in this paper, a novel control method for photovoltaic converter connection to the national gridis presented, so in addition to the injection control by solar arrays to the grid, this method cancompensate reactive power and harmonics in the load current. the system will be connected inparallel between the grid and load. the proposed system supplies all load power consumption(including active po...

introduction:                                                                             the erroneous move towards the modern lifestyles has led to uncontrolled population growth, urbanization, disorderly expansion of cities to natural habitats and ecosystems, destruction of traditional rural communities and farm lands, indiscriminate utilization and destruction of natural resources, growth o...

A new method of optimization on linear parabolic solar collectors using exergy analysis is presented. A comprehensive mathematical modeling of thermal and optical performance is simulated and geometrical and thermodynamic parameters were assumed as optimization variables. By applying a derived expression for exergy efficiency, exergy losses were generated and the optimum design and operating co...

Today, increasing energy efficiency in residential heating systems, saving fuel and resources, improving the of using devices based on renewable sources is an urgent issue. The purpose article to develop a mathematical model heat balance conduct theoretical study one-story rural houses use solar non-stationary mode. To achieve this goal, experimental house with autonomous supply was built. main...

In this paper we discuss the support provided by parametric modeling and genetic algorithms to performance oriented design processes; the topic is discussed and exemplified with specific reference to modular wide span roofs. First, the paper introduces the concept of performance oriented design and describes potentials and limits of parametric modeling in supporting the process. Among the poten...

Photovoltaic-thermal (PVT) technology refers to the integration of a photovoltaic (PV) and a conventional solar thermal collector, representing the deep exploitation and utilization of solar energy. In this paper, we evaluate the performance of a solar PVT cogeneration system based on specific building energy demand using theoretical modeling and experimental study. Through calculation and simu...