Illumination and its effect
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This document summarizes the key aspects of illumination and its effects. It discusses illumination as both a science and art that involves measuring lighting parameters and designing efficient systems. Adequate lighting is important for industrial task efficiency. The objectives of a good lighting system are to provide sufficient, uniform light distribution over work areas to fulfill functional, aesthetic, and economic needs. Insufficient, glaring, poorly distributed, or over illumination can cause issues like headaches, eyestrain, and decreased productivity and performance. Proper lighting design aims to avoid these negative effects.
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2. Different types of luminaires (lighting fixtures) and how their distribution characteristics impact lighting quality and efficiency.
3. The six main lighting system types - general, localized, ambient, task, accent, and decorative - and their advantages/disadvantages.
4. Methods for visualizing and understanding light distribution from different sources.
Lighting_Design2010.pptx
This document discusses energy efficient lighting design. It covers selecting efficient lighting equipment, using daylighting when available, and occupancy sensors to reduce lighting usage when spaces are unoccupied. Proper lighting design considers occupant safety and comfort, energy minimization, and creating the right atmosphere. The document outlines lighting design stages and factors to consider like illumination levels, color rendering, equipment selection, and control systems.
LIGHTING AND ENERGY INSTRUMENTS FOR AUDIT
The document discusses lighting instruments used for energy audits. It covers key concepts in lighting including illuminance, luminance, lighting quantity units (watts, lumens, foot-candles), efficacy, IES recommended light levels, and aspects of lighting quality such as uniformity, glare, color rendering index, and coordinated color temperature. Good lighting design aims to provide the right quantity and quality of light to suit the visual task and create the desired mood or atmosphere in a space. Lighting quality factors like uniformity and minimizing glare are important for occupant comfort and productivity.
illumination scheme
This presentation contain different illumination scheme for domestic, industrial and commercial premises.
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Lighting systems and their design..mau --jmi-2014
An essential service in all the industries,
The power consumption by the industrial lighting varies between 2 to 10% of the total power depending on the type of industry.
Lightingisanarea,whichprovidesamajorscopetoachieveenergyefficiencyatthedesignstage,by incorporation of modern energy efficient lamps,luminaires and gears,apart from good operational practices.
LIGHTING SYSTEMS AND THEIR DESIGN..MAU---JMI-2014
This document provides an overview of lighting systems and their design. It discusses the three main types of lighting systems: ambient, accent, and task lighting. Ambient lighting provides overall illumination, accent lighting highlights specific objects, and task lighting is aimed at specific work areas. Proper lighting design considers illumination levels, placement of luminaires, and controls. Key factors in lighting design include distribution, quality and quantity of light, and how lighting impacts spaces and people. The document also outlines techniques for controlling directionality of light and defines lighting design terms.
219291453 interior-lighting
1) The document discusses the importance of considering both luminaire efficiency and application efficiency when designing lighting. While saving energy is important, overemphasizing luminaire efficiency alone can result in glare or gloomy spaces.
2) Application efficiency is determined by factors like adequate light levels, uniform illumination, visual comfort, and accurate color rendition. It employs metrics like footcandles, luminaire spacing, and candela measurements.
3) The most appropriate efficiency metric is lighting power density, which establishes an energy budget based on watts per square foot and allows achieving design goals with lower energy use. Considering both luminaire and application efficiency leads to well-lit spaces that satisfy needs and minimize consumption.
GreenStudio - Chapter 4 2 8 Electric Lighthing
Electric lighting systems account for around 19% of global electricity usage and contribute significantly to carbon emissions. To reduce this, the report suggests using more efficient lighting technologies like fluorescents and high-efficiency ballasts. A green electrical lighting system can reduce energy usage for lighting and cooling while improving visual comfort. Key factors that impact lighting strategies include ceiling height, window placement, and luminaire selection and placement. Electric lighting should be addressed during early design phases to maximize energy efficiency.
Illumination Engineering.pdf
This ppt presents you about what is illumination various types of illumination and types of lighting schemes in illumination.there are two main types of lighting one is natural lighting which occurs with the lighting of sun and artificial lighting which occurs due to the artificial sources of light such as bulbs,torches,tubes etc Artificial light sources are other sources of light which developed to compensate for or assist the natural light. It will have different frequencies and wavelengths that determine the light color.Artificial light sources are categorized by the technology used to produce the light. There's dozens of sources, with a few common in household applications and others more suitable for industrial uses. The five most common light sources are as follows:
Incandescent lamp.
Compact fluorescent lamp.
Fluorescent tube.
Discharge lamps.
Light Emitting Diode (LED).
Until recently the most common electric light source was the incandescent lamp. This is still widely used, although its relatively low energy efficiency is leading to its replacement by other more efficient lamps such as the CFL.
The connection to a light fitting is either by screw thread or bayonet.
A large variety of shapes, sizes and power is available, as well as different colour ranges. Typical lamps for household use range from about 40 to 100 W, giving a light output of 420 to 1360lm at the typical lamp efficiency of about 12%.
The compact fluorescent lamp (CFL) was designed as a more efficient replacement for incandescent lamp. It is supplied with the same fixing system (screw or bayonet), and can be used in many light fittings designed for incandescent lamps.
Power ratings of CFLs that can provide approximately the equivalent light output to incandescent lamps are shown in the table below, together with their efficacy ratings.
tube
Fluorescent tubes are the main form of lighting for offices and commercial buildings.
They are a form of gas discharge lamp, and are formed in a long thin glass cylinder with contacts at either end that secure them to the fitting (or luminaire) and provide the electrical connection.
