Dual-Temperature Cold Room (Two Cold Rooms) Refrigeration Training Equipment is one kind of HVAC teaching platform, the training model main body utilizes industrial-grade components, including a fully hermetic refrigeration compressor, an air-cooled condenser, evaporators for both the freezer and the fresh-keeping room, and a complete set of auxiliary refrigeration controls (such as high/low pressure controller, expansion valve, solenoid valve, etc.). All components are openly mounted on the profile and sheet metal frame training table and front panel, with clearly visible wiring and piping paths. This device comprehensively supports various training projects, including refrigeration system installation, vacuuming, refrigerant charging, system commissioning, operation management, and fault diagnosis and troubleshooting. It is an ideal teaching device for cultivating students' engineering practice abilities and problem-solving skills.fit for different engineer training schools, like vocational school, polytechnics, college training, university teaching etc.