modern methods like pasteurization and refrigeration. Refrigeration which is the most commonly used has certain weaknesses such as prohibitive cost of the equipment and continuous reliance on power for operation. It also causes freezer burn in some food types.
The project involved the design and fabrication of a vacuum preservation machine to address the limitations of the existing and commonly used food preservation methods. The vacuum preservation machine is designed to extract air from a bag or a container in which the product to
be preserved is placed and then sealed to make it air-tight so that an oxygen free environment is created around the product. A vacuum pump is used to extract air from the confined space and then an electric heat sealer used to seal the bags carrying the product.
The machine can be used in the preservation of agricultural products such as cereals and vegetables. Other areas of application include preservation of perishable products such as fish, meat and biological specimens. The vacuum preservation machine can also be used to protect electronic components that are sensitive to oxygen i.e. that corrode in presence of oxygen and moisture.
3. TITLE: Conversion of Electrostatic Precipitator Filter to a Combined Jet Pulse and Electrostatic Precipitator Filter
OWNERS: Auka V. Maureen and Kariuki Samuel Ndegwa
ABSTRACT
Particulate matter is the primary pollutant emitted from the manufacture of Portland cement. Because of the raw materials used, almost every operation in the cement plant has the potential to produce dust. Exhaust from the kilns is the largest source of particulate emission in cement plant. The second and third largest sources are the clinker cooler and the raw mills respectively.
Electrostatic precipitators (ESPs) have been used to reduce particulate emissions from cement kilns, coolers and mills in cement plants. In recent years, several developments have been made as well as significant progress in filtration media such as bag collector, which is a viable alternative to ESPs.
In order to achieve the optimum solution for dust filtration efficiency, Bamburi Portland Cement Company does not have to remove the existing ESPs. However, it is proposed that the invented hybrid technique to be used hand in hand with the existing one. That will enable them to evaluate the performance of both techniques. The new combined filters are fitted with ESP and tetrex filter bag technology and are capable of removing 10t/day of dust from the raw mills. This ensures that the product from the overflow of the raw mills circuit cyclone is removed and that dust emissions from the filter systems are kept well below 30mg/m3 level. Additionally, the filter and the ductwork are covered to avoid condensation.
This system of filtration can in future be installed on site to have a complete walkway, access platforms, fans, and ductwork and dust removal screw conveying systems.
The main advantages of this project are:
* There is greater reduction in overall electric cost necessary to run the filter.
* Increased efficiency of dust filtration.
* The filter system provides high dust holding capacity in conjunction with a slow rise in pressure drop –thus long life times.
* There is minimal risk of explosions i.e. carbon monoxide can be present in the exhaust gases without a risk of explosions unlike in the case of ESPs alone.
* Pulse-jet baghouse have the capability of online maintenance.
* Stricter emission regulations (by the government and Portland cement Company) through all operating conditions which leads to lower emissions.
* Advancement in filter media increases a bag life which ensures lower operating cost.
The project was based on the theme Vision 2030 and National Industrialization Policy Chapter 2:16 For Cleaner Production and Environmental conservation.
This project involved development of a Resource Efficient and Cleaner Production (RECP) programs. With the 1st policy statement on cleaner production and environmental conservation being to promote investment in local manufacturing of resource efficient and cleaner production equipment along with other emerging technologies.
