Academic literature on the topic 'Collector's Department'
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Collector's Department.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Journal articles on the topic "Collector's Department"
1
Alexandrova, N. V. "Коллекция документов Ивана Абрамовича Морозова в отделе рукописей Государственного музея изобразительных искусств им. А.С. Пушкина." Iskusstvo Evrazii [The Art of Eurasia], no. 1(20) (March 31, 2021): 90–105. http://dx.doi.org/10.46748/arteuras.2021.01.007.
Full textAbstract:
The famous collections of new art works of the late 19th – early 20th centuries of the great collectors S.I. Shchukin and I.A. Morozov have a pronounced individual character. The documentary materials of these collectors, stored in the Department of manuscripts of the Pushkin State Museum of Fine Arts, are also distinct. The preservation, number and typology of documents reflect not only the personality and fate of the collectors, but also the history of the country. The first special address to the history of formation and the composition of I.A. Morozov's documents collection complements the collector's way and the fate of his collection. Leaving practically no personal and family documents, I.A. Morozov carefully handed over business papers to the museum curators, confirming the immaculate provenance of his collection. Drawing attention to personal provenance funds brings to the fore the importance of their acquisition and preservation. Знаменитые собрания произведений нового искусства конца XIX – начала XX века великих коллекционеров С.И. Щукина и И.А. Морозова носят ярко выраженный индивидуальный характер. Также непохожи и документальные материалы этих собирателей, хранящиеся в отделе рукописей Государственного музея изобразительных искусств им. А.С. Пушкина. Сохранность, численность и типология документов отражают не только личность и судьбу коллекционеров, но и историю страны. Первое специальное обращение к истории формирования и составу коллекции документов И.А. Морозова дополняет коллекционерский путь собирателя и судьбу его коллекции. Не оставив практически никаких личных и семейных документов, И.А. Морозов бережно передал музейным хранителям деловые бумаги, подтверждающие безупречный провенанс его коллекции. Привлечение внимания к фондам личного происхождения актуализирует важность их комплектования и сохранения.
2
Doroshenko, A. V., and V. F. Khalak. "The prospects of polymeric materials in assembling the solar water-thermal collectors. Comparative data analysis and exploratory research of promising solutions." Refrigeration Engineering and Technology 54, no. 5 (October 30, 2018): 44–52. http://dx.doi.org/10.15673/ret.v54i5.1250.
Full textAbstract:
Concerning the construction of a solar water-thermal collector – the analysis of the applied polymeric materials has been performed in relation to manufacturing of its main parts – the heat absorber and the transparent cover. The use of polymers in the construction of the solar water-thermal collector allows one to lower the manufacturing costs, make the collector light-weight and reduce its price. An analytical review based on the domestic and foreign research and development, published in scientific journals over the past few years, which the authors hope shall be a useful reading in the design-engineering departments responsible for constructing the polymeric solar collectors is the goal of the present work, along with the comparative analysis provided further on the collectors’ efficiency for making a choice of material and the solar energy capture systems’ testing methodology. As the fundamental direction of further improvement of the polymeric solar collectors, the authors aim at: elimination of the air gap between the heat absorber and the transparent cover, leading to construction of a monoblock solar collector; optimization of the heat absorber’s and the transparent cover’s flow channels in solar water-thermal collectors, which concern their compages as well as the size and geometry of the hydraulic collector; optimization of the transparent cover’s channels size as the means of air circulation, which lowers summary heat losses in solar water-thermal collectors; studying the evenness of the heating agent’s distribution in the heat absorber’s channels out in the field, to pursue the improvements in efficiency of the solar water-thermal collectors, and to avoid the heat shock of a solar water-thermal collector’s structural elements upon uneven warming-up. In the present work the analysis has been performed on the summary heat losses (convective and radiation losses realized from the solar collector’s heated-up elements) which depend on a polymeric solar collector’s operating conditions and geometrics as well as on a solar energy capture system’s external environment; a tryout facility has been built, affording a comparative analysis of various solutions; and the main objectives of further research in the field of polymeric solar collectors, particularly, the questions on improvement of their assembly realisation, and reliability of multifunctional solar energy capture systems have been formulated.
3
Mahmood, Yaseen H., Adnan M. Khalid, and Abdulsalam S. Baqi. "Theoretical Efficiency and Practicality of the Solar Trough Collector / Tikrit-Iraq." NeuroQuantology 19, no. 5 (June 10, 2021): 18–24. http://dx.doi.org/10.14704/nq.2021.19.5.nq21044.
Full textAbstract:
An experimental and theoretical study was conducted to attain solar collectors’ thermal efficiency. Testing was done during May of 2019 on a solar collector’s surface at the Physics Department of the University of Tikrit. The absorbent tubes used had a length of 1.5 m, were painted black, made of copper, had an outer diameter of 0.03 m, internal diameter of 0.028 m, and a tank capacity of 40L. By entering these specifications along with those of the solar collector, the theoretical thermal efficiency was calculated. The findings showed that practical efficiency curves and useful thermal energy absorbed by the water contained goes down when using copper tubing. The results also illustrated that useful thermal energy and thermal efficiency increases along with increasing the mass flow rate of water.
