Numerical Analysis Of A Minichannel
Solar Collector For CO2-based Rankine
Cycle Applications
Author(s)
G. Diaz
Abstract
The combined effects of increasing energy consumption, higher fuel prices, and
green-house-related climate change are challenging universities and industry to
develop more efficient and sustainable ways to produce power, heating, and
cooling for industrial, commercial, and residential applications. The utilization
of renewable energy sources is receiving considerable attention as a
non-resource-depleting approach that reduces the emissions of pollutants and
green-house gases to the atmosphere. Solar thermal systems have the capacity to
provide heat in a sustainable way for a variety of applications due to the
relatively large range of temperatures that different collector configurations can
attain. Non-imaging-optics based compound parabolic concentrating reflectors
combined with evacuated-tube collectors can operate at 200oC at efficiencies
near 50% without the need for tracking. In addition, a trend towards natural
working fluids to reduce the effects of global warming and ozone-layer depletion
has sparked the proposal of several refrigeration and combined cooling, heating
and power cycles using CO2. This paper analyzes the performance of a
minichannel-based evacuated-tube solar collector operating with supercritical
CO2 suitable for solar-driven Rankine cycle applications.
Keywords: minichannel, solar collector, Rankine cycle, cogeneration.
Keywords
minichannel, solar collector, Rankine cycle, cogeneration
Related Book
Other papers in this volume
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