Kayayyakin Canjin Lokaci (PCMs) wani nau'in sinadari ne na musamman wanda zai iya sha ko saki babban adadin kuzarin zafi a wani takamaiman zafin jiki, yayin da ake fuskantar canje-canje a yanayin jiki, kamar daga tauri zuwa ruwa ko akasin haka.Wannan kadarar tana sa kayan canjin lokaci suna da mahimman ƙimar aikace-aikacen a cikin sarrafa zafin jiki, ajiyar makamashi, da filayen sarrafa zafi.Mai zuwa shine cikakken bincike na kayan canjin lokaci:
dukiya ta jiki
Babban halayen kayan canjin lokaci shine ikon ɗauka ko saki babban adadin latent zafi a ƙayyadadden zafin jiki (zazzabi canjin lokaci).A cikin tsarin ɗaukar zafi, kayan suna canzawa daga wani lokaci zuwa wani, kamar daga mai ƙarfi zuwa ruwa (narke).A lokacin aikin exothermic, kayan yana canzawa daga ruwa zuwa m (ƙarfafawa).Wannan tsarin jujjuyawar lokaci yakan faru ne a cikin kunkuntar kewayon zafin jiki, yana barin kayan canjin lokaci su sami kwanciyar hankali mai kyau a kusan yanayin zafi.
Manyan iri
Za'a iya rarraba kayan canjin lokaci a cikin waɗannan nau'ikan masu zuwa dangane da kayan sunadarai da filayen aikace-aikacen:
1. Organic PCMs: ciki har da paraffin da fatty acids.Waɗannan kayan suna da kyakkyawan kwanciyar hankali na sinadarai, sake amfani da su, da kewayon yanayin yanayin canjin lokaci da ya dace.
2. Inorganic PCMs: ciki har da saline mafita da karfe mahadi.Ayyukan zafin su yawanci yafi PCMs na halitta, amma suna iya fuskantar matsalolin rabuwa da lalata.
3. PCMs na Biobased: Wannan nau'in PCM ne mai tasowa wanda ya samo asali daga abubuwan halitta na halitta kuma suna da halayen muhalli da dorewa.
yankin aikace-aikace
Ana amfani da kayan canjin lokaci sosai a fannoni da yawa, musamman waɗanda suka haɗa da:
1. Ƙarfin Ƙarfi: Ta hanyar haɗa PCMs cikin kayan gini kamar bango, benaye, ko rufi, za'a iya daidaita yawan zafin jiki na cikin gida yadda ya kamata, rage yawan makamashi don kwandishan da dumama.
2. Ma'ajiyar makamashi ta thermal: PCMs na iya ɗaukar zafi a yanayin zafi mai yawa kuma su saki zafi a ƙananan yanayin zafi, suna taimakawa wajen daidaita wadatar makamashi da buƙatu, musamman a cikin amfani da makamashin da ake sabuntawa kamar hasken rana da makamashin iska.
3. Gudanar da thermal na samfuran lantarki: Yin amfani da PCMs a cikin na'urorin lantarki na iya taimakawa wajen sarrafa zafi da aka haifar yayin aiki, haɓaka haɓakawa, da tsawaita rayuwar na'urar.
4. Sufuri da marufi: Yin amfani da PCMs a cikin abinci da sufuri na magunguna na iya kula da samfurori a ƙarƙashin yanayin zafin jiki masu dacewa kuma tabbatar da ingancin samfurin.
Kalubalen fasaha
Duk da fa'idodi masu mahimmanci na kayan canjin lokaci, har yanzu suna fuskantar wasu ƙalubalen fasaha a cikin aikace-aikace masu amfani, kamar tsawon rayuwa, kwanciyar hankali na thermal, da buƙatar fakiti da fasahar haɗin kai.Ana buƙatar shawo kan waɗannan ƙalubalen ta hanyar ci gaban kimiyyar kayan aiki da fasahar injiniya.
Abubuwan canjin lokaci ana tsammanin su sosai a fagagen makamashin kore da fasaha mai ɗorewa saboda aikin yanayin zafi na musamman da kuma fa'idodin aikace-aikace.
Lokacin aikawa: Juni-20-2024