Methodology for comparing the energy efficiency of methods for regulating the performance of a blower station

A methodology for comparing the energy efficiency of different methods of regulating the total productivity of a blower station is presented. The basic principles of electrical modeling of duct networks are shown for the mathematical description of their properties and characteristics. The results of a comparison of the energy efficiency of regulating methods for a single fan and a group of five fans operating on a common line are presented. The conclusion about the high energy efficiency of the combination of start-stop control with smooth control using axial guide vanes for a blowing station of five fans is obtained.

Investigation on Design and Device Modeling of High Performance CH3NH3PbI3-xClx Perovskite Solar Cells

Perovskite solar cells fabricated with inexpensive and simple technology exhibits high efficiency has witnessed worldwide boom in research. The optimization of solar cell can be done through modeling and simulation. The optical and electrical modeling are the ways to optimize different parameter such as thickness, defect density, doping density and material selection for fabricating stable and highly efficient perovskite solar cells. In this research work, electrical modeling of solar cell is done throughSolar Cell Capacitance Simulator(SCAPS-1D).The architecture of the solar cell is n-i-p device structure. CH3NH3PbI3-xClx acts as light absorber active layer, TiO2 as electron transport layer and Spiro-OMeTADas hole transport layer with device structure FTO/ TiO2/ CH3NH3PbI3-xClx/ Spiro-OMeTAD/Au. The open circuit voltage Voc, short circuit current density Isc, fill factor and power conversion efficiency are 1.28 V, 21.63 mA/cm2, 0.78 and 21.53% respectively. The result showed that the optimize parameter can be applied for fabrication of the solar cell experimentally. Various metal contact materials of the anodeare also studied and analyzed.