VW Polo manuals

Volkswagen Polo Service & Repair Manual: Refrigerant R134a Vapor Pressure Table

The vapor pressure table for every refrigerant is published in literature for refrigeration system engineers. This table makes it possible to determine the vapor pressure acting on the column of liquid in a vessel if the temperature of the vessel is known.
Because each refrigerant has its own characteristic vapor pressure table, refrigerant can be identified by measuring the pressure and temperature.
  Note
At absolute pressure, 0 bar/psi corresponds to absolute vacuum. Normal ambient pressure (positive pressure) corresponds to 1 bar (14.5 psi) absolute pressure. 0 pressure corresponds to an absolute pressure of 1 bar (14.5 psi) on most pressure gauges (indicated by -1 bar (-14.5 psi) below 0 bar/psi).
   
Temperature in °C (°F) Pressure in bar (psi) of R134a
-45 (-49) -0.61 (-8.84)
-40 (-40) -0.49 (-7.10)
-35 (-31) -0.34 (-4.93)
-30 (-22) -0.16 (-2.32)
-25 (-13) 0.06 (0.87)
-20 (-4) 0.32 (4.64)
-15 (5) 0.63 (9.13)
-10 (14) 1.00 (14.5)
-5 (23) 1.43 (20.74)
0 (32) 1.92 (27.84)
5 (41) 2.49 (36.11)
10 (50) 3.13 (45.39)
15 (59) 3.90 (56.56)
20 (68) 4.70 (68.16)
25 (77) 5.63 (81.65)
30 (86) 6.70 (97.17)
35 (95) 7.83 (113.56)
40 (104) 9.10 (131.98)
45 (113) 10.54 (152.86)
50 (122) 12.11 (175.64)
55 (131) 13.83 (200.58)
60 (140) 15.72 (227.99)
65 (149) 17.79 (258.02)
70 (158) 20.05 (290.80)
75 (167) 22.52 (326.62)
80 (176) 25.21 (365.64)
85 (185) 28.14 (408.13)
90 (194) 31.34 (454.54)
Pressure and Boiling Point
The boiling point given in tables for a liquid is always referenced to an atmospheric pressure of 1 bar (14.5 psi). If the pressure acting on a fluid changes, its boi ...

Refrigerant R134a
...

Other materials:

Two-Part HS Optimum Plus Clear Coat
Definition: Two-Part HS Optimum Plus Clear Coat -LZK 769 K07 A5- Edition 04/2013 Product Description The two-part HS optimum plus clear coat is a VOC compliant high solid cle ...

Tire Sealant, Expiration Date
Tire sealant in the bottle has a limited storage life.     Therefore, the expiration date is indicated on the bottle -arrow-. Replace tire sealant when minimum shelf life date has been ...

Refrigerant Circuit, Tracing Leaks, with Electronic Leak Detector -VAG1796
  Note This repair manual describes different methods for detecting leaks in the refrigerant circuit. These methods have been tested and result in success when used correctly. If when searching for compressed air / Nit ...

© 2016-2025 Copyright www.vwpolo.net