BSC. MECHANICAL ENGINEERING YEAR 5 2011/2012
|
NAME |
PROJECT TITLE |
SUPERVISOR |
| KIPROTICH C. Benard | Design, Fabrication and Performance Testing of a Vibratory Screen Separator | Mr. H. O. Juma |
| KIPKEMEI O. Maswai | ||
| CHIWAI K. Elijah | Design, Fabrication and Testing of a Pedal Powered Water Pump | Mr. G. Kyove |
| NGOME M. Adam | ||
| MAKANYENGO Julius O. | Design and Fabrication of a Juice Extraction Machine | Prof. S. M. Maranga |
| NGERU T. Ngigi | ||
| KEMBOI G. Kiprotich | Design and Fabrication of a Manual Powered Chipper | Mr. R. M. Mutevu |
| OKWARO C. Wangala | ||
| GACHERU C. Kariuki | Design and Fabrication of a Pedal Operated Drilling Machine | Mr. R. M. Mutevu |
| LUSIGE Alex Nanyeso | ||
| MUSAMALI B. Wafula | Redesign and Fabrication of a Moped | Mr. J. K. Kimotho & Mr. J. Mutua |
| NAWERA E. Wegulo | ||
| NDERITU Kelvin Gitonga | Redesign and Fabrication of a Biomass Powered Food Drier | Mr. H. O. Juma |
| KOO D. Nyanganka | ||
| MURANO N. Elisha | Design and Fabrication of a Wind Powered Lagoon Aerator | Mr. J. K. Kimotho |
| NDERITU P. Mathenge | ||
| NG’ETHE John | Establishment of Capacity and Performance Characteristics of the Fruit Juice Extracting Machine | Mr. R. M. Mutevu |
| ONYANGO J. Atieno | ||
| NGUGI Philip Kuria | Design and Manufacture of Charcoal Bricket Making Machine | Mr. H. O. Juma |
| KYULE Festus Nguvi | ||
| MARY Edwin Maina | Design and Fabrication of a Fruit Grading / Sorting Machine | Mr. R. M. Mutevu |
| NJOROGE J. Thandi | ||
| KIARIE Samuel Kamau | Design and Fabrication of a Simple Soap Extrusion Machine | Mr. H. O. Juma |
| MWANGI Julius Kinuthia | ||
| NZOVE S. Nduku | Glass Reinforced Plastic Tanks as an Alternative to Galvanized Hot Water Tanks | Mr. K. Kiragu |
| KILIMO Chemeitoi Moses | ||
| OBIKO Japeth Oirere | Design and Manufacture of a Stove for Making Coke and Other Products from Coal – Operations and Testing | Prof. S. M. Maranga |
| KIURA M. Kennedy | ||
| KAHIGA W. Miriam | Packaging of Biogas | Dr. B. W. Ikua |
| MACHARIA N. Wanjeri | ||
| BOIT K. Samuel | Design and Fabrication of a Cross Flow Turbine for Mini Hydro Schemes | Prof. S. M. Maranga |
| KIBET Denis | ||
| KIPLAGAT Eric Kimayo | Design and Construction of a Hydraulic Ram Pump Using Foundry Technology | Prof. S. M. Maranga |
| MAINA Kago Paul | ||
| OCHIENG M. Hawi | Design and Fabrication of a Simple Vacuum Packer for Domestic Application | Mr. H. Ndiritu |
| OWITI O. Bernard | ||
| KINUTHIA John | Design and Fabrication of an Injection Molding Machine for Plastic Recycling | Mr. K. Kiragu |
| MACHARIA Dennis Murigi | ||
| APUTSA J. Ken | Design of a Safety and Productivity Enhancement System for Cadbury Kenya Limited | Dr. S. M. Wanjii |
| NTONGAl P. Muchui | ||
| MRAMBA Joseph Sampuli | Design and Fabrication of an Ice Cube Making Machine | Dr. S. M. Wanjii |
| TUNGA Tunje Davis | ||
| ONSONGO Michael Mosiere | Compressorless Solar Powered Refrigerator | Dr. B. B. Gathitu |
| IDI Moses Odhiambo | ||
| MAKAU M.Fredrick | Optimization of Exhaust Gas Heat: Case Study of Iberafrica Nairobi South Power Plant | Dr. B. B. Gathitu |
| MUMENE Humphrey | ||
| AUKA V. Maureen | Conversion of Electrostatic Precipitator (ESP) to a Combined Jet Pulse and ESP Filter | Mr. H. Ndiritu |
| KARIUKI Samuel C. Ndegwa | ||
| GAKUO Anthony Ndung’u | Design and Fabrication of a Small Scale Steam Boiler for the Waste Oil Burner | Mr. H. Ndiritu |
| MACHARIA Franco M. | ||
