Detailed analysis of refrigerant flow in metal piping using diagrams and photos!
This document introduces "Refrigerant Flow Analysis in Metal Pipes Using Pulsed Neutron Imaging." Many actual products have refrigerants flowing through opaque metal pipes. In this study, we replaced some parts with transparent materials for observation. As a result, radiographic measurements in the actual operating state visualized the flow patterns of the gas-liquid two-phase flow and the positions and movements of bubble generation. Additionally, by analyzing the FWHM at the edge, we were able to quantitatively evaluate the liquid film thickness. 【Contents (partial)】 ■ Background of the research ■ Purpose of the research ■ Examination using neutron transmission rate calculations - Transmission rate curves for representative refrigerants - Transmission rate curves for refrigerants in metal pipes *For more details, please refer to the PDF document or feel free to contact us.
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【Purpose and Issues of the Research】 ■Purpose - Many actual products have refrigerant flowing through opaque metal pipes → Observe by replacing some parts with transparent materials such as sight glasses ■Issues - Refrigerant flow rate (liquid film thickness) for each pipe - Flow patterns of gas-liquid two-phase flow - Location and size of bubble generation (void fraction), etc. *For more details, please refer to the PDF document or feel free to contact us.
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For more details, please refer to the PDF document or feel free to contact us.
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With the motto of being environmentally friendly, we initially focused our research and development on applying spiral tubes to car air conditioning. However, due to the sudden changes in electricity supply caused by the Great East Japan Earthquake, we recognized the urgent need for energy conservation in commercial refrigeration, cooling, and air conditioning systems that have a very high electricity demand. This led to the development and practical application of the "Miracle Coil." Moving forward, we are determined to challenge ourselves in the development and commercialization of new energy-saving devices, seeking guidance from the professors at Waseda University.