Cold Storage Test Rig Manufacturer,Supplier and Exporter in India
Product Code : EL-RACLE-9358
Jlab Export is a leading Cold Storage Test Rig Manufacturer,and suppliers in India
A cold store holds food and other produce at a low, steady temperature using a vapour compression refrigeration system. This test rig brings that system into the lab on a mild steel square tube frame with cast iron wheels. Its instrumentation panel carries the pressure gauges and a digital temperature indicator for study of the cycle and its COP.
Specifications
| Frame | Mild steel square tube frame on cast iron wheels |
| Instrumentation | Panel with digital temperature indicator |
| Pressure gauge ranges | 0–300 psi and 30 inHg vacuum to 150 psi |
| Studies | Vapour compression refrigeration cycle, COP |
| Optional extra | Line voltage corrector, 2 kVA, output 230 V ±10% |
| Minimum order quantity | 1 unit |
| Dispatch time | Usually 14–18 working days |
| Manufacturer | JLab (Jain Laboratory Instruments Pvt Ltd), Ambala, India |
Cold Storage Experiments in the Lab
The first run is a pull-down test. Students start the rig with the cold space at room temperature and log its temperature, the suction pressure and the discharge pressure every few minutes. The curve shows how fast the system removes heat and how the evaporating pressure falls as the space gets colder. A Type K Thermocouple can add a reading inside a test load placed in the space.
At steady running, students plot the cycle on a p-h chart from the gauge pressures and line temperatures, read off the enthalpies and work out the COP. Repeating the calculation at two space temperatures shows the COP falling as the space gets colder. Teachers can also explain how a cold store is held between cut-in and cut-out temperatures, using a refrigeration compartment thermostat such as Thermostats 1.
Frequently Asked Questions
What does a pull-down test show?
It shows how long the system takes to bring the cold space from room temperature down to its working temperature. Plotting temperature and suction pressure against time also shows the load on the system falling as the space cools.
Why does frost form on the evaporator of a cold store?
Moisture in the air of the cold space freezes on the coil whenever the coil surface is below 0 °C. A thick layer insulates the coil and cuts the cooling, so cold stores are defrosted at intervals.
Why does the COP drop at lower storage temperatures?
A colder space needs a lower evaporating pressure. The compressor then works across a larger pressure ratio, and each kg of refrigerant gives less refrigerating effect for more work, so the COP falls.
When is the line voltage corrector worth adding?
It is an optional extra rated at 2 kVA with a 230 V ±10% output. Add it where the mains voltage swings, so the compressor starts and runs on a steady supply and test readings can be repeated.
How is it different from the Refrigeration Test Rig?
Both rigs run the vapour compression cycle and share the same gauge ranges. This rig is set up as a cold store, so its tests centre on cooling a storage space and holding it cold. The Refrigeration Test Rig is for study of the basic cycle itself.
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Last updated: 5 November 2026
