The latest refrigerator-freezer research from LG Electronics, focuses on reducing electricity consumption by investigating the foaming flow of PU insulation. To meet the demand for energy-efficient refrigerators, LG Electronics has put significant effort into improving insulation performance. Because consumer demands often require small, mixed production runs, the company has focused on achieving consistent Polyurethane (PU) rigid foam quality for its insulation material. In order to obtain proper PU foam quality, it is necessary to control formation factors such as parameters, fixture temperature, flow path, air-venting holes, and injection locations of PU liquid mixture. To create a foaming process, physical factors such as viscosity dynamics, bubble dynamics, chemical reaction in the flow, heat transfer, and two-phase flow are taken into consideration.
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