Papers by Guy Francis Mongelli
Research and reviews: journal of material sciences, 2018
Shale gas has received much attention over the past decade as a source of energy and raw material... more Shale gas has received much attention over the past decade as a source of energy and raw materials for organic synthesis. Presently, it is a multi-billion-dollar economic sector that is growing rapidly. Many analysts suggest that its great availability in the United States poses a strong opportunity to decrease the cost of energy and commercial products, to provide jobs which build the infrastructure to support its processing and delivery, to create an additional export commodity to sell to foreign countries that need it, and to contribute significantly to the U.S. Gross Domestic Product (GDP). However, only 17% is available for extraction from the ground without a mechanism for enhanced recovery. The standard technique, through which an additional (36-46)% may be obtained, is hydrofracking. Hydraulic fracturing-also called hydrofracturing, fracking, and HF for short-is the drilling and pumping of pressurized solutions into the ground to obtain natural gas from shale rocks, strongly related to the concept of gas permeability ABSTRACT Hydraulic fracturing, or fracking, is a technique used to excavate natural gas and oil trapped within porous layers of shale thousands of feet below the surface. The process stands to provide enormous benefits to the United States as a means of harvesting a previously unobtainable source of energy and of alleviating dependence on foreign oil. There are clear challenges which must be overcome, however, to fairly address public concerns over the amount of toxic chemicals used and the potential dangers posed to drinking water resources. Written from an engineering standpoint, this report aims to identify the challenges that the industry is facing while posing reasonable solutions. The body of the report examines established literature on the technology utilized by fracking, its impacts on the environment and human health, the current state of government regulations on fracking, its impact on the U.S. economy, and its required infrastructure, among other topics of interest.
Research & development in materials science, Apr 25, 2018
This work solves the coupled governing differential equations for three CSTRs in series with gove... more This work solves the coupled governing differential equations for three CSTRs in series with governing reaction A->B->C. The goal is to optimize the setup for the maximization of the intermediate product B. The results demonstrate the non-linearity of CSTRs in series intermediate product concentrations with respect to the volumes of each of the reactors. The total volume of the CSTRs is held constant and the volume of each of the CSTRs at a specified reaction rate ratio is determined to maximize intermediate product formation. The volume of the third reactor can be eliminated from such an equation from knowledge of the total volume constraint. The general approach is to write an equation describing the outlet concentration of the intermediate product is determined for three CSTRs in series.
Research & development in materials science, Feb 23, 2018
In this manuscript, the perhaps largest milestones of multi-junction solar cells over the first d... more In this manuscript, the perhaps largest milestones of multi-junction solar cells over the first decade in the twenty-first century will be discussed with particular emphasis on devices with noteworthy commercial and practical viability.
Industrial chemistry, 2018
According to the World Energy Outlook, the demand for coal will increase if conservative measures... more According to the World Energy Outlook, the demand for coal will increase if conservative measures are not taken. As a result, carbon dioxide emissions will increase from coal use. Current manufacturing facilities use a large amount of external utilities, but measures can be taken to reduce the amount of energy such a facility needs by using energy generated from process streams. Using process data from a process of toluene conversion, the energy requirements for a pilot scale and full-scale manufacturing plant were minimized using pinch analysis and the resulting heat exchanger network was designed. A cost analysis was performed to determine the monetary savings associated with the new plant design, as well as the amount of coal saved as a result. Since para-xylene is the most valuable xylene isomer produced, the production of the isomer was optimized by modeling the concentration profiles with several reactor systems. The dynamics of a heat exchanger were examined and modeled using the heat exchanger equation. The temperature profile as a function of both time and exchanger position was obtained using both a finite element analysis and using an analytical solution.
Research & development in materials science, Aug 8, 2018
In this manuscript, a few key milestones in the development of display technologies are discussed... more In this manuscript, a few key milestones in the development of display technologies are discussed. This manuscript details the 'holy grail' of display technologies then details several noteworthy technologies including e-ink, plasma displays, LCDs, OLEDs, quantum dot (QD) displays and several others. This document is written for the executive or student who is interesting in peeling back the first layer of understanding this relatively complex device. What makes an OLED different from an LED is discussed. Lastly, several recent advances in ancillary features for display technologies are named.
Journal of Material Sciences & Engineering, Sep 8, 2016
Within this work a new property determinable by computational molecular dynamics simulation is de... more Within this work a new property determinable by computational molecular dynamics simulation is detailed. That is the surface parameter, which is an indicator of the placement of a molecule with respect to the interface. It is helpful in identifying quickly if a molecule is surface active, especially in mixed solvent systems. The code for the determination of this property is executed in FORTRAN, a widespread and readily available package on most supercomputing systems where GROMACS is deployed.
Research & Development in Material Science
This work solves the coupled governing differential equations for three CSTRs in series with gove... more This work solves the coupled governing differential equations for three CSTRs in series with governing reaction A->B->C. The goal is to optimize the setup for the maximization of the intermediate product B. The results demonstrate the non-linearity of CSTRs in series intermediate product concentrations with respect to the volumes of each of the reactors. The total volume of the CSTRs is held constant and the volume of each of the CSTRs at a specified reaction rate ratio is determined to maximize intermediate product formation. The volume of the third reactor can be eliminated from such an equation from knowledge of the total volume constraint. The general approach is to write an equation describing the outlet concentration of the intermediate product is determined for three CSTRs in series.
Research & Development in Material Science
In this manuscript, the perhaps largest milestones of multi-junction solar cells over the first d... more In this manuscript, the perhaps largest milestones of multi-junction solar cells over the first decade in the twenty-first century will be discussed
with particular emphasis on devices with noteworthy commercial and practical viability
Industrial Chemistry
According to the World Energy Outlook, the demand for coal will increase if conservative measures... more According to the World Energy Outlook, the demand for coal will increase if conservative measures are not taken.
