I-PSI vs PSI: Yintoni umahluko: Ingcaciso elula

Kwihlabathi lobunjineli, ukwenziwa kwemveliso, kunye nolawulo lolwelo, isigama esichanekileyo sisisiseko sokhuseleko kunye nokusebenza kakuhle. Ukuba usebenza neenkqubo zoxinzelelo, iivalvu, okanye iigeyiji, kusenokwenzeka ukuba ukhe wadibana nala magama.I-PSIkwayeI-PSIGNangona zifana, ukuzisebenzisa ngokutshintshana kunokukhokelela kwiimpazamo ezibalulekileyo kuyilo kunye nokusebenza kwenkqubo.

Kule khokelo, siza kuhlalutya umahluko phakathi kwePSI kunye nePSI, sihlolisise ukusetyenziswa kwazo, size sichaze isizathu sokuba ukuqonda lo mahluko kubalulekile kuye nabani na osebenza ngeenkqubo ezixinzelelweyo.

Yintoni iPSI?

I-PSIimele iIiponti nge-intshi yesikwereYiyunithi esisiseko yoxinzelelo esetyenziselwa ukubala ubungakanani bamandla (ngeeponti) asetyenziswa kwindawo enye yesikwere se-intshi yomphezulu.

Nangona kunjalo, igama elithi “PSI” ngokwalo liqhelekile. Ngenxa yokuba uxinzelelo lusoloko luthelekiso phakathi kwamanqaku amabini, ukuthi “PSI” kuphela kunokuba yinto engacacanga. Ngokuqhelekileyo, xa abantu besebenzisa igama elithi “PSI” kwincoko eqhelekileyo, babhekisa kuxinzelelo oluhambelana noxinzelelo lomoya ongqongileyo—kodwa ngokwetekhnoloji, oku kuyinxalenye yesiqingatha sebali. Ukuze sibe ngokuchanekileyo, kufuneka sichaze ukuba silinganisa sisuka kwindawo ecocekileyo okanye sisuka emoyeni osingqongileyo.

Yintoni iPSIG?

I-PSIGimele iIiponti ngeSikwere se-intshi nganyeOlu luvavanyo loxinzelelo olubonayo kwigeyiji yoxinzelelo eqhelekileyo.

U-“G” yeyona nxalenye ibalulekileyo yesi sifinyezo. Sicacisa ukuba umlinganiselo uhambelana noxinzelelo lomoya olujikeleze umoya. Ngamazwi alula, i-PSIG ikuxelela ukuba uxinzelelo *lungaphezulu* kangakanani kwinkqubo kunomoya otyhala kuyo uvela ngaphandle.

- Inqaku leZero:Kwisikali sePSIG, u-“0 PSIG” akuthethi ukuba akukho xinzelelo lupheleleyo. Endaweni yoko, kuthetha ukuba uxinzelelo olungaphakathi kwenkqubo lulingana noxinzelelo lomoya olungaphandle (malunga ne-14.7 PSI kwinqanaba lolwandle).

- Umzekeliso wehlabathi lokwenyani:Ukuba uvuthela itayara yemoto kwaye igeyiji ifundeka njenge-32 PSIG, oko kuthetha ukuba umoya ongaphakathi ungaphezulu kweepawundi ezingama-32 ngesikwere intshi *ngaphezulu* koxinzelelo lomoya.

Umahluko oPhambili phakathi kwePSI kunye nePSI

Umahluko ophambili phakathi kwala magama mabini usekwe kwindlela yawoindawo yokubhekisa.

> *Qaphela: Nangona igama elithi “PSI” lisetyenziswa rhoqo ngokwesiqhelo, kwiimeko zesayensi ezingqongqo, uxinzelelo oluquka umoya womhlaba lubizwa ngokuba yiPSIA (Absolute).*

Ukuze ube nomfanekiso-ngqondweni woku, khawucinge ngombhobho ovaliweyo. Ukuba ususa zonke iimolekyuli zomoya ukuze wenze i-vacuum egqibeleleyo, unayo0 I-PSIA(Ngokupheleleyo). Ukuba uvula loo mbhobho emoyeni kwinqanaba lolwandle, uxinzelelo olungaphakathi luya kunyuka luye14.7 I-PSIA, efundwa ngolu hlobo0 iPSIG.

