Cascade utilization of exhaust gas and jacket water waste heat from an Internal Combustion Engine by a single loop Organic Rankine Cycle system

Ma, Jiacheng; Liu, Liuchen; Zhu, Tong; Zhang, Tao

doi:10.1016/j.applthermaleng.2016.06.144

Cited by 42 publications

(6 citation statements)

References 28 publications

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“…This result was caused by the fact that the addition of jacket water limits the increase in the evaporation temperature of R245ca. The results matched with the previous results in article [ 7 ]. The analysis results suggested that the suitable working fluid for JW→EG, SA→EG, and JW→SA→EG is R134a, R245ca, and R245fa, respectively.…”

Section: Resultssupporting

confidence: 92%

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Performance Analysis and Optimization of a Series Heat Exchangers Organic Rankine Cycle Utilizing Multi-Heat Sources from a Marine Diesel Engine

Tang

2021

Entropy

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Organic Rankine Cycle (ORC) is an effective way to recycle waste heat sources of a marine diesel engine. The aim of the present paper is to analyze and optimize the thermoeconomic performance of a Series Heat Exchangers ORC (SHEORC) for recovering energy from jacket water, scavenge air, and exhaust gas. The three sources are combined into three groups of jacket water (JW)→exhaust gas (EG), scavenge air (SA)→exhaust gas, and jacket water→scavenge air→exhaust gas. The influence of fluid mass flow rate, evaporation pressure, and heat source recovery proportion on the thermal performance and economic performance of SHEORC was studied. A single-objective optimization with power output as the objective and multi-objective optimization with exergy efficiency and levelized cost of energy (LCOE) as the objectives are carried out. The analysis results show that in jacket water→exhaust gas and jacket water→scavenge air→exhaust gas source combination, there is an optimal heat recovery proportion through which the SHEORC could obtain the best performance. The optimization results showed that R245ca has the best performance in thermoeconomic performance in all three source combinations. With scavenge air→exhaust, the power output, exergy efficiency, and LCOE are 354.19 kW, 59.02%, and 0.1150 $/kWh, respectively. Integrating the jacket water into the SA→EG group would not increase the power output, but would decrease the LCOE.

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Section: Resultssupporting

confidence: 92%

“…The results indicated that the preheated ORC has a higher power output than a simple ORC. Ma et al [ 7 ] proposed a cascade utilization method to recover energy from exhaust gas and jacket water simultaneously. The results showed that full recovery of the jacket water with a single ORC loop could have a lower power output.…”

Section: Introductionmentioning

confidence: 99%

Performance Analysis and Optimization of a Series Heat Exchangers Organic Rankine Cycle Utilizing Multi-Heat Sources from a Marine Diesel Engine

Tang

2021

Entropy

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“…In recent decades, the rate of patent applications in waste heat recovery technology has increased [2]. In addition to increasing efficiency, they also reduce fuel consumption [3] and help car manufacturers to control and reduce pollutants [4]. Much research has been done on energy recovery from internal combustion engines and various cycles have been used.…”

Section: Introductionmentioning

confidence: 99%

A Combined Power and Ejector Refrigeration Cycle System for Thermal Energy Recovery from the Waste Heat of Internal Combustion Engine

Goudarzi,

Taghizadeh

2023

J Energ Power Technol

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In this paper, due to the importance of energy recovery from internal combustion engines and the increasing human growing need for power and refrigeration, a two-cycle power and refrigeration system consisting of an organic Rankine cycle and an ejector refrigeration cycle is investigated analytically. The proposed system with the ability to use the ejector<span dir="RTL"> as an effective and economical system, can produce simultaneous power and refrigeration by drawing thermal energy from the exhaust gas and engine coolant in the form of a novel cycle. This study analyzes the proposed novel two-cycle Rankine-ejector refrigeration system (TCReRS) compared to a two-cycle Rankine-absorption refrigeration system (TCRARS). It was concluded that the TCReRS with higher output and a COP of about 69.99%, is a useful and promising system under the considered condition. The proposed system uses environmentally friendly R1233zd and R32 fluids as operating fluids in Rankine power and ejector refrigeration cycles, respectively. In addition, the effect of system performance parameters has been investigated and optimized.

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“…The heat of the exhaust gas (EG) and jacket cooling water (JCW) account for more than 60% of the marine waste heat [6], which is the most valuable waste heat to be recovered. Ma et al [7] designed a basic ORC with the JCW and the EG as the heat source. Yang et al [8][9][10] developed two independent basic ORC systems to recover the EG and JCW waste heat.…”

Section: Introductionmentioning

confidence: 99%

Investigation of a Dual-Loop ORC for the Waste Heat Recovery of a Marine Main Engine

et al. 2022

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As carbon dioxide emissions arising from fossil energy consumption and fossil fuels are gradually increased, it is important for the low-carbon operation of ships to recover diesel engine waste heat. A newly developed dual-loop organic Rankine cycle (ORC) system to recover waste heat from a marine main engine (M/E) was designed in this paper. The exhaust gas (EG) heat was recovered by the high-temperature (HT) loop. The jacket cooling water (JCW) heat and the condensation heat of the HT loop were recovered by the low-temperature (LT) loop. Toluene, cyclohexane, benzene, R1233zd (E), R245fa, and R227ea were selected as the working fluids. The influence of the condenser thermal parameters on the LT loop was analyzed using the pinch point method. The performance of the dual-loop ORC was investigated under various working fluid combinations. The maximum net power of the HT loop can reach 253.4 kW when using cyclohexane as the working fluid, and the maximum thermal efficiency of the HT loop can reach 18.5% with benzene as the working fluid. Meanwhile, higher condensation temperatures and levels of condensation heat of the HT loop have a positive effect on the performance of the LT loop. However, in most conditions, the HT loop condensation heat could not provide enough heat for the LT loop’s working fluid to start the boiling process. The total net power of the dual-loop ORC system was 410.6 kW with Cyclohexane in the HT loop and R1233zd (E) in the LT loop, resulting in a 10.9% improvement in the marine main engine thermal efficiency.

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Cascade utilization of exhaust gas and jacket water waste heat from an Internal Combustion Engine by a single loop Organic Rankine Cycle system

Cited by 42 publications

References 28 publications

Performance Analysis and Optimization of a Series Heat Exchangers Organic Rankine Cycle Utilizing Multi-Heat Sources from a Marine Diesel Engine

Performance Analysis and Optimization of a Series Heat Exchangers Organic Rankine Cycle Utilizing Multi-Heat Sources from a Marine Diesel Engine

A Combined Power and Ejector Refrigeration Cycle System for Thermal Energy Recovery from the Waste Heat of Internal Combustion Engine

Investigation of a Dual-Loop ORC for the Waste Heat Recovery of a Marine Main Engine

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