(LA) WORKING MEDIUM CHARACTERISTIC DIFFERENCE POWER GENERATION SYSTEM A.ND WORKING MEDIUM CHARACTERISTIC DIFFERENCE POWER GENERATION METHOD IN WHICH SAID POWER GENERATION SYSTEM IS USED

(LA)

To provide a power generation system and a power generation method that can use thermal energy in a natura] world as a thermal- source, and can perform power generation while suppressing l-oss of thermaf energy as far as possible. A first heat exchanger 14, a first thermal engine 2A,
and a first power generator 3A are included on a first working medium line L1 that circulates a first worklng medium W1", a second heat exchanger LB, a third working medium suppJ-y means 5 that supplies a third working medium W3, a mixing means 6 that mixes a second working medium W2 and the third working medium W3, a second thermal engi-ne 28, and a second power generator 38 are included on a second working medium line L2 that circulates the second working medium W2, and on both of a downstream side of the first thermal engine 2A on the flrst worklng medj-um l-ine L1 and a downstream side of the second thermal engine 28 on the second working medium line L2, a third heat exchanger 1C is i-ncfuded, and a Bthird working medium discharge means 10 for discharging the third working medium W3 to the thj.rd heat exchanger l"C is incfuded.