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The Stakeholders Using Strategy of Diversification for Taiwan's Business Transformation: Case on Air Conditioning IndustryHung, Li-Yun 06 September 2012 (has links)
As environmental protection issue become the most hot global issues recently, Air Conditioning Industry has to face not only its own management and marketing problems, but also the responsibilities to environmental pollution. Thus, how to deal with the external pressure, the international regimes, and internal pressure become more and more important toward Air Conditioning Industry. How could Air Conditioning Industry take balance between international regimes and its own growth and profit? In addition, it also briefly discusses how Air Conditioning Industry could use its own resource and the strategy of diversification to create different road, making a high pollution industry transform to a green industry. Thus, this study is divided into external and internal factors which make AC industry have to change by strategy of diversification, and cases studying of how Air Conditioner transform itself to fit in the external rapidly changing world. The transformation relies on the effort and cooperation of stakeholders of government, association, and enterprises. Consequently, how these stakeholders achieve the goals on development of Taiwan's heat pump market might be more and more important on Air Conditioning Industry's future.
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Psychrometric Testing Facility Restoration and Cooling Capacity TestingCline, Vincent E. 2010 August 1900 (has links)
The Psychrometric Testing Facility at the Riverside Energy Efficiency Laboratory at Texas AandM University has not been operational for several years. The goal of this project was to restore the testing facility to a fully operational condition for the purpose of supporting research and cooling capacity testing, with the latter following the appropriate standards.
Numerous changes were made to the coolant piping system, the data acquisition system, instrumentation, and temperature and humidity control to update and improve the facility. In addition, a computer program was developed and implemented that allows for flexible control of the facility’s conditions and collection of data while showing real time performance and refrigerant and psychrometric calculations. The current program flexibility, along with the proper combination of instrumentation, allows the Psychrometric Facility to operate with separate steady state environmental conditions in each room, according to, and meeting, the AHRI 210/240 standard.
Cooling capacity testing done on a split system residential unit was compared to the published AHRI rating to benchmark the state of the facility. Tested cooling capacity was about 3 percent below the published cooling capacity; tested EER was about 7 percent below the published EER; and finally, the calculated SEER based on the default degradation coefficient was about 10 percent below the published SEER. The difference in the calculated performance parameters to the published are expected due to unknown testing conditions used to calculate the published rating.
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Analysis and Experimental Investigation on Energy Consumption of a Science and Technology MuseumFan, Jia-wei 31 May 2005 (has links)
In this study, buildings in southern Taiwan area were selected to perform full-scale energy auditing experiment so that the energy consumption of each building can be analyzed comparatively. The result of experimental investigation and computer simulation were compared analytically with good accuracy obtained. The result can further facilitate as the design guide and energy indexes to be adapted in the national building energy code in the future
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A study of heat pump fin staged evaporators under frosting conditionsYang, Jianxin 30 September 2004 (has links)
This dissertation provides a detailed description of the research work completed on fin staged heat
exchangers. The effects of staging fin on the frosting performance of heat pump evaporators and the
whole heat pump system have been studied experimentally and theoretically.
Frost degrades the performance of fin-and-tube outdoor coils as well as the whole heat pump
system.
The objective of the experimental part of this study was to investigate the effects of the staging
fin on the frost/defrost performance of heat pump outdoor coils under different operating conditions. To
accomplish this objective, a series of frosting tests was conducted on an off-the-shelf heat pump system
with five (three two-row and two three-row) evaporators over a range of outdoor temperatures and
humidities and a range of airflow rates typical of those found in residential sized heat pumps.
Performances of the heat pump unit with baseline or fin staged outdoor coils at either frosting or
steady-state test conditions are compared and analyzed. Experimental data showed that for a given tworow
heat pump outdoor coil operating at the standard ANSI/ASHRAE 35 °F (1.7 °C) frosting conditions,
fin staging increased cycle time and COP. There was a small decrease in peak capacity at lower initial
airflow rates. At a lower temperature of 28 °F (2.2 °C), cycle time continued to be enhanced with fin
staging, and cyclic COP was within 5% of the base case when fin staging was used.
