Original scientific paper
The Possibility of Energy Generation within the Conventional Natural Gas Transport System
Wojciech KOSTOWSKI
; Institute of Thermal Technology, Silesian University of Technology, Gliwice, Poland
Abstract
The paper presents the possibility of electricity generation at the pressure
reduction stations (PRS) in the conventional system of natural gas transmission
and distribution. The main deficiency of the conventional system is its
thermodynamic irreversibility, i.e. the loss of potential work that could be
generated while reducing the gas pressure. Within the first part of work, a
thermodynamic model was created to analyze changes in energy and exergy
within the gas transport system. The second part of work deals with the
application of turboexpanders (expansion turbines) which may be used to
generate electricity while reducing the gas pressure. A thermodynamic model
of the turboexpander system was created and the relevant thermodynamic
indicators were defined. Case studies for two different PRS were performed
to analyze the thermodynamic quality and the economic feasibility of
turboexpander application for varying design parameters, i.e. the gas preheating
rate and the expander isentropic efficiency.
Keywords
Analiza prema drugom zakonu termodinamike; Eksergija; Turboekspander (turbina); Prirodni plin; Prijenos i distribucija
Hrčak ID:
64456
URI
Publication date:
31.8.2010.
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