Download or read book Analysis of Life Cycle Costs and Energy Savings of Electrochromic Glazing for an Office Building written by Kavish Prakash Munshi and published by . This book was released on 2012 with total page 79 pages. Available in PDF, EPUB and Kindle. Book excerpt: Building Envelope includes walls, roofs and openings, which react to the outdoor environmental condition. Today, with the increasing use of glass in building envelope, the energy usage of the buildings is increasing, especially in the offices and commercial buildings. Use of right glass type and control triggers helps to optimize the energy use, by tradeoff between optical and thermal properties. The part of the research looks at the different control triggers and its range that governs the use of electrochromic glass to regulate the energy usage in building. All different control trigger that can be possibly used for regulating the clear and tint state of glass were analyzed with most appropriate range. Its range was triggered such that 80% time of the glass is trigger between the ranges. The other building parameters like window wall ratio and orientations were also investigated. The other half of the research study looks into the feasibility of using the Electrochromic windows, as it is ought to be the main factor governing the market usage of Electrochromic windows and to investigate the possible ways to make it feasible. Different LCC parameters were studied to make it market feasible product. This study shows that installing this technology with most appropriate trigger range can reduce annual building energy consumption from 6-8% but still cost of the technology is 3 times the ASHRAE glass, which results in 70-90 years of payback. This study concludes that south orientation saves up to 3-5% of energy and 4-6% of cooling tons while north orientation gives negligible saving using EC glass. LCC parameters show that there is relative change in increasing the net saving for different parameters but none except 50% of the present glass cost is the possible option where significant change is observed.
Download or read book Energy Conservation Guidelines for Existing Office Buildings written by AIA Research Corporation and published by . This book was released on 1977 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Life cycle Cost Analysis of Energy Conservation Investments in Public Buildings written by and published by . This book was released on 1981 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Life cycle Costing written by Rosalie T. Ruegg and published by . This book was released on 1978 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Comprehensive Study on Electrochromic Glazing Versus Conventional Shading Device in the Context of Energy Efficiency written by Sanaz Amindeldar and published by . This book was released on 2018 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study is focused on a comparative simulation-based energy performance assessment of conventional shading devices and electrochromic glazing (EC) in an office building in hot climate. Seven fixed exterior shading devices and four EC glazing alternatives have been modeled in EnergyPlus and the energy saving potential of them has been compared in South, East and West orientation. The results indicate that different levels of energy saving (in heating, cooling and electrical lighting) can be reached using each alternative scenario, which also varies by orientation. EC glazing can provide either considerable saving or waste in different orientations which is highly dependent on the control strategy. The comprehensive analysis provided in this thesis helps designers choose among the alternatives with an understanding of energy efficiency according to their criteria of concern.
Download or read book Life cycle costing emphasizing energy conservation written by Reynolds, Smith and Hills and published by . This book was released on 1976 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Opportunities and Life Cycle Energy Impacts of High performance Windows in Reducing Energy Use in Residential Buildings written by Negar Ashrafi and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Today's energy-efficient windows can dramatically lower heating and cooling costs associated with windows while increasing occupant comfort. However, consumers are often confused about how to select the most efficient window for a residence. Furthermore, how this efficiency is defined is another problem that needs to be addressed.Energy consumption is a scale that is used for defining energy efficiency. In most cases, the amount of energy that is used during the products service life (operational energy) will be measured as the total energy consumption of the product. However, the amount of energy that is used for producing a product is also as much important as operational energy, which should be taken into consideration.In this thesis, it was attempted to provide useful recommendations for selecting the most efficient window glazing systems with regard to their overall energy consumption, using a Life-Cycle Energy Analysis (LCEA) method. The effect of using thirteen (13) different commonly used types of glazing systems on the annual energy use for a residential building was compared in various climate conditions across the U.S. Moreover, the amount of energy required for producing these glazing systems were identified. The results obtained from the analyses of these two phases of the study was used to create a simple set of guidelines, which can be utilized to select the most efficient glazing systems in terms of overall energy consumption based on different climate condition.
