R245fa pentafluoropropane, hu ua HFC-245FA, lossis tub yees roj R245fa, lossis tus neeg sawv cev ua npuas ncauj R245fais xim tsis muaj xim, pob tshab thiab yooj yim rau cov kua ua kua, nrog hloov pauv, kub taw tes 15.3 ℃, ruaj khov ntawm chav tsev kub thiab siab.
R245fa tuaj yeem raug siv los ua cov khoom noj foaming rau tub yees, daim hlau polyurethane rwb thaiv tsev cov ntaub ntawv. Nws tseem yog cov tub yees thiab siv dav hauv cov organic Rankine phaum hluav taws xob (ORC), dav siv hauv cov khoom siv pov tseg thaum tshav kub qis (flue roj pov tseg cua sov, kev lag luam roj, kev ntsuas kub, thiab lwm yam), hnub ci zog, biomass zog, geothermal kev lag luam tsim hluav taws xob, dej hiav txwv kub sib txawv thiab lwm lub zog tsim hluav taws xob. Kev siv tshuab Rankine lub voj voog tuaj yeem ua kom muaj zog ntau npaum li cas huv thaum uas txo cov pa carbon dioxide tawm. Siv R245fa raws li kev ua haujlwm nruab nrab tuaj yeem ua kom muaj txiaj ntsig zoo ntawm cov organic Rankine lub cev system los ntawm 5% -8%.
Cov Khoom Siv Hauv Cov Khoom Siv Nkoj Cov Tub YeesR245fa lossis tus sawv cev ua npuas ua haujlwm R245fa:
Hauv qab lub siab zoo, nws yog xim tsis muaj xim, pob tshab thiab cov dej ntws tawm tau yooj yim ntawm 15 ° C nrog kev hloov pauv. Nws yog cov roj tsis muaj kob ntawm 20 ° C. Insoluble hauv dej, ua tsis tiav hauv feem ntau cov kuab tshuaj organic xws li ethanol, ether, chloroform, roj, hydrocarbons thiab lwm yam.
Cov khoom ntawm lub cev: molecular phaus 134
Boiling point, (℃, 101.3KPa) 58.8
Qhov chaw cia txias ℃<>
Kev ntsuas kub tseem ceeb, ℃ 256.9
Tus kab mob siab tseem ceeb, Mpa 464.1
Kev ua kua nyeem uas txaus ua kom sov (30 ℃, kg / m3) 82.7
Qhov kub tshwj xeeb ntawm cov kua (30 ℃, KJ / kg.k) 0.33
Isobaric chav tshwj xeeb cua sov (30 ℃& 101.3KPa, KJ / kg.k) 0.22
Kev ntim khoom ntawm tub yees R245fa: lub tog raj kheej steel lossis Isotank
Kev xyuam xim thauj mus los: Muab cia rau hauv qhov chaw txias, cua. Txav deb ntawm hluav taws thiab kub. Lub tsev rau khoom kub yuav tsum tsis pub tshaj 40 ℃. Kaw lub thawv kaw kom nruj. Nws yuav tsum tau muab sib cais los ntawm oxidant.
