Vapour Jet Refrigeration Trainer
Product Code : EL-RAACLE-10796
Vapour Jet Refrigeration Trainer (code EL-RAACLE-10796) is an experimental unit for studying compression refrigeration by the vapour jet method, with a refrigeration cycle for cold production and a vapour cycle that raises motive vapour for the vapour jet compressor. A 2 kW electrically heated vapour generator drives the jet, which compresses vapour from a flooded evaporator with float valve and 4 × 125 W heaters into a transparent water-cooled condenser.
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Specifications
| Parameter | Detail |
|---|---|
| Circuits | Refrigeration cycle for cold production; vapour cycle for generating motive vapour |
| Vapour jet compressor | Compresses refrigerant vapour and transports it to the condenser |
| Condenser | Transparent tank with water-cooled pipe coil |
| Evaporator | Flooded, connected to the compressor intake side; float valve keeps the liquid level constant |
| Evaporator heat | Refrigerant absorbs ambient heat or heat from the heater |
| Vapour cycle | Pump transports part of the condensate to the vapour generator |
| Vapour generator | Electrically heated tank with water jacket |
| Measurements | Temperatures and pressures measured and displayed on the unit |
| Controls | Adjustable evaporator heater power; condenser cooling water flow set by a valve |
| Vapour jet compressor | |
| Nozzle minimum diameter | Approx. 1,7 mm (convergent-divergent nozzle) |
| Mixing jet minimum diameter | Approx. 7 mm |
| Condenser | |
| Tank | Approx. 3,5 L |
| Pipe coil area | Approx. 0,17 m² |
| Evaporator | |
| Tank | Approx. 3,5 L |
| Heater power | 4 × 125 W |
| Vapour generator | |
| Refrigerant tank | Approx. 0,75 L |
| Water jacket | Approx. 9 L |
| Heater power | 2 kW |
| Pump | |
| Maximum flow rate | Approx. 1,7 L/min |
| Maximum head | Approx. 70 mWS |
| Measuring ranges | |
| Current | 0 to 2,5 A |
| Voltage | 0 to 230 VAC |
| Temperature | 10 × -20 to 200 °C |
| Pressure | 2 × 0 to 10 bar; 2 × -1 to 1,5 bar |
| Cooling water flow rate | 6 to 75 g/s |
| Learning content | |
| Rankine cycles | Clockwise and anticlockwise Rankine cycle, energy balances and coefficient of performance of the refrigeration circuit |
| Cycle diagram | Thermodynamic cycle in the log p-h diagram and operating behaviour under load |
| Vapour jet method | Understanding compression refrigeration systems based on the vapour jet method |
| Power, dimensions and weight | |
| Power supply | 230 V, 50 Hz, 1 phase; or 230 V, 60 Hz, 1 phase |
| Dimensions | Approx. 1300 × 600 × 1200 mm (L × W × H) |
| Weight | Approx. 160 kg |
| Supply | |
| Product code | EL-RAACLE-10796 |
| Manufacturer | Engineering Lab Equipment, Ambala, Haryana, India |
What Is the Vapour Jet Refrigeration Trainer Used For?
A vapour jet, or ejector, compressor has no moving parts: high-velocity motive vapour leaving the convergent-divergent nozzle entrains low-pressure vapour from the evaporator and recompresses it in the mixing section, so the refrigeration effect is driven by heat rather than shaft work. On the trainer students set the evaporator heater power and the condenser cooling water flow, read temperatures, pressures, current and voltage, and follow the two linked cycles: the clockwise Rankine cycle that produces motive vapour and the anticlockwise refrigeration cycle. Energy balances on both give the coefficient of performance and the behaviour under load, shown on the log p-h diagram.
What to Specify When Ordering
- Quantity — the number of vapour jet trainers required.
- Power — the 230 V single phase build for 50 Hz mains, or the one for 60 Hz mains.
Frequently Asked Questions
How does the vapour jet compressor work?
Motive vapour from the electrically heated generator drives the vapour jet compressor, which draws refrigerant vapour from the evaporator, compresses it and delivers it to the condenser.
What are the two circuits?
One is a refrigeration cycle that produces cold; the other is a vapour cycle in which a pump returns condensate to the vapour generator to make motive vapour.
How is the evaporator level kept constant?
The evaporator is a flooded type, and a float valve keeps its liquid level constant while the refrigerant absorbs heat from the surroundings or from the 4 × 125 W heaters.
What heats the vapour generator?
An electric heater of 2 kW heats a tank with a water jacket of approx. 9 L, which surrounds a refrigerant tank of approx. 0,75 L.
Which values can be read on the unit?
Ten temperatures from -20 to 200 °C, pressures of 2 × 0 to 10 bar and 2 × -1 to 1,5 bar, current, voltage and cooling water flow of 6 to 75 g/s.
What size is the vapour jet trainer?
Overall it is about 1300 mm long, 600 mm wide and 1200 mm high, with a weight of approx. 160 kg.
OEM Manufacturer
Buyers of the Vapour Jet Refrigeration Trainer deal directly with its maker, Engineering Lab Equipment (Engineering Labs Equipment Pvt Ltd), whose works are at Plot No. 43, Industrial Park, Sector 2, Growth Center, Saha, District Ambala, Haryana, India. The company designs, makes and tests refrigeration and air conditioning trainers and test rigs, supplies engineering colleges, polytechnics, technical training institutes and research laboratories in India and overseas, and builds to institution-specific requirements on request. Tender details are on the Tenders/OEM page.
Related Refrigeration and Air Conditioning Equipment
- Vapour Compression Refrigeration Trainer — refrigeration circuit trainer with glass evaporator and condenser, float valve and SES36 refrigerant.
- Vapour Absorption Refrigeration Trainer — ammonia-water absorption refrigeration demonstrator with hydrogen auxiliary gas and 125 W electric heater.
- Computerized Cascade Refrigeration Trainer — two-stage compression refrigeration trainer with LP and HP compressors, injection intercooling and real-time software.
See the full Refrigeration and Air Conditioning Lab Equipment range or all Mechanical Engineering Lab Equipment.
Request a Quote
For this and other refrigeration and air conditioning lab equipment, schools and colleges can contact Engineering Lab Equipment, a manufacturer, supplier and exporter based in Ambala, India. Quotations are given on request: send the number of vapour jet trainers and the local mains frequency and your delivery location through the contact page, or add the Vapour Jet Refrigeration Trainer to the enquiry cart from this page.
Last updated: October 2026
