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[87527]

I'm trying to figure out how a thermopila works but on google I'm not finding anything clear. I'm finding little.
the only thing I read is that it is a series of thermocouples in which the reference and measurement joints are at the same temperature.
Can someone who knows more about me make me clear how these sensors work?

 

[87527]

In particular, I would like to understand how, having a thermopila available, we can build sensors that measure the flow of heat.

 

[Fulvio Romano]

What if you're looking for "termocoppia"?

 

[87527]

What if you're looking for "termocoppia"?

ok but I wanted to understand how the thermopila worked if it has the measuring joints and reference to the same temperature (see thermopila def. on wikipedia)

 

[meccanicamg]

all photoelectric thermopiles have the measuring joints exposed to ultraviolet light, while the reference ones in the dark.
As for radiant power measurement sensors, I don't think that everything is kept at the same temperature (see the technical construction cards) since the center has a dome with thermal insulation. I think the explanation is wrong on wikipedia.

also as you see from this fantastic treatmentyou see how you consider temperature.

I'm sorry, did you never use a thermocouple or build it? take a copper wire ø1 mm and a iron wire ø1 mm long 100 mm. curl together an extreme for no more than 10 mm. take a voltmeter and connect it to the two free thermocouples. take a flame, such as the house gas or a reed or an oxydric flame and scale the end. You'll see you get a delta tension.

 

[87527]

all photoelectric thermopiles have the measuring joints exposed to ultraviolet light, while the reference ones in the dark.
As for radiant power measurement sensors, I don't think that everything is kept at the same temperature (see the technical construction cards) since the center has a dome with thermal insulation. I think the explanation is wrong on wikipedia.

also as you see from this fantastic treatmentView attachment 34141View attachment 34142View attachment 34143you see how you consider temperature.

I'm sorry, did you never use a thermocouple or build it? take a copper wire ø1 mm and a iron wire ø1 mm long 100 mm. curl together an extreme for no more than 10 mm. take a voltmeter and connect it to the two free thermocouples. take a flame, such as the house gas or a reed or an oxydric flame and scale the end. You'll see you get a delta tension.

thank you very kind of explanation. very kind also for the link. In the end, I thought I understood how a thermopila worked, I was very sorry that on wikipedia it was written that reference joint and measurement were at the same temperature. Thanks again.
However I have never used/built a thermocouple but I will have the opportunity to use a short thermopile