4
Waksman, D., and W. C. Thomas. "The NBS Solar Collector Reliability/Durability Test Program: Summary of Results and Recommendations for Collector Testing." Journal of Solar Energy Engineering 108, no. 1 (February 1, 1986): 35–40. http://dx.doi.org/10.1115/1.3268060.
Full textAbstract:
Efforts in the development of reliability/durability tests for solar collectors and their materials have been hampered by the lack of real time and accelerated degradation data that can be correlated with in-use conditions. In 1977, the Solar Collector Reliability/Durability Test Program was initiated by the US Department of Energy at the National Bureau of Standards (NBS) to help generate the data required to develop methods for predicting the long term durability and reliability of flat-plate solar collectors and their materials. This paper summarizes the results obtained in the test program for full-size solar collectors. Recommendations are made regarding the use and limitations of thermal performance measurements and environmental exposure tests for assessing the durability of flat-plate solar collectors.
5
Siregar, Master, and Arvin Maulana Hutama. "Aplikasi Manajemen Tagihan Berbasis Mobile Dengan Menggunakan Metode Waterfall (Studi Kasus Pada PT.Wiratama Cemerlang)." Jurnal Inovasi Informatika 6, no. 1 (March 31, 2021): 40–49. http://dx.doi.org/10.51170/jii.v6i1.152.
Full textAbstract:
At PT. Wiratama Cemerlang, Finance and Collector Department are two parts of the company whose work is related to one another. Where the Finance Department will record and provide a list of jobs for the Collector Department. And the Collector Department will do the work provided by the Finance Department. However, in the process, this work sequence is still using offline method and also has not used technology that can be a place to facilitate information between the two Departments. “Manajemen Tagihan” is a mobile-based job recording application that was built using the Waterfall method for the Finance and Collector Department of PT. Wiratama Cemerlang. This application is useful for both Department because there are two Menu’s that can help both Department dong their work. In this application the Finance Department can record and spread the list of jobs and view reports of job status through jobs reports. And the Collector Department can take the jobs and update the status of job immediately after doing the work so that Finance Department can find out the status of the work being done by the Collector Department
6
Tunik, Alexander, and Mikhail Tolstoy. "Hydraulic optimization of the flat solar collectors SUN 1 and the temperature gradient of the heat carrier in a system of connected solar units." MATEC Web of Conferences 212 (2018): 02007. http://dx.doi.org/10.1051/matecconf/201821202007.
Full textAbstract:
The article presents an analytical method for selecting the optimal technical performance of the heat exchanger for a flat solar collector, using meander-shaped heat-sensing tubes, which allow obtaining a higher value of the coolant temperature at the exit from the flat solar collector. Also, the article presents a technique for determining the temperature of the coolant at the exit from a flat solar collector and the possibility of its application in the design of solar heating systems. This technique will allow to determine the optimum and the maximum possible number of successively connected flat liquid helium collectors and, accordingly, to obtain effective design and technical solutions. The technique is based on the use of the empirical dependence of the coolant’s temperature in the outlet branch pipe of a flat solar collector on the length of its heat-sensing tubes. The technique has been successfully applied in the study of heat-mass transfer processes in a new model of a flat solar collector being developed at the Department of Engineering Communications and Life Support Systems of the Irkutsk National Research Technical University. A comparative analysis of the measured values of the coolant temperature in the outlet branch pipe of the investigated reservoir with the values calculated using the empirical dependence presented in the article actually confirmed the adequacy of the presented technique with reference to one solar collector. The article shows results of calculating a system of consecutively connected collectors, which was conducted using the aforementioned technology.
7
Silaban, Marlis, and Yusmidiarti Yusmidiarti. "PENGGUNAAN ALAT PELINDUNG DIRI (APD) DAN LAMA KERJA PADA KEJADIAN KECELAKAAN KERJA PENGUMPUL SAMPAH." JURNAL MEDIA KESEHATAN 7, no. 1 (November 13, 2018): 82–87. http://dx.doi.org/10.33088/jmk.v7i1.228.
Full textAbstract:
Based on the results of the data obtained from the Parks Department and the Health of Bengkulu in 2013 produced garbage 291 m3/day. and the number of officers in the waste collection market Bengkulu City numbered 40 officers of garbage collectors. The purpose of this research was to determine the relationship of the application of personal protective equipment and length of employment with the incidence of occupational accidents in the garbage collector. This research used an analytical survey research methods, with a cross-sectional design. The sample was a total sampling of 40 people. Analysis used chi square with α = 0.05. The results showed no significant relationship between the application of personal protective equipment in work accident at a garbage collector (p=0.034 and OR=7.46) and there were a significant relationship between length of employment with the incidence of occupational accidents at waste collection (p=0.001 and OR=37.50).
8
Maraseni T, N., J. Maroulis, and G. Cockfield. "An estimation of willingness to pay for asparagus (Asparagus racemosus Willd.) collectors in Makawanpur District, Nepal." Journal of Forest Science 54, No. 3 (March 18, 2008): 131–37. http://dx.doi.org/10.17221/3099-jfs.
