Uila UilaPānaehana

Ka Mana o ke Kānāwai a Watt (Nā noi - Nā hoʻoikaika kino)

Pila lawelawe uila pili i ka ʻai ʻana o ka uila uilaNo laila, he mea maikaʻi loa e hoʻomaopopo he aha ia, pehea ke ana ʻana a pehea e hoʻemi ai i ka ʻai ma ke noi ʻana i kā Watt kānāwai. Eia hou, he loli maʻamau ia no ke aʻo ʻana i nā pūnaewele uila, a i ka hoʻolālā ʻana i nā hāme uila.

Ua hoʻokumu ka ʻepekema Watt i kahi kānāwai, kapa ʻia ka inoa ma hope ona, i ʻae ai iā mākou e helu i kēia loli koʻikoʻi. A laila, ke aʻo ʻana i kēia kānāwai a me kāna mau noi.

NA HANA KUMU:

  • Kaapuni uila: Hoʻohui o nā uila uila i hiki ai i kahi au uila ke kahe.
  • Uila uila: Kahe kahe uila no kēlā me kēia manawa ma o ka mea conductive. Ana ʻia ia i nā amps (A).
  • Uila hoʻopilikia: ʻIke pū ʻia me ka uila uila a i ʻole ʻokoʻa hiki. ʻO ia ka ikehu e koi ʻia e hoʻoneʻe i kahi hoʻoiho uila ma o kahi kumu. Ana ʻia ia i nā volts (V).
  • Ike: Ka hiki ke hana i ka hana. Ana ʻia ia i ka joule (J), a i ʻole nā ​​watt-hola (Wh).
  • Uila uila: ka nui o ka ikehu e lawe a lawe ʻia paha i kahi mea i kekahi manawa i hāʻawi ʻia. Ua ana ʻia ka uila uila i nā watt a i ʻole watts, ua hōʻailona ʻia e ka leka W.

Malia paha ʻoe hoihoi i: ʻO ke kānāwai ʻo Ohm a me kāna mau mea huna, nā hoʻoikaika kino a me nā mea a ia e hoʻokumu ai

ʻO ke kānāwai ʻo Ohm a me kāna huna ʻatikala huna
citeia.com

Kānāwai ʻo Watt

Wahi a kā Watt Law that "ʻO ka mana uila e hoʻopau a hāʻawi paha kahi mea i hoʻoholo ʻia e ka uila a me ke kahe e kahe ana ma o ka hāmeʻa."

Hāʻawi ʻia ka mana uila o kahi hāmeʻa e kahi ʻōlelo:

P = V x I

Ana ʻia ka uila uila ma watts (W). Hoʻohana pinepine ʻia ka "triangle mana" ma ke Kii 1 e hoʻoholo ai i ka mana, uila, a i ʻole ia uila.

Kānāwai Power Triangle Watt's Law
Hōʻike 1. Triangle Mana Uila (https://citeia.com)

I ke kiʻi 2 hōʻike ʻia nā formula i loko o ka mana triangle.

Nā Kaulike - Law Triangle Power Electric Watt's Law
Kiʻi 2. Nā Kaulike - Triangle Mana Uila (https://citeia.com)

James Watt (Greenok, Kekokia, 1736-1819)

He ʻenekini mīkini, mea hana, a me ke kemika. I ka 1775 ua hana ʻo ia i nā ʻenekini mahu, mahalo i kāna kōkua i ka hoʻomohala ʻana o kēia mau mīkini, hoʻomaka ka hoʻomohala ʻoihana. ʻO ia ka mea nāna i hana i ka ʻenekini rotary, ʻenekini hopena pālua, mea hana hōʻike kaomi mahu, a me nā mea ʻē aʻe.

I ka ʻōnaehana International o nā anakuhi, ʻo ka wae no ka mana ka "watt" (Watt, W) no ka hoʻohanohano ʻana i kēia paionia.

Ka helu ʻana i ka hoʻohana ʻana i ka ikehu a me ka lawelawe ʻana i ka lawelawe uila me ka hoʻohana ʻana i kā Watt law

Ke hoʻomaka nei mai ka ʻoiaʻiʻo o ka mana uila ka nui o ka ikehu i hāʻawi ʻia a lawe ʻia e kahi mea i kahi manawa i hāʻawi ʻia, hāʻawi ʻia ka ikehu e ka mana i ke kiʻi 3.

