This module is a component of the Hardware/Software integration (HIS) training system designed for refrigeration and air conditioning technology. When combined with the base unit IRC-1923, sold separately, it forms a complete refrigeration system that includes both refrigeration and freezing stages. The module attaches securely to the base unit using fasteners and connects with refrigerant hoses to create a full refrigeration circuit. In systems that combine refrigeration and freezing, evaporators are typically connected in parallel. For increased cooling capacity, evaporators can be linked in series, allowing for different pressure levels and temperature ranges suited to either refrigeration or freezing. The module features two distinct refrigeration chambers, each with its own evaporator and expansion elements. The evaporators can be configured to operate either in series or in parallel. Two fans within the chambers ensure consistent temperature distribution, and heaters can be used to simulate additional cooling loads. One chamber can be equipped with either an expansion valve or a capillary tube as the expansion element. Various operational modes are controlled via solenoid valves. An evaporation pressure controller allows independent temperature adjustments in the upper chamber during parallel operation. All components are clearly organized on a panel. Individual system components such as temperature control, fans, heaters, compressors, and solenoid valves can be managed through the software provided with the base unit IRC-1923 (optional). The software also includes features for fault simulation. Sensors track and display temperatures and pressures in real time, and changes in parameters can be monitored online via the p-h diagram.
Experiments
- Design and operation of a refrigeration system with two evaporators
- Series and parallel connection of two evaporators
- Familiarisation with the different expansion elements
- Operation with capillary tube
- Operation with expansion valve
- Operating behaviour under load
- Refrigeration cycle in the p-h diagram
- Effect of the evaporation pressure
- Fault simulation
Specification
- Model of a refrigeration system designed to plug into the base unit (IRC-1923) sold separately.
- Each refrigeration chamber features an evaporator with a fan for air circulation and a heater to simulate cooling loads.
- Refrigeration chambers come with a transparent front.
- Includes an adjustable evaporation pressure controller.
- Selectable expansion elements include either an expansion valve or a capillary tube.
- Training system with Hardware/Software Integration (HIS) technology
- Operating modes of the system can be configured using 5 manual sevice valves.
- Sensors are used to record temperature and pressure.
- Control and simulation of solenoid valves, fans, heaters, and fault conditions are managed through the software.
- Software provides control functions and data acquisition via USB on Windows 10 (optional).
- The software package includes educational content, data acquisition, and system operation, and is available with the base unit IRC-1923 (optional).
