Page 152 - Root Cause Failure Analysis

140 Root Cause Failure Analysis

Figure 1&11 kaf spring configuration (Gibbs 1971).

the rod. The amount of heat generated can be considerable, particularly when moderate
to high compression ratios are involved. This can result in undesirably high operating
temperatures.
Most compressors use some method to dissipate a portion of this heat to reduce the
cylinder wall and discharge gas temperatures. The following are advantages of cylin-
der cooling:

Lowering cylinder wall and cylinder head temperatures reduces loss of
capacity and horsepower per unit volume due to suction gas preheating dur-
ing inlet stroke. This results in more gas in the cylinder for compression.
Reducing cylinder wall and cylinder head temperatures removes more heat
from the gas during compression, lowering its final temperature and reduc-
ing the power required.
Reducing the gas temperature and that of the metal surrounding the valves
results in a longer valve service life and reduces the possibility of deposit
formation.
Reduced cylinder wall temperature promotes better lubrication, resulting in
longer life and reduced maintenance.
Cooling, particularly water cooling, maintains a more even temperature
around the cylinder bore and reduces warpage.