Investigation of organic Rankine cycle integrated with double latent thermal energy storage for engine waste heat recovery

Yu, Xiaoli; Li, Zhi; Lu, Yiji; Huang, Rui; Roskilly, Anthony Paul

doi:10.1016/j.energy.2018.12.196

Cited by 81 publications

(14 citation statements)

References 36 publications

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“…Cases 2 and 3 also shows that LiNO3-KCl-NaNO3 is the optimal PCM for this temperature range. Whilst other PCM options show a slight increase in total work output for the system, the LiNO3-KCl-NaNO3 has by far the largest discharge time, meaning the ORC can maintain a stable temperature profile for a total of 48.8 minutes whilst also generating a large amount of power output [8].…”

Section: Double Latent Thermal Energy Storage Integrationmentioning

confidence: 99%

“…Yu et al investigated the integration of double Latent Thermal Energy Storage (LTES) into a standard ORC setup [8]. In this study, the authors evaluate the effectiveness of different Phase Changing Materials (PCMs) utilised in such configurations in order to overcome the unsteady nature of exhaust gases of which an ORC must work upon.…”

Section: Orc With Integrated Double Latent Thermal Energy Storagementioning

confidence: 99%

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A comparative analysis of waste heat recovery systems in vehicles and their viability in real-world applications

Veigh¹,

Glynatsis²,

Gurung³

et al. 2019

PAMR

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In motor vehicles, an average of 60-70% of the overall fuel energy is dissipated primarily through the heated exhaust gases and engine coolant, which accounts for 90% of an engine’s thermal output. The fuel efficiency and environment impact of vehicles can therefore be improved by implementation of systems designed to recover this wasted energy. This meta- study explores the current methods for waste heat recovery (WHR) currently in production and research phases. A comparison is also made between the thermodynamic viability of each proposed system, from which future strategies to maximise the efficiency of WHR systems can be obtained. These include the use of the organic Rankine cycle (ORC), thermoelectric generators (TEG), and regenerative braking. The purpose of this paper is to analyse the current state of research for waste heat recovery in vehicles and therefore provide a basis for further research and investigation. The results indicate a promising future for further study of ORCs in the field of WHR for internal combustion engines (ICE) in vehicles. This is due to the various design opportunities that ORCs offer, including multiple loop configurations, different working fluids and integration of thermal energy storage devices. Current research for TEGs indicate a high cost to efficiency ratio for the materials required for production, meaning that TEGs are not as viable of a solution for WHR in vehicles relative to ORCs. This paper concludes that a fuel savings of 8-19% can be achieved through the integration of multiple energy recovery systems. Keywords: Waste Heat Recovery; Vehicles; Thermodynamics; Organic Rankine Cycle; Thermoelectric Generators; Regenerative Braking; Exergy

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Section: Double Latent Thermal Energy Storage Integrationmentioning

confidence: 99%

Section: Orc With Integrated Double Latent Thermal Energy Storagementioning

confidence: 99%

A comparative analysis of waste heat recovery systems in vehicles and their viability in real-world applications

Veigh¹,

Glynatsis²,

Gurung³

et al. 2019

PAMR

View full text Add to dashboard Cite

show abstract

“…The research on ORC is not limited to only the configuration itself but also includes the energy storage system. For instance [43], managed to integrate a double latent thermal energy storage into the ORC system for engine WHR. Moreover, the planned solution was also able to reduce the fluctuation of the engine exhaust heat.…”

Section: Rankine Cyclementioning

confidence: 99%

Organic Rankine Cycle Waste Heat Recovery for Passenger Hybrid Electric Vehicles

Ramli

Pesyridis

Gohil³

et al. 2020

Energies

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Electrification of road transport is a major step to solve the air quality problem and general environmental impact caused by the still widespread use of fossil fuels. At the same time, energy efficiency in the transport sector must be improved as a steppingstone towards a more sustainable future. Multiple waste heat recovery technologies are being investigated for low-temperature waste heat recovery. One of the technologies that is being considered for vehicle application is the Organic Rankine Cycle (ORC). In this paper, the potential of ORC is discussed in detail for hybrid vehicle application. The modelling and testing of multiple systems such as the hybrid vehicle, engine, and ORC waste heat recovery are performed using the computational approach in GT-SUITE software environment correlated against available engine data. It was found that the maximum cycle efficiency achieved from the ORC system was 5.4% with 2.02 kW of delivered power recovered from the waste heat available. This led to 1.0% and 1.2% of fuel economy improvement in the New European Driving Cycle (NEDC) and Worldwide Harmonised Light Vehicle Test Procedure (WLTP) driving cycle test, respectively. From the driving cycle analysis, Hybrid Electric Vehicles (HEV) and ORC are operative in a different part of the driving cycle. This is because the entire propulsion power is provided by the HEV system, resulting in less engine operation in some part of the cycle for the ORC system to function. Apart from that, a brief economic analysis of ORC Waste Heat Recovery (WHR) is also performed in this paper and a comparative analysis is carried out for different waste heat recovery technologies for hybrid vehicle application.

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“…In this study, the PCM was simplified as big heat capacity and the results indicated that the PCM-based system could significantly reduce the thermal power fluctuating of the heat source and enlarge the high-efficiency working zone. Yu et al [12] designed an ORC system using the concept of double shell-and-tube LTES. This study considered the effects of PCM thermophysical properties and LTES volume on the performance of the proposed ORC system to recover fluctuating thermal energy.…”

Section: Introductionmentioning

confidence: 99%

Effects of fluctuating thermal sources on a shell-and-tube latent thermal energy storage during charging process

Zhi

Wang

et al. 2020

Energy

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Investigation of organic Rankine cycle integrated with double latent thermal energy storage for engine waste heat recovery

Cited by 81 publications

References 36 publications

A comparative analysis of waste heat recovery systems in vehicles and their viability in real-world applications

A comparative analysis of waste heat recovery systems in vehicles and their viability in real-world applications

Organic Rankine Cycle Waste Heat Recovery for Passenger Hybrid Electric Vehicles

Effects of fluctuating thermal sources on a shell-and-tube latent thermal energy storage during charging process

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