6
Technical Information
Service Manual
HC R290 Refrigerant Lssues
Basics
HC R-290 (propane) is an odourless and colourless gas of the group of hydrocarbons.
HC R-290 is heavier than air and at high concentrations can cause
narcotic effects and eventually asphyxiation.
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g/m3 to 170 g/m3 in air. The auto-ignition temperature is about 470°C.
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present (as with most other refrigerants).
Propane is often used as a fuel such as for heating or barbecues. However, for
use on refrigeration systems, fuel-grade propane is not suitable since it contains
high levels of impurities, which would damage the refrigeration system and may
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Please notice that the unit is filled with propane. Details to this refrigerant are found in chapter “refrigerant”. Propane is highly
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of people and material.
The structural formula of HC R-290 (propane)
HC R-290 refrig-
erant has a high
grade of purity.
Propane as a
cooking gas is
not useful for
refrigeration
purpose!
I m p o r t a n t R e f r i g e r a n t P r o p e r t i e s a n d
Parameters:
Molecular formula
C3H8
Melting point [°C]
-188
Boiling point under atmospheric pressure [°C]
-42
Molar mass [g mol -1]
44,10
Critical temperature [ °C]
96,8
Critical pressure [bar]
42
Practical limit [g/m3 ]
8
!=$*{
38
!=
2,1
"## !"=$*{
171
"## !"=
9,5
Ignition temperature [ °C]
470
Read More!
Guidlines for the
safe use of hydro-
carbon refrige-
rants
GIZ—PROKLIMA
http://www.gtz.de/
proklima
