| 摘要 |
PROBLEM TO BE SOLVED: To positively maintain an operation when switching from a heating operation to a cooling operation. SOLUTION: Since a refrigerant liquid is stored at a refrigerant liquid storage part 53 on cooling operation, the concentration of an absorption liquid being supplied from absorbing equipment 3 to a high-temperature reproducer 1 increases. A cooling/heating switching valve 6 is opened on heating operation, thus supplying the absorption liquid from the high- temperature reproducer 1 into an evaporator 4. When the cooling operation is started, it is discriminated whether the last operation was a heating operation or not, the speed of an absorption liquid pump P1 is controlled to a normal control speed according to the absorption liquid temperature in the high-temperature reproducer 1 in the case of the cooling operation, and the speed of the absorption liquid pump P1 is controlled to an increment control speed that is obtained by increasing the normal control speed by a specific speed in the case of the heating operation. After the heating operation, the concentration of the absorption liquid in the high-temperature reproducer l decreases after the heating operation, and pressure increases for an absorption liquid temperature in the high-temperature reproducer 1 but the speed of the absorption liquid pump P1 increases, thus positively supplying the absorption liquid into the high-temperature reproducer 1. |
