Thermodynamic and economic comparison of photovoltaic electricity generation with and without self-cleaning photovoltaic panels

a comparison of teachers and supervisors, with respect to teacher efficacy and reflection

supervisors play an undeniable role in training teachers, before starting their professional experience by preparing them, at the initial years of their teaching by checking their work within the proper framework, and later on during their teaching by assessing their progress. but surprisingly, exploring their attributes, professional demands, and qualifications has remained a neglected theme i...

Parameters Affecting Electricity Generation by a Photovoltaic Direct Current Micro-grid Connected to Electricity Network

Paying attention to the increasing concerns of global warming, environmental crisis and energy, International research and Development has extended to sustainable energy systems.In this research,Applied method for optimizing the installation space of photovoltaic system Due to the limited space in the buildings of the country's cities, As the effect of the shadow on the efficiency of the panel,...

Measured Performance of Building Integrated Photovoltaic Panels

Modelling an Emulator of Photovoltaic Panels

Photovoltaic emulators (PVE) are power electronic systems able to reproduce the output "CurrentVoltage" characteristics of photovoltaic panels in various operating conditions. They are indispensable for the design and evaluation of the operational components of a photovoltaic energy system, such as battery chargers and Maximum Power Point Tracking (MPPT). Those emulators prevent the experimenta...

An electronic load for testing photovoltaic panels

The characteristics of photovoltaic (PV) panels in the field conditions are to be obtained using a fast varying load. The paper presents a simple electronic load for testing a set of PV panels using linear metal oxide field effect transistors (MOSFETs). The proposed test set up gives the current versus voltage and power versus voltage characteristics of PV panels by quickly scanning the load. D...

the relationship of wtc with communication apprehension and self-perceived communication competene in english and persian context

بیشتر تحقیقات پیشین در زمینه تمایل به برقراری ارتباط به رابطه آن با عوامل فردی چون سن، جنس، نوع شخصیت و... صورت گرفته است. در صورتی که مطالعات کمتری به بررسی رابطه تمایل به برقراری ارتباط زبان آموزان فارسی زبان با ترس از برقراری ارتباط و توانش خود ادراکانه آنها در برقراری ارتباط در محیط فارسی و انگلیسی انجام شده است. بر اساس نظریه الیس (2008) تمایل به برقراری ارتباط جایگاه مهمی در زمینه آموزش م...