3 edition of Energy-efficient daylighting & electric lighting techniques found in the catalog.
Energy-efficient daylighting & electric lighting techniques
Includes bibliographical references (p. 110) and index.
|Other titles||Energy efficient daylighting and electric lighting techniques|
|Series||HT Button publication series|
|LC Classifications||TH7703 .G76 2007|
|The Physical Object|
|Pagination||v, 128 p. :|
|Number of Pages||128|
|LC Control Number||2009419092|
As daylight penetration is limited by the siting and facade design, the circuiting of the electric light fixtures is critical in gauging success of a daylighting strategy. In larger rooms, windows on more than one wall give balanced light distribution throughout the room, reduce glare, and provide cross ventilation. If the temperature is correct, and a room is unoccupied, the drapes can automatically close to reduce heat transfer in either direction. Good daylighting requires attention to both qualitative and quantitative aspects of design.
In trending years, the gap between power generation figures and demand figures is a matter of concern, as it implies the failure of power supply system to meet the power demand, thus a warning about lack of conservation of energy. However, the technology is still expanding and many experts expect LEDs to revolutionize lighting over the next decade. Daylight-responsive electric lighting controls Daylight-optimized interior design such as furniture design, space planning, and room surface finishes. When this occurs, the building operator must disable the dimming system, again leading to increased energy use.
To be effective, daylighting must be integrated with electric lighting design. Below figure shows how these lamps are rated for same light output or illumination. A maximum facade facing due south is the optimal orientation. This 3D visualization software has tools for modeling, animation, lighting, and rendering. Exterior motion detectors and interior occupancy sensors can be used to turn lights on when people including intruders are present. Seasonal performance of shading, redirection devices.
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Awareness of basic visual acuity and performance issues is essential to an effective daylighting design, including: Veiling reflections. Generally, the most common cause of an inefficient lighting system in the home where the excessive use of low voltage tungsten halogen downlights produce extremely high lighting levels in some sections of the house for example the breakfast bar in the kitchen.
In hot climates, exterior shading devices often work well to both reduce head gain and diffuse natural light before entering the work space. Radiosity and ray-tracing are methods can deal with complex geometry, allow complex sky distributions and potentially produce photorealistic images.
Electric lighting controls are appropriate for a wide variety of spaces, from restrooms to large open officesfrom conference rooms to classrooms. Typically, the depth of daylight penetration is about two and one-half times the distance between the top of a window and the sill.
Windows Energy-efficient daylighting & electric lighting techniques book are located below table height do not add much lighting benefit but may add considerably to home heating and cooling cost.
The benefit of continuous daylight autonomy is that it does not give a hard threshold of acceptable illuminance. This project demonstrated the technical feasibility of a zone-based integrated control technology.
A floor depth of no more than 60 ft. Hold a mirror in the proposed location of the screen. The technology can work in all building types as well, including commercial office buildings, most spaces within a school i.
This is only possible for new construction projects and does not apply to retrofits. A large area of glass can also be added between the sun room and the interior living quarters. Note that fluorescent fixtures that are intended to be dimmed require special compatible dimming ballasts.
A light shelf, if properly designed, has the potential to increase room brightness and decrease window brightness.
For example, dimming controls can provide the lighting flexibility which is often required in multi-use rooms or rooms in which projectors are used. If possible, the building footprint should be optimized for daylighting.
Some contrast in brightness levels may be desirable in a Energy-efficient daylighting & electric lighting techniques book for visual effectiveness. In conventional lamps like incandescent and gas discharge lamps, most of the electricity is wasted in terms of heat and also since ballast requires high voltage at the time of starting these consumes more power.
The thermostat control algorithm is based on a well-established thermal comfort model and formulated as a root-finding problem to dynamically determine the optimal thermostat setpoint for both energy savings and improved thermal comfort. This technology uses thin sheets of carbon-based compounds that glow when current is applied through electrodes.
Windows located high in a wall or in roof monitors and clerestories will result in deeper light penetration and reduce the likelihood of excessive brightness. A related term, solar heat gain coefficient, is beginning to replace the term shading coefficient. Not only the aesthetic aspects, the impact of daylighting on human health and work performance is also considered as qualitative daylighting.
It needs to be noted that since the payback analysis was partly based on the testbed performance results, it is constrained by the caveats Energy-efficient daylighting & electric lighting techniques book with the testbed Energy-efficient daylighting & electric lighting techniques book.
Achieving daylight autonomy requires an integrated design approach that guides the building form, siting, climate considerations, building components, lighting controls, and lighting design criteria.
Depending on climate or building orientation, the use of windows and skylights can have a positive or negative effect on a home's heating or cooling requirements. A daylight-optimized interior design considers furniture design, placement, and room surface finishes with respect to daylight performance.
This book should trigger creative thought. Recent developments in incandescent lighting technology include special reflective coatings and improved filament materials that produce less waste heat. LEED documentation[ edit ] The LEED daylighting standards were intended to connect building occupants with the outdoors through use of optimal daylighting techniques and technologies.
Glare, or excessive brightness contrast within the field of view, is an aspect of lighting that can cause discomfort to occupants.This source book addresses both electric lighting solu¬tions and daylighting solutions, and offers a method to compare these retrofit solutions on a common basis, including a wide range of.
Energy Efficient Lighting. One of the easiest ways to reduce home energy bills is to install more efficient lighting. While lighting typically accounts for only about ten percent of the average home's energy expenses, today's energy efficient lighting products can cut that portion of.
Energy Efficient Lighting Strategies in Buildings A lot of effort has been made in order to minimize the energy consumption of lighting installations. This effort has evolved, along with the development of new energy efficient lighting equipment, the utilization of improved lighting design techniques and the improvement of lighting control systems.Oct 16, · Chapter 8: Daylighting.
The handbook of lighting surveys & pdf / John L. Pdf. Boca Raton: CRC Press, c Light, light, light: effective use of daylight and electric lighting in residential and commercial spaces / Jane Grosslight; illustrations by Solar radiation and daylight models for the energy efficient design of.• Use energy-efficient lighting components, controls, and systems.
• Maximize the use of daylighting. INTERIOR LIGHTING OPTIONS DAYLIGHTING Daylighting is the use of windows and skylights to bring daylight into the home.
Today’s highly efficient windows and advances in lighting design allow efficient use of windows to.You may also read: Ebook to Calculate the Value of Resistor for LED’s Circuits What is Energy Efficient Lighting? When the energy usage of a product is reduced without affecting its output or final response or user comfort levels is referred as energy efficiency.