So pretty close to my estimated 30kW.
These numbers have to be hand-wavey, because real data doesn't exist for the very small view angles and thick glass we are talking about here.
It needs serious empirical measurement.
I get what you are saying, but I'm not convinced your numbers are any better, or that you are comparing apples with apples here.
Where did your nighttime consumption go?
Video will be back up after I fix the edit and re-upload tomorrow morning, maybe by 10am.
Yes, I really rushed this one. A rare one where SWMBO let me stay back to finish and upload it.
FAIL.
We have two types of surfaces:
1) a semi-smooth walking surface that is capable of stopping a car going 40-mph on a wet surface in the required distance
2) The one you see in the video with the raised hexagons was designed for highway use and can stop a car going 80-mph on a wet surface.
We talked with the civil engineers who conducted the traction testing and they've assured us that the testing covers trucks, cars, motorcycles, and bicycles. So if you don't slip on asphalt or concrete, then you won't slip on our glass.
How long will these Solar Road Panels last?
We're designing our panels to last a minimum of 20 years. Solar cells are the limiting factor: they can continue to work up to 30 years but they're at the end of their life cycle by then.
BTW, their website has a ridiculous 'Clearing the Freakin' Air' page where they try to "bust" some myths surrounding their product -- without including a SINGLE piece of data ANYWHERE on the page.
Any rough numbers for the price of the glass (per square meter) they would need?
I'm not declaring my numbers holy, just saying that the method is a bit more credible/backed up by a reasonable method to get there than just saying that one LED uses 0.5W.
Same way that the nighttime sun went. Away. You run the LEDs proportional to the sunlight. At night, typical lights only need to produce in the order of tens of lux to get reasonable visibility. Existing road markings do nothing other than just reflect that light, whereas the asphalt absorbs it, creating a contrast. With the LEDs, you do the same. I did nothing other than apply the insolation formula to the LED lights.
If you're just trying to get your opinion out there you shouldn't do these messy calculations.
From their FAQ http://www.solarroadways.com/faq.shtml#faqBikesQuoteWhat about motorcycles and bicycles? Won't they slip on the glass surface? What about strollers, skates, skateboards, wheelchairs, etc.?
We have two types of surfaces:
1) a semi-smooth walking surface that is capable of stopping a car going 40-mph on a wet surface in the required distance
2) The one you see in the video with the raised hexagons was designed for highway use and can stop a car going 80-mph on a wet surface.
Here in Minnesota U.S. where we have snow & ice , we use to have studs in our tires .
I think get a bag of them and install on my tires when these show up .
I like the warmth between ice ages
Hmm. I was enthusiastic with this project first, thinking it was great that people where thinking environmentally and such. I’m not an engineer, but I felt alright with the concept, trusting what I do not know with the ones who supposedly do!
Well, It seems my judgement failed me this time. Look at this: www.eevblog.com
How can this be dis-proven?