As a result, carbon dioxide emissions will increase from coal use. Current manufacturing facilities use a large amount of
external utilities, but measures can be taken to reduce the amount of energy such a facility needs by using energy generated
from process streams. Using process data from a process of toluene conversion, the energy requirements for a pilot scale and
full-scale manufacturing plant were minimized using pinch analysis and the resulting heat exchanger network was designed.
A cost analysis was performed to determine the monetary savings associated with the new plant design, as well as the amount
of coal saved as a result. Since para-xylene is the most valuable xylene isomer produced, the production of the isomer was
optimized by modeling the concentration profiles with several reactor systems. The dynamics of a heat exchanger were
examined and modeled using the heat exchanger equation. The temperature profile as a function of both time and exchanger
position was obtained using both a finite element analysis and through the use of an analytical solution.
Research & Reviews Journal of Material Sciences
Shale gas has received much attention over the past decade as a source of energy and raw material... more Shale gas has received much attention over the past decade as a source of energy and raw materials for organic synthesis. Presently, it is a multi-billion-dollar economic sector that is growing rapidly. Many analysts suggest that its great availability in the United States poses a strong opportunity to decrease the cost of energy and commercial products, to provide jobs which build the infrastructure to support its processing and delivery, to create an additional export commodity to sell to foreign countries that need it, and to contribute significantly to the U.S. Gross Domestic Product (GDP). However, only 17% is available for extraction from the ground without a mechanism for enhanced recovery. The standard technique, through which an additional (36-46)% may be obtained, is hydrofracking. Hydraulic fracturing -also called hydrofracturing, fracking, and HF for short -is the drilling and pumping of pressurized solutions into the ground to obtain natural gas from shale rocks, strongly related to the concept of gas permeability ABSTRACT Hydraulic fracturing, or fracking, is a technique used to excavate natural gas and oil trapped within porous layers of shale thousands of feet below the surface. The process stands to provide enormous benefits to the United States as a means of harvesting a previously unobtainable source of energy and of alleviating dependence on foreign oil. There are clear challenges which must be overcome, however, to fairly address public concerns over the amount of toxic chemicals used and the potential dangers posed to drinking water resources. Written from an engineering standpoint, this report aims to identify the challenges that the industry is facing while posing reasonable solutions. The body of the report examines established literature on the technology utilized by fracking, its impacts on the environment and human health, the current state of government regulations on fracking, its impact on the U.S. economy, and its required infrastructure, among other topics of interest.
Research & Development in Material Science
In this manuscript, a few key milestones in the development of display technologies are discussed... more In this manuscript, a few key milestones in the development of display technologies are discussed. This manuscript details the 'holy grail' of display technologies then details several noteworthy technologies including e-ink, plasma displays, LCDs, OLEDs, quantum dot (QD) displays and several others. This document is written for the executive or student who is interesting in peeling back the first layer of understanding this relatively complex device. What makes an OLED different from an LED is discussed. Lastly, several recent advances in ancillary features for display technologies are named.
International Journal of Chemistry, Mathematics and Physics
International Journal of Chemistry, Mathematics and Physics
International Journal of Chemistry, Mathematics and Physics
International Journal of Chemistry, Mathematics and Physics
Within this work the computation to describe the out-coupling efficiency limitation of a classica... more Within this work the computation to describe the out-coupling efficiency limitation of a classical OLED structure is detailed. This manuscript takes a classical geometrical optics approach, combined with fundamental integral calculus. Several specific cases are developed with numerical results. This model looks at the geometrical optics surrounding total internal reflection, including: defining the critical angle, considering the luminous flux distribution at various angles of incidence, and considering the critical angle different materials make with organic layers, ITO, SiNy and air. The critical angles made with typical organic compounds are also studied.
International Journal of Chemistry, Mathematics and Physics
International Journal of Chemistry, Mathematics and Physics
Journal of Material Science & Engineering
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Papers by Guy Francis Mongelli
with particular emphasis on devices with noteworthy commercial and practical viability
As a result, carbon dioxide emissions will increase from coal use. Current manufacturing facilities use a large amount of
external utilities, but measures can be taken to reduce the amount of energy such a facility needs by using energy generated
from process streams. Using process data from a process of toluene conversion, the energy requirements for a pilot scale and
full-scale manufacturing plant were minimized using pinch analysis and the resulting heat exchanger network was designed.
A cost analysis was performed to determine the monetary savings associated with the new plant design, as well as the amount
of coal saved as a result. Since para-xylene is the most valuable xylene isomer produced, the production of the isomer was
optimized by modeling the concentration profiles with several reactor systems. The dynamics of a heat exchanger were
examined and modeled using the heat exchanger equation. The temperature profile as a function of both time and exchanger
position was obtained using both a finite element analysis and through the use of an analytical solution.
with particular emphasis on devices with noteworthy commercial and practical viability
As a result, carbon dioxide emissions will increase from coal use. Current manufacturing facilities use a large amount of
external utilities, but measures can be taken to reduce the amount of energy such a facility needs by using energy generated
from process streams. Using process data from a process of toluene conversion, the energy requirements for a pilot scale and
full-scale manufacturing plant were minimized using pinch analysis and the resulting heat exchanger network was designed.
A cost analysis was performed to determine the monetary savings associated with the new plant design, as well as the amount
of coal saved as a result. Since para-xylene is the most valuable xylene isomer produced, the production of the isomer was
optimized by modeling the concentration profiles with several reactor systems. The dynamics of a heat exchanger were
examined and modeled using the heat exchanger equation. The temperature profile as a function of both time and exchanger
position was obtained using both a finite element analysis and through the use of an analytical solution.