6.4. TABOLA DI CONVERSIONE DELLE UNITÁ

PRESSIONE (SISTEMA INTERNAZIONALE- MKS): ML

_

1

T

_

2

bar

atm

kg

F

/cm

2

N/m

2

kPa

psi

mm Hg a 0oC

mmH2Oa4oC

1 bar

1

0,9869

1,0197

1xE05

100

14,5038

750,0627

10.197,4477

1 atm fisica (atm)

1,0132

1

1,0332

1,0132xE05

101,325

14,6959

760

10.332,28

1 atm tca (kgF/cm

2

)

0,9806

0,9678

1

0,9807xE05

98,0665

14,2233

735,5602

10.000,28

1 Pa (1 N/m

2

)

1xE-05

0,9869xE-05

1,0197xE-05

1

0,001

0,000145

0,0075

0,1019

1 kPa

0,01

0,0099

0,01019

1xE03

1

0,1450

7,5006

101,9745

1 psi (lbF/in

2

)

0,0689

0,0681

0,0703

6.894,7573

6,8947

1

51,7150

703,6

1 mm Hg a 0oC

1,3332xE-03

0,0013

1,3595xE-03

133,3222

0,1333

0,0193

1

13,5955

1 mm H

2

O a 4oC

9,8064xE-05

0,9678xE-04

1xE-04

9,8064

0,0098

0,0014

0,0735

1

ENERGIA (SISTEMA INTERNAZIONALE- MKS): ML

2

T

_

2

Kcal

kWh

kJ

BTU

HPh

CVh

1 Kcal

1

1,163xE-03

4,184

3,9682

0,00156

1,5812xE-03

1 kW h

860,3

1

3.600

3.412,96

1,3410

1,3596

1kJ (1kWs)

0,2390

2,777xE-04

1

0,9487

3,7251xE-04

3,7767xE-04

1 BTU

0,2519

2,9307xE-04

1,054

1

3,9301xE-04

3,9847xE-04

1 HP h (USA)

641,1865

0,7457

2684,5195

2.544,43

1

1,0139

1 CV h (métrico)

632,42

0,7355

2.647,7955

2.509,63

0,9863

1

SCALE DI TEMPERATURA

oC: Celsius

-273,16

0

50

100

K: Kelvin

0

273,16

323,16

373,16

F: Fahrenheit

-459,68

32

122

212

R ó Ra: Rankine

0

0

581,68

671,68

R: Reamur

-218,52

0

40

80

CONVERSIONE DELLE TEMPERATURE

C=>F: F=1.8C+32

F => C: C = (F-32)/1,8

K=>C: C=K-273,16

R=>C: C=1,25C

C=>K: K=C+273,16

F => K: K = (F+459,68)/1,8

K=>F: F=1,8K-459,68

R=>F: F=(9/4)R+32

C=>Ra: Ra=1,8C+491,68

F=>Ra: Ra=F+459,68

K=>Ra: Ra=1,8K

R=>K: K= 1,25C+273,16

C=>R: R=0,8C

F => R: R = (F-32)*(4/9)

K=>R: R=0,8K-218,52

R=>Ra: Ra=(9/4)R+491,68

50