| 摘要 |
PROBLEM TO BE SOLVED: To provide a refrigeration air conditioning apparatus, using a refrigerant such as CO<SB>2</SB>whose refrigerant state in the stopping state of the apparatus enters the supercritical state, restraining a pressure rise in the stopping state of the apparatus regardless of the length of a pipeline, and attaining high reliability and low cost. SOLUTION: A pipe inside diameter ratio of a liquid pipe to a gas pipe is set so that the average density of a refrigerant existing in the liquid pipe 7 and the gas pipe 10 connecting an outdoor unit 1 and indoor units 2a, 2b does not exceed an upper limit density allowed when the refrigeration air conditioning apparatus stops. COPYRIGHT: (C)2009,JPO&INPIT
|
