EcoRenovator  

Go Back   EcoRenovator > Improvements > Lighting
Advanced Search
 


Blog 60+ Home Energy Saving Tips Recent Posts Search Today's Posts Mark Forums Read


Reply
 
Thread Tools Display Modes
Old 09-20-08, 05:19 PM   #1
groar
X-Frenchy: very
 
groar's Avatar
 
Join Date: Sep 2008
Location: Toulouse, France
Posts: 153
Thanks: 0
Thanked 2 Times in 2 Posts
Default groar's lighting thread

Since years, we are replacing bulbs by CFL. A few months ago we tried a few LED. I was then curious to know how much we were saving by year.

I developed a little spread sheet, accessible here :
http://www.groar.org/EcoRenovator/lighting/

Warning, I developed it under OpenOffice and the xls format is from an export, so I don't know if it works.

To use it :
  • In F1 enter cost of 1 kWh
  • For each location (row from 5 to 19), enter :
    • number of bulbs (column B)
    • number of Watts of each bulb (column C)
    • number of Watt of equivalent standard bulb (column D)
    • number of Watt of previous bulb if any (column E - optional)
    • number of hours the bulb is light on by day (column F)

Results :
  • For each location :
    • Total cost by year (column G)
    • Total saving by year (column H)
  • Total cost by year (G21)
  • Total saving by year (H21)
  • Percentage of saving (H22)

Sorry, as I don't have cost of CFL of LED, I can't calculate time of return on investment and didn't developed this feature.

You may conclude that lighting saving isn't worth the investment, but remember that if everybody implement that then this is a lot of saving and delayed new power plant constructions, giving more chance to renewable plants.

In a few days I should add some pictures in this thread.

Have fun,

Denis.

__________________
Earth absorbs 1.8 t CO2/head/yr, while a French generates 6.2 t CO2/yr
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
  • kg saved 06/08-08/09: 1816.9+382.9 (ecodriving / 1420mi not driven) = 2199.8
    To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
    (2.66 kg/l diesel)
  • kg saved by 3kWc photo-voltaic solar panels : 187 kg/yr
    To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
    (59.1 g/kWh)
Radioactive wastes saved by 3kWc photo-voltaic solar panels :
  • Long life (>100,000 years) : 2.85 g/yr (0.9 mg/kWh)
  • Short life (<300 years) : 31.7 g/yr (10.0 mg/kWh)
Based upon "official" French figures...

Last edited by groar; 09-20-08 at 05:22 PM..
groar is offline   Reply With Quote
Old 10-05-08, 05:30 PM   #2
groar
X-Frenchy: very
 
groar's Avatar
 
Join Date: Sep 2008
Location: Toulouse, France
Posts: 153
Thanks: 0
Thanked 2 Times in 2 Posts
Default Led

We have a few LED in the house. They are 1.4w each. The facts are they don't light a lot (may be corresponding to a 6w bulb each) and they have a directional lightning, but they are interesting when you need few light.

We can imagine using LED over a desk per example. Today I don't think it's possible to use LED where 60w equiv. lightning is needed.

As said in another thread, we are using LED in two places : bathroom and baby's room.
  1. The bathroom
    We replaced 2x40w + 1x30w (=110w) of classic bulbs by 3x1.4w (=4.2w) LED, ie a 96% saving If more light is needed the ceiling has a 12w CFL (60w equiv.).

  2. The baby's room
    The blue LED permits a very calm ambient, avoiding people to be awakened by the light when the baby is going to sleep or when he must be changed or fed during the night. It replaces a 35w classic bulb, ie also a 96% saving If more light is needed the ceiling has a 8w CFL (35w equiv.), which is a bit too weak from time to time.

Denis.
__________________
Earth absorbs 1.8 t CO2/head/yr, while a French generates 6.2 t CO2/yr
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
  • kg saved 06/08-08/09: 1816.9+382.9 (ecodriving / 1420mi not driven) = 2199.8
    To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
    (2.66 kg/l diesel)
  • kg saved by 3kWc photo-voltaic solar panels : 187 kg/yr
    To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
    (59.1 g/kWh)
Radioactive wastes saved by 3kWc photo-voltaic solar panels :
  • Long life (>100,000 years) : 2.85 g/yr (0.9 mg/kWh)
  • Short life (<300 years) : 31.7 g/yr (10.0 mg/kWh)
Based upon "official" French figures...

