OUGD601 - Practical - Research - General Research on LED Light Bulbs

General Research on LED Light Bulbs

Information about LED Light Bulbs:

- means changing bulbs less often
- energy efficiency reduces cost for the consumer
- less waste created because of infrequent changing of bulbs
- LEDs can save up to 90% energy compared to traditional light bulbs
- LED light sources last longer
- avoids hassle of changing bulbs often
- LEDs use less energy (watt) to produce the same light output (lumen)
- LED uses 2.5 watts for 115 lumen vs traditional bulb 15 watts for 115 lumen
- last longer than average light bulb
- will shine as bright as they did when bought - less likely to fade over time
- emit the same amount of light as traditional light bulbs
- LED's can produce warm glow, or mimic natural light
- emit less energy
- some heat emitted
- don't emit infrared, or ultraviolet light only visible light so less warm
- initial cost higher than traditional light bulb 
- long term save money 
- last for up to 15 years
- price being reduced
- 'Colour Rendering Index' (CRI) describes colours in relation to daylight. White Light LEDs CRI between 75 and 85 out of 100 - shows the quality of the light   
- LEDs very robust no breakable elements
- quick to warm up and have full output almost instantly
- can be switched on and off and doesn't effect lifespan
- efficient in cold temperatures and can even last longer 
- high temperatures can shorten lifespans 
- some LEDs can be dimmed
- can come in bright white and different shades of white from yellow to cool blue - can find 'shade of white' level on packaging  
- do no contain mercury, lead or other toxic elements 
- recyclable 
- safe for eyes

Philips Bulbs

- Philips LEDs use 80% less energy than incandescent light bulbs
- create warm light like incandescent
- LED last for 15,000 hours with is the same as 15 incandescent
- money saved straight away
- lower energy bill
- conventional bulb lasts 2000 hours vs up to 20000 hours for Philips LED light bulb which is equal to 20 years
- looked at how people choose light bulbs - people preferred LEDs over halogen and incandescent bulbs based on overall colour appearance not consistent light output
- pass vibration tests and even military standards 
- value for money - 20,000 hours or three and a half hours per day for 15 years - use less than 80% less energy so reduces energy bill

https://www.philips.co.uk/c-m-li/led-lights/eco-friendly-led-light

- can make impact on global warming 
- low energy / efficient light bulbs could stop 16 billion tons of carbon being added to atmosphere in next 25 years 
- could save £1.300 bn in energy saving 
- artificial light makes up one fifth of worlds energy consumption - more than all nuclear power stations in world 
- creates 1.9 billion tons a year - same as three quarters of carbon coming from exhausts of vehicles in world 
- next 25 years demand will increase to twice current levels 
- UK uses inefficient lighting systems 
- incandescent lights give off 20 times more heat which increases need for air-conditioning
- in most houses 15% of electricity bill  comes from lighting 
- if very american home switched five most used fittings, $6bn would be saved  

https://www.independent.co.uk/environment/a-bright-idea-how-changing-light-bulbs-helps-beat-global-warming-and-cut-bills-406494.html

- LEDs light bulbs consume one forth to one sixth of electricity used by incandescent bulbs 
- up to 40,000 hours life 

https://www.japanfs.org/en/news/archives/news_id035897.html

- many good, eco friendly bulbs that people are unaware of
- need to learn what option available and how to use them 
- traditional incandescent bulb beautiful aesthetic - golden and bronze at dimmer ranges 
- better value for money, generate same amount of light, use 45% less energy
- LED very efficient , with one watt producing bright light 
- light emitted by tiny chips  

https://www.telegraph.co.uk/lifestyle/9098236/Shedding-some-light-on-eco-friendly-bulbs.html