Homework Statement
how many photons does the sun generate to knock one electron across the bandgap in a PV panel? I am doing a college level night school course on Photovoltaics and I have to do a short presentation on photons and how they produce useable energy. I thought it would be...
how about this one?
"Heavier-than-air flying machines are impossible." -- Lord Kelvin, President, Royal Society, 1895
Or this?
"Everything that can be invented has been invented." -- Charles H. Duell, Commissioner, U.S. Office of Patents, 1899
First I have to say that the reading comprehension on this site is terrible!
I understand your question. I know I will get some flack for saying this, but I think you should encourage your father to experiment, but maybe not bet the farm on the PMM. Here is a quote.
There is not the...
Thats a great idea. You call them HRV's and we have one. Unfortunately, it is not close to the dryer, but it is a great idea for new houses. They could all be vented through the HRV and get free heat.
Our house is in the Toronto area. It is fairly tight with double pane windows.
As for...
Thanks for the reply.
I am surprised it would take such a small amount of air to raise the humidity. My understanding is that the humidifiers that you mount on the side of your furnace do very little to raise humidity. I crank mine to the highest setting and it runs all winter and the house...
I am trying to get an idea of how much water vapour is in the air in my house, and how much water it would take to raise the humidity.
Lets say that my house has a floor space of of about 170 sq meters with ceilings of 2.5 meters for a total volume of 425 cubic meters. Assume an air...