Xingyu Sun

Bio: Xingyu Sun is an academic researcher from Hunan University. The author has contributed to research in topics: Combustion & Ignition system. The author has an hindex of 2, co-authored 2 publications receiving 27 citations.

A Perspective on the Overarching Role of Hydrogen, Ammonia, and Methanol Carbon-Neutral Fuels towards Net Zero Emission in the Next Three Decades

Abstract: Arguably, one of the most important issues the world is facing currently is climate change. At the current rate of fossil fuel consumption, the world is heading towards extreme levels of global temperature rise if immediate actions are not taken. Transforming the current energy system from one largely based on fossil fuels to a carbon-neutral one requires unprecedented speed. Based on the current state of development, direct electrification of the future energy system alone is technically challenging and not enough, especially in hard-to-abate sectors like heavy industry, road trucking, international shipping, and aviation. This leaves a considerable demand for alternative carbon-neutral fuels such as green ammonia and hydrogen and renewable methanol. From this perspective, we discuss the overarching roles of each fuel in reaching net zero emission within the next three decades. The challenges and future directions associated with the fuels conclude the current perspective paper.

Influence of novel turbulator on efficiency of solar collector system

Abstract: To reach more efficient solar system, hybrid nanomaterial has been applied through the tube. The pipe was equipped with new shape of turbulator to augment the swirl flow. Special shape of turbulator makes it possible to act as fin because of connection with pipe. Hybrid nanoparticles contain MWCNT and Al 2 O 3 and base fluid is H 2 O. To model the hybrid nanomaterial, empirical correlation were incorporated considering homogeneous mixture. Turbulent flow within the pipe was molded via K- ɛ technique. Insert of turbulator creates secondary flows which provide higher radial velocity and disruption of isotherms leads to higher convective flow. Checking the accuracy of modeling was done with comparing the obtained data with previous publication about turbulent flow within a tube equipped with turbulator. Augment of revolution can augment the velocity about 43.81% while temperature of plate decreases about 0.016%. Higher pumping power leads to rise of velocity about 99.05% while outlet temperature reduces about 0.096%. Nu and Darcy factor decline by 6.57% and 66.89% with augmenting b . Friction factor decreases with rise of Re by 12.43% while Nu goes up by 75.22%. • Hybrid nanomaterial was utilized inside the absorber pipe equipped with new turbulator. • Hybrid nanoparticles contain MWCNT and Al 2 O 3 . • Insert of turbulator creates secondary flows which provide higher radial velocity. • Augment of revolution can augment the velocity about 43.81%. • Friction factor decreases with rise of Re by 12.43%.