Experimentally economic analysis of ORC power plant with low-temperature waste heat recovery

Li, Lei; Lei, Tao; Li, Qingpu; Hu, Yongpan

doi:10.1093/ijlct/ctaa032

Cited by 10 publications

(3 citation statements)

References 39 publications

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“…Thus, the cycle is very simple and only few components are required (Fig. 8) [30][31][32][33][34][35]:…”

Section: The Bottoming Orc Cyclementioning

confidence: 99%

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Mild Hybrid Multi-Energy Systems: Waste Energy Recovery by Bottom ORC System

Capata

2023

36th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 20

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The goal of this paper is to evaluate, from a thermodynamic point of view first, and then constructive one, the possibility of inserting a waste heat recovery system in a hybrid vehicle in mild-hybrid configuration. The vehicle considered is a standard 1000 cc gasoline turbocharged ICE. The characteristic and proposed configuration of the vehicle allows to mechanically separate the existing turbo-compressor unit and to couple them with the respective electrical devices: electric motor and generator. This new architecture enables an electrical generation that can be used to recharge the installed battery package. Moreover, thanks to the new configuration of the turbine of the group, i.e. without the wastegate valve, the turbomachinery provides a high gas flow rate at high temperature (about 380 °C). These exhaust gases can be used for a bottom ORC group, with additional electricity generation. All these considerations permit to have an extra on-board recharge of the batteries, to consequently increase the electric range of the vehicle (a sort of range extender) and to install a battery group of limited size and power, with consequent advantages of payload and vehicle efficiency. Besides, it allows to achieve the well know and inflated aspects (from a citation point of view) of the emissions reduction.

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“…Thus, the cycle is very simple and only few components are required (Fig. 8) [30][31][32][33][34][35]:…”

Section: The Bottoming Orc Cyclementioning

confidence: 99%

“…The current state of research focuses on the advisability of using a helical evaporator [36] for the ORC plant. For the study of the expander we will follow the procedure described in previous papers [31][32][33][34][35][36][37], trying to define the more efficient device. Only the condenser is under evaluation.…”

Section: The Bottoming Orc Cyclementioning

confidence: 99%

Mild Hybrid Multi-Energy Systems: Waste Energy Recovery by Bottom ORC System

Capata

2023

36th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 20

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“…The Organic Rankine Cycle can be used to recover energy from exhaust gases, such as electric trains and boats, improving fuel consumption and reducing their environmental impact [6]. The interesting, perhaps new, aspect is that in almost all cases, when researchers talk about ORC systems, they are talking about stationary configurations [5][6][7][8][9][10]. Apart from that, there are a lot of works on small ORC systems.…”

Section: Introductionmentioning

confidence: 99%

Condenser Design for On-Board ORC Recovery System

Capata

Piras

2021

Applied Sciences

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In this study, an ORC plant is considered that recovers the heat source from 1800 cc Diesel Engine exhaust gases. The power recovered by the ORC system could be used, as an auxiliary system, to provide energy to the electronic parts of the car. The purpose of this study is to investigate the possibility of allocating this ORC plant into a vehicle and in the design of the condenser, with the purpose of reaching the best configurations that lead to low-pressure drop and compact dimensions. The Organic Rankine Cycle converts thermal energy from low-grade heat sources into electricity. The thermodynamic cycles to produce 5 kW were simulated using a custom software application. The basic cycle was chosen to guarantee the most compact configurations. The selected thermodynamic parameters are based on the need to cope with atmospheric conditions. The working fluid chosen is R245fa, due to its thermodynamic characteristics. Since the electrical part would be partially satisfied by this system, the entire power of the thermal engine would be dedicated to mechanical use. It could also be assumed that, as a consequence of the settings of this plant, a reduction in fuel consumption could be expected, which, although at a percentage that cannot be theoretically evaluated at the moment, is nevertheless predictable. In this first stage of the evaluation, the condenser design is presented and analyzed.

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