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Articles by Mirela MILITARU
Total Records ( 4 ) for Mirela MILITARU
  Mihai CHITOIU , Valentin VLADUT , Mirela MILITARU and Iulian VOICEA
  Agricultural waste has a very high potential for the biogas yielding process. Using the waste has its advantages in the fact that it is a pollutant factor for the environment, it helps the sustainible development of the energies reserve and leads to an overall drop in pollution due to low emmissions. Biogas obtained from animal manure and/or agricultural residue can be used by farmers in the purpose of lowering energy costs, in this way they can transform a problem into an opportunity. Through the biogas release process, the feeding material is transformed into a nitrogen rich fertilizer that can be used for the soil, without other interventions, and so the manure (pork and bird droppings, etc.) doesn’t need treatment. In this paper the current state of national and international biogas use, new solutions, optimization methods, alternative materials and future possible opportunities, different results obtained over time.
  Mirela MILITARU , Elena POSTELNICU , Mihai CHITOIU and Valentin VLTDUT
  Solar energy represents one of the future energy sources with a high potential, used as an alternative to conventional methods, especially during summer. The advantages of using solar energy are multiple, this type of energy being virtually endless and free, and its use has no negative effects on the environment, being regarded as a clean energy source. Solar energy has multiple applications in agriculture, one of its benefits being that it is used for dryers as an alternative energy source, especially in regions with a high solar potential. In this paper different types of fruits and vegetable dryers, nationally and abroad are presented, as well as results obtained from different methods of solar dryers.
  Valentin VLADUT , Mihai CHITOIU , Aurel DANCIU , Mirela MILITARU and Carol LEHR
  Renewable energy represents a major interest field in the sustainable development of the energies reserve. Agri-pellets are an efficient version of the average pellet, both in reducing greenhouse gas emissions and in reducing energy costs. Agri-pellets are obtained through mixtures of vegetal and forestry waste, being an alternative to the usual pellets because the material that is used in the process can be easily found, especially in the case of farms. Agricultural and forestry biomass represent the raw material for pellets and agri-pellets processing, a product that is used as an alternative energy source to classic versions (wood). The mixtures humidity is very important because it has a major impact on product quality. Determining the ideal humidity for each type of pellets/agri-pellets is important in order to establish optimal mixtures, this paper presenting research results on determining the humidity influence on pellet and agri-pellet recipes.
  Elena POSTELNICU , Valentin VLADUT , Cristian SORICA and Mirela MILITARU
  Solar radiation represents an inexhaustible and unexploited energy resource in Romania and internationally. At present time, in which the energy issue grows in importance, and environment protection became a society demand, efforts in unconventional energy technologies development (solar, wind, geothermal, etc.). Many sectors rely on sun technology benefit, and so can agriculture. The productivity of these sectors depends on the amount of energy that they gather from the sun. Generally there are two types of solar systems: the ones that convert solar energy into electricity and the others that convert solar energy into heat. Both types have many applications in agriculture, helping the productivity. Photovoltaic panels are very economy efficient regarding electricity distribution for long distance locations, like agricultural exploitations, farms, orchards, and other agricultural operations. The use of solar panels is indicated for agriculture due to easy maintenance. Farmers don’t use only energy from the sun, its heat being also very important in agriculture. Drying cereal and other products through sun exposure is widely used. In this paper solutions of solar radiation use nationally and internationally are presented, different methods adapted for agriculture, as well as results from researches in this field.
 
 
 
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