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Author: John Carmody Publisher: W W Norton & Company Incorporated ISBN: 9780393731217 Category : Architecture Languages : en Pages : 400
Book Description
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.
Author: John Carmody Publisher: W W Norton & Company Incorporated ISBN: 9780393731217 Category : Architecture Languages : en Pages : 400
Book Description
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.
Author: Ivan Yun Tong Lee Publisher: ISBN: Category : Languages : en Pages : 306
Book Description
In the quest for improving building energy efficiency raising the level of performance of the building enclosure has become critical. As the thermal performance of the building enclosure improves so does the overall energy efficiency of the building. One key component in determining the energy performance of the building enclosure is windows. Windows have an integral role in determining the energy performance of a building by allowing light and heat from the sun to enter into a space. Energy efficient buildings take advantage of this free solar energy to help offset heating energy consumption and electric lighting loads. However, windows are traditionally the least insulating component of the modern building assembly. With excessive use, larger window areas can lead to greater occupant discomfort and energy consumption from greater night-time heat loss, higher peak and total cooling energy demand from unwanted solar gains, and discomfort glare. As a result, windows must be carefully designed to not only minimize heat loss, but also effectively control solar gains to maintain both a thermally and visually comfortable environment for the appropriate climate region and orientation. In this thesis, a complete analysis of window assemblies for commercial office buildings is presented. The analysis is divided into three sections: the Insulated Glazing Unit (IGU), the Curtain Wall Section (frames), and the overall energy performance of a typical office building. The first section investigates the performance characteristics of typical and high performance IGUs, specifically its insulating value (Ucg), its solar heat gain properties (Solar Heat Gain Coefficient, SHGC), and its visual transmittance (VT) through one-dimensional heat transfer and solar-optical modeling. Mechanisms of heat transfer across IGUs were investigated giving insight into the parameters that had the most significant effect on improving each performance characteristic. With a through understanding of IGU performance, attainable performance limits for each of property were generated from combining of different glazing materials, fill gases, and coatings. Through the right combination of materials IGU performance can be significantly altered. The U-value performance of IGUs ranges from 2.68 W/m2K (R-2.1) for a double-glazed, clear, air filled IGU to 0.27 W/m2K (R-21) for a quint-glazed, low-E, xenon filled high performance IGU. The second part of the thesis looks at the thermal performance of curtain wall sections that hold the IGU through two-dimensional heat transfer modeling. Similar to the IGUs, heat transfer mechanisms were studied to by substituting different materials to determine which components are crucial to thermal performance. From this analysis improvements were made to typical curtain wall design that significantly reduces the overall heat transfer within the frame section, producing a high performance curtain wall section. With simple modifications, a high performance curtain wall section can reduce its U-value by as much as 81% over a typical curtain wall section, going from 13.39 W/m2K to 2.57 W/m2K. Thus significantly reducing the U-value of curtain wall systems, particularly for smaller windows. The final part of the thesis examines the impact of typical and high performance windows on the energy performance of perimeter offices of a high-rise commercial building located in Southern Ontario. An hourly simulation model was set up to evaluate both the annual and peak energy consumption of a typical perimeter office space. The office faced the four cardinal directions of north, east, south, and west to evaluate the effect of orientation. The model also included continuous dimming lighting controls to make use of the available daylight. The effect of exterior shading on perimeter space energy performance was also investigated with both dynamic and static exterior shading devices. The results of the simulations revealed that window properties have very little influence on the energy performance of a high internal heat gain office, that is typical of older offices with less energy efficient office equipment and lighting and a higher occupant density. Conversely, window properties, particularly the insulating value of the window, has a greater effect on the energy performance of a mid to low internal heat gain office that is typical of most modern day commercial buildings. The results show windows with lower U-values yet higher SHGC are preferred over windows of similar U-values but with lower SHGC. The results also indicate that both static and dynamic shading have very little effect on energy performance of mid to low internal heat gain offices. From this analysis optimal window areas in the form of window-to-wall ratios (WWR) are presented for each orientation for mid to low internal heat gain offices. The optimal WWR for south-facing facades are between 0.50 to 0.66, and 0.30 to 0.50 for east-, west-, and north-facing facades, while for high internal heat gain perimeter spaces window areas should be kept to a minimum.
