Amandla Units. DC amandla: iyunithi

Amandla e-physics siqondwa njengoba isilinganiso usuphothuliwe ngesikhathi esithile ukusebenza inkathi isikhathi lapho wenziwa. Ngaphansi umsebenzi mechanical ehloselwe ingxenye ambalwa of umthelela force emzimbeni, ngenxa lapho uhamba yokugcina emkhathini.

Ungakwazi ukuveza amandla njengoba izinga lokudluliselwa amandla. Okungukuthi, kukhombisa ukusebenza kahle kwe-umshini okuzenzakalelayo. Ngu yokulinganisa amandla kuyacaca ukuthi lo msebenzi wenziwe kahle ngokushesha.

Amandla nesilinganiso iyunithi

Amandla ulinganiswa Watts noma Joules ngomzuzwana. Abashayeli eyaziwa amandla ukumeda amahhashi. By the way, ngaphambi obhekwe umusi izinjini lesi silinganiso akukalwa nhlobo.

Ngolunye usuku, usebenzisa indlela kwemayini, unjiniyela George. White wathatha ngcono yakhe. Ukuze afakazele injini ngcono yakhe wayeqhathanisa ngayo ukusebenza amahhashi. Abantu baye bazisebenzisa lezi zindlela eminyaka. Ngakho-ke noma ubani kwakulula ukucabanga umsebenzi amahhashi okusalungiswa isikhathi esithile.

Ukubuka kubo, White kuqhathaniswa izinjini imodeli umusi, kuye ngokuthi inani amahhashi. Yena Ucwaningo ibalwa ukuthi amandla Ihhashi 746 Watts. Namuhla, wonke umuntu, uyaqiniseka ukuthi kule nombolo ngokucacile overpriced, kodwa amandla iyunithi banquma ukungayisebenzisi nhlobo i ukushintsha.

Esebenzisa wathi ubukhulu ngokomzimba ufunde mayelana nokusebenza, njengoba kukhulisa inyuka umsebenzi for sikhathi isikhathi. iyunithi okunjalo zifane yokukala sekwande kakhulu. Izulu laqala lisetshenziswe ezihlukahlukene izindlela. Ngakho-ke, ngisho noma ngabe Watts futhi ziye zasetshenziswa isikhathi eside, ngoba abaningi amahhashi kuyaqondakala kunabanye amandla amayunithi.

Kanjani ukuqonda amandla yasendlini zikagesi

Amandla Yebo, abonisa nendlu imishini kagesi. Ngo izibani usebenzisa izimiso zayo ezithile, isibonelo ayisithupha Watts. Ama nge okukhulu amandla ukusungula uma kungenakwenzeka, ngoba kungenjalo bayokudla ngokushesha ukuwohloka. Kodwa uma akazange athenge ngesibani esikhipha, futhi LED noma Fluorescent, bazokwazi ukuthi agcwale ukukhanya okukhulu, kuyilapho esiningi amandla kancane.

energy ukusetshenziswa Yiqiniso, kuyinto ngqo wakhona inani amandla. Ngakho-ke, i-abakhiqizi of ama ukukhanya uhlale ensimini ukuze ibe umkhiqizo ngcono. Okwamanje, abathengi uthanda nezinye izinketho, ngaphandle izibani incandescent.

amandla Ezemidlalo

amandla amayunithi zaziwa hhayi kuphela ngokuqondene ukusetshenziswa izindlela. Umqondo amandla akunakubangelwa izilwane kanye nabantu. Ngokwesibonelo, lesi silinganiso ingabalwa lapho umsubathi Ufaka a ibhola noma ezinye imishini wayithola ngenxa yokuthi kwase kumiswe osetshenziswayo amandla, ibanga kanye isikhathi sokusebenza kwawo.

Ungasebenzisa ngisho nezinhlelo ze-computer ngawo Inkomba ibalwa ngenxa wenza ethile umsebenzi kanye nokwethulwa nemingcele.

yokulinganisa zomculo

Dynamometer - idivayisi ekhethekile ngawo amandla kukalwa. Asetshenziswa ukucacisa amandla ne torque. Insimbi isetshenziswa ezihlukahlukene izimboni. Ngokwesibonelo, ukukhombisa amandla injini. Ukuze wenze lokhu, motor esuswa imoto futhi uxhumeke dynamometer. Kodwa kukhona kumadivayisi ukububala ngokuthe edingekayo ngisho ngokusebenzisa isondo.