Last edited by groar; 10-06-08 at 03:50 AM.. Reason: Better presentation
groar is offline   Reply With Quote
Old 10-05-08, 05:44 PM   #3
groar
X-Frenchy: very
 
groar's Avatar
 
Join Date: Sep 2008
Location: Toulouse, France
Posts: 153
Thanks: 0
Thanked 2 Times in 2 Posts
Default Cfl

We are using CFL nearly everywhere. Several kind of CFL exist :
  • The classic CFL emit a "standard" artificial light. May be noted 2700°K on package.
  • The "daylight" CFL emit a light closer to natural light. Usually noted 6500°K on package.
  • The spot CFL emit a narrow light, as classic spots.

Here are several examples :
  1. The classic CFL (2700°K)
    This one is a classic CFL consuming 21w (100w equiv.) and is replacing a classic 100w bulb, ie 79% saving.
  2. The "daylight" CFL (6500°K)
    This one is a "daylight" CFL consuming 20w (100w equiv.) and is replacing a classic 100w bulb, ie 80% saving.
    We are thinking about changing a few classic CFL with "daylight" CFL.

  3. The "daylight" spot CFL (6500°)
    The spots CFL are 9w (39w equiv.) and replacing 50w spots, ie 82% saving even if these are less efficient than other CFL. These spots CFL are "daylight" so even if the light is a little bit weaker (136w equiv. instead of 200w), the light quality is better.


Denis.
__________________
Earth absorbs 1.8 t CO2/head/yr, while a French generates 6.2 t CO2/yr
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
  • kg saved 06/08-08/09: 1816.9+382.9 (ecodriving / 1420mi not driven) = 2199.8
    To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
    (2.66 kg/l diesel)
  • kg saved by 3kWc photo-voltaic solar panels : 187 kg/yr
    To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
    (59.1 g/kWh)
Radioactive wastes saved by 3kWc photo-voltaic solar panels :
  • Long life (>100,000 years) : 2.85 g/yr (0.9 mg/kWh)
  • Short life (<300 years) : 31.7 g/yr (10.0 mg/kWh)
Based upon "official" French figures...

Last edited by groar; 10-06-08 at 04:03 AM.. Reason: Better presentation
groar is offline   Reply With Quote
Old 10-05-08, 05:40 PM   #4
SVOboy
Administrator
 
SVOboy's Avatar
 
Join Date: Aug 2008
Posts: 291
Thanks: 3
Thanked 4 Times in 4 Posts
Default

Looks pretty good in the bathroom. What kind of lights did you replace?
SVOboy is offline   Reply With Quote
Old 10-05-08, 05:48 PM   #5
groar
X-Frenchy: very
 
groar's Avatar
 
Join Date: Sep 2008
Location: Toulouse, France
Posts: 153
Thanks: 0
Thanked 2 Times in 2 Posts
Default

Quote:
Originally Posted by SVOboy View Post
Looks pretty good in the bathroom. What kind of lights did you replace?
Some classic spots, let by previous owners.

We never used them as 110w directly into the eyes are too much at any time.

Denis.
__________________
Earth absorbs 1.8 t CO2/head/yr, while a French generates 6.2 t CO2/yr
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
  • kg saved 06/08-08/09: 1816.9+382.9 (ecodriving / 1420mi not driven) = 2199.8
    To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
    (2.66 kg/l diesel)
  • kg saved by 3kWc photo-voltaic solar panels : 187 kg/yr
    To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
    (59.1 g/kWh)
Radioactive wastes saved by 3kWc photo-voltaic solar panels :
  • Long life (>100,000 years) : 2.85 g/yr (0.9 mg/kWh)
  • Short life (<300 years) : 31.7 g/yr (10.0 mg/kWh)
Based upon "official" French figures...
groar is offline   Reply With Quote
Old 10-06-08, 07:13 AM   #6
Daox
Administrator
 
Daox's Avatar
 
Join Date: Aug 2008
Location: Germantown, WI
Posts: 5,525
Thanks: 1,162
Thanked 374 Times in 305 Posts
Default

Where did you get your LED spotlights in the bath? How many lumens are they rated for?

