ABSTRACT
After the COVID-19 pandemic has spread throughout the world, many research institutions and industrial organizations are putting great efforts into producing environmentally friendly solutions for the transportation sector. This paper presents a newly developed combined solid oxide fuel cell system with a turbofan engine that can use five alternative fuels, such as dimethyl ether, methanol, hydrogen, methane, and ethanol, with different blending ratios to form five fuel blends. The proposed system is studied in this paper using exergoenvironmental analysis (which is known as environmental impact assessment by exergy) in order to quantify and evaluate the environmental impact. The combined turbofan has an exergetic efficiency of 82%, with total fuel and product exergy rates of 905 and 743 MW, respectively. The total environmental impact caused by emissions and exergy destructions has a range of 4000 to 9000 Pt/h for all the fuel blends. The specific exergoenvironmental impact values of electricity production vary from about 3 to 8 mPt/MJ for solid oxide fuel cells and 10 to 25 mPt/MJ for the three turbines. The exergoenvironmental impact of the thrust force is a minimum of 34 Pt/(h.kN) for the RF1 fuel and a maximum of 87 Pt/(h.kN) for the RF4 fuel. © 2022
ABSTRACT
AFRICAN DEVELOPMENT : About 35 mine vehicles were equipped with Hexagon's Operator Alertness System Heavy Vehicle (OAS-HV) at the Damang Mine in Ghana's Western Region. "Hexagon shares Gold Fields' vision of a safer, more connected mine," said Andrew Crose, VP-Autonomous, Hexagon's Mining division. "We're proud to be part of Damang's push for zero harm and appreciate their collaboration in such a successful deployment," Crose added. After a successful pilot project completed in late 2020-early 2021, full deployment of OAS-HV proceeded smoothly despite ongoing COVID-19 travel restrictions. The recent opening of Hexagon's Accra office and its staff of engineers and project managers ensured full collaboration with Gold Fields' teams, resulting in a high-quality project delivered on time and within budget. "The opening of our Accra office embodies Hexagon's strategy of being closer to the customer, ensuring expert staff are in-country to professionally perform onsite services," Crose explained
ABSTRACT
The current study presents useful digital monitoring tools for environmental impact assessment, sustainable development, safe infrastructures related to sustainable tourism, heritage and cultural tourism monuments, archaeological sites, water resources sports tourism sites, ecological landscape tourism sites close to landfill sites. Useful tools are presented for stakeholders examining particular digital utilities for decision making to mitigate toxic hazardous probable landfill gas's atmospheric pollution concentrations from landfill sites. In this paper are presented useful digital utilities as a framework of an integrated community health policy to support safe construction designs and proper monitoring schemes for public health protection and efficient economic designs. Integrated public health policy is presented within useful digital utilities applying proper management techniques for monitoring landfill emissions and decision making protecting community health and public health. Useful results are presented for sustainable construction facilities next to landfill sites that promote sustainable tourism, cultural - heritage tourism, sports tourism, ecological tourism and safety of associated community health infrastructures at post COVID-19 era within renewable resources from treated landfill emissions, green circular economy, clean technologies. © 2021 IEEE.
ABSTRACT
This paper analyses the role of useful digital monitoring utilities in terms of environmental impact assessment, sustainable development, safe health tourism construction infrastructures at post COVID - 19 era and public health protection from landfill gas emissions. Useful analysis is taken into account based on useful digital imaging utilities combined with hydraulics analysis so as to mitigate toxic hazardous concentrations at landfill sites. In this paper are presented safe biodegradation designs and proper monitoring schemes for public health protection and efficient economic designs. Integrated health policy is presented within useful digital transformation utilities and management techniques for monitoring landfill emissions protecting public health. Useful results are presented for the safety of particular community health tourism units, safe sports physical activities for all and sustainable tourism infrastructures at post COVID-19 era. © 2021 IEEE.