Solar photovoltaic (PV) energy is one of the most widely used renewable options around world. However, its electrical efficiency drops with increasing PV module temperature, it therefore necessary to find appropriate ways improve performance under high temperature conditions. In this study we evaluated impact simultaneous dual surface cooling on module's output experimentally. The rear was cooled using cotton wick mesh which absorbs water from a perforated pipe and use capillary action...

The limited productivity of traditional solar still considers as one the most prominent obstacles to their implementation. Thus, main objective this study is improve (TSS) in two successive stages. In first stage, a rotating hollow cylinder used within increase surface area evaporation and reduce boundary layer thickness untreated water film. Three rotational speeds have been tested (0.5, 1 3 rpm). second stage included integration an external collector with modified (MSS) raise basin...

A photovoltaic (PV) module’s electrical efficiency depends on the operating temperature of cell. Electrical reduces with increasing PV module which is one drawbacks this technology. This due to negative coefficient a decreases its voltage significantly while current increases slightly. study combines both active and passive cooling mechanisms improve output module. heat sink made up aluminum fins an ultrasonic humidifier were used cool panel. The was generate humid environment at rear side...

Abstract This study aims to evaluate the performance of a flat plate solar water heater (SWH) theoretically and experimentally. The thermal SWH was predicted using Fortran 90 programming language. designed as square shape with dimensions 110 cm length, 120 width 10 depth tested by integrating modified distiller increase temperature in basin at constant mass flow rate 1.2 l/min. tests were conducted under weather condition Yekaterinburg city, Russia, from June September 2019, typical day...

Solar water distillation is an effective technology for producing potable using sustainable energy sources. However, the widespread use of this in industrial and domestic applications hindered by low daily production compared to other methods. In study, a new modification was introduced placing hollow cylinder inside solar distiller then integrating cylindrical with heater (modified still). An economic analysis study chemical physical properties modified still (MSS) were carried out. The MSS...

Abstract The concept of employing thermoelectric generators (TEGs) to recover energy from waste heat has gained popularity, with applications that range milliwatt kilowatt levels output power. In this study, a hybrid photovoltaic panel and generator (HPVTEG) system consisting an integrated exchanger, commercial polycrystalline silicon (PV) bismuth telluride TEG was proposed. Here, TE components can be used cool PV modules, increasing their power via the Seebeck effect. main finding is...

In this paper, an experimental investigation study was conducted to show the effect of enhancing evaporation and condensation processes inside a modified solar still by placing ultrasonic humidifiers cotton mesh tent in basin water installing cooling chamber with thermoelectric elements on top still. Various parameters were recorded every hour, such as temperatures at different points within still, weather conditions (e.g., irradiance intensity, ambient air temperature, wind speed), yield...

It is well established that renewable energy resources for electricity generation are free. In hot areas, solar has become one of the major interests researchers and specialists. This paper aims to experimentally investigate maximum voltage a thermoelectric generator (TEG) panel. panel was built from many TEG modules connected in series parallel. The exposed high heat due radiation during summer, either directly or through Fresnel lens. other side cooled using tap water passed aluminum...

велопроБег Спецвыпуск «БН» СодержаНие СОдержАНие Уважаемые коллеги!В 2017 году Белоярская АЭС сделала шаг вперёд.Во-первых, мы вошли в число призёров конкурса «Лучшая России».Во-вторых, числе победителей среди атомных станций области культуры безопасности по экспертной оценке концерна «Росэнергоатом».И, конечно, важный итог: досрочно выполнили годовой план выработки -станция выработала на сегодняшний день более 10 миллиардов кВтч, включая верхний амбициозный уровень.Это стало возможным за...

The low freshwater productivity of a conventional solar still is considered challenge for researchers due to the high temperature glass cover or basin water depth. In current work, newly designed was suggested according climatic conditions Yekaterinburg/Russia, which included an enhanced condensation and evaporation process by spraying thin film on hot absorber plate then passing generated vapor free convection over aluminum (low temperature). distillation system under study tested during...

An experimental investigation of the study for pulsed particle visualization micro tracers using PIV technique was conducted.The purpose to obtain velocity distribution in straight and turns pipeline influence different geometries inserts (swirlers) on cause prеssure grаdient оuter innеr wаlls pаrts.The fluid flow consisting tracer particles determined.In order pattern a design passive devices performed put into experimentation investigate field.The PIV-technique equipment allow analytical...

Abstract Water is the most important source for human being and other living creatures. The naturul sources of water started to decline especially in recent years. Researchers have focused on productivity drinking as one main live requirements. Conversion salt into using solar distillation technology can be considered viable methods dry climate regions. stills effected by various parameters such design, operational environmental parameters. current study aims effect different conditions...

One of the most effective methods solar water desalination without energy exhaustion is use thermal storage materials such as paraffin wax (PCM). These have been approved one acceptable alternatives for supply in distillation plants. (sensible and latent) are used still to store sunshine hours release evening increase production at nighttime. In this study, effect using PCM Cells was investigated experimentally a rectangular-basin with single slope, according Kirkuk city climate Iraq. Two...

Abstract The main objective of the current study is to increase productivity rate conventional solar still by increasing surface area heat transfer in evaporation section within still. Lightweight rotating hollow metal cylinder made galvanized iron layer (0.06 cm thickness and diameter 32 cm) with a length 90 was used as improved single slope tests were carried out for 3 months (Jun, July August) at Ural Federal University Yekaterinburg/Russia, experimental results taken perfect day on 12...

This work investigates the effects of water depth on internal heat transfer coefficients and productivity a solar distiller with single slope in summer season. Three different days were considered three depths 1, 2, 3 cm climatic conditions Iraq. The results illustrate that total inside increase as basin water’s decreases. highest coefficient was 33.37W/\mathrmm2.k, which obtained at around 1:00 pm minimum (1 cm). Furthermore, 1-cm depth, became productive earlier than other two depths. rate...