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Articles 1 - 30 of 79
Full-Text Articles in Physical Sciences and Mathematics
Experimental And Theoretical Evaluation Of A Commercial Luminescent Dye For Pvt Systems, Kenneth Coldrick, James Walshe, Sarah Mccormack, John Doran, George Amarandei
Experimental And Theoretical Evaluation Of A Commercial Luminescent Dye For Pvt Systems, Kenneth Coldrick, James Walshe, Sarah Mccormack, John Doran, George Amarandei
Articles
Combining photovoltaic (PV) and photo-thermal (PT) energy collection strategies in a single system can enhance solar energy conversion efficiencies, leading to increased economic returns and wider adoption of renewable energy sources. This study focuses on incorporating a commercial luminescent organic dye (BASF Lumogen F Red 305) into ethylene glycol to explore its potential for PVT applications. The optical and electrical characteristics of the working fluid were evaluated at different temperatures under direct solar irradiance. Pristine ethylene glycol reduced the maximum PV cell temperature by 10 °C. The inclusion of luminescent dye at various concentrations further reduced the maximum temperature, with …
The Role Of The Dispersion Parameter In Electrical Properties Of Highly Disordered Insulating Materials, Zachary Gibson
The Role Of The Dispersion Parameter In Electrical Properties Of Highly Disordered Insulating Materials, Zachary Gibson
Physics Student Research
Charge transport in disordered solids can be described with use of a dispersion parameter. The dispersion parameter can be defined simply as either the thermal energy (low electric field regime) or the field energy (high field regime) scaled by the reciprocal of a characteristic energy of the material. A transitionary temperature and electric field are defined when the ratio of thermal or field energy over the characteristic energy is one, respectively. This indicates a transition from dispersive transport to normal transport. Dispersive transport can be described simply by the dispersion parameter for many disordered materials. Models involving the dispersion parameter …
Charge Transport In Disordered Materials And The Dispersion Parameter, Zachary Gibson
Charge Transport In Disordered Materials And The Dispersion Parameter, Zachary Gibson
Physics Student Research
Charge transport in disordered solids can be described with use of a dispersion parameter. The dispersion parameter can be defined simply as either the thermal energy (low electric field regime) or the field energy (high field regime) scaled by the reciprocal of a characteristic energy of the material. A transitionary temperature and electric field are defined when the ratio of thermal or field energy over the characteristic energy is one, respectively. This indicates a transition from dispersive transport to normal transport. Dispersive transport can be described simply by the dispersion parameter for many disordered materials. Models involving the dispersion parameter …
Distributed Renewable Energy, K.K. Duvivier
Distributed Renewable Energy, K.K. Duvivier
Sturm College of Law: Faculty Scholarship
For individuals, the heating and cooling of buildings is the second largest source of U.S. CO2 emissions after transportation. This chapter suggests pathways to help deploy the two most promising categories of U.S. distributed renewable energy resources to reduce these emissions—photovoltaic solar matched with storage and thermal sources for hot water and for heating and cooling buildings. Distributed generation is probably the energy source most impacted by different levels of government and nongovernmental actors. However, distributed generation is also most immediate to consumers, especially with new technologies or rate structures that give them feedback about their own individual generation and …
R-Factor Of Various Materials
Activities
Even though it has been over 150 years since the First Law of Thermodynamics was discovered, we still find that heat is misunderstood. For example, the many environmental science textbooks define heat as "the total kinetic energy of atoms or molecules in a substance not associated with bulk motion of the substance." THIS IS WRONG! What these books are describing is the thermal energy of a system. This is a common misconception. While heat is energy, it is not a containable form of energy since, by its very definition, heat is energy that is transferred. In particular, heat is the …
Operating Temperature Of A Solar Thermal Stirling Engine, Spencer Beck
Operating Temperature Of A Solar Thermal Stirling Engine, Spencer Beck
Senior Theses
This paper explores the relationship between the operating temperature and electricity production of a simple heat engine. A Stirling engine was designed and constructed which runs on solar thermal energy collected by a Fresnel lens. The surface area of the solar collector was varied. This manipulated the operating temperature of the Stirling engine in order to measure power output. The mechanical energy from the engine was converted to electricity using a DC motor running in reverse, acting like a generator, in conjunction with an Arduino for data collection. Although adjustments must be made in order to improve the efficiency of …
The Development Of A High Performance Concrete To Store Thermal Energy For Concentrating Solar Power Plants, Emerson Esmond John
The Development Of A High Performance Concrete To Store Thermal Energy For Concentrating Solar Power Plants, Emerson Esmond John
Graduate Theses and Dissertations
In recent years, due to rising energy costs as well as an increased awareness of the environmental effects of greenhouse gas emissions produced through traditional forms of energy production, there is great interest in developing alternative sources of energy. One of the most viable alternative energy sources is solar energy. In particular, concentrating solar power (CSP) technologies have been identified as an option for meeting utility needs in the U.S. Southwest. These systems are required to produce electricity not only during periods of high solar radiation but also during times of reduced radiation due to cloud cover, and even extend …
Slides: Impacts Of Oil Shale On Carbon Emissions, Jeremy Boak
Slides: Impacts Of Oil Shale On Carbon Emissions, Jeremy Boak
The Promise and Peril of Oil Shale Development (February 5)
Presenter: Dr. Jeremy Boak, Center for Oil Shale Technology & Research, Colorado School of Mines
43 slides
Volume 7, Number 7 (July 1983), The Solar Ocean Energy Liaison
Volume 7, Number 7 (July 1983), The Solar Ocean Energy Liaison
The OTEC Liaison
No abstract provided.
