ADVANCED EXERGY ANALYSIS OF AN ORGANIC RANKINE CYCLE WASTE HEAT RECOVERY SYSTEM OF A MARINE POWER PLANT

Year 2017, , 1136 - 1148, 01.04.2017

Turgay Koroglu

https://doi.org/10.18186/thermal.298614

Cited By: 16

Abstract

Energy efficiency has a
great importance to reduce both fuel consumption and greenhouse gas emissions,
which are the most important focus points for researchers in maritime industry.
Exergy analysis, which is widely used to design, analyze and evaluate thermal
energy systems, plays an important role to increase energy efficiency. It
reveals destruction of available energy in components and leads the researcher
to achieve better engineering and systems. Advanced exergy analysis has the
capability to reveal the interconnections among system components and
improvement potential of inspected components and also the overall system.

Steam cycle is used in
ships as main or auxiliary power production means for a long time. Also, it is
used to recover waste heat from high temperature exhaust gases. Organic rankine
cycle (ORC) is an alternative energy recovery strategy to utilize relatively
low temperature heat sources to produce power. Usage of ORC in marine power
plants is relatively new field to explore.

In this paper, a marine
power plant with ORC is investigated. Energy and exergy analyses have been
carried out to identify conditions and parameters that affect the efficient
operation of the system. Then, a parametric study has been conducted to
determine the optimum range of operation for power plant and ORC considering
different load conditions. Finally, exergy destruction of each component is
calculated to give further insight information about the potential of
improvement for the efficient operation.

Keywords

Marine Power Plant, Combined Cycle, Organic Rankine Cycle, Advanced Exergy Analysis

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