Misalai 10 na Rage zafi - Encyclopedia

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Misalan raguwar zafi

The raguwar zafi wani al'amari ne na zahiri saboda abin da kwayoyin halitta, ko dai a ciki m, ruwa ko yanayin gas, yana asarar kashi na ma'aunin awo yayin da ake cire zafin jiki.

A wannan ma'anar, shine kishiyar fadada thermal, halinsa na ƙaruwa da yawa saboda ƙaruwa mai ƙarfi a cikin ƙwayoyin zarra sakamakon ƙaruwar zafin jiki.

Duka abubuwan ban mamaki suna faruwa ne sakamakon tasirin ƙwayoyin kwayoyin halitta allura ko janyewar kuzarin kalori, saboda yana yin nasa zarra girgiza a mafi girma ko rateasa daidai da haka, don haka yana buƙatar ƙarin ko spaceasa sarari don motsi.

Ana iya ganin wannan sabon abu a cikin iskar gas, alal misali, ƙarar sa tana amsa zafin jiki, faɗaɗawa da jujjuyawa ta fuskar zafi, da kwangila har ma da shayarwa a fuskar sanyi.

Ire -iren wadannan abubuwan mamaki ne Muhimmiyar mahimmanci a masana'antun gine -gine da gine -gine, tunda zaɓin kayan a fuskar yanayin yanayi na iya wakiltar matsala sosai dangane da kwanciyar hankali na gine -gine.

A ƙarshe, ya kamata a lura cewa ba duk kayan suna amsa iri ɗaya ba ga hanyoyin faɗaɗawa da ƙuntatawa, kuma wasu ma suna amsa ɗaya daga cikin biyun. Misali, ruwa yana faɗaɗa lokacin da aka kawo shi ƙasa da 4 ° C.

Misalan raguwar zafi

Tona kwalba. Wata sananniyar dabara don buɗe tulun da aka ƙera da ƙarfe shine faɗaɗa su ta amfani da zafi, tunda bayan kashe lokaci mai yawa a cikin firiji ko injin daskarewa, ƙarfe ya yi kwangilar kuma yana da wahalar juyawa.
Ayyukan gas. Ta hanyar sanyaya iskar gas zuwa wani matsayi, ana haifar da ƙuntatawa na zafi ta yadda barbashi zai iya canza tsarin tsari tsakanin su don haka ya zama ruwa. An san wannan tsari da santsi kuma galibi ana samar da shi ta hanyar bambance -bambancen matsin lamba, yana tilasta barbashi suyi kwangila ta hanyar muhalli.
Ruwan daskarewa. Ruwa yana faɗaɗa sananne yayin da yake kusantar wurin tafasa (100 ° C), kuma yana yin kwangila yayin da yake gangarowa zuwa 4 ° C, yana samun mafi girman matsayi. yawa (mafi kusanci tsakanin barbashi). Da zarar ƙasa da zafin jiki, yana ƙara faɗaɗa kaɗan lokacin da ya zama ƙasa mai ƙarfi.
Zazzabin zafi. Bayyanawa ga ƙaruwar zafin rana da rana da raguwa da daddare, a cikin yanayin canjin yanayin zafi sosai, yana haifar da rushewar duwatsu da m kayan na muhalli, wanda ke ƙaruwa da rana da kwangila da daddare, don haka yana haɓaka asarar ƙarancin al'adarsu.
Cold ƙanƙance taro. A cikin masana'antun masana'antu da yawa, ana haɗa kayan masarufi (flanges, bututu, yanki lever) daga babban taron su, lokacin da aka faɗaɗa su, tun daga lokacin, yayin da suke sanyi, guntun za su yi kwangila kuma su ci gaba da kasancewa a wurin.
Fale -falen yumbura. Yumbu don amfanin gida yana da saukin kamuwa da faɗaɗawa da ƙanƙancewa, kuma saboda wannan dalili galibi yana kewaye da aikace -aikacen na roba lokacin gyara shi a wuri, don ci gaba da danna shi a lokutan ƙanƙancewa da cushioned a lokuta na dilation.
Thermometers. Kasancewa a karfe da kuma ruwa, mercury yana ba da amsa sosai ga faɗaɗa zafi, yana faɗaɗa cikin zafi da yin kwangila a cikin sanyi, don haka yana ba da damar nuna canje -canje a yanayin zafi.
Rufin gidajen. A lokacin hunturu, kayan gine -gine kan yi kwangila, wanda ke haifar da nakasa kama da na faɗaɗa su a lokacin bazara. Wannan kuma saboda sautin halayen gidaje na katako lokacin da wannan kayan yayi sanyi da kwangila da daddare.
Girgizar zafi. Ƙaddamar da wasu kayan da aka faɗaɗa sosai ta hanyar aikin zafi zuwa asarar kwatsam zazzabi (guga na ruwa, alal misali), zai haifar da ƙuntatawa mai sauri da tashin hankali, don haka yana haifar da fasa ko ɓarna a cikin kayan.
Gudanar da gilashi. Shahararren gwajin yadda ake saka dukan dafaffen kwai a cikin kwalbar gilashi ya dogara da wannan ƙa'idar. Gilashin yana da zafi don faɗaɗa shi har sai kwai ya iya wucewa ta bakin, sannan a sanyaya shi don ya ƙulla shi ya mayar da shi gwargwadon girmansa.