Natural Gas-electric Hybrid Cooling System for Army Facilities PDF Download

Author: Chang W. Sohn
Publisher:
ISBN:
Category : Air conditioning
Languages : en
Pages : 32

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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 31

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Book Description
Operation of space cooling equipment accounts for more than half of the annual peak electrical demand and a third of the total electrical energy consumed in a typical Army installation. As a means to reduce the peak electrical demand in kilowatts and electrical energy consumption in kilowatt-hours, a number of Army installations installed natural gas engine chillers during the 1990s through Congressional appropriations, the Federal Energy Management Program (FEMP), and installation operations and maintenance (O&M) funds. This report reviews field performance of these systems and provides a selection guide for cooling systems in the Army installations. Life-cycle cost analysis of chillers in three ranges of cooling capacity was conducted to determine the economical benefit of hybrid cooling systems. The capacity ranges are: less than 50 tons, 50-200 tons, and greater than 200 tons, which correspond to typical small administration buildings, barrack or large office buildings, and central cooling plant applications, respectively. The study results show that the electric-gas hybrid cooling system is recommended only when a favorable fuel cost rate is available for natural gas compared to electricity.

Author: Carl A. Feickert
Publisher:
ISBN:
Category : Buildings
Languages : en
Pages : 48

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Author: Gerald L. Cler
Publisher:
ISBN:
Category : Air conditioning
Languages : en
Pages : 95

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Author:
Publisher:
ISBN:
Category : Gas air conditioning
Languages : en
Pages : 31

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Author: Timothy W. Pedersen
Publisher:
ISBN:
Category : Energy conservation
Languages : en
Pages : 50

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Author: William T. Brown
Publisher:
ISBN:
Category : Energy conservation
Languages : en
Pages : 26

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High-efficiency gas-fired cooling equipment is readily available for commercial, institutional, and industrial facilities. Natural gas engine-driven chillers have higher coefficients of performance than any natural gas cooling system and can serve as energy efficient alternatives for new electric chillers. This study monitored the performance of natural gas cooling technologies operating at three Air Force bases during the fiscal year 1998 cooling season and compared the actual performance data to theoretical values. Energy and demand cost analyses were performed to compare each natural gas cooling technology with the energy and demand costs of old and new electric chillers. The study determined that, at the monitored bases, the costs for the natural gas used by the engine-driven chillers were lower than electrical costs used by old and new electric chillers, resulting in an energy cost savings.

Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 0

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Approximately one-third of all energy consumption and two-thirds of total energy expenditures at Department of Defense fixed facilities are electricity related. Electrical energy costs can be reduced by conserving electrical energy or by replacing electrical consuming devices with alternate fuel-driven mechanisms, e.g., by natural gas cooling. Use of state-of-the-art gas cooling technologies can reduce an installation's electric demand, provide domestic hot water, and lessen environmental impacts normally attributed to electric-driven chillers. This study evaluated absorption chillers, engine-driven chillers, and desiccant dehumidification systems as possible alternatives to electric cooling equipment at Air Force facilities. Site candidates were screened, economic costs/benefits analyses of applying gas cooling technologies at specific locations were done, and new equipment was purchased, installed, and tested at approved sites. Recommendations were made regarding the use of gas cooling technologies at Air Force facilities as a whole.

Author: National Academies of Sciences Engineering and Medicine
Publisher:
ISBN: 9780309258036
Category :
Languages : en
Pages :

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At the request of the Deputy Assistant Secretary of the Army for Research and Technology, Powering the U.S. Army of the Future examines the U.S. Army's future power requirements for sustaining a multi-domain operational conflict and considers to what extent emerging power generation and transmission technologies can achieve the Army's operational power requirements in 2035. The study was based on one operational usage case identified by the Army as part of its ongoing efforts in multi-domain operations. The recommendations contained in this report are meant to help inform the Army's investment priorities in technologies to help ensure that the power requirements of the Army's future capability needs are achieved.

Author: Chengshan Wang
Publisher: Elsevier
ISBN: 0323953506
Category : Technology & Engineering
Languages : en
Pages : 231

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Book Description
Microgrid Methodologies and Applications provides step-by-guide guidance on the implementation of microgrids projects that is informed by current scientific principles, emergent technologies such as modern power electronic interfaces, energy storage systems, multi-vector energy systems, and a close study of recent case studies. Addressing the full end-to-end microgrid project lifecycle, the work encompasses planning, design, operation, control, trading and evaluation, with a significant focus on novel business model, regulation and policy considerations. The book explains to readers how they can operationalize robust microgrids which account for engineering reality, uncertainties, and operating constraints. It delivers precise and rigorous real case studies for project managers, designers and policy and decision-makers. The methodologies section provides step-by-step guidance on implementing projects for postgraduate students, researchers and practitioners, while the applications section provides an array of demonstrative ‘case studies which exemplify the use of optimal methods and leading-edge technologies. Provides step-by-step guidance on the design, operation, control, trading and evaluation of microgrid projects Demystifies real-world project experience through the evaluation of successful case studies, novel data analysis and comprehensive evaluation rather than cumbersome mathematical formulations Combines theoretical and practical insights, serving to bridge gaps between theory and engineering operations, control and decision-making Reviews state-of-the-art topics including business models, trading strategies, pricing, regulatory standards and policy recommendations poised to profoundly affect local energy transitions and utilization of microgrids