Quantifying energy-related CO2 emissions reduction potential of a proposed organic rankine cycle system for exhaust heat recovery application in commercial trucks

Thaddaeus, Julius; Asukwo, Emmanuel Okon; Ibrahim, Tanimu Kogi; Iroka, Jude; Iwokette, Udofia  Joyful

doi:10.1016/j.egycc.2022.100083

Cited by 2 publications

(1 citation statement)

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“…According to reports, the transportation industry accounts for 16.2% of worldwide GHG (greenhouse gas) emissions, with road transportation accounting for 11.9%, causing significant environmental damage. Trucks account for approximately 22% of GHGs in the transportation industry [6], which is the foundation for this study. As a result, capturing a portion of the exergy in this waste stream has immense potential for reducing CO2 emissions while boosting engine thermal efficiency.…”

Section: Introductionmentioning

confidence: 99%

An Environmental Impact Assessment of an Orc-Based Exhaust Heat Recovery System for Application in Vehicles

Thaddaeus,

Ezeaku

2023

J. eng. sustain. dev.

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The paper presents the study performed to assess the environmental consequences of a proposed organic Rankine cycle-based exhaust heat recovery system for application in vehicles. A life-cycle assessment of fifteen (15) midpoints and two (2) endpoint levels was performed using the SimaPro database to determine the potential environmental consequences of the main parts of the proposed system resulting from the various raw materials used in these parts. The performance results of the organic Rankine cycle-based exhaust heat recovery system show that it can generate up to 3.10 kW of net power output from the engine exhaust, which otherwise is released into the environment as waste heat, with a thermal efficiency of 6.36%. The life-cycle assessment results show that the presence of steel in these components is responsible for the majority of these environmental consequences. The evaporator showed the highest impact potential, with values ranging from 37% in marine eutrophication to 72% in ionizing radiation. From the two (2) endpoint impact assessments, it is clear that the pump has the maximum human health impact potential of 0.0138 DALY, with the condenser having the lowest contribution of 0.0005 DALY. The evaporator and condenser contribute 2297.25 PDF.m2.yr and 158.30 PDF.m2.yr ecosystem quality impact potentials, respectively, as the highest and lowest. Therefore, the organic Rankine cycle-based exhaust heat recovery system has relatively little impact potential on climate change threats, with a value of 1.37E-03 kgCO2.

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Section: Introductionmentioning

confidence: 99%