Thermo-economics Of An Irreversible
Solar Driven Heat Engine
Author(s)
K. M. Pandey & R. Deb
Abstract
Thermo-economic optimization has to be carried out for an irreversible solar
driven heat engine using finite-time/finite-size thermodynamic theory. In the
considered heat engine model, heat transfer from the hot reservoir is assumed to
be radiation mode and the heat transfer to the cold reservoir is assumed to be
convection mode. The power output per unit total cost is taken as the objective
function. The steps of problem formulation are rightly performed and all valid
assumptions are taken into consideration. The effects of the irreversibility
parameter, economical parameter and the design parameters on the
thermo-economic objective function have been investigated.
Keywords: finite-time/finite-size thermodynamics, irreversible, solar-driven heat
engine, thermoeconomic optimization.
1 Introduction
India is endowed with abundant solar energy for about 70% of the yearly period.
Solar driven heat engine systems, which consist of a solar collector and a heat
engine, have a large potential for saving fossil fuel and decreasing environmental
pollution. The schematic diagram of a solar driven heat engine is shown in fig.1.
The energy from solar radiation is collected and utilized to generate steam to run
turbines. As temperature required for steam generation is considerably high
(200°C), for obtaining reasonably high efficiencies, concentration type of
collectors are used when steam is used as working fluid.
Keywords
finite-time/finite-size thermodynamics, irreversible, solar-driven heat
engine, thermoeconomic optimization.
Related Book
Other papers in this volume
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