Research

Xiao-Yu’s research interests are dealing with various types of energy related problems. He has taken part in several researches, including water splitting technology on oxygen permeable membranes, nanofluid coolant at supercritical pressure and falling film evaporation cooling techniques. He has both research experiences on experiments and computer simulations, with a good background of mathematics, computer programming, and heat transfer, fluid dynamics and thermodynamics.

Following is a list of Xiao-Yu’s researches.

H2O/CO2 splitting on perovskite membrane at elevated temperature 

Supervisor: Prof. Ahmed F. Ghoniem, MIT

Continuous increase of CO2 concentration in atmosphere has raised the concern on global warming, which probably leads to extreme weather conditions and sea-level rises. Carbon dioxide capture and reuse is a promising way to decrease carbon emission while continue using the cheap and plentiful fossil fuel. The splitting of combustion products, i.e., H2O and CO2 into higher-valued products, i.e. syngas (H2 + CO) is a direct carbon reduction technique that can be combined into the fossil fuel power plants. In this research, mixed ionic-electronic conductive membrane is used to facilitate the process.

splitting

Nanofluids Coolant under Supercritical Pressure  

Supervisor: Prof. Wei Li, ZJU 

The cooling of the engine wall in an aircraft is a vital problem for the safety and performances of the aircraft. Regenerative cooling system, which uses kerosene fuel as the coolant, is widely applied in the engine industry. In this study, nano-particles are added into the the kerosene coolant in order to enhance cooling performances. Two-step method is applied to prepare the nanofluids of alumina and ferroferric oxide.

supercritical

Falling Film Evaporation Cooling on Enhanced Tubes   

Supervisor: Prof. Wei Li

One way to increase the industrial efficiency is to making use of the ‘waste’ heat. High temperature ‘waste’ heat can be utilized in power generation, but low temperature heat is not easy to utilize. Yet falling film evaporators can be utilized on the conditions of small temperature differences to reuse the low grade heat and improve system efficiency. However, the heat transfer mechanism of falling film evaporation is very complicated and not yet well understood. Additionally, the configured tubes can enhance the falling film evaporation heat transfer by orders of magnitude. Therefore, investigations are needed for the heat transfer characteristics of falling film evaporation on configured tubes bundle, in order to enrich the results of the falling film evaporation studies.

falling film

Synthesis of Carbon-Nanotubes on Cu plates  

Supervisor: Prof. Fu Liu

Efficient catalysts are always desired to facilitate chemical reactions so that the efficiency of the chemical process can be improved. Carbon nanotubes (CNTs) have high electron and thermal conductivity and excellent mechanical strength, so they are good candidate for catalyst supports. This project is the first stage to develop  CNTs as catalyst holders for catalytic dehydrogenation of N-ethyl carbazole in micro channels. N-ethyl carbazole acts as hydrogen storage for vehicles. CNTs loading the catalysts would be synthesized in copper micro channels.

Investigation of Temperature Distribution of Mixture Flows by CFD Software   

Supervisor: Prof. Kun Luo

The cooling water of power plant is much hotter than the surrounding water. When cooling water is injected into rivers or lakes, the heat pollution might affect the ecological system in the surrounding. In this project, I used commercial CFD software FLUENT to model the temperature profile of mixtures of water at different temperatures. The environment temperature was set to be 298 K. The effects of hot water temperature and flow rate were analyzed.