E wehewehe kikoʻī i ke ana ʻana o ka mahana o ka thermocouple

- 2021-09-29-

ThermocoupleHe ʻano mea ʻike wela, he ʻano mea kani, thermocouple e ana pololei i ka mahana. ʻO kahi puka pani i haku ʻia me ʻelua mau alakaʻi me nā mea haku mele like ʻole. Ma muli o nā ʻano mea like ʻole, hoʻohua ʻia nā ʻano like ʻole o ka electron diffusion, a hiki ke hana ʻia ma hope o kahi equilibrium paʻa. Ke loaʻa kahi mahana gradient ma nā ʻaoʻao ʻelua, e hoʻopuka ʻia kahi au i loko o ka loop, a e hana ʻia kahi ikaika thermoelectromotive. ʻOi aku ka nui o ka ʻokoʻa wela, ʻoi aku ka nui o kēia manawa. Ma hope o ke ana ʻana i ka ikaika thermoelectromotive, hiki ke ʻike ʻia ka waiwai wela. I ka hoʻomaʻamaʻa, ʻo ka thermocouple kahi mea hoʻololi ikehu e hoʻololi i ka ikehu wela i ka ikehu uila.

ʻO nā pono ʻenehana o nā thermocouple:nā thermocouplehe laulā ke ana wela ana a me ka hana paʻa. ke ana kiʻekiʻe kiʻekiʻe, pili pololei ka thermocouple me ka mea i ana ʻia, a ʻaʻohe mea e hoʻopili ʻia e ka waena waena; wikiwiki ka manawa pane wela, a maʻalahi ka thermocouple i nā loli wela; Nui ka pae ana, hiki i ka thermocouple ke ana i ka mahana mai ka -40 ~ + 1600â "ƒ; kathermocouplehe hana pono a me ka ikaika mīkini maikaʻi. ʻO ke ola lōʻihi a hoʻonoho maʻalahi. Pono e haku ʻia nā kāne galvanic i ʻelua mau mea alakaʻi (a i ʻole semiconductor) me nā waiwai like ʻole akā e hoʻokō ana i kekahi mau koi e hana i kahi loop. Pono e loaʻa ka ʻokoʻa ma waena o ke ana ana a me ka pahu kūmole o ka thermocouple.

Hoʻopili ʻia nā mea hoʻokele a i ʻole semiconductor A a me B o ʻelua mau mea like ʻole e hana i kahi puka pani. Ke loaʻa kahi ʻokoʻa wela ma waena o nā helu hoʻopili ʻelua 1 a me 2 o nā mea hoʻokele A a me B, hoʻokumu ʻia kahi mana electromotive ma waena o nā mea ʻelua, no laila e hoʻokumu ʻia ai kahi au nui ma ka loop. Kapa ʻia kēia hanana ka hopena thermoelectric. Hoʻohana nā Thermocouple i kēia hopena.