Geostationary satellites offer the possibility of producing high-frequency time series irradiance datasets, covering a large geographical area. Here, we derive half-hourly global irradiance (GHI) at 4 km spatial resolution from visible channel radiance of INSAT-3D satellite using a semi-empirical model and validate it against 19 ground stations over 2015–16, across India. Our model uses the Advanced

The urgent need to decarbonise energy supplies has prompted exponential growth of solar photovoltaic (PV) systems across the world. As the penetration of renewable energy sources increases, the need to accurately forecast electricity output heightens to ensure efficient energy system operation. While exposure to high temperatures and moisture are known to significantly reduce PV panel efficiency, the

Controlling solar spectra via the careful design could realize the optimized utilization of energy. Especially for spectrally selective solar absorbers, achieving the appropriate transition wavelength can boom conversion efficiency for a certain application under the consideration of cost. Here, we experimentally demonstrated a kind of WTa-SiO2 cermet based absorbers with transition wavelength of around

Thermal storage system with flat plate solar collector is performed in Faculty of Engineering, Menoufia University, Shebin El-Kom, Egypt, at Latitude of 30.56° N and Longitude of 31.01° E. The thermal storage system consists of insulated water tank, recirculation pump and flat plate solar collector to collect the solar energy and store it as a sensible energy. The measurements have been conducted from

The application of greenhouse technologies is rapidly expanding in China and other regions of the world with the continental climate. Such technologies are characterized by a considerable consumption of fossil fuels, especially in winter periods. Various renewable energy technologies are used to reduce the energy demand in greenhouses, including solar heating. Simpler designs of water or air solar

Concentrating Photovoltaic technology is a promising option in power generation using the photovoltaics compared to the conventional flat PV system. This study investigates the performance of a high concentrated photovoltaic single solar cell module attached to a multi-layered microchannel heat sink. The system has been tested the first time experimentally both at indoor and outdoor conditions. The

It is an important strategy to improve the performance of polymer solar cells (PSCs) by incorporating metal nanoparticles into functional layers. Herein, gold (Au)@titanium dioxide (TiO2) plasmonic core-shell nanoparticles (PCSNPs) are synthesized and doped into zinc oxide (ZnO) as hybrid electron transport layer in PSCs. Improved light trapping and electrical conductivity are achieved through localized

Solar pond utilizes a salinity gradient to trap thermal energy in the storage zone. The stored heat can be employed for several potential applications. A transient analysis is carried out to investigate the effect of various parameters such as variation of the thickness of zones, ground conditions, and surface losses on the temperature development of solar pond. The numerical model is validated with

Most historical sites in archaeological museums have an inorganic origin. According to the specifications prescribed in CIE 157: 2004, these inorganic collections are light-insensitive and can be preserved in an environment without any light restrictions. Roof skylights are therefore widely used in archaeological museums in China to provide natural lighting and reduce lighting energy consumption. However

This paper investigated the energy performance of window attachments and analyzed the impact of window attachments’ parameters on air conditioning energy consumption of residential buildings in a cooling-dominated city (Houston) and a heating-dominated city (Minneapolis). Roller and cellular shades were selected as research objects in this study. Nine parameters related to window attachment energy

Photovoltaic (PV) air conditioning (AC) is an effective way to solve the problems of energy consumption of office buildings. In this study, a set of parameters were designed for PV AC, including PV capacity, AC parameter, and inverter parameter. Then, the parameters were applied to a 20-m2 office building, and a PV AC system test platform was built. The test lasted for one year; the corresponding data

Perylene diimide derivatives (PDIs) are a kind of very promising non-fullerene electron transport material for organic-inorganic perovskite solar cells (PerSCs), owing to their excellent photoelectric properties and low-cost synthesis. However, their tendency to form aggregates strongly influences the film morphology and transport properties. Herein, we provided a simple way to tune the morphology

Free water contained in porous structure of food plays a fundamental role in proliferation of microorganisms and bacteria that can damage the product materials. This work presents a thermo-kinetic study carried out in a natural and forced convection solar dryer; the objective was to establish the optimal conditions for drying and storing Herniaria hirsuta by testing the impact of different aerothermal

Currently, thermochemical energy storage (TCES) offers the opportunity to relieve the enormous gap of energy demand and supply in the solar energy field. This method has its specific requirements, such as high energy storage density, good thermal stability, high reaction enthalpy, high heat capacity and switched temperature range of thermochemical storage material (TCM) for low to medium temperature

