Nonlinear modeling and multi-scale influence characteristics analysis of organic Rankine cycle (ORC) system considering variable driving cycles

Xu, Ping; Yang, Fubin; Zhang, Honggang; Xing, Chengda; Pan, Yachao; Zhang, Wujie; Wang, Yan

doi:10.1016/j.energy.2022.126311

Cited by 20 publications

(1 citation statement)

References 60 publications

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“…Wu et al [52] affirmed that the inlet structure was the primary factor affecting the energy conversion efficiency of the scroll expander, and that the energy conversion efficiency can be significantly improved by the characteristics of the inlet in the waist shape in comparison with the circular inlet. Ping et al [53] analyzed the impact of road conditions on the economic performance (WLTC, NEDC, and EUDC)…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation on the Performance of the Scroll Expander under Various Driving Cycles

Yang,

Xu,

Zhong

et al. 2024

Energies

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Energy storage is considered a crucial unit in utilizing renewable energy sources, and compressed air energy storage (CAES) provides a cost-effective solution. It offers the benefits of zero pollution, a long lifespan, low maintenance costs, and minimal environmental impact. In order to increase the possibilities of compressed air energy storage for vehicle power, the performance of the expander needs to be studied. First, a CAES unit test bench is established. Then, the volumetric flow rate, rotational speed, torque, and output power are examined. Additionally, the isentropic exhaust temperature, pressure, and gas consumption rate of the scroll expander are analyzed. Finally, analyzing the economic feasibility of the CAES unit entails running the unit under varied driving conditions. Results reveal that the pressure of the input expander is high, which will lead to greater torque, greater peak power, and a greater temperature drop, but the gas in the air tank will also run out quickly. The peak power of the scroll expander does not occur at the maximum volume flow rate, rotation speed, and torque. The basic investment of the CAES unit mainly depends on the peak output power.

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Section: Introductionmentioning

confidence: 99%

Experimental Investigation on the Performance of the Scroll Expander under Various Driving Cycles

Yang,

Xu,

Zhong

et al. 2024

Energies

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Thermally integrated pumped thermal energy storage systems based on organic Rankine cycle: Comparative investigation and multi‐objective multiverse optimization

Norooziyan,

Noorpoor,

Boyaghchi

2024

Energy Storage

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This work introduces two new thermally integrated pumped thermal energy storage (TIPTES) systems, including thermally integrated vapor compression heat pump (TIHP) as a charging cycle and dual‐pressure organic Rankine cycle (DPORC) and dual‐loop organic Rankine cycle (DLORC) as discharging cycles to investigate their capability of improving roundtrip efficiency compared with the basic ORC (BORC). The thermodynamic and economic performance of the proposed TIHP‐DPORC and TIHP‐DLORC are analyzed and compared with TIHP‐BORC using various working fluids. The multi‐objective multiverse optimization algorithm is conducted to ascertain the systems' optimum roundtrip efficiency and cost rate. Results indicate that at the same storage temperature, the TIHP‐DLORC gives the highest roundtrip and exergy efficiencies of 219.9% and 43.53% with R1233zd(E), indicating 6.69% and 8.04% improvements compared with the optimum TIHP‐BORC. Moreover, it shows the lowest levelized cost of storage (LCOS) and payback period (PP) of 0.160 $/kWh and 4.5 years, respectively, with a maximum net present value of 1.973 M$. Although the cost rate of TIHP‐DLORC is high, its excellent thermodynamic and economic performance compared with the existing TIPTES systems in the literature indicates that DLORC is a more appropriate candidate to be applied in the TIPTES systems.

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Information theory-based dynamic feature capture and global multi-objective optimization approach for organic Rankine cycle (ORC) considering road environment

Yang

Zhang

et al. 2023

Applied Energy

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Nonlinear modeling and multi-scale influence characteristics analysis of organic Rankine cycle (ORC) system considering variable driving cycles

Cited by 20 publications

References 60 publications

Experimental Investigation on the Performance of the Scroll Expander under Various Driving Cycles

Experimental Investigation on the Performance of the Scroll Expander under Various Driving Cycles

Thermally integrated pumped thermal energy storage systems based on organic Rankine cycle: Comparative investigation and multi‐objective multiverse optimization

Information theory-based dynamic feature capture and global multi-objective optimization approach for organic Rankine cycle (ORC) considering road environment

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