Electrical thermal question
Electrical thermal question
(OP)
Its been a few years since I had to do any thermal analysis. I have acclimated myself with the software. However, I have several generic electrical components (self contained video encoders, solid state PC, splitters etc) that I have power usage for, but not idea how much of the power is rejected as heat.
Is there a way to estimate this? Or should I just do the analysis based on max power in as max heat out? Obviously things like relays, etc I wouldn't do that.
Is there a way to estimate this? Or should I just do the analysis based on max power in as max heat out? Obviously things like relays, etc I wouldn't do that.





RE: Electrical thermal question
Easiest and quickest way - but don't forget that this is from a Structural guy - who remains lazy and always conservative.
RE: Electrical thermal question
And when they do those things they get hot. Then that heat is rejected into the space.
Energy in = Energy out
RE: Electrical thermal question
RE: Electrical thermal question
As for the other compoents, if they're on, they're consuming. There would be no obvious duty cycle to consider.
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RE: Electrical thermal question
It is a tracking/video system (PTZ), and when it is not in motion, only the video stuff should be making heat. The stepper motors are holding, but the controller and hardware put off a lot less heat than when moving. Start/Stop is probably highest current, then moving, then stationer. The system is well balanced (CG) so hold current should be low.
Anyway, so it sounds like there is little argument to starting my calculations based on 100% of power consumed is converted to heat for video switches/splitters, ethernet hubs, etc etc?
The analysis is only looking at each sub COT part, inside a ruggedized box. Not going to board level or anything. Its been tested on the bench, but they need analysis to back it up-> and I plan to add solar loading in my analysis. I do not have access to bench test data to verify my results. Stoopid, but political :)
RE: Electrical thermal question