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Analysis of energy conversion systems, including material and global warming aspectsZhang, Mingyuan 12 October 1995 (has links)
With the rapid increase of the world energy demand and
consumption, the method and techniques to analyze, improve
and optimize energy conversion systems have to deal not only
with direct fuel exergy (energy) consumption, but also with
other resources, which have associated exergy consumptions,
and with environmental impacts, such as global warming.
A general method for energy conversion system analysis
is presented in this thesis. This method uses exergy as a
measure to compare and analyze the natural resource
consumption (both fuels and materials) and the global
warming impact of different energy conversion systems for
their life-time. The method, which adds the fuel production
exergy and material exergy into consideration, allows more
complete exergy analyses to be conducted. The global warming
impact due to the chemical emissions and impact associated
with direct exergy consumption (fuel consumption) as well as
system equipment materials consumption of the energy
conversion system are considered together in this thesis.
Based on the concept of exergy, the Total Equivalent
Resource Exergy (TERE), which includes both direct resource
exergy consumption and resource exergy needed to recover the
total equivalent global warming gases of the energy
conversion system, is proposed in this thesis. TERE uses
exergy as a criterion to compare the energy conversion
systems and providing information of how effective a system
is regarding the use of natural resources. The calculation
of TERE values for the selected energy conversion systems
indicates that the resource exergy and the environmental
impact exergy are both substantial impacts and should be
compared together. This concept of TERE can be used as the
objective function for energy system design and
optimization. / Graduation date: 1996
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An analysis regarding energy efficiency in metro Atlanta's private office buildingsFore, Elizabeth K.. January 2009 (has links)
Thesis (M. S.)--Building Construction, Georgia Institute of Technology, 2009. / Committee Chair: Kathy Roper; Committee Member: Daniel Castro-Lacouture; Committee Member: Linda Thomas-Mobley. Part of the SMARTech Electronic Thesis and Dissertation Collection.
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An analysis regarding energy efficiency in metro Atlanta's private office buildingsFore, Elizabeth K. 12 June 2009 (has links)
Commercial office building occupants are a significant consumer of electricity, and they subsequently contribute a significant amount of greenhouse gases into the environment in the process. An opportunity exists to improve the energy efficiency in existing buildings, and the Energy Star certification program provides both tools to do so and an independent verification of a building's superior energy efficiency. However, only 16% of metro Atlanta's office space has achieved this certification.
The intent of the research was to identify the current state of energy efficiency in buildings, and to identify potential obstacles to obtaining the Energy Star certification. Towards this goal, secondary research was conducted among prominent academic journals, as well as numerous professional and governmental organizations and publications. Primary research was conducted through an online survey of Facility Managers, Property Managers, and Building Engineers of Energy Star office buildings and comparable non-Energy Star office buildings in the metro Atlanta area. The survey was conducted mostly using closed-ended questions using a Likert scale so as to provide a basis for statistical analysis among responses, and open-ended questions were also included to identify the current state of energy efficiency practices.
The research identified three areas which hold statistically significant differences between Energy Star and directly comparable buildings. An analysis also determined that building age does seem to play a role in the building representatives' responses. Four conclusions were found regarding characteristics of Energy Star buildings themselves.
The research also identified five conclusions regarding the expected result when pursuing the Energy Star certification. These conclusions include the best method to achieve the Energy Star certification, the expected energy savings, the expected time spent to achieve the certification, the expected cost to achieve the certification, and the main reasons to recertify the building.
Finally, this research highlights innovative practices in other states and cities, such as financial incentives and legislation which require commercial buildings to obtain a building rating. Such innovative practices are currently not employed in the Atlanta metro area, but would be beneficial to both the Atlanta area and individual buildings.
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An index to measure the influences of climate on residential natural gas demandSánchez-Lugo, Ahira M January 2007 (has links)
Thesis (M.S.)--University of Hawaii at Manoa, 2007. / Includes bibliographical references (leaves 69-71). / x, 71 leaves, bound ill., maps 29 cm
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