A Complete Guide to Energy Efficient Home LIghting

A Complete Guide to Energy Efficient Home Lighting Home lighting is an underrated part of home energy efficiency that can be easily overlooked by “larger" issues, such as heating and cooling. However, investing in more energy efficient lighting can significantly lower your energy usage and even impact how you feel. This infographic will teach you about different types of lighting and how you can convert your home into a "greener" place to live simply through lighting. Understanding Light Bulbs 1 LIGHT QUANTITY A footcandle is the measurement of Power of light source intensity of illumination. 5-20 footcandles of illumination allow you to find your way at night. Lumen measures the amount of Flow of light energy light emitted by a light bulb. 100-watt incandescent bulbs emits 1750 lumens. Illumination on surface Lighting Efficacy Illumination is the distribution of light on a horizontal Efficacy = # of lumens electricity consumed surface. Efficacy Rank: 1. LEDS 2. Compact Fluorescents 3. Fluorescents 4. Halogens 5. Incandescents LIGHT QUALITY * Color Temperature measures how warm or cool the appearance of the light source is. Incandescent Halogen Warm White Fluorescent Candle Flame Cool White Fluorescent Daylight Warm color temperatures (2700°K to 3000°K) provide a welcoming atmosphere for dining rooms, living rooms and bedrooms. Label = "warm white" or "soft white." Cool color temperatures (3500°K to 4100°K) provide a clean and clear light that works well in kitchens and bathrooms. Label = "cool white" or "bright white." The coolest temperature Daylight (5000°K and up) * The Color Rendition is how colors appear when a light source illuminates them. The Color Rendition Index (CRI) measures the ability of a light source to render colors in the same way that sunlight does. CRI : 50-70 Fair CRI : 70-80 Good A CRI of 80 or higher works well inside CRI: 80-90 Excellent most homes. LIGHTING USES Accent lighting allows for attention to be drawn to special features inside or outside the home. Ambient lighting provides illumination for daily indoor activities and security outdoors. Task lighting illuminates areas that require more light such as table lamps or bathroom mirrors. Types of Lighting 1 LIGHTING ENERGY EFFICIENCY CFL bulbs, LED bulbs New 30% energy saving halogen light bulbs Conventional All ordinary "incandescent" bulbs are due to be phased out in the next 3 years. halogen light bulbs Efficient Inefficient INCANDESCENT LIGHTING Operate without a ballast and light up instantly providing a warm light. Low efficacy of 10-17 lumens per watt. Average operating life is only 750-2,500 hours. 90% of the electricity used in standard incandescent bulbs produces heat, not light. Standard Incandescent Light Bulbs - The most common, yet most inefficient light source. - When heated by an electrical current, a tiny coil of tungsten glows and produces the light. Halogen Light Bulbs - More energy efficient than standard incandescents. - Often used in reflectors like desk lamps, flood lighting and recessed or track fixtures inside a home. - Can be used with dimmers, timers and other lighting controls. Reflector Light Bulbs - Shine light on a specific area. Parabolic Aluminized lights (Type PAR) are used for floodlighting. Ellipsoidal Reflector lights (Type ER) project light down from recessive fixtures focusing the light beams about 2 inches in front of its enclosure. 2X more energy efficient than Type PAR. Incandescent Lamp Filament Nitrogen of Argon gas Lead wires Tip#1 Turn off incandescent lights when they are not in use. Only 10%-15% of the electricity consumed produces light. COMPACT FLUORESCENT LIGHTS (CFLS) CFLS use 25%-35% of the energy that incandescent lights use, while providing equal illumination. Efficacy: 30-110 lumens per watt. A A ballast regulates the operating current and provides a high start-up voltage. Compared to incandescent lights: 10x longer Last up to 10x longer than standard incandescent bulbs (7,000-24,000 hours). Produce 75% less heat than incandescent lights. Use 75% less energy TYPES OF CFLS Fluorescent Tubes - Provide ambient lighting in large indoor areas. - Have a low brightness that creates a less direct glare than incandescent bulbs. - A twin-tube lamp has 2 parallel tubes and fits into lamps, task