| 摘要 |
PURPOSE:To improve system efficiency of a machine and perform its self start operation, in the Rankine cycle for irrigation in a desert area, by such constitution that an electric motor for driving a working fluid pump is driven by a solar cell and the working fluid pump and expansion machine are coaxially connected. CONSTITUTION:A solar cell 8 in a heat collector generator 1 is operated by solar radiation, if the solar cell 8 starts to generate output, an electric motor 5 is gradually rotated. Here a working fluid pump 4 starts press feeding working fluid from a condenser 3 to the heat collector generator 1. While an expansion macine 2 and irrigation pump 7, coaxially connected to the working fluid pump 4, are also rotated to perform self start operation of a system. As a solar radiation amount increases, delivery pressure of the working fluid pump 4 also inincreases, and self operation of the expansion machine 2 can be performed, further the irrigation pump 7 also increases its delivery water amount. In this constitution, a self start of the system can be performed, simultaneously output of the expansion machine 2 can be fully transmitted to the irrigation pump 7 to improve efficiency and energy saving. |
