Dynamic performance analysis of solar organic Rankine cycle with thermal energy storage

Li, Shuai; Ma, Hongjie; Li, Weiyi

doi:10.1016/j.applthermaleng.2017.10.021

Cited by 45 publications

(8 citation statements)

References 18 publications

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“…Thermal losses in the charging and discharging process are neglected. Overall heat transfer coefficient of working fluid in liquid zones and two-phase zones are assumed to be constant [36]. (11) where hwf represents the Overall heat transfer coefficient of working fluid at liquid zones and two-phase zone.…”

Section: Discharging Process For Ltesmentioning

confidence: 99%

“…Considering the practical vehicle application conditions, the condensing temperature is set within the range of 35~60 ℃ [14,24], in this paper it is set as 45 ℃. The heat transfer coefficients of working fluid in the liquid state, two-phase state and vapour state are given reference value [36]. The organic fluid enthalpies and other parameters are functions of the evaporating temperature chosen for the ORC and they are calculated with REFPROP.…”

Section: Discharging Process For Ltesmentioning

confidence: 99%

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

et al. 2019

Energy

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In this work, organic Rankine cycle (ORC) integrated with Latent Thermal Energy Storage (LTES) system for engine waste heat recovery has been proposed and investigated to potentially overcome the intermittent and fluctuating operational conditions for vehicle applications. A melting-solidification model has been established to investigate and compare the performance of twelve Phase Change Materials (PCMs) under different heat source conditions. Among the twelve PCMs, LiNO3-KCl-NaNO3 is identified as the optimal PCM for engine exhaust heat recovery. The performance of the ORC system integrating with different volume of LTES using LiNO3-KCl-NaNO3 under dynamic heat source simulating vehicle conditions is studied. Results illustrate the fluctuation of engine exhaust heat can be potentially overcome by using the proposed solution. The condition of 100 L LTES provides 30.4% larger total output work than that of 50 L LTES, while it is merely 1.5% larger than that of 90 L LTES.The performance of three different LTES-ORC scenarios are compared and results show ORC combining with double LTES delivers 17.2% larger total power output than that of single LTES (100 L) under the same operational conditions.

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Section: Discharging Process For Ltesmentioning

confidence: 99%

Section: Discharging Process For Ltesmentioning

confidence: 99%

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

et al. 2019

Energy

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“…It was added that by utilizing heat storage into the system, constant and smooth performance can be attained over a long period. Li et al [27] discuss the dynamic performance of SORC with TES. The impact of storage capacity, solar variation, and evaporation temperature were examined.…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic Performance Analysis of Solar Based Organic Rankine Cycle Coupled with Thermal Storage for a Semi-Arid Climate

2021

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This study focuses on the thermodynamic performance analysis of the solar organic Rankine cycle (SORC) that uses solar radiation over a moderate temperature range. A compound parabolic collector (CPC) was adjusted to collect solar radiation because of its long-lasting nature and featured low concentration ratios, which are favorable for moderate temperature applications. A thermal storage tank was fixed to preserve the solar energy and ensure the system’s continuous performance during unfavorable weather. However, water was used as the heat transfer fluid and R245fa was used as the working fluid in this system. The performance in both the hottest and coldest months was analyzed using the average hourly profile in MATLAB using weather data from Riyadh, Saudi Arabia. Variations in the tank temperature during the charging and discharging modes were found. The hourly based thermal efficiency and net power output for both configurations were also compared. The results show that at 17:00, when the cycle was about to shut down, the thermal efficiency was 12.79% and the network output was 16 kW in July, whereas in January, the efficiency was ~12.80% and the net power output was 15.54 kW.

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“…A wide range of LTES using PCMs have been applied and studied in solar power plants and solar heating systems [7,8]. For example, Li et al [9] investigated the dynamic performance of a solar ORC system integrated with LTES considering solar disturbance. In the study, LTES is considered as a homogeneous heat capacity without considering the internal heat transfer process.…”

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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Dynamic performance analysis of solar organic Rankine cycle with thermal energy storage

Cited by 45 publications

References 18 publications

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

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

Thermodynamic Performance Analysis of Solar Based Organic Rankine Cycle Coupled with Thermal Storage for a Semi-Arid Climate

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

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