Vertiv Liebert LVC - Chapter 3: Spray Cooling Module (Optional Component); Introduction of Spray Cooling Module; Requirements of Spray Water Quality

Vertiv | Liebert LVC | User Manual 18
Spray Cooling Module (Optional Component)
Chapter 3: Spray Cooling Module (Optional Component)
3.1. Introduction of Spray Cooling Module
The spray system turns the water into tiny particles which in turn evaporate and cool the air. It helps in
reducing the dry bulb temperature of air running into the coil. Additionally, the water mist sprinkled on the
ns surface, reduces the temperature of the ns surface and increases the convection heat transfer eect of
the condenser.
The main components of the spray cooling module are ball valve, water pump, motor, and nozzle. The
appearance and position of all the components are shown in Figure 3-1.
Figure 3-1 Spray Cooling Module
3.2. Requirements of Spray Water Quality
It is must to use soft water or pure water for spray system, the requirements of water quality as shown in
Table 3-1.
Table 3-1 The Requirements of Water Quantity
Item
Electrical
Conductivity
(25°C, uS/cm)
Hardness
(mg/L,
CaCO3)
pH
(25°C)
Chloride
Content
(mg/L)
Silica
Content
(mg/L)
Temperature
(°C)
Requirement
< 100 < 50
6.5 < pH <
8.5
< 20 < 5 5-40
• The use of tap water without softening treatment will cause nozzle clogging, ne scaling & cor-
rosion, water pump damage, aects the normal operation of the spray system and the eective
convection heat transfer of the condenser.