83
The pulse duty factor of the valve openings is
dependent on the temperature at the evapora-
tor outlet (low pressure). Pressure equalisa-
tion is regulated.
The temperature at the evaporator
outlet drops, causing a pressure
drop in the thermostatic valve ele-
ment.
The cross-section of the ball valve
is reduced.
SSP207/49
SSP207/50
SSP207/51
SSP207/52
The temperature at the evaporator
outlet is higher due to the cooling
load increase.
Pressure rise (P
a
) of the gas filling
in the thermostatic valve element.
The cross-section of the ball valve
is enlarged via the diaphragms and
push rod.
Refrigerant flows to the evaporator
and absorbs heat at the transition
from high pressure to low pres-
sure.
The air flowing through the evapo-
rator is cooled.
P
a
P
a