Volume 7, Number 6 (June 1983), The Solar Ocean Energy Liaison
Volume 7, Number 6 (June 1983), The Solar Ocean Energy Liaison
The OTEC Liaison
No abstract provided.
Volume 7, Number 5 (May 1983), The Solar Ocean Energy Liaison
Volume 7, Number 5 (May 1983), The Solar Ocean Energy Liaison
The OTEC Liaison
No abstract provided.
Volume 7, Number 4 (April 1983), The Solar Ocean Energy Liaison
Volume 7, Number 4 (April 1983), The Solar Ocean Energy Liaison
The OTEC Liaison
No abstract provided.
Volume 7, Number 3 (March 1983), The Solar Ocean Energy Liaison
Volume 7, Number 3 (March 1983), The Solar Ocean Energy Liaison
The OTEC Liaison
No abstract provided.
Volume 7, Number 2 (February 1983), The Solar Ocean Energy Liaison
Volume 7, Number 2 (February 1983), The Solar Ocean Energy Liaison
The OTEC Liaison
No abstract provided.
Volume 7, Number 1 (January 1983), The Solar Ocean Energy Liaison
Volume 7, Number 1 (January 1983), The Solar Ocean Energy Liaison
The OTEC Liaison
No abstract provided.
Volume 6, Number 12 (December 1982), The Solar Ocean Energy Liaison
Volume 6, Number 12 (December 1982), The Solar Ocean Energy Liaison
The OTEC Liaison
No abstract provided.
Volume 6, Number 11 (November 1982), The Solar Ocean Energy Liaison
Volume 6, Number 11 (November 1982), The Solar Ocean Energy Liaison
The OTEC Liaison
No abstract provided.
Volume 6, Number 10 (October 1982), The Solar Ocean Energy Liaison
Volume 6, Number 10 (October 1982), The Solar Ocean Energy Liaison
The OTEC Liaison
No abstract provided.
Volume 6, Number 9 (September 1982), The Solar Ocean Energy Liaison
Volume 6, Number 9 (September 1982), The Solar Ocean Energy Liaison
The OTEC Liaison
No abstract provided.
Volume 6, Number 8 (August 1982), The Solar Ocean Energy Liaison
Volume 6, Number 8 (August 1982), The Solar Ocean Energy Liaison
The OTEC Liaison
No abstract provided.
Volume 6, Number 7 (July 1982), The Solar Ocean Energy Liaison
Volume 6, Number 7 (July 1982), The Solar Ocean Energy Liaison
The OTEC Liaison
No abstract provided.
Volume 6, Number 6 (June 1982), The Solar Ocean Energy Liaison
Volume 6, Number 6 (June 1982), The Solar Ocean Energy Liaison
The OTEC Liaison
No abstract provided.
Volume 6, Number 5 (May 1982), The Solar Ocean Energy Liaison
Volume 6, Number 5 (May 1982), The Solar Ocean Energy Liaison
The OTEC Liaison
No abstract provided.
Volume 6, Number 4 (April 1982), The Solar Ocean Energy Liaison
Volume 6, Number 4 (April 1982), The Solar Ocean Energy Liaison
The OTEC Liaison
No abstract provided.
High-Temperature Battery Calorimeter, L. D. Hansen, R. H. Hart, D. M. Chen, H. F. Gibbard
High-Temperature Battery Calorimeter, L. D. Hansen, R. H. Hart, D. M. Chen, H. F. Gibbard
Faculty Publications
A battery calorimeter was built for the measurement of thermal energy generation of high-temperature lithium–aluminum/iron sulfide battery cells, which are under development for electric vehicle propulsion and other energy storage applications. The calorimeter was designed with a temperature range of 400˚–500˚C, a detection limit of 1 mW, and an upper limit of heat flow of 50 W. The results of measurements on 200-Ah LiAl/FeS cells were in excellent agreement with the predictions of thermodynamic calculations based on precise measurements of the total cell polarization and the temperature coefficient of the emf. Details of the construction and operation principles of this …
Volume 6, Numbers 1 & 2 (February & March 1982), The Solar Ocean Energy Liaison
Volume 6, Numbers 1 & 2 (February & March 1982), The Solar Ocean Energy Liaison
The OTEC Liaison
Note that this issue should be Numbers 2 & 3, not Numbers 1 & 2.
Volume 6, Number 1 (January 1982), The Solar Ocean Energy Liaison
Volume 6, Number 1 (January 1982), The Solar Ocean Energy Liaison
The OTEC Liaison
No abstract provided.
Volume 5, Number 12 (December 1981), The Solar Ocean Energy Liaison
Volume 5, Number 12 (December 1981), The Solar Ocean Energy Liaison
The OTEC Liaison
No abstract provided.
Volume 5, Number 11 (November 1981), The Solar Ocean Energy Liaison
Volume 5, Number 11 (November 1981), The Solar Ocean Energy Liaison
The OTEC Liaison
No abstract provided.
Volume 5, Number 10 (October 1981), The Solar Ocean Energy Liaison
Volume 5, Number 10 (October 1981), The Solar Ocean Energy Liaison
The OTEC Liaison
No abstract provided.