Forced-Cooling Model Tests

Abstract

This paper describes the forced cooling of a model of a pipe-type cable circuit, utilizing mechanical refrigeration to cool the pipe-filling oil. Measured oil film thermal resistances and oil chiller performance are reported. Two pipe-filling oils were tested, a highviscosity oil normally used for pipe-type cable and an experimental low-viscosity polybutene. The test results are expected to have an important effect on the design of future field installations of forcedcooled pipe-type cable circuits.Paper 69 TP 708-PWR, recommended and approved by the Insulated Conductors Committee of the IEEE Power Group for presentation at