Full textAbstract:
The collection and sale of asparagus (<I>Asparagus racemosus</I> Willd.) is a major source of income for Praja and Tamang castes around the Royal Chitwan National Park (RCNP) in Nepal. However, the forests where asparagus is harvested are becoming depleted threatening the livelihood of collectors. To address this issue, at sustainable harvesting practices, the research reported here applied the contingent valuation method (bidding game) and estimated the average willingness to pay (WTP) of collectors to two asparagus collection scenarios. In the first scenario, if forests under the Department of Forests jurisdiction were managed for sustainable harvesting at 1995 rates, the average WTP of collectors was 4.4 NR/kg. In the second scenario, if the forest in the RCNP is managed in such a way that both the current harvesting rate of asparagus is sustained and they are legally allowed to collect asparagus at the present rate, the average WTP of collectors was 8.35 NR/kg. Consequently, there is a good chance of earning revenue for the government and sustaining the livelihood of asparagus dependents by the sustainable management of the Department’s and the National Park’s forests and giving legal permissions to collect asparagus from the National Park, which would have happened anyway but with financial and legal risks to collectors.
9
Klucher, Justin, Mrinmayee Lakkad, Jacob Painter, and Ryan K. Dare. "2013. Blood Culture Contamination in the Emergency Department: A Risk Factor Analysis." Open Forum Infectious Diseases 6, Supplement_2 (October 2019): S675—S676. http://dx.doi.org/10.1093/ofid/ofz360.1693.
Full textAbstract:
Abstract Background Blood cultures (BCx) guide treatment for hospitalized patients, yet contaminated BCx lead to clinical uncertainty, impacting care. The Clinical and Laboratory Standards Institute (CLSI) recommends contamination rates should be <3%, yet our Emergency Department (ED) rate is consistently above this benchmark. Reasons for this are unclear, thus it is imperative to investigate potential risk factors for BCx contamination. Methods We performed a retrospective case–control risk factor analysis of patients with BCx collected in our ED between 2014 and 2018. Contaminated BCx were identified by the microbiology laboratory per American Society of Microbiology recommendations. Demographics, comorbidities, and clinical characteristics were evaluated in patients with false-positive/contaminated BCx (cases) and patients with negative BCx (controls). Potential risk factors identified in univariate analysis were included in a logistic regression model. Unadjusted and adjusted analyses were performed using SAS 9.4. Results 25,668 BCx from 13,782 patients were included in analysis. 20,907 BCx from 11,266 (82%) patients were negative, 2,856 BCx from 1,504 (11%) patients were true positives, and 1,905 BCx from 1,012 (7%) patients were contaminated. Yearly ED contamination rates ranged from 5.0–9.3%. Collector contamination rates varied, though 38 (19%), 75 (35%), and 7 (3%) of 209 collectors had a contamination rate <3%, ≥ 10%, and ≥ 20%, respectively. Significant patient-specific risk factors identified in univariate analysis are listed in the attached table along with adjusted analysis. Conclusion In our analysis, we identified that older age, African American race, higher BMI, COPD, paralysis, and presenting in septic shock independently increases risk of having a contaminated BCx. Difficulty obtaining venipuncture in patients with these risk factors, often requiring multiple collection attempts, likely leads to decreased sterile technique. It is imperative to have a process assuring sterile technique in these high-risk individuals to minimize consequences associated with having a false-positive BCx result in these high-risk patients. Additionally, variable collector contamination rates seen in this study highlight the necessity for frequent technique in-service training. Disclosures All authors: No reported disclosures.
10
Tanuma, Yapet. "Analisis Pengaruh Piutang Tak Tertagih Terhadap Profitabilitas Pada Perusahaan CV. Anugrah Sriwijaya Sukses." Jurnal Bisnis, Manajemen, dan Ekonomi 1, no. 1 (September 5, 2020): 41–55. http://dx.doi.org/10.47747/jbme.v1i1.24.
Full textAbstract:
This study aims to analyse the effect of the ratio of arrears and collectors to return on assets at CV Anugrah Sriwijaya Sukses. This research is descriptive quantitative. Data were obtained through interviews with company leaders and employees related to the finance department and looking at financial report data for the 2017-2019 period. Data were collected using purposive sampling method and analysed using multiple linear regression. The findings evidence that partially, arrears have an effect on return on assets, and the ratio of collectors has no effect on return on assets. Simultaneously, the ratio of arrears and collectors simultaneously have a positive and significant effect on return on assets at CV Anugrah Sriwijaya Sukses.
Books on the topic "Collector's Department"
2
San Francisco (Calif.). Office of the Controller. City Services Auditor Division. Board of Supervisors: Reviews of department head transitions at seven City departments. San Francisco: Office of the Controller, 2006.
Find full text
3
Greenbook (Firm). Greenbook guide to Department 56: Including the original Snow Village, The Heritage Village collection & Snowbabies. East Setauket, N.Y: Greenbook, 1991.
Find full text
4
Greenbook (Firm). The fifth Greenbook guide to Department 56 villages: The Original Snow Village, the Heritage Village Collection ... & accessories. 5th ed. East Setauket, NY: Greenbook, 1995.
