The floating loop is a novel approach to the heat removal problem. It takes advantage of the R -134a dielectric properties and temperature ranges, works well in compact heat exchangers, and could be used to cool larger structures such as a motor housing. Previous work at ORNL demonstrated the superior dielectric nature of R -134a. Life tests, which measure a device's ability to retain its published specifications over time, have been conducted with capacitors, insulated gate bipolar transistors (IGBT), and a gate -driver printed circuit board in direct contact with the refrigerant. The life tests have been conducted over a period of 21 months, with periodic visual and functional testing [4]. No adverse affects on the components have been detected.
The floating loop is a novel approach to the heat removal problem. It takes advantage of the R -134a dielectric properties and temperature ranges, works well in compact heat exchangers, and could be used to cool larger structures such as a motor housing. Previous work at ORNL demonstrated the superior dielectric nature of R -134a. Life tests, which measure a device's ability to retain its published specifications over time, have been conducted with capacitors, insulated gate bipolar transistors (IGBT), and a gate -driver printed circuit board in direct contact with the refrigerant. The life tests have been conducted over a period of 21 months, with periodic visual and functional testing [4]. No adverse affects on the components have been detected.
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