Author: Negar Ashrafi Publisher: ISBN: Category : Languages : en Pages :
Book Description
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.
Author: M.S. Robinson Publisher: CRC Press ISBN: 8770222908 Category : Business & Economics Languages : en Pages : 418
Book Description
This book provides a blueprint for action for readers making decisions about how to improve the energy efficiency and performance of new or existing buildings. Suitable for both seasoned veterans and new managers, it takes an objective and orderly approach to what is often a complex, costly, and time-consuming process. The book presents fundamental principles illustrated with case studies. It thoroughly covers the topics in a concise, technically accurate way. The book is designed for architects, engineers, and construction managers.
Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
The US Department of Energy (DOE) Office of Energy Efficiency and Renewable Energy (EERE) and Traco partnered to develop high-performance windows for commercial building that are cost-effective. The main performance requirement for these windows was that they needed to have an R-value of at least 5 ft2 F h/Btu. This project seeks to quantify the potential energy savings from installing these windows in commercial buildings that are at least 20 years old. To this end, we are conducting evaluations at a two-story test facility that is representative of a commercial building from the 1980s, and are gathering measurements on the performance of its windows before and after double-pane, clear-glazed units are upgraded with R5 windows. Additionally, we will use these data to calibrate EnergyPlus models that we will allow us to extrapolate results to other climates. Findings from this project will provide empirical data on the benefits from high-performance windows, which will help promote their adoption in new and existing commercial buildings. This report describes the experimental setup, and includes some of the field and simulation results.
Author: Franca Trubiano Publisher: Routledge ISBN: 1135874840 Category : Architecture Languages : en Pages : 296
Book Description
Both professionals and students are increasingly committed to achieving high-performance metrics in the design, construction and operation of residential buildings. This book responds to this demand by offering a comprehensive guide which features: architectural innovations in building skin technologies which make lighter more transparent buildings high performing; energy-free architectural design principles and advances in building-integrated photovoltaics; essential engineering principles, controls and approaches to simulation for achieving net zero; the advantages of integrated design in residential construction and the challenges and opportunities it engenders; detailed case studies of innovative homes which have incorporated low-energy design solutions, new materials, alternative building assemblies, digital fabrication, integrated engineering systems and operational controls. Divided into four parts, the book discusses the requisite AEC (Architecture, Engineering and Construction) knowledge needed when building a high-performance home. It also communicates this information across four case studies, which provide the reader with a thorough overview of all aspects to be considered in the design and construction of sustainable homes. With contributions from experts in the field, the book provides a well-rounded and multi-faceted approach. This book is essential reading for students and professionals in design, architecture, engineering (civil, mechanical and electrical), construction and energy management.
Author: Michael Maines Publisher: Taunton Press ISBN: 9781641551656 Category : Architecture Languages : en Pages : 256
Book Description
Pretty Good House provides a framework and set of guidelines for building or renovating a high-performance home that focus on its inhabitants and the environment--but keeps in mind that few people have pockets deep enough to achieve a "perfect" solution. The essential idea is for homeowners to work within their financial and practical constraints both to meet their own needs and do as much for the planet as possible. A Pretty Good House is: * A house that's as small as possible * Simple and durable, but also well designed * Insulated and air-sealed * Above all, it is affordable, healthy, responsible, and resilient.
Author: John Carmody
Author: John Carmody
Author: John Carmody
Author: Ivan Yun Tong Lee
Author: Negar Ashrafi
Author: Rosalie T. Ruegg
Author: M.S. Robinson
Author: 
Author: Franca Trubiano
Author: Michael Maines
Author: Kerry Lynn Haglund