1584637510368896.png

Dr.Sagnik Chakraborty

School of environmental Science and Engineering,Jiangsu University.

Research Area:

Wastewater,Treatment,Adsorption,Biodegradation,Desalination,Soft Computing,Energy,Environmental Engineering.

Topic:

Challenges/ bottlenecks of desalination particular emphasis on Carbon Nanotube- A Perspective

Abstract:

The United Nations Environment Program states that freshwater shortage and stress are increasing in tropical regions as a result of expanding populations, tourism, climate change and pollution. Approximately 12,900 billion tons of freshwater is held in the Earth’s atmosphere holds and it distributes all over the world with fast replenishment. Atmospheric water harvesting offers a reliable promising strategy for clean water production in arid regions, land-locked, and remote communities. The vapor adsorbent is the viral element for atmospheric water harvesting devices based on absorbing-releasing process. The extraordinary volume of water vapor present in the atmosphere may serve as a potential water resource. The problem then in most cases is not a lack of available water, but rather the inability to obtain it in a cost-effective, reliable manner. Population growth and rising standards of living in many developing countries are increasing demand for clean, safe drinking water.   Atmospheric water harvesters are viable alternatives to existing water supply systems. Atmospheric water harvesting systems can also be considered as supplementary resources and logistical assets for consumers and industries that have limited access to appropriate water. Different types of atmospheric water harvesting methods and systems are introduced and related details are given for each method and the corresponding system. The experiments presented on passive radiative dew condensers (RDCs) have demonstrated the collection of dew as a complementary source of water, mainly in developing countries, rural areas or small islands, where free-access to water and energy is expensive. The findings would help water managers to predict the potential dew yield that could be harvested and used for an additional water resource in the water stressed regions where additional water resources are welcome, hence avoiding the installation of a passive dew water condenser. It is eventually worth mentioning that increasing the scale of the simulations would probably change the aerodynamic behaviour in close proximity of the condenser surface and accordingly, the distribution of surface temperature could not be uniform in large unit as it is in small ones varying the validation of the models. Then, computational fluid dynamics (CFDs) analyses could be performed in future research aimed at studying the possible scale effects.




1584673619537283.png

Asso. Prof. Cenk SEVİM 

AERO Wind Industry Inc.

Research Area: 

Energy Policy, Energy Economy, Renewable Energy Technology, New Trends in Energy Markets.

Topic: 

Trends of Global Energy Policy

Abstract:

The most debated subject in the energy community between 1950 and 2000 was the possible energy crises resulting from energy supply shortages. However, it can be said that at present there is an abundance of energy sources, be it fossil fuels or renewable energy sources. Today, the change in the high energy demand regions, transition efforts in energy technologies and greenhouse gas emissions due to energy production are the main topics of the global energy agenda. Until the 2000s, most of the primary energy demand originated from developed countries. But today, most of the primary energy demand originates from developing Asian countries, notably from China and India. According to the projections of the International Energy Agency (IEA),as income rates increase in China and India and more people join the middle class in the next 20 years, primary energy demand will rise. The same is expected for some Middle Eastern and African countries. As for developed coun¬tries, especially European countries and the USA,a decline in primary energy demand can be observed.

Today, the share of renewable energy investments in new energy investments has increased considerably. Wind energy and photovoltaic energy systems make up the largest share of renewable energy investments. One of the main reasons for the increase in renewable energy investments is the sharp decrease in Levelized cost of energy values. Furthermore, the increase in the sensitivity to climate change on a global scale increases the tendency towards renewable energy investments. Unfortunately, the efforts conducted against the climate change problem are far from the targeted scale. Climate change shows a trend at the border of danger. If there is no internationally binding agreement for the real fight against climate change, the upper temperature rise limit of 2 ° C will be exceeded. 

Finally, Covid-19 outbreak can be accepted as a game changer for global economy and investment medium. After Covid-19 outbreak probably a new period could be started for global economy as “Post Covid-19”.Without doubt global energy policy and economy will be affected this “Post Covid-19” period and new rules will be defined. 

The main aim of my speech is to make a situation assessment for energy trends on climate change axis. 




1.jpg

Prof. Saeid Eslamian 

Center for  Excellence in Risk Management and Natural Hazards

Research Area: 

Water Resources, Water Reuse, Risk Management, Natural Hazards, Hydroinformatics, Smart City and Resilience.

Topic: 

Sustainable Water Management using Atmospheric Water Harvesting

Abstract:

The United Nations Environment Program states that freshwater shortage and stress are increasing in tropical regions as a result of expanding populations, tourism, climate change and pollution. Approximately 12,900 billion tons of freshwater is held in the Earth’s atmosphere holds and it distributes all over the world with fast replenishment. Atmospheric water harvesting offers a reliable promising strategy for clean water production in arid regions, land-locked, and remote communities. The vapor adsorbent is the viral element for atmospheric water harvesting devices based on absorbing-releasing process.

The extraordinary volume of water vapor present in the atmosphere may serve as a potential water resource. The problem then in most cases is not a lack of available water, but rather the inability to obtain it in a cost-effective, reliable manner. Population growth and rising standards of living in many developing countries are increasing demand for clean, safe drinking water. 

Atmospheric water harvesters are viable alternatives to existing water supply systems. Atmospheric water harvesting systems can also be considered as supplementary resources and logistical assets for consumers and industries that have limited access to appropriate water. Different types of atmospheric water harvesting methods and systems are introduced and related details are given for each method and the corresponding system. 

The experiments presented on passive radiative dew condensers (RDCs) have demonstrated the collection of dew as a complementary source of water, mainly in developing countries, rural areas or small islands, where free-access to water and energy is expensive.  

The findings would help water managers to predict the potential dew yield that could be harvested and used for an additional water resource in the water stressed regions where additional water resources are welcome, hence avoiding the installation of a passive dew water condenser. It is eventually worth mentioning that increasing the scale of the simulations would probably change the aerodynamic behaviour in close proximity of the condenser surface and accordingly, the distribution of surface temperature could not be uniform in large unit as it is in small ones varying the validation of the models. Then, computational fluid dynamics (CFDs) analyses could be performed in future research aimed at studying the possible scale effects. 





Supported by

Media Support

Indexing Information

Official Wechat