Gas siab yog lub siab ntawm cov pa roj phab ntsa, uas yog macroscopic manifestation ntawm ib tug loj tus naj npawb ntawm molecules tsis tu ncua cuam tshuam rau phab ntsa thiab yog ib qho tseem ceeb parameter siv los piav txog lub xeev ntawm lub system. Ntau lub cev thiab tshuaj lom neeg, xws li taw tes, kub taw tes, vapor siab, yuav luag txhua qhov siab-nyob ntawm. Kev kub siab kuj yog ib qho tseem ceeb hauv kev tshawb fawb ntawm cov tshuaj thermodynamics thiab tshuaj kinetics. Yog li ntawd, qhov ntsuas ntawm qhov siab yog qhov tseem ceeb heev.
Cov chav nyob feem ntau yog: bar (bar), pascal (Pa). Ib chav tsev ntawm lub siab, hauv physics, hais txog lub zog ua haujlwm ntsug ntawm qhov chaw ntawm qhov khoom. Chav tsev yog Pascal (abbreviated li Pa Tsab ntawv yog "Pa"). (Hais lus nruj me ntsis, chav tsev ntawm lub siab yuav tsum yog Newton N.) Chav tsev ntawm lub siab yog Pascal, thiab nws yog kev cai hu rau lub siab ntawm lub neej) Hauv Suav teb, peb feem ntau piav txog lub siab ntawm roj li "kilogram" (tsis yog "jin "), chav tsev "kg•f / cm2", yog ib kilogram ntawm siab yog ib kilogram ntawm quab yuam ua rau ib square centimeter.
1Standard atmospheric siab = 760mmHg = 76cmHg = 1.01325 × 105Pa = 10.336m dej kem. 1 tus qauv atmospheric siab
= 101325 N/㎡. (Feem ntau 1 tus qauv huab cua = 1.01 × 105Pa hauv kev suav)
Yog tias koj xav ua qhov xam kom raug, kev sib raug zoo yog raws li hauv qab no:
Kev sib raug zoo ntawm kev sib hloov siab:
1 dyne ib square centimeter (dyn/cm2) = 0.1 Pa (Pa)
1 PAB = 133.322 NAD
1 millimeter mercury (mmHg) = 133.322 Pa (Pa)
1 hli dej kem (mmH2O) = 9.80665 Pa (Pa)
1 engineering atmospheric siab = 98.0665 kilopascals (kPa)
1 kilopascal (kPa) = 0.145 phaus zog ib square inch (psi) = 0.0102 kilogram force per square centimeter (kgf/cm2) = 0.0098 atm (atm)
1 phaus quab yuam ib square inch (psi) = 6.895 kilopascals (kPa) = 0.0703 kilogram quab yuam ib square centimeter (kgf/cm2) = 0.0689 bar (bar) = 0.068 atm (atm)
1 Lub cev atmospheric siab (atm) = 101.325 kilopascals (kPa) = 14.695949400392 phaus quab yuam ib square inch (psi) = 1.01325 bar (bar)
| Cov lus sib piv Standard ntawm cov chav ntsuas siab |
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Post lub sij hawm: Feb-27-2023