Find full text
5
Frost, Piatti Sandra, ed. Firefighting toys, 1940s-1990s. Atglen, PA: Schiffer Pub., 2005.
Find full text
6
Dubb, Asher. Asher's anthology: A selection of his writing. Johannesburg: Unacel Publishers, 2004.
Find full text
8
1953-, Potts Richard, and Smithsonian Books (Publisher), eds. The Old World Paleolithic and the development of a national collection. Washington, D.C: Smithsonian Contributions and Studies Series, 2004.
Find full text
9
Department 56 Village Collector's Value Guide: 1998 (Collector's Value Guides). 3rd ed. Collectors' Publishing Company, 1998.
Find full text
10
Department 56 Villages 2000 Collector's Value Guide. 5th ed. CheckerBee Publishing, 2000.
Find full textBook chapters on the topic "Collector's Department"
1
De Romanis, Federico. "Dramatis Personae." In The Indo-Roman Pepper Trade and the Muziris Papyrus, 298–320. Oxford University Press, 2020. http://dx.doi.org/10.1093/oso/9780198842347.003.0017.
Full textAbstract:
This concluding chapter identifies the two co-signatories of the loan contract. The manager of the department charged with levying customs duties on Indian commodities (paralemptes) was also the lender of the loan contract written on the recto of the Muziris papyrus. In all likelihood, the borrower was the owner of the Hermapollon. However, the cargo imported from Muziris was so enormous that it could hardly have belonged to a single merchant, as the loan contract—signed by a single borrower—seems to suggest. In all likelihood, the underwriter, a lone Indian Ocean ship owner (naukleros Erythraikos), represented also the Indian Ocean merchants (emporoi Erythraikoi) who chartered transport space on his ship. The Muziris papyrus lays bare the terms of a cooperative arrangement between the paralemptes and the naukleros, which may have been a structural peculiarity of Roman trade with India in the first two centuries AD. Above the merchants/borrowers and customs collectors/lenders is the imperial administration, whose officers assist and monitor the arabarchs’ work.
2
F. Seminario, Juan, S. Berardo Escalante, Rosel Orrillo-Mejía, and Karina Malca-Quiroz. "Collection, Storage and Market of Medicinal Plants: A Case in Peru." In Alternative Medicine [Working Title]. IntechOpen, 2020. http://dx.doi.org/10.5772/intechopen.94039.
Full textAbstract:
There are few studies on the collection and market of medicinal plants in South America and particularly in Peru. Through a review of secondary sources, information is gathered on the use and market of medicinal plants, and information is provided on the collection, collection and market of medicinal plants in the department of Cajamarca, focused on a chain of value of fresh plants (57 species) and another of dry plants (37 species), which mainly supply coastal markets. It is also reported on the collection in the first months of the COVID19 pandemic. The species come mainly from the Quechua region (2300 to 3500 masl), 51% are wild and the others are cultivated or weeds. Its main threats are mining, agricultural expansion, overgrazing, burning of natural vegetation, and over-harvesting. The monetary value of these plants is approximately US $ 804,333.64/year. In the first months of COVI19, the demand for eucalyptus, matico, chamomile and husk increased, mainly, and prices rose by more than 200%. Value chains are informal, they add minimal value to products, with the predominance of the interest of wholesale collectors.
3
Krutova, Marina S. "Information on the study of ancient Slavic monuments of writing in the mid-19th century in the correspondence of Spiridon Palauzov and Aleksey Viktorov." In Literary process in Russia of the 18 th — 19 th centuries. Secular and spiritual literature, 465–79. А.M. Gorky Institute of World Literature of the Russian Academy of Sciences, 2020. http://dx.doi.org/10.22455/lit.pr.2020-2-465-479.
Full textAbstract:
Letters of 1869–1872 of the famous figure of the Bulgarian Renaissance Spiridon Nikolayevich Palauzov to the outstanding researcher and collector of manuscript books Aleksey Yegorovich Viktorov, stored in the Russian State Library’s manuscripts department, are published in full for the first time. The value of these epistolary documents for Russian and Slavic literature of the 19th century lies in the fact that they contain little-known information on the history of research, attribution and publication of handwritten monuments such as “The Life and Praise of Saint Philothei of Athens”, “The Commendation of Saint Euthymius of Tarnovo” by Gregory Tsamblak, the Service of Holy Venerable Theodosius of Tarnovo, and the writings of Saint Clement of Ohrid and Tsar Simeon I the Great, the Great Menaion Reader was compiled in the 1530s–1540s under the supervision of Metropolitan Macarius of Moscow, etc. An introductory article gives a brief description of the letters. The text of the epistolary documents is provided with historical, literary and real commentary.
4
Lasc, Anca I. "Epilogue: The presentness of historicism: the Musée centennal du mobilier et de la décoration and the legacy of proto-interior designers." In Interior decorating in nineteenth-century France, 227–34. Manchester University Press, 2018. http://dx.doi.org/10.7228/manchester/9781526113382.003.0007.
