Thermal Energy Processes in Direct Steam Generation Solar Systems: Boiling, Condensation and Energy Storage – A Review

Dirker, Jaco; Juggurnath, Diksha; Kaya, Alihan; Osowade, Emmanuel A.; Simpson, Michael; Lecompte, Steven; Abadi, S.M.A. Noori Rahim; Voulgaropoulos, Victor; Adelaja, Adekunle O.; Dauhoo, Muhammad Zaid; Khoodaruth, Abdel; Obayopo, S.O.; Olakoyejo, Olabode Thomas; Elahee, M.K.; Paepe, Michel De; Meyer, Josua P.; Markides, Christos N.

doi:10.3389/fenrg.2018.00147

Cited by 32 publications

(17 citation statements)

References 330 publications

(377 reference statements)

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“…Enhancement of boiling heat transfer is a continued goal of heat transfer research in order to enable or promote a diverse range of technologies. It can lead to more efficient and economically favourable energy systems, from small footprint refrigeration systems to more affordable solar power plants [1]. The passive enhancement of boiling through surface modification has been conducted for decades through the addition of microstructures such as fins to increase the heat transfer area or re-entrant cavities [2], as well as the roughening of surfaces [3] to increase nucleation site density.…”

Section: Introductionmentioning

confidence: 99%

Pool boiling of refrigerants over nanostructured and roughened tubes

Bock

Bucci

Markides

et al. 2020

International Journal of Heat and Mass Transfer

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Section: Introductionmentioning

confidence: 99%

Pool boiling of refrigerants over nanostructured and roughened tubes

Bock

Bucci

Markides

et al. 2020

International Journal of Heat and Mass Transfer

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“…In the context of thermal power-generation, a number of relatively mature technologies are being proposed for deployment in a wide range of applications, including systems based on a variety of power cycles. Serrano et al [12] and Dirker et al [13] explored the potential of using steam Rankine cycle systems for engine waste-heat recovery and solar energy utilization, respectively; Schuster et al [14] conducted energetic and economic investigation of organic Rankine cycle (ORC) systems for different applications; Lecompte et al [15] focused on the specific waste-heat recovery applications with various ORC architectures; while Bommbarda et al [16] and Reddy et al [17] studied the performance of Kalina cycle systems and conducted comparisons with other technologies. In addition, earlier-stage technologies that are still under development, such as thermoacoustic [18,19] and, more recently, thermofluidic devices, have also attracted attention due to their reduced complexity and costs.…”

Section: Introductionmentioning

confidence: 98%

Thermodynamic and economic investigations of transcritical CO2-cycle systems with integrated radial-inflow turbine performance predictions

Song

Ren

et al. 2020

Applied Thermal Engineering

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Transcritical CO2 (TCO2) cycle systems have emerged as a promising power-generation technology in certain applications. In conventional TCO2-cycle system analyses reported in the literature, the turbine efficiency, which strongly determines the overall system performance, is generally assumed to be constant. This may lead to suboptimal designs and optimization results. In order to improve the accuracy and reliability of such system analyses and offer insight into how knowledge of these systems from earlier analyses can be interpreted, this paper presents a comprehensive model that couples TCO2-cycle calculations with preliminary turbine design based on the mean-line method. Turbine design parameters are optimized simultaneously to achieve the highest turbine efficiency, which replaces the constant turbine efficiency used in cycle calculations. A case study of heat recovery from an internal combustion engine (ICE) using a TCO2-cycle system with a radial-inflow turbine is then considered, with results revealing that the turbine efficiency is influenced by the system's operating conditions, which in turn has a significant effect on system performance in both thermodynamic and economic terms. A more generalized heat source is then considered to explore more broadly the role of the turbine in determining TCO2-cycle power-system performance. The more detailed turbine-design modelling approach allows errors of the order of up to 10-20% in various predictions to be avoided for steady-state calculations, and potentially of an even greater magnitude at off-design operation. The model allows quick preliminary designs of radial-inflow turbines and reasonable turbine performance predictions under various operating conditions, and can be a useful tool for more accurate and reliable thermo-economic studies of TCO2-cycle systems.

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“…The consumption of the resources will present significant environmental risks, through global warming [4]. The solar energy as clean, abundant, renewable and new energy has been used widely in construction, transportation, communication and other fields [5][6][7]. Solar energy represents one of the most important energy sources.…”

Section: Introductionmentioning

confidence: 99%

Optimization Of Thermal Module Solar Photovoltaic Using CFD-Simulation

Hamad¹,

Mohammed

Jabbar

2022

IOP Conf. Ser.: Earth Environ. Sci.

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Photovoltaic panels can directly generate electricity by converting solar energy, but the panels temperature reduce the efficiency of photovoltaic cells. The photovoltaic thermal PVT system technology is used to improve the electrical performance. In this study, the daily and monthly global solar radiation on a horizontal surface for Iraq have been measured and presented then used with PVT water system. ANSYS software is used to simulate the water temperature differences behavior and measure the surface temperature of PVT model using the collected irradiation with the mass flow rate at 0.01 and 0.02 kg per second. The CFID results were validated with previous studies and observed a good agreement. The simulation tests apply a constant input temperature to the PVT system in all the yearly weather conditions in order to enhance the surface temperature. The results observe the PVT thermal efficiency behavior and show the maximum enhancement which is reached to 61% with the mass flowrate 0.03 kg per second and constant low input temperature.

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Thermal Energy Processes in Direct Steam Generation Solar Systems: Boiling, Condensation and Energy Storage – A Review

Abstract: solar collectors, evaporators, condensers and relevant energy storage schemes during thermal charging and discharging. A brief overview of some energy storage options are also presented to motivate the inclusion of thermal energy storage into direct steam generation systems.

Cited by 32 publications

References 330 publications

Pool boiling of refrigerants over nanostructured and roughened tubes

Pool boiling of refrigerants over nanostructured and roughened tubes

Thermodynamic and economic investigations of transcritical CO2-cycle systems with integrated radial-inflow turbine performance predictions

Optimization Of Thermal Module Solar Photovoltaic Using CFD-Simulation

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