The low conversion efficiency of solar cells produces large amounts of thermal energy to the cells, and with an increase in the temperature of solar cells, their electrical efficiency decreases. Therefore, a hybrid photovoltaic thermal system improves the overall efficiency of the system by adding thermal equipment to the solar cell and removing excessive heat from these cells. In this paper, w...

smart home is composed of several controllers with different plants in control. if each controller works independently, without considering the mutual effect of the others in the control process, the whole system could definitely not converge to an optimum desired status and may not ever reach the demanded condition. the function of different controller system may has conflict in some condition...

This paper concerns the influence of elastic mounting on the dynamic properties of hydrostatic control system. Digital simulation of the drives with rigid mounting and with elastically mounted load mass was performed in order to adapt their dynamic models to the physical model at the laboratory stand. The influence of parameters of the system, external load and friction on the dynamic propertie...

introduction activated sludge process is one of the most common methods used in wastewater treatment plants. regarding the large volume of sludge obtained from such biological wastewater treatment processes and considerable costs of its treatment and disposal, extensive research has been and is being done on novel effective methods of sludge stabilization. in previous investigations research gr...

SCADA stands for Supervisory Control and Data Acquisition. SCADA system is more porpular than other control system in the modern industrial processes. This research describes the automated switch control for SCADA based electrical distribution system of primary substation by using PLC. The objective of this research is to transform the manual control system to automated switch control system in...

SARNA, S. K., AND E. E. DANIEL. Electrical stimulation of gastric electrical control activity. Am. J. Physiol. 225(l): 125-131. 1973.Gastric electrical control activity in anesthetized dogs was stimulated by voltage pulses of 100 msec duration and lto 25-v amplitude. The gastric control waves could be entrained from any site in the electrically active region on the anterior and posterior sides....

this paper describes a study that starts with an analysis of typical energy demand profiles in a hospital setting followed by a case study of a combined cooling, heating, and power (cchp) generation system.cchp is an autonomous system that combines the generation of electrical, heating, and cooling energy.the driving units are two high-efficiency gas engines that produce electrical and heat ene...

Electrical Drive An electric drive is a system that converts electrical energy into mechanical energy. It also provides electrical control of the whole process through several devices and technologies (Figure 1). The objective is to create a smooth and versatile control to achieve a specifi c speed-torque characteristic. It is a key component of the power conversion chain between power sources ...

the objective of this research was to develop a suitable method for color sorting of fruits. accordingly, a color-sorting system was designed and a prototype developed and then tested. this system includes an optic head which is designed to develop a reflection of the fruit. output of the head is then processed in an electronic control system which generates the appropriate signal for ejection ...