RG66001652_REV.02
15
LCW - LCR
The compressors work intermittently, since the chilling requirements of the user generally do not coincide
with the compressor output. In systems containing little water, where the thermal inertia of the water is
lower, it is a good idea to check that the water content in the section delivering to users satisfies the
condition below:
Ns
Sh
Cc
V
×
ΔΤ
×
×
Δ
×
=
ρ
τ
V
= water content in user section
[m3]
Sh
= specific heat of the fluid
[J/(kg/°C)]
ρ
=
fluid
density
[kg/m3]
D
τ
= minimum time lapse between 2 compressor restarts [s]
DT
= allowed water T differential
[°C]
Cc
=
Cooling
capacity
[W]
Ns
= N° of capacity control steps
Tank
Ts
Q; TW in
Q; TW out