In this article, we describe the structure, the functioning, and the tests of parabolic trough solar thermal cooker (PSTC). This oven is designed to meet the needs of rural residents, including Urban, which requires stable cooking temperatures above 200 °C. The cooking by this cooker is based on the concentration of the sun's rays on a glass vacuum tube and heating of the oil circulate in a big tube

A transient CFD model is developed to investigate the parameters affecting the productivity of a solar still. Instantaneous weather data is accounted as boundary conditions while the absorption of solar irradiance, as well as radiative heat transfer is considered by DO equation. Evaporation and condensation rates are evaluated by solving species transport equation for water vapor and application of

Combined cycle concentrating solar power (CSP) plants provide significant potential to achieve an efficiency increase and an electricity cost reduction compared to current single-cycle plants. A combined cycle CSP system requires a receiver technology capable of effectively transferring heat from concentrated solar irradiation to a pressurized air stream in a gas turbine. The novel spiky central receiver

Thermal energy storage is a key component for power supply based on concentrating solar power. A promising thermochemical storage material in terms of cost-efficiency, storage density and reaction temperatures is based on the chemical reaction of calcium oxide with water. Handling of the solid materials, however, has proven to be difficult due to their powdery state particularly in dynamic storage

In this study, a numerical simulation has been accomplished to investigate the performance of a photovoltaic thermal system (PVT) with respect to the energy consumption of fluid circulating. Three dimensional numerical models of the PVT system were conducted in ANSYS Fluent software using water-CNT nanofluid as working fluid. Three configurations of heat collectors were modeled to select the more efficient

The crystalline silicon solar module operates in an outdoor environment and exposed to radiation, ambient temperature and humidity. This paper focuses on the performance and lifetime improvement of the generic commercial single-layered Si3N4 coated multi-crystalline silicon solar cell with the addition of selective radiative antireflective coating (SR-ARC). We presented a common approach to radiatively

Mixed chalcogenide CZTSSe with earth abundant elements, inexpensive, environmental-friendly and impressive photovoltaic performance is a promising absorber material for kesterite thin film solar cells of third generation. In this work, a numerical simulation of p-CZTSSe/n-CdS heterojunction solar cells have been presented using one dimensional Solar Capacitance Simulator. The influence of composition

Energy-saving has been a central point considered in green architectural designs and researches for decades. However, in the majority of previous studies, the variables in energy-efficient building designs were treated separately by using bivariate-orthogonal methods, and the effects of multivariable interactions were largely neglected. This study focused on the impact and relationships of multiple

In present energy conservation design, air-conditioning operation is deemed to be continuous in the whole building, but the intermittent operation of air-conditioning is widely applied due to the occupant’s behaviour. The large discrepancy in the energy efficiency and energy consumption can cause between the actual usage and the primary design. Considering this situation, a numerical simulation was

A methodology for in-situ measurements of radiative reflection and emission losses from a solar thermal receiver under high-flux irradiation is demonstrated. It combines radiosity analysis with photogrammetry and image recognition techniques to obtain directional and spatial radiosity distributions over receiver surfaces with a simple setup, mainly consisting of a camera. A CCD camera can acquire the

In real engineering of solar thermal applications, it needs considerable effort to determine the incidence angle modifier (IAM) of flat plate solar collectors, according to the test standards (BS EN ISO 9806, 2017; ASHRAE 93-2010, 2014). And the available method in the test standards is usually inapplicable to measure thermal performance of installed solar collectors with dust deposition effect in

Gas-phase solar receivers can operate over a wider temperature range than receivers which use conventional liquid heat transfer media. However, due to their relatively poor heat transfer performance, gas-phase receivers require substantially more heat transfer area and/or higher flow rates to extract the same amount of heat which leads to more complicated designs (e.g. a porous-media absorber with

The main objective of this paper is to design, calibrate and make functional a horizontal test bench used to carry out the experimental simulation of solar reflectors erosion induced by sand particles. The developed equipment provides the possibility to control the air speed, the impact angle between the fluid flow and the target surface as well as the mass rate of the ejected particles. The originality

Bees not only produce honey but also provide the main pollination for most crops, while long maturation cycle, low yield of honey and even mass death of bees are observed in traditional hives due to the unfriendly internal thermal condition. In the present paper, a new beehive system integrated with solar thermal/PV system was introduced to optimize the internal thermal condition of the beehive and

The present work documents the synthesis of a new and highly energetic indandione based D-π-A planar molecule, 2-(5″-hexyl-[2,2′:5′2″ terthiophen]-5-yl) methylene)-1H- indene-1,3(2H) dione, H3T-ID), as donor material for bulk-heterojunction organic solar cells (BJH-OSCs). The photophysical properties, optoelectrical characterization and microscopic images were thoroughly studied. H3T-ID exhibited good

