Vapor Compression Refrigeration Cycle Experimental Apparatus | Refrigeration Cycle Teaching Test Rig

For universities, technical colleges and vocational education labs, the Vapor Compression Refrigeration Cycle Experimental Apparatus (also named Refrigeration Cycle Test Rig) is professional laboratory teaching equipment for Engineering Thermodynamics, Energy and Power Engineering, Refrigeration and AirConditioning majors. This refrigeration cycle training bench reproduces a complete real singlestage vapourcompression refrigeration system, helping students master refrigeration principles, measure refrigeration coefficient COP, plot the ph (pressureenthalpy) diagram, compare ideal refrigeration cycle vs actual refrigeration cycle, and visually observe refrigerant evaporation and condensation phenomena.

Core Working Principle of the Refrigeration Cycle Test Rig

The singlestage vapourcompression refrigeration cycle consists of four core components: hermetic compressor, condenser, expansion throttle valve and evaporator. Following the second law of thermodynamics, the refrigeration system consumes electric work to transfer heat from lowtemperature heat source to hightemperature heat source to realize cooling effect.

1. Compression Process: The hermetic compressor sucks lowtemperature lowpressure refrigerant vapour from the evaporator, compresses vapour into hightemperature highpressure superheated refrigerant steam.
2. Condensation Process: Highpressure refrigerant steam flows into the visual condenser, releases heat to cooling water and condenses into highpressure liquid refrigerant. Learners can directly watch refrigerant condensing into liquid droplets inside transparent condenser tank.
3. Throttling Expansion Process: Highpressure liquid refrigerant passes through expansion valve for adiabatic throttling. The refrigerant pressure drops sharply while enthalpy keeps constant, turning into lowtemperature lowpressure wet vapour.
4. Evaporation Process: Twophase refrigerant enters the visual evaporator, absorbs heat from chilled water and boils to vapour. Obvious boiling bubble phenomena can be observed; then refrigerant vapour returns to the compressor to finish the closed refrigeration cycle.

Main Features of Vapor Compression Refrigeration Cycle Experimental Apparatus

1. Visualized refrigeration components: Transparent shellandtube evaporator and condenser allow direct observation of refrigerant evaporation boiling and condensation dripping, not limited to textbook schematic drawings. All refrigeration parts are neatly laid out on the bench panel for easy teaching demonstration.
2. Comprehensive multiparameter measurement system: This refrigeration cycle test rig is equipped with multichannel Ttype thermocouples, high/low pressure gauges, refrigerant flow meter, cooling water & chilled water flow sensors, and power acquisition module. Realtime measurable parameters include evaporating pressure, condensing pressure, refrigerant flow rate, multiplepoint temperature values, compressor input voltage, current and active power. All experimental data can be displayed on the touchscreen monitor for recording and postprocessing.
3. Adjustable working conditions for varied refrigeration experiments: Operators can adjust cooling water flow rate and chilled water flow rate via manual control valves. By changing condensing temperature and evaporating temperature, users can study how working conditions affect refrigeration system performance.
4. Complete safety protection mechanism: The refrigeration teaching test bench integrates condenser highpressure cutoff protection, compressor thermal overload protection, electrical overload cutoff and earthing protection. When condenser pressure exceeds threshold value, the system will automatically cut off compressor power supply to guarantee lab operator and device safety.
5. Environmentfriendly refrigerant: Adopts ecofriendly refrigerant for closedloop refrigeration circulation, stable for repeated student laboratory operations.

Available Laboratory Experiments on This Refrigeration Cycle Training Bench

This refrigeration cycle experimental apparatus supports 5 standard teaching experiments for engineering thermodynamics and refrigeration labs:

1. Measurement of refrigeration coefficient (COP) of refrigeration cycle: Calculate actual cooling capacity and COP value via waterside heat balance method; analyse influencing factors of refrigeration performance.
2. Comparison between actual refrigeration cycle and ideal theoretical refrigeration cycle: Collect pressuretemperature data, locate each state point on refrigerant ph diagram; contrast real cycle deviation against theoretical vapourcompression refrigeration cycle, analyse experimental losses.
3. Study refrigeration performance change under different fluid flow rates: Adjust chilled water and cooling water flow, record cooling power and COP variation data, research heat exchange performance of evaporator and condenser.
4. Observation of evaporation and condensation phenomena in vapourcompression refrigeration cycle: Directly view refrigerant boiling inside evaporator and droplet condensation inside condenser, deepen understanding of phasechange heat transfer in refrigeration system.
5. Test refrigeration performance curves under different evaporating temperature and condensing temperature: Modify system pressure conditions, draw performance curves of COP against evaporation / condensation temperature, understand how thermal parameters affect refrigeration unit efficiency.

All experiments come with complete experiment manuals, data record tables and ph diagram appendix for teachers and students to finish fullprocess lab report writing.

Company Strength

We are a manufacturer deeply engaged in educational experimental teaching equipment research & development and production. We conquer technical difficulties for university teaching labs and supply fullseries engineering teaching experimental apparatus. Our product portfolio widely covers Fluid Mechanics, Aerodynamics, Wind Tunnel Test Equipment, New Energy & Energy Storage, Heat Transfer, Engineering Thermodynamics, Refrigeration & AirConditioning, Material Mechanics and Structural Mechanics.

Our lab equipment including vaporcompression refrigeration cycle experimental apparatus, heat transfer test rig, fluid mechanics teaching bench, newenergy experiment modules have been supplied to numerous universities, colleges and vocational institutes. We provide complete product hardware, detailed experiment instruction manuals, aftersales technical support and custom modification service for laboratory teaching requirements. Whether you need refrigeration cycle test rig, thermodynamics training equipment or other engineering teaching devices, we can deliver reliable labgrade solutions for your teaching laboratory.