When Zosel passed a stream of supercritical carbon dioxide through wet coffee beans he was already familiar with the way chemists used supercritical fluids (SCFs) to purify mixtures of chemicals by dissolving out unwanted components. (newscientist.com)
Coffee producers are already using supercritical carbon dioxide to extract caffeine from beans. (scientificamerican.com)
Sandia is evaluating the receivers» performance with different gases by flowing air, carbon dioxide and helium through the receiver tubes with the ultimate goal of pairing the new receiver designs with supercritical carbon dioxide Brayton cycles. (sciencedaily.com)