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LHS Tech/Design 2 Lighting Project

Objective: To analyze the cost of lighting and ways of possibly lowering that price. LHS Tech/Design 2 Lighting Project. Carena Pineda, Ricky Edwards, Alex Flores, Kevin Coleman, Connor King, Isaac Lynn, Kian Paraiso Mr. Novotny 2008. What we need.

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LHS Tech/Design 2 Lighting Project

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  1. Objective: To analyze the cost of lighting and ways of possibly lowering that price. LHS Tech/Design 2Lighting Project Carena Pineda, Ricky Edwards, Alex Flores, Kevin Coleman, Connor King, Isaac Lynn, KianParaiso Mr. Novotny 2008

  2. What we need • Research 3 aspects of lighting in a classroom • How much light is in the room and is needed (color/intensity/distribution) • Efficiency of various lights • Occupancy time of the room • Lutron Greenovation products installed • Motion sensor • Light meter by windows • Dimming/Balancing capability • Calculations/ Expenses/ Savings • Benefits • Costs

  3. 56% of all electrical use in schools is for Lighting

  4. Different Types of Bulbs Amps times volts (110)= How many watts being used

  5. Research • A light sensor is used to measure the amount of light in an area • Light can be measured in foot-candles • As the distance from the source of light increases, the amount of light in an area decreases. • The brightness of a light depends on the color of the light. • We made a floor plan and measured the amount of light in each 4x4 tile with a light sensor to determine how much light is in the lab. • Amount of light varied by 75 ft. candles throughout the room (75-150 ft. candles)

  6. Research • The occupancy of a room can be determined in many ways; a sign in sheet, a video camera, or a motion sensor. • The sign in sheet showed that room use varied everyday and that responsibility for signing in was limited. • The cost of kilowatt of electricity is 14 cents. • During the course of a day in the room, 15,600 watts are consumed in a 12 hour day. • It costs $2.19/day to light the room ($394.20 for 180 days) • If the lights in this room are reduced during non-occupancy, yearly costs would be reduced from $394.20 to $270.00.

  7. Statistics There are approximately 5,200 fluorescent bulbs in LHS. * 2,200 bulbs in classrooms * 1,000 in hallways * 2,000 in various locations around the school, including the music wing, cafeteria, library, offices, etc…

  8. Statistics • The school consumes 1,983 KwH per day for lighting, or • $278 per day to light the school, or • $49,986 for 180 days of school.

  9. It costs $278 per day to light the school It costs about $49,986 per year (180 days) Right now, 4,200 bulbs are on for 12 hours a day, 1,000 bulbs are on for 18 hours a day If hallway lights are reduced from 18 hours to 12 hours, the school would save $4,381 per year If we turn off the lights while they aren’t in use, the classrooms from 12 hours to 8 hours and the other 2,000 lights around the school from 12 hours to 10 hours, the school would save a total of $12,354 Comparison

  10. Overall Design • Motion Sensor to detect movement/lack of movement in class – automatically turn off lights after ten minutes of no activity • Dimmer Controls to turn lights down when not needed or bright outside • Programmable Ballasts to balance light output across the room • Light Sensor to determine when sunlight is present and lights can be dimmed

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