Full textAbstract:
The Epilogue charts the career of Georges Rémon, artistic grandchild of Pierre-Luc Cicéri. Rémon was an inventor of interior designs that took the historicist, themed aesthetic to a new level. Equally well-versed in revivalist and Art Nouveau interiors, Rémon also invented interior decorating schemes that paid lip service to the more recent political regimes of the nineteenth century (Second Republic style, Louis-Philippe style, Napoléon III style) as well as decorative settings in what would later become the Art Deco style. His workshop designed not only period rooms for the 1900 universal exhibition but also interiors of several ocean liners that brought the French aesthetic to America. His career is thus a perfect example of how the artistic output of upholsterers, cabinet-makers, architects, stage designers, illustrators, collectors and department store managers, directed towards the private interior, invented a “system,” which saw that unity and harmony, as expressed through one main theme and coordinated by the same person, would guide the design of each interior. Without the invention of this “system,” the twentieth-century profession of the interior designer might never have been born.
Conference papers on the topic "Collector's Department"
1
Zhu, Guangdong, Mike Wagner, Tim Wendelin, and Chuck Kutscher. "Performance Evaluation and Outlook of Utility-Scale Linear Fresnel Technology." In ASME 2013 7th International Conference on Energy Sustainability collocated with the ASME 2013 Heat Transfer Summer Conference and the ASME 2013 11th International Conference on Fuel Cell Science, Engineering and Technology. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/es2013-18069.
Full textAbstract:
As one of the viable concentrating solar power (CSP) technologies, linear Fresnel collectors differ from parabolic troughs by virtue of their low-profile mirror arrays and fixed receiver assemblies. This technology is capable of achieving high concentration ratios and so is applicable to high-temperature solar power plant designs. In addition, its low wind profile and linear nature lead to low system and operation and maintenance (O&M) costs. In this report two linear Fresnel solar plant configurations, namely a direct steam generation (DSG) system and a direct high-temperature molten-salt plant, are examined via a levelized cost of electricity (LCOE) analysis. By treating LCOE as a function of the annual investment energy return (IER, or the ratio of annual net electricity to the total direct system cost) under various assumptions of O&M cost, a few plant scenarios employing high-temperature linear Fresnel technology are carefully configured to meet the aggressive LCOE goals of 8 cents/kWh and 6 cents/kWh. The latter is the Department of Energy (DOE) SunShot Initiative goal aimed at making CSP cost competitive in the current energy market. In particular, a linear Fresnel scenario with the potential to meet the SunShot goal is featured with a collector cost of $100/m2, an annual system energy efficiency of 18%, a storage system cost of $15/kWh-th, and an O&M cost of $7.5/MWh. One of the most aggressive assumptions is an advanced power block with about 52% cycle efficiency and a turbine inlet temperature of 700°C. This work addresses unanswered questions regarding linear Fresnel cost and performance and identifies future research and development directions for linear Fresnel technology, including economic optimization of collectors and receivers, development of physical plant performance models, development of automated O&M mechanisms and sophisticated plant control software.
2
Rochau, G., J. Cash, D. King, C. Morrow, D. Seidel, S. Slutz, S. Anghaie, et al. "An Overview of the Direct Energy Conversion Power Production Program." In 10th International Conference on Nuclear Engineering. ASMEDC, 2002. http://dx.doi.org/10.1115/icone10-22478.
Full textAbstract:
The United States Department of Energy, Nuclear Energy Research Initiative (NERI) Direct Energy Conversion (DEC) project has as its goal the development of a direct energy conversion process suitable for commercial development. We define direct energy conversion as any fission process that returns usable energy without an intermediate thermal process. Enough of the project has been completed, roughly two thirds, to indicate that a viable direct energy device is possible. This paper reports on the progress of the DEC project. Three concepts are under development: Fission Electric Cell using magnetic insulation, Magnetic Collimator using magnetic fields to direct fission fragments to collectors, and Gas Vapor Core Reactor using magnetohydrodynamics to generate electrical current. Included in this paper area a short project description, an abbreviated summary of the work completed to date, a description of ongoing and future project activities, and a discussion of the potential for future research and development.
3
King, D., G. Rochau, D. Oscar, C. Morrow, P. Tsvetkov, R. Hart, and R. Gallix. "An Overview of the Direct Energy Conversion Proof of Principle Power Production Program." In 12th International Conference on Nuclear Engineering. ASMEDC, 2004. http://dx.doi.org/10.1115/icone12-49458.
Full textAbstract:
The United States Department of Energy, Nuclear Energy Research Initiative (NERI) Direct Energy Conversion Proof of Principle (DECPOP) project has as its goal the development of a direct energy conversion process suitable for commercial development. We define direct energy conversion as any fission process that returns usable energy without an intermediate thermal process. A prior Direct Energy Conversion (DEC) project [1] has been completed and indicates that a viable direct energy device is possible if several technological issues can be overcome. The DECPOP program is focusing on two of the issues: charged particle steering and high voltage hold-off. This paper reports on the progress of the DECPOP project. Two prototype concepts are under development: a Fission Electric Cell using magnetic insulation and a Fission Fragment Magnetic Collimator using magnetic fields to direct fission fragments to collectors. Included in this paper are a short project description, an abbreviated summary of the work completed to date, a description of ongoing and future project activities, and a discussion of the potential for future research and development.