The tube contains mercury vapour at low pressure, and the inner wall of the glass is coated with a phosphor that reacts to ultra-violet radiation. When electricity is passed through the vapour it emits UV radiation that is converted by the phosphor to visible light.
The most efficient fluorescent tubes are the T5. With a smaller diameter (16mm) than earlier tubes, these can achieve a luminous efficacy of up to 104lm/W
Discharge lamps work by striking an electrical arc between two electrodes, causing a filler gas to give off light.
Different metals and filler gasses can be used to provide a range of colour and brightness.
Discharge lamps provide high luminous efficacy combined with long life, resulting in the most economical light source available
Types of gas-discharge lamps:
The gas discharge lamps have three types as follows
Low pressure d
Lighting design considerations
The document provides an overview of lighting design considerations for a presentation by Sandal Usmani and Momin Mohammad Zaki. It discusses key factors in lighting design including lighting quantity through task illuminance levels, and lighting quality in terms of light distribution, integration of daylighting, and considerations for the space and workplace environment. Specific design elements are outlined, such as using task and ambient lighting, minimizing light pollution and trespass, providing flexibility, and addressing color appearance, luminance, and glare.
Lighting basics book
The document is a chapter from "The Lighting Handbook" that discusses lighting technology fundamentals. It covers topics like the nature of light, how the human eye perceives light, parameters used in lighting like luminous flux and illuminance. It also discusses quality characteristics of lighting such as glare limitation, illuminance levels and color rendering. Measurement of illuminance is also briefly outlined.
A new basis for lighting practice
Here is the presentation Kit Cuttle gave at our lasts seminar in London, explaining his concept of mean room surface existence as a basis for lighting standards. If you want more info you can visit Kit’s blog.
http://kit-lightflow.blogspot.com
Lighting for Education
In lighting applications for EDUCATION, we strongly emphasise those criteria within the LQS that support the provision of a high quality solution for classrooms - ERGONOMICS, EMOTION, EFFICIENCY.
Lighting systems 2014
This document provides an introduction and overview of lighting engineering concepts. It begins with a course contents listing topics like introduction to lighting engineering, batteries, magnetic circuits, and power plants. The main section describes lighting metrics such as luminous flux, illuminance, luminance and the inverse square law. It also covers light sources and their spectral distributions as well as color characteristics like correlated color temperature and color rendering index. The document concludes with an overview of lighting control applications including one-way circuits, infrared and RF systems, timers, time switches and dimmers.
ECBC Training_06-Lighting
This document provides an overview of lighting requirements in the ECBC. It begins with an introduction to lighting and its impact as an energy consumer. It then discusses a whole building design approach to lighting, including improving spaces, optimizing light quality, capturing daylight, considering lighting quantity, and using efficient electric lighting and controls. The document outlines both mandatory and prescriptive ECBC requirements for interior and exterior lighting, such as automatic lighting controls, space controls, daylighting controls, and limits on exit signs and exterior lighting. Overall, the document provides guidance on best practices and code requirements for energy efficient lighting design in commercial buildings under the ECBC.
LIGHTING IN HOSPITALS
LIGHTING IN HOSPITALS
Lighting or illumination is the deliberate use of light to achieve a practical or aesthetic
effect. Lighting includes the use of both artificial light sources like lamps and light fixtures,
as well as natural illumination by capturing daylight .
Ambient (general lighting)
Provides an area with overall illumination. Also known as general lighting, it radiates a comfortable level of brightness without glare
•Task lighting
Helps you perform specific tasks, such as reading, grooming, preparing and cooking food,
•Accent lighting
Adds drama to a room by creating visual interest. As part of an interior design scheme, it is used to draw the eye to houseplants, paintings, sculptures and other prized possessions
Energy modeling ppt
Daylight modeling and energy modeling are used to analyze the daylighting and energy usage of buildings. Daylight modeling uses software to calculate interior light levels based on sky conditions and location. Energy modeling predicts energy usage based on climate data, building systems, and occupancy schedules. Both are used to compare design options, verify code compliance, and identify potential energy savings. Daylight modeling outputs include illuminance and luminance data, while energy modeling inputs include heating/cooling loads. Common software used includes Radiance, DAYSIM, and EnergyPlus.
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- 1. Topic: Ergonomic assginment-2 (Illumination and its effect) Presented by: Shubhangi verma(16) Shubham kakde(73) Chetan vijay rathi (29)
- 2. ILLUMINATION Is brighten by light It is both science and art. The scientific aspects include the measurement of various lighting parameters and the design of energy efficient system. The artistic side comes into play in combining light source.
- 3. NEED FOR ILLUMINATION The majority of industrial tasks will depend for their efficiency on adequate vision, and therefore lightning plays an important part in determining the efficiency with which tasks are carried out. it is usually defined in terms of lumens per square foot(lm/ft)
- 4. It should fulfill aesthetic, emotional, as well as economic and functional requirements. The main objectives of any good lightening system are to provide adequate illumination with uniform light distribution all over the working plane. A well designed illumination system adds to the productivity of its occupant, creates a lively atmosphere and reduces fatigue. OBJECTIVES:-
- 5. EFFECTS Insufficient light-not enough light as per the need Glare-too much light for the need Improper contrast Poorly distribution of light Thermal heating
- 6. Over Illumination Presence of light which is higher Causes - Illuminating an unoccupied area Using electrical lights instead of natural light Over-illumination has been linked to headaches, fatigue, medically defined stress, anxiety, and decreases in sexual function Energy and economic consideration
- 7. Low productivity High human error rates Inability to match or select correct colors Eyestrain Headache Low employee morale Rapid fatigue EFFECTS ON PERFORMANCE:-
- 8. Thank you