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The main purpose of this paper is to develop a computer mathematical model which produces estimates of hourly average total solar radiation flux incident on the earth's surface under climate conditions of Delta, Egypt. Predictors for solar radiation have been developed because there is often a lack of representative solar radiation data in most countries. Cloudiness, atmospheric transmissivity, latitude and orientation of the Earth relative to the Sun, time of day, slope and aspect of the surface determine the spatial and temporal distribution of irradiance incident on a surface. Measured data were collected from the Solar-Meteorological stations of Agricultural Engineering Department at El-menoufiya University, El-Mansoura university and Belbees, in order to evaluate the present model. A comparison study between measured and predicted data has been carried out based on the main bias error and correlation coefficient. It can be concluded that the present model can be used to estimate the hourly average total solar radiation for El-menoufiya, El-Mansoura, and Belbees with an excellent agreement

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The biomass oven is designed and fabricated for drying agricultural products. It agrees with Amico Foods Factory, Polin Production Line and El Shamidan Factory, Mandomix and Toinile Production Line. But unlike that, it works with agricultural waste. Hot air is purified with chemical materials in order not to affect the products which are dried with emission. This study has direct objective whose is disposal of agricultural waste, which is a burden on the farmer. Also make a profit from the sale of agricultural dry product with a high quality. Indirect objective is saving electricity consumed from thermal and microwave ovens which are used in drying and cooking. The most consumed ovens for energy which are used production lines of factories. This design can be generalized. It can be developed for production lines of drying which is worked with cheap energy in drying factories. And this design was also used baking breads and cakes. This development of oven to work in baking and settlement requires some modifications in oven to raise the heating efficiency in drying chamber. Recommended results:-› Biomass oven is used to get ride with safety method. › Biomass oven is used for drying agricultural products when using a quantity of agricultural waste 25% with drying chamber volume which given a high the temperature increase. › The using biomass oven is recommended to dry sliced onions with 6 mm thickness with two layers which given the highest quality and net profit. › INT recommended with using biomass energy to achieve the highest profit for agricultural waste.