Forced-Cooling Model Tests

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 high- viscosity 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 forced- cooled pipe-type cable circuits.