Item.4 DL-ZLRA01 Refrigeration Cycle and Heat Pump System with HMI (Human-Machine Interface) Technical Document
1. Equipment Overview
The training device currently enables practical hands-on operation of electrical control circuits listed in the textbooks *Primary Maintenance Electrical & Refrigeration Technology* and *Intermediate Maintenance Electrician Technology*. Through operational training, students' skills are improved in the following areas: familiarizing with the structure, principles, installation, and usage of common low-voltage electrical devices; understanding the use of graphical and text symbols in circuit diagrams, and being able to perform circuit layout based on physical components; and mastering the ability to independently complete circuit inspection and debugging using professional knowledge learned from textbooks.
This training device can operate in both forward refrigeration cycle and reverse heating cycle modes. All main components and control devices are clearly and accessibly arranged on the front panel, which is mounted on the workbench frame. To allow students to control and monitor various experiments, special control devices, instruments, and transparent observation ports are provided.
Refrigerant: R134a or equivalent.
2.Technical Parameters
(1) Power Supply: Single-phase 220V ±10%, 50Hz, 10A;
(2) Test Bench Dimensions (mm): 1600 (W) × 720 (D) × 1890 (H) mm ±10%;
(3) Test Bench Structure: Movable bench body with four casters (two with brakes, two without brakes).
(4) RFID Power Management System (Supporting documentation for operational aspects will be provided item by item as required):
Utilizes high-frequency RFID operating at 13.56MHz, enabling power management control for the entire device via card swiping through RS485 communication from the RFID module, accompanied by corresponding audible prompts and LED indicator lights.
3.Learning Objectives
(1) Operation of refrigeration cycle systems
(2) Commissioning of refrigeration cycle systems
(3) Performance analysis of refrigeration cycle systems
(4) Operation of reverse-cycle heat pump systems
(5) Performance analysis of reverse-cycle heat pump systems
(6) Plotting of Mollier diagrams
(7) Calculation of system performance
(8) Comparison of system performance
(9) Comparison of energy consumption for refrigeration and heating
(10) Coefficient of Performance (COP) and Energy Efficiency Ratio (EER)
