Design And Evaluation Of Solar Maize Grain Dryer With A Back-up Heater

A solar dryer integrated with a simple biomass burner was designed and constructed with locally available materials to dry maize. The dryer was composed of solar collector, drying chamber, back-up heater and airflow system all integrated together. The back-up heater provided alternative heating during cloudy weather conditions or at night when solar radiations were low. The dryer was designed based on climatic conditions of Mau summit located in Nakuru County, Kenya.

Maize yield in relation to rainfall and solar energy in Kenya

An attempt has been made to relate maize yield to rainfall during 3 growth periods of the plant and to try to expIain the difference in maize yield between different places on the basis of radiation regime. In the yield/rainfall analysis, rainfall totals in the following periods Here used; sowing to tasselling, tasselling to flowering and flowering to maturity. Rainfall totals in each period were taken as independent variables.

Effect of solar disinfestation and purdue improved crop storage bagging in the control of Prostephanus Truncatus horn in Maize

The Larger Grain Borer, Prostephanus truncatus Hom (Coleoptera: Bostrichidae), is a serious , pest of farm stored maize. Postharvest maize insect infestation is a major constraint to food security, food safety and income generation in Sub-Saharan Africa because of significant yield losses and grain quality degradation. P. truncatus infestation has been reported to cause 35% weight loss in maize during storage. This insect pest is mostly controlled by use of pesticides however; this results in environmental and food safety concerns.

Design and Evaluation of Solar Grain Dryer with a Back-up Heater

The aim of the study was to design and construct a solar grain dryer integrated with a simple biomass burner using locally available materials. This was to address the limitations of the natural sun drying for example drying exposure, liability to pests and rodents, over - dependence on sun and escalated cost of mechanical dryers. This became beneficial especially in reducing po st - harvest losses as well as helping in the preservation of agricultural product. The dryer is composed of solar collector, drying chamber, back - up heater and airflow system.

Solar dehydration of cassava for production of flour for local foods in Kenya

Kenyans subsist for the most part on maize and wheat-based foods. The rapid population increase, however, has not been paralleled by a corresponding increase in maize production and has increased the need for wheat imports. This situation has led to the consideration, on a national basis, of the use of composite flours as potential alternatives to expanded maize production and increased wheat importation. This paper reports on the attempts to produce cassava flour for combining with maize meal in ugali, sorghum and millet flours in uji, and wheat flour in mandazis.

The potential for solar energy utilisation in the kenyan food processing industry: With particular reference to suitable food materials and processes; climatic limitations and processes involving solar waterheating

The potential for solar energy utilisation in the kenyan food processing industry: With particular reference to suitable food materials and processes; climatic limitations and processes involving solar waterheating

Assessment of the Traditional and Improved Processing Methods in the Reduction of Aflatoxin Levels in Maize and Maize Products

Aflatoxins are fungal secondary metabolites produced predominantly by certain strains of the Aspergillus molds that if ingested in acute or chronic toxicity and a variety of other adverse effects on both humans and animals.

A comparative analysis of costs and benefits of Jatropha, maize and orange production in Kenya: case of contracted farmers in Shimba Hills

Energy demand and supply imbalances are a major challenge to development in Sub Saharan African countries. Reliance on petroleum as well as biomass energy sources is both uneconomical and unsustainable. These call for exploration of other sustainable energy sources such as biofuel, solar and wind energies to supplement the existing sources. Biofuels have been identified as potential and most economical sources of alternative fuel with tropical countries having a comparative advantage in cultivating them.

Light availability within an innovative maize-legume intercropping system in Western Kenya

An experiment was conducted in western Kenya to characterize the penetration of solar radiation into the canopy of different maize-bean intercropping systems. The conventional system consisted of alternating 37.5 cm rows of maize and beans. A staggered system contained the same plant population but was planted as paired maize and bean rows. Rows were oriented either east-west or north-south. The experiment was arranged as a 2 x 2 factorial in a Completely Randomized design. All treatments received 31 kg N and 20 kg P ha-1 as mineral fertilizer.

Solar refrigeration for Kenyan rural Communities

Availability of wholesome food products insufficient quantities is a prerequisite for a healthy, productive human population. Refrigeration of perishable foods isoneway of achieving this end. The use of solar powered refrigerators would enhance food preservation in Kenyan remote rural areas where conventional refrigerators either cannot be used or are too expensive. The state-of-the-art of solar refrigeration is reviewed.

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