Keeping Refrigerants Even with Piezoelectric-Driven Magnetic Actuators
Oak Ridge National Laboratory researchers demonstrated that microchannel heat exchangers in HVAC units can keep refrigerants evenly and continually distributed by inserting a device called a piezoelectric-driven magnetic actuator, or PEDMA.
Oak Ridge National Laboratory researchers demonstrated that microchannel heat exchangers in HVAC units can keep refrigerants evenly and continually distributed by inserting a device called a piezoelectric-driven magnetic actuator, or PEDMA.
Heat exchangers are shells or pipes that use metal tubing to transfer heat from one place to another. In contrast, a microchannel exchanger uses a maze of smaller pathways, making it low weight and lower cost while providing superior performance. However, these small channels can cause refrigerant maldistribution, putting extra pressure on the compressor.