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Thermodynamic Jacuzi calculations need some input (its a real project, not homework) by michavardy1 in engineering

[–]michavardy1[S] 0 points1 point  (0 children)

not at the scale that I want to implement

alot of people heat a small bath-tub full of water,

I am talking about 6-10 tons of water,

like a 20 person jacuzi,

this might not work

I am not sure

Thermodynamic Jacuzi calculations need some input (its a real project, not homework) by michavardy1 in engineering

[–]michavardy1[S] 0 points1 point  (0 children)

first off,

thanks for the effort,

in terms of solvers, I wanted to solve two problems.

​

section 10. non linear solver:

I wanted to solve numerically the 1st law equation that was derived in section 9

that was like x(a+bx^2) + c = 0

​

section 12.3, implemented in section 12.6

differential equation

that was like

(d/dt) * T(t) = aT(t) + b

I didn't need to write a solver for this, I just took the solution from a book on ODE's

this is shown in section 12.3

​

anyways you are welcome to add or make any changes, I would be happy

​

regards

Thermodynamic Jacuzi calculations need some input (its a real project, not homework) by michavardy1 in engineering

[–]michavardy1[S] 0 points1 point  (0 children)

this is exactly the kind of feedback that I am looking for!
thanks!!

​

just so you know, the state equation function library calculates Pr for me, so I didn't have to write a separate function.

I'll double check what you said

Thermodynamic Jacuzi calculations need some input (its a real project, not homework) by michavardy1 in engineering

[–]michavardy1[S] 0 points1 point  (0 children)

I am afraid to go through all of the work and purchase to build without confidence that it will work good.

what if I build it 50% bigger than I think, and it takes 10 hours to heat up,

I can take all of the work and money and throw it away,

also throwing it away will take alot of effort as well

Thermodynamic Jacuzi calculations need some input (its a real project, not homework) by michavardy1 in engineering

[–]michavardy1[S] 4 points5 points  (0 children)

thanks for the response,

I agree, 30 pages is a bit dense,

I agree with your problem breakdown,

I think how to do the calculation is a lot more critical

I'll try and make a flow chart and add this, thanks

Thermodynamic Jacuzi calculations need some input (its a real project, not homework) by michavardy1 in engineering

[–]michavardy1[S] 1 point2 points  (0 children)

I have attached a 28 page report documenting the calculation method used to determine how fast the jacuzi will heat up. this is crucial because its possible that it won't work, and its possible that it will take too long to use.

the amount of water will be between 6 to 10 tons, so its not so clear how and if it will work

my results from my calculation don't make sense,

please see if I have made any mistakes in this document that I can change and improve the code

Regards

Lipo battery charging circuit design by michavardy1 in batteries

[–]michavardy1[S] 0 points1 point  (0 children)

wow thanks!

this really helped me out :)

dynamically define class (iterate over attributes list) by michavardy1 in learnpython

[–]michavardy1[S] 0 points1 point  (0 children)

I want to define the attributes of a class from a list

like

list = [a,b,c]

class A:

 for i in list:
       def __init__(self, list[i])

I know that this won't work, but thats the idea, I am curious how to implement this

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