| NYAMBANE Onesmus Okemwa | Design and Fabrication of an Interlocking Block Press with Hydraulic Components | Mr. R. M. Mutevu |
| MUNALA Alphayo |
BSC. MECHANICAL ENGINEERING YEAR 5 2010/2011
|
NAME |
PROJECT TITLE |
SUPERVISOR |
| MUEMA F. MADARAKA | Design and Fabrication of a Biomass Powered Cereal Drier: Focus on Maize | Mr. H. J. Onyango |
| MUSAU S. KIMAYU | ||
| MWANGI AUSTIN GACHIENGO | Renewable Energy: A Wind Turbine Generator Model | Dr. B. B. Gathitu |
| ELIUD KOOME | ||
| AONGO W. OTIENO | Redesign and Manufacture of Pico Hydro Turbine | Prof. S. M. Maranga |
| KIRUI K. EDWARD | ||
| EVANS CHARLES | Design, Fabrication and Assembly of a Single Axis Solar Tracking System | Mr. O. M. Muvengei |
| WANYONYI M. JOSEPH | ||
| KINUTHIA SOLOMON MUNGAI | Improving of Locally Mined Bentonite for use as a Drilling Mud for Well Drilling | Mr. P. M. Weramwanja |
| NGUGI JOHN MBURU | ||
| MURIITHI M. WAWERU | Design and Fabrication of a Solar Powered Waste Oil Burner | Dr. B. B. Gathitu |
| IRUNGU N. FREDRICK | ||
| KIHARA K. JORAM | Design and Fabrication of a Spade Making Press Machine | Mr. R. M. Mutevu & Mr. G. Kyove |
| NG’ANG’A EUTYCUS KIONGO | ||
| MBUGUA E. KARANJA | Design of an Automatic Bottle Capping Machine | Mr. J. K. Kimotho |
| OGUNDA O. ALLAN | ||
| KIBIWOTT K. DAYNICIOUS | Determination of the Performance Characteristic of the JKUAT Plant Mill | Eng. B. K. Kariuki & Eng. Nduati |
| KIPTOO C. PHILIP | ||
| KIPRONO BETT HOWARD | Design and Fabrication of a Molding Machine | Prof. S. M. Maranga |
| THUO JOSEPH MBURU | ||
| NYAMBANE NAHASHON | Design and Fabrication of a Coconut Shell Crusher to produce Chips for manufacture of Particle Boards | Mr. C. A. Adenya |
| NYARIKI O. WYCLIFFE | ||
| ANDOLO GRACE VIHENDA | Lubrication Optimization: A Case Study of Bamburi Cement Limited | Dr. B. B. Gathitu & Eng. S. Wachira |
| KAARIA F. MWENDWA | Design and Fabrication of Cross Flow Turbine: For Mini-Hydro Schemes | Prof. S. M. Maranga |
| MOYWAYWA A. BEN | Redesign, Fabrication and Testing of a Soya Milk Processing Machine | Mr. J. K. Kimotho |
| OLOO C. OCHIENG | ||
| MAVU L. MWAINGO | Design of an Interlocking-Block Press | Mr. R. M. Mutevu & Mr. G. Kyove |
| ORINDA A. TOLBERT | ||
| BAKARI A. HASSAN | Design and Fabrication of an Involuntary Flush Toilet Model | Mr. J. K. Kimotho |
| MWANYIRO J. KASSIM | ||
| MWEBIA G. MWIRIGI | Re-Design and Fabrication of a High Speed Manually Operated Drilling Machine | Mr. R. M. Mutevu |
| RUCHAGO J. KAIRUTHI |
BSC. MECHANICAL ENGINEERING YEAR 5 2009/2010
|
NAME |
PROJECT TITLE |
SUPERVISOR |
| KASAON Stephanie Jepng’etich | Uses of Geothermal Waste Heat |
Mr. E. Kipyego |
| WANDIBBA John Macharia | ||
| OKETCH Obara Peter | Design and Manufacture of Pico-Hydro Turbines. |
Prof. Maranga |
| MWANGI Gideon Gichuhi | ||
| MURAYA Beth Wanjiru | Wind Energy as an Alternative Energy Source and its Application |
Dr. K. Kibicho |
| NYANGWARIA M. Cheruto | ||
| OTIENO Bernard Okoth | Design and Fabrication of a Biofuel Steam Engine |
Dr. K. Kibicho |
| NDIVA Joseph Mungai | ||
| MBUTHIA Boniface Gakumo | Testing the Diesel Engines for Compatibility with Biofuels and Soot Density. |
Dr. S.Wanjii |
| MAINA George Kinyua | ||
| DIO Mdzomba Dzombo | Design and Fabrication of a Biogas Lamp. |
Dr. S.Wanjii |
| BARAWA Maurice Mwanjenje | ||
| MWANGI Isaac Nderitu | Design and fabrication of an axial flow irrigation pump. |
Mr. G. Kyove |
| KANGOGO Timothy Kiptanui | ||
| NDUNE Khalfan Mbaya | Design and Fabrication of Hydraulic ram pump for use in improved pumped storage hydro-power station. |