Kumumanaʻo - ka helu pono ʻana i ka ikehu
Hōʻike 3. Nā Kumumanaʻo - Hoʻomaulia ikehu (https://citeia.com)

Ana pinepine ʻia ka ikehu uila ma ka anakuhi Wh, ʻoiai e hiki ke ana ʻia i ka joule (1 J = 1 Ws), a i ʻole ma ka horsepower (hp). E hana i nā ana ʻokoʻa e paipai mākou iā ʻoe e heluhelu i kā mākou ʻatikala mea kani uila.

Hoʻohana maʻamau 1 ke noi nei i ko Watt kānāwai 

No ka mea i kiʻi 4, e helu:

  1. Mana komo hewa
  2. Hoʻokomo ʻia ka ikehu no 60 kekona
Hoʻoikaika kānāwai a Watt
Kiʻi 4. Hana 1 (https://citeia.com)

Pāʻoihana Hoʻoikaika 1

A.- Hoʻoholo ʻia ka mana uila i lawe ʻia e ka mea e like me ke kiʻi 5.

I ka ho omaulia ana o ka mana uila
Hōʻike 5. Ka helu ʻana i ka mana uila (https://citeia.com)

B.- Ka ikehu i komo i loko

Ikaika ikehu
Hoʻokomo ka mana i ka ikehu

Hualoaʻa:

p = 10 W; Ikehu = 600 J

Pau ka ikehu uila:

Hoʻokumu nā mea lawelawe uila i nā uku e like me ka hoʻohana uila- Hoʻohana ka uila i ka mana i hoʻopau ʻia i kēlā me kēia hola. Ana ʻia ia i nā hola kilowatt (kWh), a i ʻole ka horsepower (hp).


Hoʻohana uila = ikehu = pt

Hoʻohana maʻamau 2 ke noi nei i ko Watt kānāwai

No kahi uaki ma ke Kiʻi 8, kūʻai ʻia kahi pakuhi lithium 3-V. Loaʻa ka ikehu i 6.000 joule i ka hale hana. Ke ʻike nei e hoʻopau ana ka uaki i kahi au uila o 0.0001 A, i nā lā ehia e lawe ai e pani i ka pakuhi?

Pāʻoihana Hoʻoikaika 2

Hoʻoholo ʻia ka mana uila i hoʻopau ʻia e ka mea helu me ka hoʻohana ʻana i kā Watt Law:

uila uila
Uila mana uila

Inā hāʻawi ʻia ka ikehu e ka calculator e ka pilina Energy = pt, ka hoʻonā ʻana i ka manawa "t", a me ka hoʻololi ʻana i nā waiwai o ka ikehu a me ka mana uila, loaʻa ka manawa ola o ka pila. E nānā i ke kiʻi 6

Ka helu manawa ola o ka uila
Kiʻi 6. ʻO ka helu manawa ola pākiko (https://citeia.com)

Hiki i ka pila ke mālama i ka mīkini helu ma 20.000.000 kekona, a ua like ia me 7,7 mau mahina.

Hualoaʻa:

Pono e hoʻololi i ka pakuhi uaki ma hope o 7 mau mahina.

Hoʻohana maʻamau 3 ke noi nei i ko Watt kānāwai

Koi ʻia e ʻike i ke kuhi o nā lilo o ka mahina i ka lawelawe uila no kahi kūloko, me ka ʻike he 0,5 $ / kWh ka uku no ka uila. Hōʻike ka helu 7 i nā hāmeʻa e hoʻopau i ka uila ma loko o ka wahi:

  • 30 W kelepona kelepona, e hana ana i nā hola 4 i ka lā
  • Papahana kamepiula, 120 W, e hana nei i 8 mau hola i ka lā
  • Uila Incandescent, 60 W, ke hana nei i 8 mau hola i ka lā
  • Kukui pākaukau, 30 W, hana i 2 mau hola i ka lā
  • Kamepiula lawe kamepiula, 60 W, e hana ana i 2 mau hola i ka lā
  • TV, 20 W, ke hana nei 8 mau hola i ka lā
Hoʻohana mana
Hōʻike 7 Hana 3 (https://citeia.com)

Loaʻa:

E hoʻoholo ai i ka hoʻohana uila, ka pili pili o ka hoʻohana ʻana i ka Energy = pt. 30 W a hoʻohana ʻia i 4 mau hola i ka lā, e hoʻopau ia 120 Wh a i ʻole 0.120Kwh i kēlā me kēia lā, e like me ka mea i hōʻike ʻia ma ke kiʻi 8.

I ka ho omaulia o ka uila uila o ke kelepona kālā (laʻana)
Hōʻike 8. Heluhelu ʻana i ka hoʻohana uila o ka hoʻoiho kelepona (https://citeia.com)

Hōʻike ka Pakuhi 1 i ka helu ʻana o ka hoʻohana uila o nā hāmeʻa kūloko.  Pau ka 1.900 Wh a i ʻole 1.9kWh i kēlā me kēia lā.

