| 摘要 |
PROBLEM TO BE SOLVED: To obtain a setting means of an entirely new direct-acting motor- operated expansion valve by using a refrigerant containing an HFC as a main body and setting a frictional coefficient corresponding to a rated torque of the valve to a specific value. SOLUTION: This refrigeration device 100 is a so-called split type refrigeration device 100 and has a refrigerant circuit 11 connected with an indoor unit 130 of one user side unit to an outdoor unit 120 of one heat source side unit. The refrigerator 10 comprises a low-pressure dome type compressor 121, a direct-acting motor-operated expansion valve Z so that a heat source side heat exchanger 123 and a user side heat exchanger 131 are constituted as one to one. In the case of using the refrigerant containing an HFC as a main component, a friction coefficient corresponding to a rated torque of the valve Z is set to 0.31 to less than 0.62. |