lights, recessed ceiling lights and wall lights. - A quad tube lamp is half the length of the twin-tube, but it provides the same light output. - F Lamps are two twin-tubes aligned top to bottom and are used for low-profile recessed fixtures and task lights. Circline Fluorescent Bulbs - Circular tube-like fluorescent lights are used for portable task lighting. - Designed for reading lamps. - Give off either a cool white light or a warm light. Spiral Bulbs - Spiral lamps are a continuous tube in a spiral shape. - Their shape and the light they cast is similar to a standard incandescent bulb. Color Rendition Temperature Outdoors (K) Color Fluorescent Efficacy Lifetime Lighting Type Indoors/ (lumens/ (hours) watt) Index (CRI) Straight tube 30/100 7000/ 24,000 50/90 2700-6500 Indoors/ (fair to good) | (warm to cold) outdoors Compact fluorescent lamp (CFL) 50/70 10,000 65/88 2700-6500 Indoors/ (good) (warm to cold) outdoors Circline 40/50 12,000 Indoors Tip#2 Dust and clean your light bulbs every 6-24 months to ensure optimal energy efficiency. LED LIGHTING LED stands for light-emitting diode and: Is one of the most energy-efficient light bulbs, is more durable and has better light quality than all other lighting options. Use 75% less energy than incandescent bulbs and last 25x longer. Health benefits(1) Less noise pollution (buzzing) reduced ADD, fatigue and irritability. Less eye strain fewer headaches The electrical output of : 44 electric power plants By 2027, widespread use of LEDS in the US could save about 348 TWh of electricity and could save more than $30 billion. The Difference 80% 90% CFLS incandescents Directional like a flashlight B while other bulbs require C light to be reflected onto the desired spot. LEDS: barely emit any heat CFLS: release 80% of energy as heat, Incandescents: release 90% of energy as heat. Near-monochromatic A light sources that emit various colors. 5 OUTDOOR SOLAR LIGHTING These systems rely on solar cells to convert sunlight into electricity. In order to work well, solar cells must get The electricity the recommended created is stored in amount of sunlight. batteries so it can be used at night. Choose the Right Light Choose this bulb Spiral Covered Globe a shape Indoor Outdoor Flood Flood Tubed Bullet Lighting Controls By automatically turning off lights, lighting controls save electricity. Dimmers are used with indoor lighting for incandescent and fluorescent light bulbs. Special dimming ballasts and holders are needed to dim fluorescent light bulbs. Motion Sensors - Motion sensors turn on outdoor lights automatically when motion is detected and they turn off shortly after. - Use for outdoor security or utility lighting using incandescent lights. - A combination of motion sensor and photosensor is the best way to control security and utility lights. Occupancy Sensors - Occupancy sensors control indoor lighting by detecting the activity within a certain area. - Lights automatically turn on when someone enters a room and automatically shut off after a person exits a room. - Ultrasonic occupancy sensors detect sound. - Infrared occupancy sensors detect heat and motion. Photosensors - Photosensors can save energy by automatically turning off outdoor lights during the daytime. They sense ambient light conditions. Timers can be used for both indoor and outdoor lighting. Don't use indoor CFLS for outdoor fixtures. The moisture can shorten the life of the bulb. Turn off CFLS if you leave the room for more than 15 minutes. WellHome. Sources Improve the weather inside. - http://www.e http://www.energystar.gov/index.cfm?fuseaction=find_a_product.showProductGroup&pgw_code=LB http://www.energysavers.gov/your_home/lighting_daylighting/index.cfm/mytopic=11980 http://www.esb.ie/esbcustomersupply/residential/home/esb_eah_apr_may09.pdf http://www.focusonenergy.com/files/Document_Management_System/Residential_Programs/cfl_factsheet.pdf http://www.elightbulbs.com/customer_service_color_temperature_selector.cfm http://saveenergy.about.com/od/efficientlighting/p/CFLModels.htm dvatech.conhenefits/benefitcchealth.html ------------------------ *1. 6600 6400 6200 6000 5800 Outdoor Exposed Outdoor Covered Track Lighting 4200 4000 Recessed Cans 3800 3600 3400 Wall Sconces 3200 3000 2800 Ceiling Fans 2600 2400 2200 Ceiling Fixtures Pendant Fixtures Table/ Floor Lamps