4
Barnes, Benjamin P., Luis A. Martinez, Trishan Esram, Ty A. Newell, and Patrick L. Chapman. "Design, Simulation and Preliminary Results of an All Electric Net-Zero Energy Solar Home." In ASME 2008 2nd International Conference on Energy Sustainability collocated with the Heat Transfer, Fluids Engineering, and 3rd Energy Nanotechnology Conferences. ASMEDC, 2008. http://dx.doi.org/10.1115/es2008-54327.
Full textAbstract:
This paper describes the mechanical systems, the DC-coupled electrical system, the simulation approach and the preliminary results of the University of Illinois entry in the 2007 Department of Energy Solar Decathlon competition. The competition showcased twenty net-zero energy solar powered houses. The University of Illinois entry was the only one that featured an all-electric design. No solar thermal collectors were used; space and water heating was accomplished primarily through heat pumps. Each of three house modules is sensibly conditioned with autonomous, custom mini-split heat pumps using all radiant and natural convection heat exchange for the interior side. Simulation methods are described and assumptions of wall and window properties, mechanical system performance and electrical system performance are disclosed. Details are provided on the theoretical analysis of internal heat transfer and the basic design of the custom mechanical system. The electrical system topology and equipment choices are presented and initial performance results are shown. Additionally, preliminary analysis is carried out on the data taken during the Solar Decathlon competition and on the observations of post-competition winter performance. The success in being awarded comfort conditioning points during the competition is discussed along with drawbacks not represented in the competition results.
5
Fumo, N., V. Bortone, and J. C. Zambrano. "Comparative Analysis of Solar Thermal Cooling and Solar Photovoltaic Cooling Systems." In ASME 2011 5th International Conference on Energy Sustainability. ASMEDC, 2011. http://dx.doi.org/10.1115/es2011-54162.
Full textAbstract:
The Energy Information Administration of the United States Department of Energy projects that more than 80% of the energy consumption of the U.S. by 2035 will come from fossil fuels. This projection should be the fuel to promote projects related to renewable energy in order to reduce energy consumption from fossil fuels to avoid their undesirable consequences such as carbon dioxide emissions. Since solar radiation match pretty well building cooling demands, solar cooling systems will be an important factor in the next decades to meet or exceed the green gases reduction that will be demanded by the society and regulations in order to mitigate environmental consequences such as global warming. Solar energy can be used as source of energy to produce cooling through different technologies. Solar thermal energy applies to technology such as absorption chillers and desiccant cooling, while electricity from solar photovoltaic can be used to drive vapor compression electric chillers. This study focuses on the comparison of a Solar Thermal Cooling System that uses an absorption chiller driven by solar thermal energy, and a Solar Photovoltaic Cooling System that uses a vapor compression system (electric chiller) driven by solar electricity (solar photovoltaic system). Both solar cooling systems are compared against a standard air cooled cooling system that uses electricity from the grid. The models used in the simulations to obtain the results are described in the paper along with the parameters (inputs) used. Results are presented in two figures. Each figure has one curve for the Solar Thermal Cooling System and one for the Solar Photovoltaic Cooling System. One figure allows estimation of savings calculated based the net present value of energy consumption cost. The other figure allows estimating primary energy consumption reduction and emissions reduction. Both figures presents the result per ton of refrigeration and as a function of area of solar collectors or/and area of photovoltaic modules. This approach to present the result of the simulations of the systems makes these figures quite general. This means that the results can be used to compare both solar cooling systems independently of the cooling demand (capacity of the system), as well as allow the analysis for different sizes of the solar system used to harvest the solar energy (collectors or photovoltaic modules).
6
Mazumder, Malay K., Mark N. Horenstein, Jeremy W. Stark, John N. Hudelson, Arash Sayyah, Nitin Joglekar, Julius Yellowhair, and Adam Botts. "Self-Cleaning Solar Mirrors Using Electrodynamic Dust Shield: Prospects and Progress." In ASME 2014 8th International Conference on Energy Sustainability collocated with the ASME 2014 12th International Conference on Fuel Cell Science, Engineering and Technology. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/es2014-6696.