Kwezemidlalo imithi futhi dynamometers nazo kwandile. Awezenzisi ngokuvamile ibe nezinzwa uxhumeke kwi-computer. Nabo, futhi wenza zonke izilinganiso.

wattage

UJames Watt wasungula injini umusi, kanye kusukela 1889, isilinganiso esithile amandla kagesi baba Watts, kanye kohlelo lamazwe omhlaba yokukala ukubaluleka kufakwe 1960.

Ngo Watts lingalinganiswa hhayi kuphela kagesi kodwa futhi ezishisayo, mechanical noma yimaphi amandla. Liphinde ngokuvamile kwakheka zesi and sub-nezimpinda. Zibizwa ngokuthi ama-ne Ngaphezu igama lesiGreki elisetshenziswe ticalo ezahlukene "ikhilo", "mega" "Giga", njll.:

• 1 kilowatt silingana inkulungwane Watts;
• MW 1 million Watts alinganayo nokunye.

-Hora kilowatt

Esikhathini ngamazwe SI uhlelo akukho amayunithi Ukumeda like-hora kilowatt. Lesi sibalo ingaphandle uhlelo, owethulwa ukuba alandise ngala washisa amandla kagesi. ERussia esebenza nge GOST 8.417-2002 isiqondiso lapho iyunithi amandla yokukala kagesi futhi kusetshenzisiwe ngqo okhethiwe.

Le yunithi Kunconywa ukubhalisa washisa amandla kagesi. Kuyinto ifomu elula kakhulu, okuyinto nemiphumela eyamukelekayo. Ukuphindaphindwa lapha lungasetshenziswa uma kunesidingo. Babukeka efana Watts:

• 1 kilowatt ihora 1000 Wh;
• 1-hora megawatt kulingana 1,000-hora kilowatt, nokunye.

Igama eliphelele Kulotshiwe ukuthi, njengoba sesibonile, nge ikhonco, kanye okufutshane - ngokusebenzisa iphuzu (Wh, kWh).

Njengoba kuboniswe kwamandla kagesi

Ngokwejwayelekile kwamukelekile ukuba akhombise inkomba wathi ngqo nezindlu ithuluzi kagesi. namagama zingenzeka:

• watt futhi kilowatt;
• Wh futhi-hora kilowatt;
• Volt-Amps futhi kVA.

Kakhulu uphawu jikelele ukusetshenziswa amayunithi ezifana Watts noma kilowatts. Uma kukhona zingenziwa iyunithi ngokuthi amandla ovezwa alusebenzise.

Ngokuvamile Watts futhi kilowatts kulinganiswa amandla mechanical ugesi kagesi izinjini, amandla ezishisayo heater kagesi nokunye. D. Kushiwo ikakhulu wamanje amandla mayunithi ku idivayisi okuyinto udzimelela inani ukushisa, futhi izibalo ziyabhekelelwa kakade ngemva kwakhe.

Watt-amahora-hora kilowatt ukukhombisa ukusetshenziswa kwamandla ngoba iyunithi owanikwa isikhathi. Ngokuvamile ngalinye lala masonto abizwa kungabonakala yasendlini basebenzise izinto zikagesi.

Esikhathini ngamazwe SI uhlelo has kagesi power amayunithi, okuyizinto okulingana Watts futhi kilowatts - a volt angu-amperes futhi kVA. yokukala enjalo inikeza ukuze afunde AC. Zisetshenziswa izibalo lobuchwepheshe lapho nemingcele ezibalulekile kagesi.

isiqu esinjalo efanelana nezidingo ubunjiniyela kagesi, lapho amadivayisi ezisebenza kushintshana wamanje, kukhona kokubili amandla asebenzayo futhi esisheshayo. Ngakho-ke, amandla kagesi kunqunywa isamba kulezi zingxenye. Ngokuvamile e VA selisho Amadivayisi amandla ezifana Transformers, inductors, nezinye converters.

Ngesikhathi esifanayo nomkhiqizi Ukhetsa okuyinto amayunithi angakahleleki ucacise ke, kulapho ngakho endabeni imishini ephansi amandla (okungaye, isibonelo, izinto zasendlini kagesi), zonke namagama amathathu bavame luqondane.