2 resultados para autothermal reforming

em Duke University


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Hydrogen has been called the fuel of the future, and as it’s non- renewable counterparts become scarce the economic viability of hydrogen gains traction. The potential of hydrogen is marked by its high mass specific energy density and wide applicability as a fuel in fuel cell vehicles and homes. However hydrogen’s volume must be reduced via pressurization or liquefaction in order to make it more transportable and volume efficient. Currently the vast majority of industrially produced hydrogen comes from steam reforming of natural gas. This practice yields low-pressure gas which must then be compressed at considerable cost and uses fossil fuels as a feedstock leaving behind harmful CO and CO2 gases as a by-product. The second method used by industry to produce hydrogen gas is low pressure electrolysis. In comparison the electrolysis of water at low pressure can produce pure hydrogen and oxygen gas with no harmful by-products using only water as a feedstock, but it will still need to be compressed before use. Multiple theoretical works agree that high pressure electrolysis could reduce the energy losses due to product gas compression. However these works openly admit that their projected gains are purely theoretical and ignore the practical limitations and resistances of a real life high pressure system. The goal of this work is to experimentally confirm the proposed thermodynamic gains of ultra-high pressure electrolysis in alkaline solution and characterize the behavior of a real life high pressure system.

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ABSTRACT

This thesis examines the theological correlation between the role of the church, the identity and role of the African American male, and the effectiveness of fatherhood. The study begins with an in-depth analysis of how absentee fathers cause a crisis in the family. The absence of fathers from the home causes children to suffer financially, socially and psychologically, and therefore causes a disruption in the community as a whole. Focus on the Family founder and leader, Dr. James Dobson, confirms that “our very survival as a people will depend upon the presence or absence of masculine leadership in millions of homes.” In person interviews of African American Christian males and interpretation of the scriptures are just two of the methods used in this study to explore the theological norm of fatherhood. Collectively, the case studies and statistical data within this study explore attempts to remedy the crisis through governmental policies and networking within the community. The final chapter examines the role of urban churches and clergy in teaching effective fatherhood practices. Within the conclusion, it is made clear that the church is responsible for establishing the theological framework and principles for understanding the intended role of being a father. Another conclusion of this study is the acknowledgement of the African American community’s role in shaping and reforming the identity and role of the African American male as a father in the home. The African American community and the church must continue working in tandem to encourage organic social networks that will promote a model for effective fatherhood practices.