Download or read book An Exploratory Energy Analysis of Electrochromic Windows in Small and Medium Office Buildings written by and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The Department of Energy's (DOE) Building Technologies Program (BTP) has had an active research program in supporting the development of electrochromic (EC) windows. Electrochromic glazings used in these windows have the capability of varying the transmittance of light and heat in response to an applied voltage. This dynamic property allows these windows to reduce lighting, cooling, and heating energy in buildings where they are employed. The exploratory analysis described in this report examined three different variants of EC glazings, characterized by the amount of visible light and solar heat gain (as measured by the solar heat gain coefficients [SHGC] in their "clear" or transparent states). For these EC glazings, the dynamic range of the SHGC's between their "dark" (or tinted) state and the clear state were: (0.22 - 0.70, termed "high" SHGC); (0.16 - 0.39, termed "low" SHGC); and (0.13 - 0.19; termed "very low" SHGC). These glazings are compared to conventional (static) glazing that meets the ASHRAE Standard 90.1-2004 energy standard for five different locations in the U.S. All analysis used the EnergyPlus building energy simulation program for modeling EC windows and alternative control strategies. The simulations were conducted for a small and a medium office building, where engineering specifications were taken from the set of Commercial Building Benchmark building models developed by BTP. On the basis of these simulations, total source-level savings in these buildings were estimated to range between 2 to 7%, depending on the amount of window area and building location.
Download or read book Materials Selection for Sustainability in the Built Environment written by Assed N. Haddad and published by Elsevier. This book was released on 2024-02-13 with total page 554 pages. Available in PDF, EPUB and Kindle. Book excerpt: Materials Selection for Sustainability in the Built Environment: Environmental, Social and Economic Aspects presents the current state-of-the-art when it comes to the decision-making process for choosing construction materials to deliver sustainable construction projects. Aspects covered include the science of enhanced decision-making via operational research and machine learning techniques and how this can be implemented in various disciplines such as architecture, engineering and construction. To this end, the book discusses environmental, economic and social aspects in assessing construction materials and presents different tools and methods that can benefit and facilitate this process. Finally, the book reviews previous publications on construction material selection and presents essential discussions on the role professionals, researchers, contractors and governments play in making more sustainable decisions on the built environment. Presents a lifecycle management-based, systematic and integrated approach for sustainable construction materials selection Discusses the impact of materials selection, covering every aspect of sustainability (environmental, social and economic aspects) Looks at the concept of the circular economy Provides case studies on decision-making methods in combination with lifecycle sustainability assessments
Download or read book Energy Performance Analysis of Prototype Electrochromic Windows written by and published by . This book was released on 1996 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper presents the results of a study investigating the energy performance of three newly developed prototype electrochromic devices. The DOE-2.1 E energy simulation program was used to analyze the annual cooling, lighting, and total electric energy use and peak demand as a function of window type and size. The authors simulated a prototypical commercial office building module located in the cooling-dominated locations of Phoenix, AZ and Miami, FL. Heating energy use was also studied in the heating-dominated location of Madison, WI. Daylight illuminance was used to control electrochromic state-switching. Two types of window systems were analyzed; i.e., the outer pane electrochromic glazing was combined with either a conventional low-E or a spectrally selective inner pane. The properties of the electrochromic glazings are based on measured data of new prototypes developed as part of a cooperative DOE-industry program. The results show the largest difference in annual electric energy performance between the different window types occurs in Phoenix and is about 6.5 kWh/m2 floor area (0.60 kWh/ft2) which can represent a cost of about $.52/m2 ($.05/ft2) using electricity costing $.08/kWh. In heating-dominated locations, the electrochromic should be maintained in its bleached state during the heating season to take advantage of beneficial solar heat gain which would reduce the amount of required heating. This also means that the electrochromic window with the largest solar heat gain coefficient is best.
Download or read book Electrochromic Materials and Devices written by Roger J. Mortimer and published by John Wiley & Sons. This book was released on 2015-10-26 with total page 668 pages. Available in PDF, EPUB and Kindle. Book excerpt: Electrochromic materials can change their properties under the influence of an electrical voltage or current. Different classes of materials show this behavior such as transition metal oxides, conjugated polymers, metal-coordinated complexes and organic molecules. As the color change is persistent, the electric field needs only to be applied to initiate the switching, allowing for applications such as low-energy consumption displays, light-adapting mirrors in the automobile industry and smart windows for which the amount of transmitted light and heat can be controlled. The first part of this book describes the different classes and processing techniques of electrochromic materials. The second part highlights nanostructured electrochromic materials and device fabrication, and the third part focuses on the applications such as smart windows, adaptive camouflage, biomimicry, wearable displays and fashion. The last part rounds off the book by device case studies and environmental impact issues.
