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My Parabolic Trough Water Heater | 27 comments (27 topical, editorial)

Re: My Parabolic Trough Water Heater (3.00 / 0) (#12)
by TomW on Wed Sep 3rd, 2008 at 12:37:37 PM MST
(User Info)

BB;

I wonder if there is a mechanical method of drawing it like there is for an ellipse, and obviously a circle. A parabola is a conic section like an ellipse and a hyperbola, so there is definitely a good shot.

mkseps posted this link above in #9 I think:

http://home.germany.net/100-441770/amsi-model.html

It looks easy just a T square, string, a pencil and a couple pins. No math just draw it.

Tom

"Education consists mainly of what we have unlearned."--Mark Twain
[ Parent ]

Re: My Parabolic Trough Water Heater (3.00 / 0) (#13)
by BigBreaker on Thu Sep 4th, 2008 at 07:36:40 AM MST
(User Info)

Very neat link - thank you. I was going to suggest approximating a parabola with a very eccentric ellipse. You can use just a string to make an ellipse so it requires very little in the way of equpiment.

Adding in a t-square is no great burden and using it in the way suggested on that website looks easy and accurate - no approximations. I like it.

[ Parent ]

My Parabolic Trough Water Heater | 27 comments (27 topical, 0 editorial)

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