TRG-TRC012-EN 41
period six
Review
notes

In Period 2, the refrigeration cycle of the helical-rotary water chiller was

examined on a pressure-enthalpy chart. Also, the performance characteristics

of the various refrigerants were compared.

In Period 3, the operation of the modulating slide valve was explained. The slide

valve is one method by which a helical-rotary compressor’s capacity is

controlled.

Review—Period 2
6
6
pressure
pressure
enthalpy
enthalpy
evaporator
evaporator 1
1
2
2
5
5
7
7
condenser
condenser
compressor
compressor
expansion
expansion
device
device liquid/vapor
liquid/vapor
separator
separator
4
43
3
Figure 58

Review—Period 3

axial
axial
discharge
discharge
port
port
slide valve
slide valve
radial
radial
discharge
discharge
port
port
Figure 59