Full textAbstract:
Parabolic trough and power tower technologies provide inherent advantage of thermal energy storage and high efficiency of the Concentrating Solar Power (CSP) systems for utility scale solar plants. High efficiency CSP power generation with minimal water use is one of the SunShot goals of the US Department of Energy. The specular reflectance efficiency of the solar mirrors plays a critical role in the efficiency of power generation. The optical surface of the mirrors and the receiver must be kept clean for efficient operation of the plant. Some environmental challenges in operating the large-scale CSP plants at high reflectance efficiency arise from high concentration of atmospheric dust, wind speed and variation of relative humidity (RH) over a wide range. Deposited dust and other contaminant particles, such as soot, salt, and organic particulate matters attenuate solar radiation by scattering and absorption. Adhesion of these particles on the mirror surface depends strongly by their composition and the moisture content in the atmosphere. Presence of soluble inorganic and organic salts cause corrosion of the mirror unless the contaminants are cleaned frequently. In this paper, we briefly review (1) source of atmospheric dust and mechanisms involved in degradation of mirrors caused by salt particles, (2) loss of specular reflection efficiency as a function of particle size distribution and composition, and (3) an emerging technology for removing dust layer by using thin transparent electrodynamic screen (EDS). Feasibility of integration of EDS on the front surface of the solar collectors has been established to provide active self-cleaning properties for parabolic trough and heliostat reflectors. Prototype EDS-integrated solar collectors including second-surface glass mirrors, metallized acrylic film mirrors, and dielectric mirrors, were produced and tested in an environmental test chambers simulating desert atmospheres. The test results show that frequent removal of dust layer can maintain the specular reflectivity of the mirrors above 90% under dust deposition at a rate ranging from 0 to 10 g/m2, with particle size varying from 1 to 50 μm in diameter. The energy required for removing the dust layer from the solar was less than 10 Wh/m2 per cleaning cycle. EDS based cleaning could therefore be automated and performed as frequently as needed to maintain reflection efficiency above 90% and thus reducing water usage for cleaning mirrors in the solar field. A comparative cost analysis was performed between EDS and deluge water based cleaning that shows the EDS method is commercially viable and would meet water conservation needs.
7
Holloway, Paul, Raymond O'Connor, Denis Linehan, and Therese Kenna. "Digital (Urban) Geography: Student-led research methodology training using smartphone apps." In Learning Connections 2019: Spaces, People, Practice. University College Cork||National Forum for the Enhancement of Teaching and Learning in Higher Education, 2019. http://dx.doi.org/10.33178/lc2019.30.
Full textAbstract:
In the last decade, opportunities have emerged to deploy new digital technologies to research agendas and research-led teaching at third level. For instance, research methods such as surveys and questionnaires are shifting into the digital environment, while at the same time there is increasing evidence to support the view that people who have grown up with technology have acquired distinctive new ways of learning, and that traditional methodologies fail to maximise student engagement (Lafuente 2018). Thompson (2013) suggests that these ‘new learners’ are constantly using technology, multi-tasking in interactive environments, and collaborating online, yet research shows that many students are unaware of the potential of their smartphone to support learning (Woodcock et al, 2012). Despite a widespread interest in mobile devices facilitating teaching and learning in third-level education geography departments (Welsh et al. 2013), many research techniques are still taught using traditional ‘pen-and-paper’ methodologies. The ESRI Collector for ArcGIS is a mobile application (app) that can be used with iOS, Android, and Windows smartphones. Collector for ArcGIS is beginning to emerge as a technology to support spatial thinking in geography at second-level education and third-level education (Pánek and Glass 2018). Here we report on our strategy of integrating mobile technology in GG1015 Applied Geography, a large (250+) class introducing first year BA Arts Geography programme students to a number of techniques that we use in Geography. This module sits between GG1013 Environmental Geography and GG1014 Society and Space in the first-year programme. Both of these modules are a block of 24 1-hour lectures, with multiple choice quizzes (MCQs) and essay-based exams. Subsequently, GG1015 was developed to compliment these modules and introduce different teaching styles that facilitate learning across a range of diversities. Throughout this module, students engage directly in fieldwork, photographic activities, essay writing, presentations, and small group work. As such, this module offers an excellent case study to explore new techniques to engage students in learning, particularly in geographic research.
8
Torcellini, Paul, Shanti Pless, Chad Lobato, and Tom Hootman. "Main Street Net-Zero Energy Buildings: The Zero Energy Method in Concept and Practice." In ASME 2010 4th International Conference on Energy Sustainability. ASMEDC, 2010. http://dx.doi.org/10.1115/es2010-90225.
Full textAbstract:
Until recently, large-scale, cost-effective net-zero energy buildings (NZEBs) were thought to lie decades in the future. However, ongoing work at the National Renewable Energy Laboratory (NREL) indicates that NZEB status is both achievable and repeatable today. This paper presents a definition framework for classifying NZEBs and a real-life example that demonstrates how a large-scale office building can cost-effectively achieve net-zero energy. The vision of NZEBs is compelling. In theory, these highly energy-efficient buildings will produce, during a typical year, enough renewable energy to offset the energy they consume from the grid. The NREL NZEB definition framework classifies NZEBs according to the criteria being used to judge net-zero status and the way renewable energy is supplied to achieve that status. We use the new U.S. Department of Energy/NREL 220,000-ft2 Research Support Facilities (RSF) building to illustrate why a clear picture of NZEB definitions is important and how the framework provides a methodology for creating a cost-effective NZEB. The RSF, scheduled to open in June 2010, includes contractual commitments to deliver a Leadership in Energy Efficiency and Design (LEED) Platinum Rating, an energy use intensity of 25 kBtu/ft2 (half that of a typical LEED Platinum office building), and net-zero energy status. We will discuss the analysis method and cost tradeoffs that were performed throughout the design and build phases to meet these commitments and maintain construction costs at $259/ft2. We will discuss ways to achieve large-scale, replicable NZEB performance. Many passive and renewable energy strategies are utilized, including full daylighting, high-performance lighting, natural ventilation through operable windows, thermal mass, transpired solar collectors, radiant heating and cooling, and workstation configurations allow for maximum daylighting. This paper was prepared by the client and design teams, including Paul Torcellini, PhD, PE, Commercial Building Research Group Manager with NREL; Shanti Pless and Chad Lobato, Building Energy Efficiency Research Engineers with NREL; David Okada, PE, LEED AP, Associate with Stantec; and Tom Hootman, AIA, LEED AP, Director of Sustainability with RNL.
