Glossary; Saturation; Condensation Temperature And Evaporation Temperature; Degree Of Subcooling And Superheat - Autool Lm150 Benutzerhandbuch

GLOSSARY

Saturation

Condensation
temperature
and evapora-
tion tempera-
ture
Degree of
subcooling
and superheat
Sensible
heat and
latent heat
● The state of saturation is the coexistence of a refrigerant in a
liquid and gas state.
● Condensation temperature:
In the condenser, the refrigerant is condensed by the
high-temperature gaseous refrigerant to the temperature of the
liquid refrigerant, that is, the saturation temperature under the
condensing pressure.
● Evaporation temperature:
In the evaporator, the refrigerant evaporates from the liquid
refrigerant to the temperature of the gaseous refrigerant, that
is, the saturation temperature under the evaporation pressure.
●
Subcooling:
Condensing temperature - condensing outlet temperature.
Superheat:
●
Evaporation outlet temperature - evaporation temperature.
●
The lower subcooling can make the refrigeration capacity of
the system better. Adding subcooling circuit and economizer in
the refrigeration system is to increase the subcooling for refrig-
erant increasing.
●
The degree of expansion of the expansion valve (refrigerant
charge) affects the degree of superheat. The greater the
degree of superheat, the smaller the opening of the expansion
valve can be determined (the refrigerant charge is less).
● The amount of heat required to raise the water temperature
from 0 degrees to 100 degrees is sensible heat, the water is
heated to 100 degrees, and the hot water becomes water
vapor, but the temperature is still 100 degrees. The heat
required for this process is called latent heat.
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