| 摘要 |
<p>PROBLEM TO BE SOLVED: To increase the workload that can be taken out to a driven machine that an expander drives in a cooling system which cools a working fluid by a condenser of a Rankine cycle with a heat receiving fluid of constant temperature, and cools a preheated fluid by an evaporator with the working fluid so as to lower the temperature.SOLUTION: A heating system includes a single-stage first Rankine cycle 2 and a two-stage second Rankine cycle 3. A working fluid is cooled by a condenser 7 of the first Rankine cycle 2 and a lower-stage condenser 13B of the second Rankine cycle 3 with a heat receiving fluid 9 of constant temperature. A preheated fluid 8 is passed through an upper-stage evaporator 11A of the second Rankine cycle 3 and an evaporator 5 of the first Rankine cycle 2 in order, and then while the working fluid of the Rankine cycles 2, 3 is heated, the preheated fluid 8 is cooled to lower the temperature.</p> |
