Countercurrent exchange

About: Countercurrent exchange is a research topic. Over the lifetime, 2255 publications have been published within this topic receiving 28687 citations. The topic is also known as: Countercurrent exchange.

Two-component coolant

Abstract: FIELD: heatingSUBSTANCE: invention relates to the use as the heat transfer fluid medium in compressor systems with heat exchangers operating in the countercurrent mode or in the mode of split flow with countercurrent tendency, of the two-component composition of 2,3,3,3-tetrafluoropropyl and difluoromethaneEFFECT: invention relates to a heat transfer method, in which the said composition is used as a coolant in compressor systems with heat exchangers in the countercurrent mode or in the cross mode with countercurrent tendency11 cl, 2 tbl

Computer Simulation of the Thermal Performance of a Parallel/Countercurrent Flow Heat Exchanger For Patient Thermal Comfort in Medical Applications

Abstract: A computer simulation is proposed for a specialized heat exchanger used in the medical field which provides thermal comfort to potentially hypothermic patients whose bodies can provide a very limited amount of body heat. The model describes the thermal performance of the heat exchanger using a one-dimensional finite difference technique and solving a two-point boundary value problem to obtain the solution. It was found that the model predicts the thermal performance of the heat exchanger quantitatively when compared with the experimental data provided. The errors in predicting the difference between infusate inlet and outlet temperatures experimentally and theoretically were within 10% of experimental values and it is concluded that the program can be used for future design purposes.

Multi-stage spiral continuous countercurrent leaching device

Abstract: The utility model relates to a multi-stage spiral continuous countercurrent leaching device used for leaching active ingredients out of natural products (particularly traditional Chinese medicinal materials), and belongs to the technical field of extraction of Chinese traditional medicine. Aiming at the defect that non-interstage solid-liquid separation or interstage solid-liquid separation in the prior art is not thorough, the multi-stage spiral continuous countercurrent leaching device is characterized in that material conveying ends among multiple sections of machine grooves provided with a heating component and/or an ultrasonic wave component are connected with input ends in parallel end to end in a roundabout manner through an oblique conical spiral conveying and extruding machine, are communicated with material countercurrent solvents or solutions through liquid transport pipelines with liquid level differences, and extracted liquid at each stage can be completely separated from the medicinal materials as much as possible. On the premises of energy conservation and consumption reduction, compared with the prior art, the multi-stage spiral continuous countercurrent leaching device significantly improves the leaching rate and increases the yield.