I have about seven par20 lights (currently 50w halogen) in my Kitchen and would love to replace them with something efficient. However, they are on a dimmer, and I can't find any CFLs in par20 that are dimmable. Are most LEDs dimmable? I'm thinking they probably aren't.
__________________
Current project -
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.



To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
&
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
Daox is offline   Reply With Quote
Old 10-06-08, 04:23 PM   #7
groar
X-Frenchy: very
 
groar's Avatar
 
Join Date: Sep 2008
Location: Toulouse, France
Posts: 153
Thanks: 0
Thanked 2 Times in 2 Posts
Default

Quote:
Originally Posted by Daox View Post
Where did you get your LED spotlights in the bath? How many lumens are they rated for?
Bought in local store. The LED are xanlite. See ref. ALE21 in this French PDF.

About lumens, there was no more data on the package than in this PDF. My eyes say these LED are equivalent to a classic 6w bulb, but the light is directional so it's more intense in the pencil of rays.

Quote:
I have about seven par20 lights (currently 50w halogen) in my Kitchen and would love to replace them with something efficient. However, they are on a dimmer, and I can't find any CFLs in par20 that are dimmable. Are most LEDs dimmable? I'm thinking they probably aren't.
In France if the bulb, CFL, LED... isn't dimmable then a symbol must be present on the package. I don't remember having seen this symbol on the LED's package, but I may be wrong... I don't have any dim to test a LED.

After a quick search on Internet, and if I understand correctly, LED are dimmable but doesn't reply linearly to the dimmer.

Denis.
__________________
Earth absorbs 1.8 t CO2/head/yr, while a French generates 6.2 t CO2/yr
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
  • kg saved 06/08-08/09: 1816.9+382.9 (ecodriving / 1420mi not driven) = 2199.8
    To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
    (2.66 kg/l diesel)
  • kg saved by 3kWc photo-voltaic solar panels : 187 kg/yr
    To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
    (59.1 g/kWh)
Radioactive wastes saved by 3kWc photo-voltaic solar panels :
  • Long life (>100,000 years) : 2.85 g/yr (0.9 mg/kWh)
  • Short life (<300 years) : 31.7 g/yr (10.0 mg/kWh)
Based upon "official" French figures...
groar is offline   Reply With Quote
Old 10-07-08, 11:03 AM   #8
toyobug
avid DIY'r
 
toyobug's Avatar
 
Join Date: Sep 2008
Location: MS. Gulf Coast
Posts: 154
Thanks: 0
Thanked 1 Time in 1 Post
Default

noticable difference between the natural and classic CFL's.
Not sure which one I'd prefer. suggestions anyone?
toyobug is offline   Reply With Quote
Old 10-07-08, 11:26 AM   #9
Daox
Administrator
 
Daox's Avatar
 
Join Date: Aug 2008
Location: Germantown, WI
Posts: 5,525
Thanks: 1,162
Thanked 374 Times in 305 Posts
Default

It all depends on the color of the rooms IMO. If you want a room to appear warmer you go with the normal light. If you want a room to appear cooler go with the sunlight kind. Also, the sunlight kind are supposed to reduce the effects of seasonal depression. However, they usually cost more too.
__________________
Current project -
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.



To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
&
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
Daox is offline   Reply With Quote
Old 10-07-08, 12:15 PM   #10
toyobug
avid DIY'r
 
toyobug's Avatar
 
Join Date: Sep 2008
Location: MS. Gulf Coast
Posts: 154
Thanks: 0
Thanked 1 Time in 1 Post
Default

good insight..thanks Daox.
What kind of $$ difference are you talkin?
toyobug is offline   Reply With Quote
Reply


Tags
cfl, led, lighting

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 06:33 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Ad Management by RedTyger
Inactive Reminders By Icora Web Design