Abstract Adding solar energy utilization equipment to an integrated system (IES) can improve the rate of renewable and reduce cost. The optimal operation strategy IES with photovoltaic thermal (PV-SH-IES) is investigated. efficiency variation CHP considered, results are compared analyzed. show that: IES, cost PV-SH-IES lower; it first falls then rises increment area ratio, ratio has value. impa...

Introduction: The lunar surface is covered with a thick layer of micron/sub-micron size dust grains formed by meteoritic impact over billions of years. The fine dust grains are levitated and transported on the lunar surface, as indicated by the transient dust clouds observed over the lunar horizon during the Apollo 17 mission [1-5] Theoretical models suggest that the dust grains on the lunar su...

Due to the high dependence of photovoltaic energy efficiency on environmental conditions (temperature, irradiation...), it is quite important to perform some analysis focusing on the characteristics of photovoltaic devices in order to optimize energy production, even for small-scale users. The use of equivalent circuits is the preferred option to analyze solar cells/panels performance. However,...

This paper lays out an approach to develop Space Solar Power, with a small initial investment, a rising market, early revenue generation, and an evolutionary path to full Space-based power generation. The key idea is to use space assets initially for a global power exchange, establish the infrastructure, and then add space-based power as technology advances and revenue flows in. The system deve...

Cost-effective methods are needed to identify the presence and distribution of tritium near radioactive waste disposal and other contaminated sites. The objectives of this study were to (i) develop a simplified sample preparation method for determining tritium contamination in plants and (ii) determine if plant data could be used as an indicator of soil contamination. The method entailed collec...

Daily records of sunspot group areas compiled by the Royal Observatory, Greenwich, from May of 1874 through 1976 indicate a curious history for the penumbral areas of the smaller sunspot groups. On average, the ratio of penumbral area to umbral area in a sunspot group increases from 5 to 6 as the total sunspot group area increases from 100 to 2000 μHem (a μHem is 10−6 the area of a solar hemisp...

Vaccine cold chain equipment (CCE) in developing countries is often exposed to harsh environmental conditions, such as extreme temperatures and humidity, and is subject to many additional challenges, including intermittent power supply, insufficient maintenance capacity, and a scarcity of replacement parts. Together, these challenges lead to high failure rates for refrigerators, potentially dam...

Renewable energy power generation could increase the uncertainties of power system with intermittent and stochastic performance, which has significant effect on Available Transfer Capability (ATC). With the rapid development of renewable energy power generation technology as well as the gradual maturity of power market, it has become essential to research the effect specially. The wind generato...

The development of a unique statistical model for the estimation of the UV index for all sky conditions with solar zenith angles of 60 degrees or less is reported. The model was developed based on available data from an integrated whole-sky automated sky camera and UV spectral irradiance measurement system that was collected every 5 min when the equipment was operational over a period of 1 year...