Solar Compass最新文献

The results of an innovative membrane distillation system paired with an efficient and robust solar water collector that provides drinking water with high quality and a low rejection rate, independent of the salinity of the water source, are presented in this study. We then optimized and characterized the direct contact membrane distillation (DCMD) experiment in a pilot plant. For the experimental tests, brackish water was used for the experimental tests, which had a salinity varying from 1 g to 20 g/l of salt. The results showed that the permeate flux increased as the temperature and feed rate increased. To evaluate the experimental and numerical records of the mathematical model of the membrane distillation unit an instance of the validation system that has been provided to evaluate the credibility of the received numerical version of the membrane distillation unit, a PC simulation software primarily based totally on the worldwide version of the unit is simulated via C++ software program to clear up the version of sun irradiation and all temperatures at the magazine productiveness of the membrane distillation unit. It was proven by means of this study that the worldwide mathematical model of the unit is capable of predicting, as it should, the tendencies of the thermal function of the membrane distillation unit.

A Ring Array Concentrator - RAC was conceived, realized and tested for cooking purpose in Burkina Faso where irradiation flux is about 5.5kWh/m${}^2$/day. The RAC, having a useful aperture area of 1.692 m${}^2$, was built with five (5) imbricated conical concentrators. The conceived RAC has a mean geometric concentration ratio evaluated to 38, allowing a transmitted temperature of 330${}^{\circ }$C to the receiver’s fluid, supposing a possible cooking time of 6 hours and with a theoretical efficiency from 36% to 40%. This is therefore suitable for cooking, frying and roasting. Water was boiled from October 13th to 15th, 2021 and frying oil was raised up to 132${}^{\circ }$C in October 21st and 22nd, 2022. One (1) kg of potatoes was fried and another kg of meat brochettes were roasted for experimental purpose, supporting the fact that RAC systems could be used efficiently to cook in Burkina Faso, a Sub Saharan country. The weak points of the system, such as the sharp decrease of the mean geometric concentration ratio compared to parabolic RAC and the fact that sun rays come from above, could even be improved by the multiplication of the cones and the channeling of the sun rays by multiple reflections. The RAC could therefore be implemented as a clean cooking technology in an area where abusive wood and Charcoal cooking is still widely in place in suburban areas.

This paper focuses on the short-term forecasting of the temporal variation in the net output of photovoltaic power generation across a wide area. Due to the unstable output fluctuations of photovoltaic power generation, thermal power generation is necessary. However, to handle unpredictable power fluctuations, thermal power often operates in a no-load standby mode, resulting in wasteful energy consumption. To address this issue, we have developed a novel prediction method that utilizes neural networks for short-term forecasting of the net output of photovoltaic power generation in a wide area. The key aspect of this method is the utilization of the distributed solar power generation itself as a sensor within the target area, enabling the use of BIG DATA derived from the sensor to predict future net output of solar power generation using a neural network. To expedite calculations, we have incorporated an autoencoder and a decoder. We applied this methodology to northern Kyushu and conducted thorough verification. Furthermore, we compared the persistent model with the smart persistent model and demonstrated their effectiveness as viable solutions.

Around 300,000 women around the world die every year due to complications during pregnancy and childbirth. An estimated 19.9 million children do not receive critical vaccinations putting them at serious risk of potentially fatal diseases. These risks and deaths are preventable with appropriate management and care. Access to healthcare in low resource settings requires a comprehensive approach that strengthens infrastructure, systems, and medical and human resources. The lack of access to energy within infrastructure strengthening dramatically contributes to the immense healthcare challenge faced by developing countries. Electricity is essential for access to health services, as essential as the healthcare center, human resources, equipment, medicines etc. Universal Health Coverage cannot be achieved without energy access in healthcare facilities.

Healthcare today, without counting the potential services to the un-catered populations in the world, contributes to GHG emissions, equivalent to the 5th most polluting country in the world. Furthermore, if we must meet the goals of access to health today, it cannot be considered via traditional models of electrification, keeping both the health of the people andthe planetary boundaries in mind. Clean energy and particularly solar energy, if planned and deployed in a manner that is decentralized, need-based along with accounting for local capacities and conditions for sustenance - can become a ‘silver bullet’ in catalyzing healthcare access to under-resourced settings. Given low-resource settings and last mile healthcare requirements this article only takes into consideration off-grid solar systems, which could be one of the primary ways for health centers to become resilient and contribute to climate mitigation, irrespective of prevailing grid and on-grid conditions.

With multiple similar programs for solar powering public health facilities over the past decade there are learnings that emerge from across the globe. One of the key learnings is the need for a system thinking lens while deploying decentralized solar for health programs that sustain from a long-term perspective. Systems thinking is an approach that enables one to consider the health system as a whole, while designing demand driven solar powering programs for driving access to healthcare goals. This can be done by breaking down all aspects of solar powering and ensuring that within each aspect, the need is well-understood, the key stakeholders and their priorities are considered and capacities and relationships are accounted for. Moreover, systems are put in place for customization, expansion, and maintenance over time. The suggestions and examples provided below prioritize healthcare needs while driving enabling conditions for design and sustenance of solar for meeting current and future healthcare challenges. While healthcare systems require multiple levels of both curative and preventative healthcare, the consideration