| 摘要 |
<P>PROBLEM TO BE SOLVED: To develop a coolant circuit with an incombstible coolant composition sealed therein, which is used for a refrigerating device without having the danger of breaking ozone layer and with good cooling performance, and allows the use of a refrigerating machine oil such as mineral oil or alkyl benzene having good lubricating performance and excellent heat resistance. <P>SOLUTION: This coolant circuit is constituted by successively connecting a compressor, a condenser, a capillary tube, and an evaporator, and provided with a sealing device for sealing a coolant. The coolant composition consisting of a solved matter in which n-pentane is preliminarily dissolved in 1,1,1,2- tetrafluoroethane in a ratio within the range of 0.1 wt.%-7.3 wt.% of the total weight is sealed in a coolant vessel, and the coolant composition in the coolant vessel is sealed in the coolant circuit by the sealing device. <P>COPYRIGHT: (C)2003,JPO |
