What is it about?
In this study, researchers propose a smarter way: using transmitance to measure the concentration right inside the aqueous lithium bromide system. The signal through the liquid at several wavelengths was analyzed and correlated with the refractive index, which varies based on the lithium bromide concentration in the solution and also has a variation depending on the temperature. Several testing mixtures were reported from 50% to 60% concentration at temperatures between 25°C and 70°C.
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Why is it important?
This optical method would be useful for non-invasive concentration testing. It is like using a high-tech chemical tester. The proposal would be fast, inexpensive, and could be easily installed in the air conditioning system. The main fact is that this method saves energy and reduces waste. What is the best light wavelength for this? 1330 nanometers, where the signal is clearest. Overall, it’s a step toward making solar cooling more reliable for hot climates or green buildings.
Perspectives
This optical approach avoids invasive sampling, aligning with what could lead to building a future sensor for industrial processes. While it is focused on lithium bromide solutions, it has broader implications for monitoring electrolytes in batteries, desalination, or chemical engineering.
Professor Rosenberg J Romero
Universidad Autonoma del Estado de Morelos
Read the Original
This page is a summary of: Detection of the Concentration of LiBr in Cooling Systems by Means of Optical Transmitancia, January 2006, Optical Society of America (OSA),
DOI: 10.1364/ofs.2006.the93.
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