Product description
The principle of refrigeration is the exchange of heat. In absorption liquid chilling, there are four
basic heat exchange surfaces: the evaporator, the absorber, the generator, and the condenser. See
Figure 2.
Like any refrigeration system, absorption chilling uses evaporation and condensation to remove
heat. The absorption cycle uses water as the refrigerant and lithium bromide (LiBr) as the
absorbent. It is the strong affinity that these two substances have for one another that makes the
cycle work. The entire process occurs in almost a complete vacuum.
Chiller-heater components
The absorption chiller-heater consists of the following components:
• Evaporator
• Absorber
• Condenser
• Generators
• Solution heat exchangers to heighten the cycle efficiency
• Pumps to circulate the refrigerant and solution in the cycle
• Purge unit to remove non-condensable gas from the machine
Control panel
The absorption chiller-heater comes with a factory mounted and pre-wired control system. The
control panel enclosure is equipped with a hinged access door with lock and key. The control panel
includes a touch panel showing all system parameters in various languages with numeric data in
imperial or metric units. For details of the control panel, see
.
Note:
Verify that the main power switch is within 6.56 ft (2 m) off the ground. If not, install the
operation platform.
WARNING
Turn off the power supply by the handle breaker when opening the control panel.
The unit is also equipped with two methods to start and stop operations:
• Touch panel
• External signal
13
Model YHAU-CGN/H-CXR(M)Double Effect Direct Fired Small Absorption Chiller-Heater
