Chemistry | OCR | Inline measurement of OCR in R290 for precise real-time results

The amount of circulating oil is particularly important in cooling circuits. To precisely measure the oil concentration inline and in real time, Anton Paar is the only supplier worldwide to offer a highly accurate and reliable measurement based on density (L-Dens 7400) or sound velocity (L-Sonic 6100) for R290 (propane).

Global trend

The global trend in the refrigeration industry is moving toward eco-friendly refrigerants with low global warming potential (GWP), gradually phasing out hydrofluoro-carbons (HFCs).
The refrigerant R290 (propane) is currently one of the favorites to replace traditional HFCs refrigerants. It aligns perfectly with the EU F-Gas Regulation and has excellent thermodynamic and refrigeration properties. This report highlights how our sensor solutions enable the safe and efficient detection of OCR in R290 systems.

OCR measurement

A key factor influencing the efficiency of refrigeration circuits, including those using R290, is the oil concentration in the refrigerants, also known as the oil circulation ratio (OCR). Oil is added to the cooling circuit to lubricate the compressor. However, the presence of oil in the refrigeration cycle negatively impact the system's overall efficiency. Therefore, it is essential to add only as much oil as necessary to ensure the compressor's durability while maintaining optimal cooling efficiency. In many tests, knowing the correct concentration of oil in the circuit is crucial for the test results.

 

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