I ka ho omaulia ana o ka hoʻohana uila uila 3 Law's Law
Papa 1 Ka helu ʻana i ka hoʻohana uila i ka hoʻoikaika kino 3 (https://citeia.com)
Formula Hoʻohana ikehu mahina
Formula Hoʻohana ikehu mahina

Me ka helu o 0,5 $ / kWh, e uku ke lawelawe uila:

Hoʻolālā Hoʻolālā Uila Uila
Hoʻolālā Hoʻolālā Uila Uila

Hualoaʻa:

ʻO ke kumukūʻai o ka lawelawe uila ma nā wahi he $ 28,5 i kēlā me kēia mahina, no ka ʻai ʻana o 57 kWh i kēlā me kēia mahina.

ʻAha kūkā hōʻailona passive:

Hiki i kahi mea ke komo a hāʻawi i ka ikehu. Ke loaʻa ka mana uila o kekahi mea i kahi hōʻailona maikaʻi, ke omo nei ka mea i ka ikehu. Inā maikaʻi ʻole ka mana uila, ke hāʻawi nei ka mea i ka ikehu uila. E nānā i ke kiʻi 9

ʻO ka hōʻailona o ke kānāwai uila ʻo Watt
Hōʻike 9 ʻElima Mana Uila (https://citeia.com)

Ua hoʻokumu ʻia ma ke ʻano he "passive sign Convention" kēlā mana uila:

  • He maikaʻi inā komo ka ʻikena ma o ka hopena maikaʻi o ka uila i loko o ka element.
  • He maikaʻi ʻole inā komo ka ʻikena ma o ka hopena maikaʻi ʻole. E nānā i ke kiʻi 10
ʻO ke kānāwai ʻo Watt Convention Convention
Hōʻike 10. ʻO ka hālāwai hōʻailona passive (https://citeia.com)

Hana 4 e noi nei i kā Watt kānāwai

No nā mea i hōʻike ʻia i ke kiʻi 11, e helu i ka mana uila me ka hoʻohana ʻana i ka ʻaelike hōʻailona maikaʻi a kuhikuhi inā e hoʻolako a lawe paha ka mea i ka ikehu:

mana uila Watt kānāwai
Kiʻi 11. Hana 4 (https://citeia.com)

Loaʻa:

Hōʻike ka helu 12 i ka helu ʻana o ka mana uila i kēlā me kēia hāmeʻa.

Ka helu ʻana i ka mana uila me ke kānāwai o watt
Hōʻike 12. Ka helu helu uila uila - hoʻoikaika 4 (https://citeia.com)

Hualoaʻa

TO. (Makahiki waiwai A) Ke komo i kēia manawa ma o ka hopena maikaʻi, maikaʻi ka mana:

p = 20W, komo ka mole i ka ikehu.

B. (Ka loaʻa kālā no ka hoʻoikaika kino B) Ke komo i kēia manawa ma o ka hopena maikaʻi, maikaʻi ka mana:

p = - 6 W, hoʻolako ka mea i ka mana.

Nā Hopena no kā Law Watt:

ʻO ka uila uila, ana ʻia i nā watts (W), hōʻike i ka wikiwiki o ka ikehu uila i hiki ke hoʻololi ʻia.

Hāʻawi ke kānāwai a Watt i ka hoʻohālikelike no ka helu ʻana o ka mana uila i nā ʻōnaehana uila, e hoʻokumu ana i ka pilina pololei ma waena o ka mana, ka uila a me ke au uila: p = vi

Pono ke aʻo ʻana i ka mana uila e hoʻoholo i ka hana o nā lakohana, i ka hoʻolālā o ka mea like e hōʻemi ai i ka hoʻohana uila, no ka hōʻiliʻili o ka lawelawe uila, i waena o nā noi.

Ke hoʻopau ka ikehu i ka ikehu ka mana uila, inā hāʻawi ia i ka ikehu he maikaʻi ʻole ka mana. No ke kālailai ʻana i ka mana i nā kaapuni uila, hoʻohana mau ʻia ke kuʻikahi hōʻailona maikaʻi, kahi e hōʻike ai he maikaʻi ka mana o kahi mea ke komo ka uila i loko o ka pahu maikaʻi.

Ma kā mākou pūnaewele hiki iā ʻoe ke loaʻa: Ke kānāwai a Kirchhoff, he aha ka mea i hoʻokumu ai a pehea e noi ai

Nā Kanawai o Kirchhoff ʻAoʻao Cover
citeia.com

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