Abstract
The innovative development of a thermally driven pump in the supercritical CO2 solar Rankine cycle system has been carried out and investigated to increase the system efficiency in field operation....
Highlights
Fossil fuels, such as the coal, oil, or gas, which are the leading cause of environmental problems, have been consumed as the power generation sources for many decades
The energy analysis and exergy analysis of supercritical CO2 solar Rankine cycle system by using either conventional mechanical feed pump or the thermally driven pump are investigated in a realistic operating condition, and the results are verified to confirm the advantage and superior property of the thermally driven pump against the mechanical feed pump, in which exergy analysis is based on the combination of the first and the second laws of thermodynamics, able to verify the losses of quality, or work potential in the system
The energy and exergy analysis of solar Rankine cycle system (SRCS) by using either conventional mechanical feed pump or the thermally driven pump are investigated in a realistic operating condition, which the exergy analysis is used to improve the efficiency of the system by energy-resource use (Kanoglu, Dincer, & Rosen, 2007)
Summary
Fossil fuels, such as the coal, oil, or gas, which are the leading cause of environmental problems, have been consumed as the power generation sources for many decades. The SRCS consists of an evacuated solar collector, turbine, heat exchanger units, and the mechanical feed pump, with which in the previous investigation the fundamental system performance was investigated for the electric and thermal energy generation (Zhang, Yamaguchi, & Uneno, 2007). The energy and exergy analysis of SRCS by using either conventional mechanical feed pump or the thermally driven pump are investigated in a realistic operating condition (field test), which the exergy analysis is used to improve the efficiency of the system by energy-resource use (Kanoglu, Dincer, & Rosen, 2007). After leaving heat exchanger units, CO2 is pumped to the high-pressure state into the evacuated solar collector by the mechanical feed pump or by the thermally driven. The heat loss Qloss,s can be estimated as: Q_ loss;s 1⁄4 IA À Q_ s (2)
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