9
Walker, Andy, Chuck Kutscher, Al Halvorsen, Chris McKenna, Dave Chambers, and Ken May. "Design and Analysis of a Large Solar Industrial Heat Plant for Frito Lay in Modesto California." In ASME 2007 Energy Sustainability Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/es2007-36050.
Full textAbstract:
Industry-specific technology demonstration projects are key to facilitating deployment of solar industrial process heat technologies. Frito Lay North America (FLNA) is pursuing installation of a solar industrial process heat plant at the manufacturing plant in Modesto CA. FLNA contracted with Industrial Solar Technology Corp. for design and installation of the system and with National Renewable Energy Lab for technical assistance. The US Department of Energy and California Energy Commission both facilitate private companies implementation of technology demonstration projects with incentives, tax policy, and technical assistance. The solar plant would include: 5,387 m2 (57,969 sf) of parabolic trough solar collectors; pipe from solar array to unfired steam generator; unfired steam generator (USG); hot water heat exchanger (HWHX); pipe from hot water heat exchanger back to array field; and associated pumps, bypass piping, and controls. Performance of each component of the solar heating system varies with changing conditions of intensity of the sunlight, position of the sun, and ambient temperature. Since each of these parameters change throughout the day and throughout the seasons an hourly simulation of one year’s performance is performed. The simulation is used to estimate annual energy delivery as well as to inform design recommendations. The solar array inlet temperature is solved for iteratively for each hour of the year based on an energy balance of the entire loop including all components. Nested within this iteration are iterations for the operating temperature of each of the 16 modules in series. Hourly direct beam solar radiation (W/m2) data for Modesto CA for 8 years from 1998–2005 was provided by the National Renewable Energy Laboratory Renewable Resource Data Center and the minimum year, average year, and maximum year were used in the analysis. Results indicate that the system would deliver between 3,898 MWh and 4,308 MWh per year (13.3 and 14.7 billion Btu/year) with an average of 4,044 MWh/year (13.8 billion Btu/year). This average estimate of 13.8 billion Btu/year agrees with the contractors proposal and also with methods described in the Industrial Process Heat Handbook published by NREL. The simulation is able to model more detail and inform design recommendations, such as bypassing the steam generator and only making hot water on winter days.
10
Howard, Nikia, Xiaofeng Guan, Ruth Ann Martin, Robert S. Dahlin, and E. Carl Landham. "Evaluation of Failsafe Performance for Hot Gas Filtration." In ASME Turbo Expo 2007: Power for Land, Sea, and Air. ASMEDC, 2007. http://dx.doi.org/10.1115/gt2007-27965.
Full textAbstract:
The Power Systems Development Facility (PSDF) is an engineering-scale demonstration facility of advanced coal-fired power systems and high-temperature, high-pressure gas filtration systems. The PSDF was designed at sufficient size so that system components can be evaluated and assessed in an integrated fashion to provide data for commercial scale-up. The PSDF is funded by the U.S. Department of Energy, the Electric Power Research Institute, Southern Company, Siemens Power Generation, Kellogg Brown & Root (KBR), Peabody Energy, Burlington Northern Santa Fe Corporation, and the Lignite Energy Council. Coal gasification at the PSDF is achieved with the KBR Transport Gasifier. Particulate laden gas exiting the gasifier is filtered by a downstream particulate control device (PCD). The PCD is a hot-gas filter that can hold up to 91 filter elements arranged in two tiers, with 36 elements in the top cluster and up to 55 elements in the bottom cluster. More than 30 different types of sintered metal powder, metal fiber, and ceramic filter elements have been tested. As of October 2006, the longest exposure of an individual element was approximately 8550 hours, which was achieved with a Pall iron aluminide sintered metal powder element. The outlet particle loading during normal operation has been reliably maintained within the lower limit of measurement resolution (routinely less than 0.1 ppmw). Downstream of each filter element is a failsafe device to prevent particulate leakage in the event of a filter element failure. The failsafe device is a small filter element or other type of particle collector and serves as a backup to the primary filter element. Demonstration of reliable failsafes is a critical factor in advancing hot gas filtration technology and increasing readiness for commercialization. A failsafe test program was developed at the PSDF to identify failsafe devices that would provide satisfactory protection of a gas turbine from particulate damage. In tests that simulated the failure of a single filter element, both metallic and ceramic failsafe devices were typically able to produce an outlet particle loading below 0.1 ppmw after an initial period of seasoning. From the overall particulate collection efficiency point of view, the failsafes tested showed promising results of protecting a gas turbine from being damaged by particles in the event of a filter failure. This paper focuses on failsafe performance and effectiveness in preventing particulate leaking through the PCD in the event of a filter element failure.