| 摘要 |
PROBLEM TO BE SOLVED: To provide an inexpensive heat engine having improved Rankine efficiency in a Rankine cycle for outputting efficient power. SOLUTION: The heat engine comprises a refrigerant circuit which consists of a refrigerant pump for pressurizing refrigerant, a first refrigerant heater for heating the pressurized refrigerant, a refrigerant expander for expanding the heated refrigerant, and a refrigerant radiator for radiating heat from the expanded refrigerant. Herein, the refrigerant is circulated in the refrigerant circuit with the Rankine cycle and power is output with the refrigerant expanding work of the refrigerant expander. The refrigerant expander is formed as a two-stage expander with a first-stage refrigerant expander and a second-stage expander. Between the first refrigerant expander and the second expander, a second refrigerant heater is provided for heating the refrigerant expanded by the first-stage refrigerant expander. A heat collector is provided for heat exchange between the refrigerant expanded by the second-stage expander and the refrigerant pressurized by the refrigerant pump. COPYRIGHT: (C)2006,JPO&NCIPI
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