The hierarchical micro-/nanotextures adorning the petal surfaces of certain flower species exhibit outstanding sunlight harvesting properties, which can be exploited for photovoltaic (PV) applications via a direct replication approach into polymeric cover layers. This route has been so far hampered by the restricted size of the original bio-template and by the limited number of replication cycles when

High-accuracy solar radiation data are needed in almost every solar energy project for bankability. Time series of solar irradiance components that spans decades can be supplied by satellite-derived irradiance or by reanalysis models, with very various types of uncertainty associated to the specific approaches taken and quality of boundary conditions information. In order to improve the reliability

The detection and segmentation of clouds in images taken by ground based cameras is of utmost importance for a large number of applications including all-sky imager based nowcasting systems which optimize solar power plant operation, calculation of the global irradiance, estimation of the cloud base height and support of optical satellite downlink operations. Many approaches to segment clouds in camera

One of the main limitations concerning the implementation of heat transfer fluids in Concentrated Solar Power (CSP) plants, are their compatibility with the construction material. Hence, the study of this interaction over cycles is crucial for a proper material selection and life span forecast. In this work, the chemical compatibility of four commonly used metals in CSP plants; low carbon steel-A1045

Two types of solar air collectors (SACs), namely, a conventional-tube collector (C-TC) and a transparent-tube collector (T-TC), are designed on the basis of flat micro-heat pipe arrays (FMHPA) and are compared. FMHPA is used as the core heat transfer element for both collectors. Absorption coatings are located at different places. It is located at, namely, on the inner wall of vacuum tube and on the

Solar radiation is a variable energy source and the mismatch between the availability of such source and the domestic energy demand is a paramount challenge to deal with. For this reason, in this work a 4.08 concentration ratio portable solar box cooker coupled with a thermal energy storage (TES) based on a phase change material (PCM) was characterized through outdoor experimental tests. The TES is

Recently, architectural designs with dynamic facades have been introduced as a strategy for improving building environmental performance. Currently, such as those capable of rotation and folding motion, are widely used. An investigation of the effect of these two motions on the energy and daylight performance can contribute to enhanced energy efficiency and occupant comfort. Therefore, a parametric

The potassium formate (KCOOH) solution is regarded as a promising alternative for the widely used salt solution in liquid desiccant dehumidification. However, few studies have been conducted to investigate the regeneration characteristics of KCOOH solution. In the present study, it firstly measured the vapor pressure of KCOOH solution with different temperature and concentration. Then the corrosion

Various structures were fabricated through a copper-assisted chemical etching method for texturization of monocrystalline silicon solar cells, including nanopore, inverted pyramid, V-groove, upright pyramid and hybrid structures. Structural characteristics, etching processes and anti-reflection abilities of the textured structures were systematically analyzed. Brand new texturization results were observed

The temperature dependence (in range from 24 to 290 K) of Raman spectroscopy of the Cu2ZnSnSe4 (CZTSe) films with Zn-rich (series A) and Zn-poor (series B) composition obtained on a Ta foil is investigated. Analisys and approximation by the Lorentz function of the CZTSe Raman spectra suggests that the CZTSe most intense Raman peak consists of two modes (at 192/189 and 194/195 cm−1), which are slightly

In the present work, Cu2ZnSnS4 (known as kesterite) nanoparticles were synthesized by two-phase method. X-ray diffraction measurement confirmed formation of kesterite crystalline phase. Size of nanoparticles in colloidal suspension was determined by dynamic light scattering method and it was 9.2 ± 2.5 nm. The obtained nanoparticles were used as inorganic hole-transporting material (HTM) in paintable

The hole-transport-material (HTM) free perovskite solar cells (PSCs) have drawn great attentions due to the simple structure, low fabrication cost and long term stability. However, the photoelectric conversion efficiency (PCE) of the HTM-free PCSs are still low comparing with the traditional sandwich type PSCs. In this work, a new HTM-free PSC is proposed with CH3NH3PbI3/CsSnI3 all-perovskite heterojunction

Low bandgap lead-tin (Pb-Sn) hybrid perovskite solar cells (PVSCs) have gained a great deal of attentions due to their wide optical absorption range and environmental friendliness. Poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) is widely used as a hole transport layer for PVSCs. However, the metallic property of PEDOT:PSS causes a barrier at the interface between it and the active