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1. |
Record Nr. |
UNINA9910709937803321 |
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Autore |
Kopetka Paul |
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Titolo |
NIST liquid hydrogen cold source / / P. Kopetka, R.E. Williams, J.M. Rowe |
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Pubbl/distr/stampa |
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[Gaithersburg, MD] : , : U.S. Dept. of Commerce, National Institute of Standards and Technology, , [2006] |
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Descrizione fisica |
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1 online resource (72 unnumbered pages) : illustrations |
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Collana |
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Altri autori (Persone) |
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RoweJ. Michael |
WilliamsR. E |
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Soggetti |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Note generali |
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"September 2006." |
Contributed record: Metadata reviewed, not verified. Some fields updated by batch processes. |
Title from page [1], viewed April 5, 2007. |
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Nota di bibliografia |
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Includes bibliographical references (pages 68-69). |
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Sommario/riassunto |
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Nearly two-thirds of the experiments performed at the NIST Center for Neutron Research (NCNR) utilize cold neutrons with wavelengths greater than 4 Angstroms. This report documents the development of the liquid hydrogen cold neutron source in the NIST research reactor. The source was designed to optimize the flux of cold neutrons transported to the scattering instruments in the guide hall. It was also designed to be passively safe, and operate simply and reliably. All hydrogen system components are surrounded with monitored helium containments to ensure that there are at least two barriers between the hydrogen and the atmosphere. Monte Carlo simulations were used to calculate the cold source performance and estimate the nuclear heat load at full reactor power. Thermal-hydraulic tests in a full-scale mockup at NIST Boulder confirmed that a naturally circulating thermosiphon driven by the 2 meter height of the condenser could easily supply the moderator vessel with liquid hydrogen while removing over 2000 watts. The cryostat assembly was designed to withstand any high pressure generated in a credible accident. It was fabricated to rigorous quality assurance standards, resulting in over 10 years of |
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2. |
Record Nr. |
UNINA9910788178103321 |
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Autore |
Herriott Scott R. |
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Titolo |
Feasibility analysis for sustainable technologies : an engineering-economic perspective / / Scott R. Herriott |
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Pubbl/distr/stampa |
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New York, New York (222 East 46th Street, New York, NY 10017) : , : Business Expert Press, , 2015 |
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ISBN |
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Edizione |
[First edition.] |
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Descrizione fisica |
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1 online resource (318 p.) |
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Collana |
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Environmental and social sustainability for business advantage collection, , 2327-3348 |
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Disciplina |
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Soggetti |
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Sustainable development - Management |
Feasibility studies |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Note generali |
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Description based upon print version of record. |
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Nota di bibliografia |
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Includes bibliographical references (pages 285-293) and index. |
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Nota di contenuto |
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1. Sustainable technologies -- 2. Capacity -- 3. Efficiency -- 4. Constraints -- 5. Dependability -- 6. Cost structure -- 7. Break-even analysis -- 8. Basic financial analysis of technology -- 9. Valuation of commercial projects -- 10. Accounting for environmental benefits -- Appendices -- About the author -- Notes -- References -- Index. |
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Sommario/riassunto |
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This book leads the reader into a professional feasibility analysis for a renewable energy or energy efficiency project. The analysis begins with an understanding of the basic engineering description of technology in terms of capacity, efficiency, constraints, and dependability. It continues in modeling the cash flow of a project, which is affected by the installed cost, the revenues or expenses avoided by using the technology, the operating expenses of the technology, available tax credits and rebates, and laws regarding depreciation and income tax. The feasibility study is completed by discounted cash flow analysis, using an appropriate discount rate and a proper accounting for inflation, to evaluate the financial viability of the project. The elements of this analysis are illustrated using numerous examples of solar, wind, and hydroelectric power, biogas digestion, energy storage, biofuels, |
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and energy-efficient appliances and buildings. |
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