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EXPANSION AND ISENTROPIC COMPRESSION OF REAL AIR BETWEEN 223 AND 723 K (-50 AND 450 DEG C).

SUR L'EXPANSION ET LA COMPRESSION ISENTROPIQUE DE L'AIR REEL ENTRE 223 ET 723 K (-50 ET 450 DEG C).

Author(s) : KOUREMENOS D. A., ANTONOPOULOS K. A.

Type of article: Article

Summary

THE CONVENTIONAL WAY OF CALCULATING AIR EXPANSION OR ISENTROPIC COMPRESSION USES THE EQUATIONS OF THE ISENTROPIC CONVERSION OF IDEAL GASES. THE AUTHORS SHOW THAT THIS PRACTICE MAY RESULT IN ERRORS WHICH BECOME CONSIDERABLE FOR LOW TEMPERATURES AND HIGH PRESSURES, BUT THAT THESE EQUATIONS MAY ACCURATELY DESCRIBE THE ISENTROPIC CONVERSION OF AIR (AND REAL GASES) IF THE GAMMA EXPONENT IS REPLACED BY NEW EXPONENTS, CORRESPONDING TO EACH EQUATION. ANALYTICAL EXPRESSIONS ARE PRESENTED WITH THE EXPONENTS INTRODUCED AND THEIR VALUE IS CALCULATED IN THE CASE OF AIR FOR PRESSURES OF 100 TO 10,000 KILOPASCALS AND TEMPERATURES OF 223 TO 723 K.

Details

  • Original title: SUR L'EXPANSION ET LA COMPRESSION ISENTROPIQUE DE L'AIR REEL ENTRE 223 ET 723 K (-50 ET 450 DEG C).
  • Record ID : 1986-1814
  • Languages: French
  • Source: Entropie - vol. 21 - n. 125-126
  • Publication date: 1985
  • Document available for consultation in the library of the IIR headquarters only.

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