Is Passivation to s/s = to Zinc Clear Coating of s/s?
I know passivation is adding a layer of chorosion inhibtor the the surface so can this layer be clear zinc or are these different means of coating s/s?
I am trying to get fimilar with electrical components. I did some BG research on relays. Does this make sense.
1.My systems needs a switch to control a component so that is why I need a relay. It is a micro-switch that will move towards its position(Normally open or Normally Closed) depending...
By testing this showed above the reflector was cooler in temperature. The hottest part was the top part of the element where the edge of the reflector was. This is probably due to the heat rising and stopping + the heat in the rear moving horizontal.
X-Sectional view would be all the heat...
I have a heating element. This heating element is placed on a wall. If I want the heat to be supplied horizontally would a relflector blocking the top of the heating element work?
to prove this are these two statements below correct??
1. Heat rises so by blocking the top of the heating...
Thanks for the replies. The fin heaters we use get pretty hot with the amount of 1 to 6 Kw supplied quickly passing 212F+. I'll keep at it I guess. Lead is good but needed major protection so I am sure it will not be the best bet.
Thanks for the update. As of now we tested the unit and seems I was analytically heating the wrong material so we just used our sensor elements to find the values of temepratures at a very close distance from the heats fins with the fans going on behind them.
As of now I have not come up with...
ok will tryout #15 and see where it lead me...
[(q / ε σ A) + Tc^4)]^-4 = Th. Then with Th known, you can calculate the time, t = m cp (Th - Tc) / q. Accuracy not guaranteed. :)
Are these all the givens??
q=supplied wattage(Watt/Btu)
ε=emissivity of s/s
σ=5.670 400(40)×10−8 W·m−2·K−4 or...
The final word is theoretically/analytically whatever you want to call it before it is really made if in ideal conditions with what I mentioned for that S/S plate only of that size with those properties and tested/supplied with 660watts for 1 min mark( will we have a temp difference of 11,802F...
Does the math make sense at least. The only way I could round this down is I am using the .02 lb of material for a heating fin which 33 of them are used attached to a s/s tube so I could multiply the 600Watts for 33 heating elements instead of using 660 for 1 which you told me would be for a...
Now help me if this makes sense
Q=MCpDeltaT
Q=660Watts supplied for 1 min---> 1 min = .0167 Hrs---> Power Used =660W*.0167Hr = 11Watt-Hr-->Convert to BTU(37.533 Btu)
M=.0265 Lb<--very small s/s fin plate 2"x1.375"x.035"
Cp of stainless steel(.12 Btu/Lb-F)
37.533 = .0265 X .12 X DeltaT...
can someone explain how power relates to temperature?
I now understand that a 100W lightbulb over 1 hour will be 100W-Hr
WRONG:
100W in 1 Hr = Light bulb@100Watts
100W in 2 Hr = Light bulb@200Watts
...
RIGHT
100W in 1 Hr = Light bulb 100Watts-Hr used
100W in 2 Hr = Light bulb...
I apalogize for all the confusion with this question but maybe I am getting confused with this How power relates to temperature!
Does using power at a constant value raise the heat and in turn raise the temperature or does it stay at a constant value over time?
Like you use in your house a...
ok from what I read...
As the 4kW is being supplied to the material it will heat up forever and at the same time the supplied 4 Kw will be removed at the same time due to free convection, radiation, to level the temeperature at one point.
Now this is where I am at...
Q=M*Cp*DeltaT/ T...
I am giving up on finding an exact number for now. Let's start with the basics..
I know that 1 Watt = 1 Joule/Second
That means if I input 4000 Kw into a piece of steel of any sizefor 60 seconds that will produce 240,000 Joules or 240KJ and will give off a temperature hotter than it was...