In the second step of this work, an analytical model to simulate the performance of both the
baseline and fin staged heat pump coils under frosting conditions was developed based on fundamental
heat and mass transfer principles. The transient performance of the frosted evaporator was analyzed with
the quasi-steady state approach. The section-by-section evaluation scheme was combined with the tubeby-
tube approach to model the mass transfer process in the frost formation module. The two-dimensional
fin surface was divided into a number of parallel non-overlapping sections. Each of the sections was the
calculation unit for the mass transfer. Methods for calculating the airside heat transfer coefficient and friction factor were developed and applied to the simulation model of the fin staged coil.
To verify the validity of the frosted evaporator model, the frosting performance of three two-row
coils at the same test conditions was simulated and compared with experimental data. The frosted
evaporator model appeared to provide satisfactory simulation of the fin-and-tube heat exchanger during
the frost buildup process. Comparisons with the test data indicated that the model could capture the trends of the coil capacity, pressure drop, airflow and frost growth. The model also provided a variety of other simulation results including frost mass accumulation, air velocity inside coil, air and refrigerant outlet state, and so on. Overall, the numerical results were in reasonable agreement with the test data under different frosting operation conditions.
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Investigation on a solar powered absorption air-conditioning system with partitioned hot water storage tank /Li, Zhongfu. January 2001 (has links)
Thesis (Ph. D.)--University of Hong Kong, 2001. / Includes bibliographical references (leaves 205-216).
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Predicting the capital cost of air conditioning installations in high rise commercial buildings /Wills, D. J. January 1986 (has links)
Thesis (M. Phil.)--University of Hong Kong, 1987.
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The Monitoring and Evaluation of Geothermal SystemsMaynard, Whitney E. 22 October 2010 (has links)
With the heightened importance of green engineering in today’s society,
harnessing the Earth’s internal energy has become ever more important. Specifically, the
use of geothermal heat pumps as a means of heating and cooling homes and municipal
buildings is on the rise. However, due to the high cost of installation and limited amount
of research conducted, geothermal systems in the State of Florida have yet to meet their
potential as an alternative heating and cooling source. With Florida’s relatively constant
ground temperature of 72 °F, an above average temperature gradient for both heating and
cooling of indoor areas is provided. To this end, this thesis investigates different
geothermal systems and their ability to utilize ground energy storage.
To conduct this research, four different geothermal systems were installed and
monitored over a period of one year. Testing of the installed systems monitored not only
overall efficiency, but also the soils reaction to heightened energy input. Conclusions
and recommendations are made as general design parameters for vertical column
geothermal well systems in the state of Florida.
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Experimental and theoretical investigation of a novel thermal storage system for electric vehicle climate conditioningFleming, Evan 20 November 2013 (has links)
A prototype thermal storage system, using phase change materials, was developed for a novel electric vehicle climate conditioning application. The proposed system consists of a heat transfer fluid circulating between either an on-board hot or cold thermal storage unit, which we refer to as thermal battery, and a liquid-air heat exchanger that provides heat exchange with the incoming air to the vehicle cabin. The research presented herein focuses primarily on the development of the on-board system and hot battery. While the air conditioning system was developed strictly for laboratory use, it was designed to meet application realistic performance metrics, e.g., a heat dissipation rate of 2 kW. The prototype was tested with three phase change materials: paraffin wax, xylitol, and erythritol. Furthermore, a full system thermodynamic model was developed to predict thermal performance that features semi-analytic solution to the coupled forced convection and phase change conduction heat transfer. Modeling results are compared against a numerical benchmark as well as our own experimental data. / text
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Optimization of building cooling system based on genetic algorithms and thermal energy storageWong, Kin-chuen, 黃健全 January 2011 (has links)
published_or_final_version / Mechanical Engineering / Master / Master of Philosophy
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Dynamic response of a cooling and dehumidifying coil to variations in air flow rate葉啓明, Ip, Kai-ming. January 1997 (has links)
published_or_final_version / Mechanical Engineering / Master / Master of Philosophy
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