Ukusetyenziswa kwe-PSI kwiiShishini ezahlukeneyo

Xa isetyenziswa kwimo yayo epheleleyo (edla ngokuchazwa njengeI-PSIA), olu linganiso lubalulekile xa kusetyenziswa apho utshintsho kubude okanye iimeko zomoya zinokuchaphazela inkqubo.

1. Inqwelo-moya kunye neenqwelo-moya:Ii-altimeters kunye neenkqubo zoxinzelelo lweekhabhini zixhomekeke kufundo olupheleleyo loxinzelelo ukuqinisekisa ukhuseleko kwiindawo eziphakamileyo.

2. Itekhnoloji yokucoca nge-vacuum:Kwiinkqubo ezenzelwe ukwenza i-vacuum, izazinzulu zilinganisa ukuba zehle kangakanani ukusuka kuxinzelelo lomoya ukuya kwi-vacuum epheleleyo, efuna izikali zoxinzelelo olupheleleyo.

3. Ukupakishwa kokutya:I-Modified Atmosphere Packaging (MAP) idla ngokusebenzisa izibalo zoxinzelelo olupheleleyo ukuqinisekisa ukuba umxube wegesi ochanekileyo uvalwe ngaphakathi kwiphakheji nokuba imozulu okanye ukuphakama kwesityalo kunjani.

4. Ifriji ye-HVAC:Iingcali zisebenzisa ii-manifold gauges ezifundeka kwi-PSIG, kodwa xa zibala i-superheat kunye ne-subcooling yokutshaja kwenkqubo, zihlala ziguqulela kwi-absolute pressure (PSIA) ukuze kuhambelane ngokuchanekileyo ipropathi ye-thermodynamic.

Ukusetyenziswa kwePSIG kwiinkampani ezahlukeneyo

Ngenxa yokuba ihlabathi esiphila kulo liphantsi koxinzelelo lomoya olungaguqukiyo, i-PSIG yeyona ndlela isebenzayo yokulinganisa izixhobo zemihla ngemihla zoshishino. Iivalvu, iipompo, kunye neepayipi zihlala zilinganiswa kwi-PSIG kuba kufuneka zimelane noxinzelelo *umahluko*.

1. Ukuveliswa kweeValvu:Xaivalvu enoxinzelelo oluphezuluIphepha leenkcazo libonisa uxinzelelo oluphezulu lwe-150 PSIG, oko kuthetha ukuba ivalvu inokusingatha uxinzelelo lwangaphakathi oluyi-150 psi ngaphezu komoya wangaphandle. Ukuba loo valve ithathwe yasiwa encotsheni yentaba, amandla ayo asebenzayo aya kutshintsha, yiyo loo nto iPSIG ilinganiso eliqhelekileyo.

2. Iinkqubo zeHydraulic:Izixhobo zokwakha, ezifana nee-excavators kunye nee-lifti, zisebenzisa i-PSIG ukulinganisa amandla olwelo lwe-hydraulic. Igeyiji ibonisa uxinzelelo oluveliswa yipompo ngaphezu koxinzelelo lomoya.

3. Izityalo Zokucoca Amanzi:Abaqhubi bajonga i-PSIG ukuqinisekisa ukuba imibhobho kunye neetanki zokucoca azixinzelelwanga kakhulu.

4. Izixhobo zoMoya:Ii-impact wrenches kunye nee-air compressors zilinganiswe kwi-PSIG. Itanki ye-compressor egcina umoya kwi-100 PSIG ibamba umoya onobunzima be-100 psi kunomoya wangaphandle, ulungele ukusebenza.

Ukubaluleka Kokuqonda Ukulinganisa Uxinzelelo

Kwifektri yeevalvu okanye kumthengi wemizi-mveliso, ukudideka kwala magama kunokuba kubiza kakhulu kwaye kube yingozi.

- Iingozi zoKhuseleko:Ukuba ivalvu ilinganiswe nge-150 PSI (etolikwa njenge-Absolute), kwaye uyifake kwinkqubo esebenza kwi-135 PSIG, ngokwenene uyibeka phantsi koxinzelelo oluphezulu.149.7 PSIA(135 PSIG + 14.7 atmospheric). Ubuya kusebenza kufutshane nendawo yokusilela ngendlela eyingozi.

- Ukusebenza kakuhle kwenkqubo:Iimpompo kunye neecompressor zixhomekeke kwiinguqu zoxinzelelo ukuhambisa ulwelo. Ukuba uyila inkqubo usebenzisa amanani apheleleyo xa uthetha ngamanani egeyiji, impompo isenokungabi namandla aneleyo okunqoba ukuphakama okanye ukungqubana kwimibhobho.

