nowadays, energy plays an important role in the economic and community development of country. consequently, performance analysis of energy systems is one of the effective methods being used to prevent waste of energy resources. among the different power generation technologies, steam power plants make a significant contribution to power generation in iran, with a share of 47 % of electricity g...

during the past few years, modeling in agriculture has attracted considerable attention. new modeling methods including neural networks are employed in various industries, and it is necessary that their use in agriculture be also considered. this research addressed the trend of energy use in broiler farms in alborz province and sought to model the trend of energy consumption and production in t...

In recent years energy efficiency in different levels become of prime importance. Studies have been shown that urban planning can play a critical role in this area. At the same time in oil-producing countries like Iran, energy efficiency has not been considered as a national priority. However, in recent years with increase in the population growth, rapid urbanization and acceleration of environ...

introduction the high energy consumption is one of the serious problems in poultry industry. the poultry industry consume about five percent of total energy sources in different countries, with consideration of losses, it increases up to 16-20%. in the year 2003 also, the iranian chicken meat consumption per capita was 13.3 kg, while in the year 2013 it increased to 25.9 kg (fao, 2014). it show...

objective: the main objective pursued in this paper is to investigate the energy consumption for drying of potato slices using vacuum-infrared drying method. methods: drying of potato slices with the thicknesses of 1, 2 and 3 mm were conducted at vacuum levels of zero (without vacuum), 20, 80 and 140 mm [hg], infrared radiation at power levels of 100, 150 and 200 w in the three repetition. resu...

ABSTRACT- Energy use patterns and the contribution of energy input vary among farming systems. The optimal use of improved farm machinery coupled with the optimal use of other recommended sources permit an increase in paddy yield up to potential levels. In order to determine the effect of production systems on energy use efficiency focusing on mechanization for paddy production in Khuzestan pro...

introduction pistachio (pistacia vera l.) is one of the most important export crops of iran which has an important role in non-petroleum exports and has over $800 million benefit per year. however, production of this crop faces many problems in main production centers, especially in energy efficiency and productivity. the pistachio is a native crop of iran and syria. the major producers of pist...

savojbolagh is the main region of hydroponic greenhouse agriculture in iran and is of the capacity to produce the highest in greenhouse production strawberry. the aims followed in this study were to calculate the energy use pattern and determine the relationship between energy input in greenhouse strawberry production and its yield through a linear programming model as based on data envelopment...

This study employs data envelopment analysis approach to construct the meta-frontier global technical efficiency of energy use index and global technical efficiency of CO2 emission control index to measure the energy use efficiency and CO2 emission control efficiency at country level. Destruction of these efficiency indices into pure technical efficiency and scale efficiency sub-indices is to c...