temperature and pressure

[juma]

my refrigerant compressor is bitzer HSN 7471-75 55KW and condenser cooling water temperatures are 80F.please can u advice me the working pressures of suction, discharge and liquidline using R404A.

[Josip]

Hi, Juma :)


my refrigerant compressor is bitzer HSN 7471-75 55KW and condenser cooling water temperatures are 80F.please can u advice me the working pressures of suction, discharge and liquidline using R404A.

check this ...http://www.bitzer.de/eng/productservice/p3/596

your suction pressure depend on your system .... A/C, cooling, freezing .... suction pressure you control with your compressor and condensing pressure with your condenser, of course within some limits ....


Solkane® 404A - Datasheet http://www.solvay-fluor.com/cda/images/pixel.gif http://www.solvay-fluor.com/cda/images/pixel.gif http://www.solvay-fluor.com/cda/images/pixel.gif

The product R404A is sold by Solvay under license. See the full warning (http://www.solvay-fluor.com/docroot/fluor/static_files/attachments/disclaimer_404a.htm)

Physical properties
Chemical name Pentafluorethane/1,1,1-Trifluorethane/1,1,1-Tetrafluorethane Chemical formula CHF2-CF3/CH3-CF3/CF3-CH2F
Molecular weight kg/kmol 97.60
Boiling point at 1.013 bar °C -46.4/-45.7
Boiling temperature / dew temperature
Critical temperature °C 72.07
Critical pressure bar 37.32
Critical density kg/m3 485
Critical volume m3/kg 2.06 x 10-3 Density liquid1) kg/m3 1045
Density saturated vapour1) kg/m3 64.033
Heat of vaporization1) kJ/kg 143.68
Specific heat capacity1) (liquid) kJ/kgK 1.64
Specific heat capacity2) (vapour) kJ/kgK 1.03 1) at 25 °C 2) at 25 °C and 1.013 bar


see this MSDS - material safety data sheet...

http://www.refrigerants.com/msds/r404a.pdf

and ptchart ... http://www.refrigerants.com/pics/ptchart.pdf

http://www.solvay-fluor.com/docroot/fluor/static_files/attachments/dampf_404a_e.pdf

hope this will help a little ...

Best regards, Josip :)