Download or read book Life Cycle Energy Savings in Office Building written by and published by . This book was released on 1998 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Tokyo Gas Kohoku NT Building, completed in March 1996, was built with the objective of achieving overall savings of energy and natural resources throughout the entire life cycle of the building, from construction to demolition. The building is expected to reduce primary energy consumption by 35% and lifecycle CO2 emissions by 25%. This was combined with the positive use of natural energy sources and the introduction of a cogeneration system with an absorption chiller-heater using waste heat as input for its generators. The life cycle costs are lower than those of conventional buildings.
Download or read book The Energy savings Potential of Electrochromic Windows in the UScommercial Buildings Sector written by Stephen Selkowitz and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Switchable electrochromic (EC) windows have been projected to significantly reduce the energy use of buildings nationwide. This study quantifies the potential impact of electrochromic windows on US primary energy use in the commercial building sector and also provides a broader database of energy use and peak demand savings for perimeter zones than that given in previous LBNL simulation studies. The DOE-2.1E building simulation program was used to predict the annual energy use of a three-story prototypical commercial office building located in five US climates and 16 California climate zones. The energy performance of an electrochromic window controlled to maintain daylight illuminance at a prescribed setpoint level is compared to conventional and the best available commercial windows as well as windows defined by the ASHRAE 90.1-1999 and California Title 24-2005 Prescriptive Standards. Perimeter zone energy use and peak demand savings data by orientation, window size, and climate are given for windows with interior shading, attached shading, and horizon obstructions (to simulate an urban environment). Perimeter zone primary energy use is reduced by 10-20% in east, south, and west zones in most climates if the commercial building has a large window-to-wall area ratio of 0.60 compared to a spectrally selective low-e window with daylighting controls and no interior or exterior shading. Peak demand for the same condition is reduced by 20-30%. The emerging electrochromic window with daylighting controls is projected to save approximately 91.5-97.3 10{sup 12} Btu in the year 2030 compared to a spectrally selective low-E window with manually-controlled interior shades and no daylighting controls if it reaches a 40% market penetration level in that year.
Download or read book Comprehensive Energy Systems written by Ibrahim Dincer and published by Elsevier. This book was released on 2018-02-07 with total page 5543 pages. Available in PDF, EPUB and Kindle. Book excerpt: Comprehensive Energy Systems, Seven Volume Set provides a unified source of information covering the entire spectrum of energy, one of the most significant issues humanity has to face. This comprehensive book describes traditional and novel energy systems, from single generation to multi-generation, also covering theory and applications. In addition, it also presents high-level coverage on energy policies, strategies, environmental impacts and sustainable development. No other published work covers such breadth of topics in similar depth. High-level sections include Energy Fundamentals, Energy Materials, Energy Production, Energy Conversion, and Energy Management. Offers the most comprehensive resource available on the topic of energy systems Presents an authoritative resource authored and edited by leading experts in the field Consolidates information currently scattered in publications from different research fields (engineering as well as physics, chemistry, environmental sciences and economics), thus ensuring a common standard and language
Download or read book An Investigation of Window and Lighting Systems Using Life Cycle Cost Analysis for the Purpose of Energy Conservation in Langford Building A at Texas A M University written by Hea Yeon Hwang and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Langford Building A forms part of the Langford Architectural Complex at Texas A & M University. Inefficient lighting fixtures and single pane windows in Langford Building A contribute to a considerable portion of the total cost of energy for this building. In the Southwestern United States, a building's windows can be responsible for a significant loss of energy. The windows and inefficient light bulbs can result in high utility costs and high labor charges from more frequent lighting maintenance than that required for efficient lighting. In Langford Building A, window system energy efficiency has not been improved since the building was constructed in 1977. This paper investigates the economic feasibility of using efficient lighting and window systems in Langford Building A. The cost for windows and new lighting tubes was analyzed and compared by using Life Cycle Cost Analysis. The payback periods, determined in this analysis, showed that more efficient lighting and window systems would reduce costs. As results of this analysis, the window film and LED lighting tube reduce building life cycle cost and short payback periods than other alternatives.
Download or read book Life cycle Cost Analysis of Energy Conservation Investments in Public Buildings written by California. Department of General Services and published by . This book was released on 1981 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Window Systems for High performance Buildings written by John Carmody and published by W W Norton & Company Incorporated. This book was released on 2004 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt: The challenge in designing facades and selecting windows in commercial buildings is balancing many issues and criteria. This fact-packed handbook outlines the basics of glazing selection and provides critical information and performance data on the energy efficiency, interior environment, technical, and life-cycle-cost considerations that drive window design decisions in commercial buildings.