Mr. M. Muvengei |
| BOSIRE Duke Kimaiga | ||
| WACHIRA Charles Kirungui | Design and Fabrication of a Soya Milk Processing Machine. |
Mr. K. Kimotho |
| MUNYALO Muthoka Jotham | ||
| KARIUKI Dickson Mburu | Automatic Gate Operable by Mobile Phone. |
Dr. K. Kibicho |
| OKATCH Obuya Henry | ||
| ASARIA Ongesa Onsoti | Design and Fabrication of an Economical Stone Crusher. |
Dr. K. Kibicho |
| OBWOGI O Enock | ||
| KIBII K Daniel | Improvement of Wire Drawing Machine |
Prof. Maranga |
| OUMA Eddy | ||
| OTIENO Ignatius Ochanjo | An investigation of Tool Geometry on Cutting Forces when Using Negative Tool Rake |
Mr. H. Juma |
| Sang K. Duncan | ||
| BETT Kiprono Alvins | Quality Control in Casting Operation of Recycled Aluminium Alloy |
Prof. Maranga |
| KILAKA Wilfred Mutuku | ||
| OTIENO Amos Onyango | Casting of Identified Components for Food Machinery: Tomato Processing |
Prof. Maranga |
| GICHUHI Lenny Njenga | ||
| KHIBALI Linda | A Stove for Processing Identified Raw Coal to Produce Coke and Coal Dust (II). |
Prof. Maranga |
| ALUNDA O Bernard |
BSC. MECHANICAL ENGINEERING YEAR 5 2008/2009
| NAME | PROJECT TITLE |
| Mathew Ndeto | Mini hydro power plant |
| Christopher Odhiambo Onyango | Fluidized bed combustion of biomass fuel |
| Willy Kirgat | Processing of raw coal to get coke and other useful products |
| Andimu Christopher Otanga | Design of juice extractor |
| Alfred Biketi Simiyu | Combustion properties of biodiesel |
| Derek Mutungi | Algae as a source biofuel |
| Gatheru Sammy Nyiri | Traditional metal working |
| Amisi Jared | Development of a gas cooker burner |
| Okong’o Collins | Velocity profile in the wake of an aerofoil |
| Mutua James | Energy audit for East African Breweries Ltd, Nairobi |
| Bernard Kosgey | Effects of additives on the fatigue and impact properties of recycled aluminium alloy |
| Munyao Musango | Design and fabrication of a briquette making machine |
| Sarah W. Ngure | Design of Biogas Plant for Large scale application |
| Ngetich Bernard | Magnetic fuel saver |
| Otieno Odhiambo | Plastic Molding machine |
| Charles Okoth | Improvement of wire drawing machine and analysis of wire drawing process |
| Luka Mbugua Mbau | Crushing of the kernel of oil seeds |
| Samuel Ngugi | Design and fabrication of a peanut roasting machine |
| Kenneth Kariuki | Mini hydro power plant |
| Arnel K. Ndiwa | Fluidized bed combustion of biomass fuel |
| Munyerere I. Fedha | Processing of raw coal to get coke and other useful products |
| Cyrus Gitonga | Design of juice extractor |
| Hezekiah Odhiambo Ayieke | Combustion properties of biodiesel |
| Paul W. Imbo | Algae as a source biofuel |
| Sikuku Misiko | Traditional metal working |
| Binyenya Authur | Development of a gas cooker burner |
| Okong’o Collins | Velocity profile in the wake of an aerofoil |
| Shikuku Simon | Energy audit for East African Breweries Ltd, Nairobi |
| Abraham Khaemba | Effects of additives on the fatigue and impact properties of recycled aluminium alloy |
| Mise Evans | Design and fabrication of a briquette making machine |
| Kevin Mbundu | Design of Biogas Plant for Large scale application |
| Odhiambo J. Hezekiah | Magnetic fuel saver |
| Jennifer Asigwa | Plastic Molding machine |
| Onesmus Kipngetich | Improvement of wire drawing machine and analysis of wire drawing process |
| Calvince Otieno | Crushing of the kernel of oil seeds |
| Michael Wanja | Design and fabrication of a peanut roasting machine |