Exploring Hydrocarbon Depletion
smallpoxgirl wrote:they are very directional, so they can be useful in applications like spot lights or flashlights.
Well, yes and no...smallpoxgirl wrote:Turns out LED's aren't really very efficient.
Or desk lights, or kitchen lights, or any time you need light "here" instead of "everywhere."smallpoxgirl wrote:they are very directional, so they can be useful in applications like spot lights or flashlights.
Your case sounds like area lighting (vs task lighting), and I might have recommended a 3W compact fluorescent bulb. They are available, and probably put out considerably more light over the desired area than your LED with a spreader.BabyPeanut wrote:Well I got my bulb. It has a beam spreader that is rated at 80 degrees... At 2 - 2.5 watts it will take all day to use a fraction of the energy a compact fluorescent would use overnight on a timer plus there's no timer using electricity.
There's more than one way to deal with this.gg3 wrote:I'm dyslexic and I can tell you for certain that hard, high-contrast shadows in a work area make it basically unusable for me...
Task lighting is fine in theory, but in practice it needs to have a way to reflect it off some surface and thereby break up the shadows and contrasts.
PhilBiker wrote:Hey I have changed out most if the light bulbs in my house from incandescent to fluorescent.
Maybe in the winter incandescants are more efficient?
The thing is, that to get 1 Watt-hr of heat from electricity at your house takes 3 to 4 Watt-hours of energy at the power plant that generates it. Most likely, that energy comes from natural gas or coal. Meanwhile, your gas furnace puts 80-90% of the heat it generates into your house. Taken as a complete system, it's much more efficient to create the heat you need by burning it at your house than by burning it at the power plant .
PhilBiker wrote:I don't think gas fired water heaters are as rare as you seem to think Monte. My current house and my previous one both had gas fired water heaters, they're the norm around here.
Users browsing this forum: No registered users and 4 guests