Recent content by derekpearcy

I'm making a solar heater, which produces heat inside of an insulated box with a glass window on the front. The fan is to take air from in the house, run it thru the heater, then back into the house. So I have an input and an output duct. One of the things I did notice is that having the...

I understand the idea with the pressure. So ideally, you want a duct the same size as the fan for it to work properly right? Also, another aspect of it I was wondering was this: Does having the fan pushing air thru a duct versus pulling air thru a duct make a difference? I noticed that if...

Here is an interesting question that arose during some random things I was doing: If you have a 4" duct, and have TWO 4" fans that you want to connect to it, how does that work? Both are 200 cubic feet per minute, and I want something that will do 400 cubic feet a minute. Its about 4x cheaper...

You can actually see the heat rising on the floor inside. So I covered the opening, then opened it quickly, and then marked the distant the visible heat traveled in 1 second. It was about 2 feet, so I guess its going to rise at about 2 feet per second... But this isn't anything official...

Hello everyone, I'm new here, so this is my first post on here. I've never taken a physics class in my life, but love the stuff. I'm an avid solar researcher. Not photovoltaic panels, but more in the infrared spectrum since that compromises nearly 50% of the light from the sun and could be...