Product number: 816

The absorption refrigerator 816 is a fully operational ammonia-water refrigerator with all of the of the main absorption cycle components visible at the rear of the unit. With the built-in load and optional instrumentation students can investigate a refrigeration system that operates from an electrical heat source.

The unit is robustly constructed entirely from standard commercial components. An instrumentation console with digital wattmeter and multi-way temperature indicator allow all of the important system parameters to be recorded. The system allows the ammonia generator and evaporator load to be independently varied and measured using the wattmeter.

The unit has thermocouples located at 10 strategic and important locations around the refrigeration circuit. These together with a comprehensive system diagram and description in the manual, assist in student understanding of this complex system.

An optional computerised Data Acquisition system, allows all 10 thermocouples to be monitored as well as the ammonia generator power consumption and load current and voltage. This allows the system start to fully operational condition to be monitored, which aids student understanding plus the system performance variation with change of load. All parameters can be monitored and plotted against time or transferred to a spreadsheet for analysis.

Specifications and resources

Variable electrical load inside the freezer compartment
Variable generator heater
Digital temperature indicator
Digital wattmeter to give instantaneous indication of generator heater input and evaporator load.
Optional Computerised Data Acquisition System.
- The unit is protected by double pole combined switches and circuit breakers
- A residual current circuit breaker to protect against earth leakage.