| 摘要 |
PURPOSE:To save energy, by using waste heat generated from a prime mover driven working machine as a heat source to heat refrigerant, and feeding the refrigerant to an expander to utilize the waste heat as an auxiliary power source for the working machine. CONSTITUTION:A compressor 10 is directly connected to a prime mover 11, and an expander 13 is connected to a drive shaft of the compressor 10. A suction side of the expander 10 is connected to an evaporation pipe 15 of an eveporator 14, while a discharge side is communicated with a condenser 16. A lubricating oil remaining at a bottom portion of a receiver tank 12 is introduced to an inlet of a secondary passage 18 of the evaporator 14 which passage serves as a passage for waste heat generated from the compressor 10. An outlet of the secondary passage 18 is communicated through an oil cooller 19 to a lubricating oil injection port of the compressor 10. In this manner, it is possible to save energy by utilizing the waste heat generated from the compressor. |