Iingcamango Ezingachanekanga Eziqhelekileyo Malunga nePSI kunye nePSIG

1. I-PSI iyafana ne-PSI.

Oku akulunganga. Kwiimeko ezininzi zoshishino, igama elithi “PSI” lisetyenziswa njengegama elisetyenziswa rhoqo, kodwa ngokwengcali, ukuba inani livela kwi-standard dial gauge, yiPSIG. Ukuba lubalo olusekelwe kwithiyori oluquka imithetho ye-vacuum okanye igesi, kusenokwenzeka ukuba yiPSIA.

2. Uxinzelelo lomoya alunamsebenzi.

Nangona i-14.7 PSI ingabonakala incinci xa ithelekiswa nenkqubo ye-hydraulic ye-3,000 PSI, ibalulekile kwiinkqubo ezinoxinzelelo oluphantsi (ezifana nokungenisa umoya okanye ukuhambisa igesi) kwaye ibaluleke kakhulu kubunjineli obuchanekileyo.

Indlela yokuguqula phakathi kwePSI kunye nePSI (Absolute)

Ukuze utshintshe ngokuchanekileyo phakathi koxinzelelo lwegeyiji kunye noxinzelelo olupheleleyo, kufuneka uqwalasele uxinzelelo lomoya.

Ifomula:

- I-PSIA = I-PSIG + 14.7(Uxinzelelo lomoya olwandle)
- I-PSIG = I-PSIA – 14.7

Umzekelo:

Ukuba imithambo yoxinzelelo ibonisa ukufundwa kweI-50 PSIGkwigeyiji:
- Uxinzelelo Olupheleleyo (PSIA)= 50 + 14.7 =64.7 I-PSIA

*Qaphela: Kwimisebenzi echanekileyo okanye kwiindawo eziphakamileyo, ixabiso eliqhelekileyo le-14.7 psi kufuneka lilungelelaniswe noxinzelelo lwe-barometric lwendawo.*

Imibuzo Ebuzwa Rhoqo Malunga nePSI kunye nePSIG

Ingaba i-PSI iyafana ne-PSI?

Hayi. I-PSI ligama eliqhelekileyo leepawundi nge-intshi yesikwere. I-PSI ibhekisa ngokukodwa kuxinzelelo olulinganiswe ngokumalunga noxinzelelo lomoya (uxinzelelo lokulinganisa). Ukuba umntu uthi “PSI” malunga nokufundwa kwegeyiji, phantse rhoqo uthetha i-PSI.

Ndingayiguqula njani iPSIG ibe yiPSIA?

Yongeza uxinzelelo lomoya (14.7 psi kwinqanaba lolwandle) kwixabiso lePSIG. Ifomula: PSIA = PSIG + 14.7.

Kutheni iivalvu zilinganiswa kwiPSI endaweni yePSI?

Iivalvu zilinganiswa kwiPSIG kuba kufuneka zimelane nomahluko woxinzelelo phakathi kwangaphakathi kombhobho nomoya ongaphandle. Lo mahluko yiwo obangela uxinzelelo emzimbeni wevalvu.

Isiphelo: Ukukhetha Umlinganiselo Ofanelekileyo Woxinzelelo Lweemfuno Zakho

Ukuqonda umahluko phakathi kwe-**PSIG kunye ne-PSI** kungaphezulu nje kwezinto zobugcisa—yimfuneko yokhuseleko kunye nokuchaneka kolawulo lolwelo.

- Ukuba ujonge igeyiji ekwitanki, kumbhobho, okanye kwivalvu:UjongeI-PSIG.

- Ukuba wenza izibalo zesayensi okanye usebenza ngeenkqubo ezivaliweyo:UdingaI-PSIA(I-PSI epheleleyo).

At UMVELISI WEVALVU YE-NSW, siyila iimveliso zethu ukuze zikwazi ukumelana neemfuno eziqatha zezicelo zoshishino zehlabathi lokwenyani. Zonke iireyithingi zethu zoxinzelelo zibhalwe ngokucacileyo kwi-PSIG ukukunceda ukhethe ivalvu efanelekileyo kwiimeko zakho zokusebenza ezithile. Ukuba unemibuzo malunga neereyithingi zoxinzelelo kwiprojekthi yakho elandelayo, nxibelelana neqela lethu lobunjineli namhlanje.