Investigation of Different Storage Systems for Solar-Driven Organic Rankine Cycle

Bellos, Evangelos; Sarakatsanis, Ioannis; Tzivanidis, Christos

doi:10.3390/asi3040052

Cited by 10 publications

(6 citation statements)

References 37 publications

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“…The properties of liquid density (ρ l ) and enthalpy (∆h l ) were determined using the CoolProp library [64,65], taking the density at the average temperature (T h + T c )/2. As for the void fraction, its value has been estimated in the order of those used by [59,62,66,67]. Density (ρ s ) and heat capacity (c s ) values for the solid filler have also been chosen according to [66].…”

Section: Tes System (2 Tank Directmentioning

confidence: 99%

“…As for the void fraction, its value has been estimated in the order of those used by [59,62,66,67]. Density (ρ s ) and heat capacity (c s ) values for the solid filler have also been chosen according to [66]. Table 2 shows the input parameters that determine the performance of the ORC and the final thermal oil loop temperature.…”

Section: Tes System (2 Tank Directmentioning

confidence: 99%

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Solar Desalination Driven by Organic Rankine Cycles (Orc) and Supercritical CO2 Power Cycles: An Update

Delgado-Torres

Garcı́a-Rodrı́guez

2022

Processes

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In the field of desalination powered by renewable energies, the use of solar power cycles exhibits some favorable characteristics, such as the possibility of implementing thermal energy storage systems or a multi-generation scheme (e.g., electricity, water, cooling, hydrogen). This article presents a review of the latest design proposals in which two power cycles of great potential are considered: the organic Rankine cycle and the supercritical CO2 power cycle, the latter of growing interest in recent years. The designs found in the literature are grouped into three main types of systems. In the case of solar ORC-based systems, the option of reverse osmosis as a desalination technology is considered in medium-temperature solar systems with storage but also with low-temperature using solar ponds. In the first case, it is also common to incorporate single-effect absorption systems for cooling production. The use of thermal desalination processes is also found in many proposals based on solar ORC. In this case, the usual configuration implies the cycle’s cooling by the own desalination process. This option is also common in systems based on the supercritical CO2 power cycle where MED technology is usually selected. Designs proposals are reviewed and assessed to point out design recommendations.

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Section: Tes System (2 Tank Directmentioning

confidence: 99%

Section: Tes System (2 Tank Directmentioning

confidence: 99%

Solar Desalination Driven by Organic Rankine Cycles (Orc) and Supercritical CO2 Power Cycles: An Update

Delgado-Torres

Garcı́a-Rodrı́guez

2022

Processes

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“…Although the direct design had better yearly efficiency and output power than the indirect, the indirect configuration had a more considerable annual heat stored by the PCM and a higher capacity factor. Bellos et al 24 investigated the influence of three different TESs on the PTC‐driven solar‐ORC. Compared to sensible thermal oils and thermal oil‐ceramic pebbles, the PCM acquired 13.97% and 128.66k€ thermal and net present value (NPV), respectively.…”

Section: Introductionmentioning

confidence: 99%

The theoretical approach of the solar organic Rankine cycle integrated with phase change material for the Hungarian region

Permana,

Rusirawan,

Farkas

2023

Energy Science & Engineering

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Hungary is not only dependent on imports of natural gas and fossil fuels, but Hungary is also the lowest in renewable energy utilization; otherwise, only 11.3% compared to other Central European countries in renewable energy utilization, above 13%. The percentage of renewables in power generation quadrupled from 8% to 16% between 2010 and 2020, with most of the gains coming from the rapid expansion of solar energy, particularly after 2016. Regarding solar energy resource potential, Hungary has a daily total of around 3.2–3.6 kWh/m2 and a yearly total of about 1168–1314 kW.h/m2. This makes it a suitable location for putting solar thermal collectors in conjunction with an organic Rankine cycle (ORC) system. In this study, the authors analyzed solar thermal as a heat source to generate electricity with ORC using two types of working fluids (R245fa and R123). Hungary's weather data for a whole year is used as primary data to look for solar radiation characteristics and ambient temperature. Based on the general solar collector equation, the parabolic tube collector was selected as the best solar collector to utilize solar radiation by producing a maximum heat of around 654.68 kW. Therefore, the evacuated flat plate collector was selected as the solar collector that can produce the maximum outlet temperature of around 372.15 K with a similar size aperture area. Producing a temperature output from the solar collector for heat transfer in the ORC system and from the performance showed that R245fa resulted in better Wnet performance compared with R123 with values of 45.82 and 28.17 kW, respectively, under the same solar collector. Meanwhile, the material suitable for the thermal energy storage‐evaporator combination is organic phase change material using N‐Octacosane, which in the same temperature range (350–375 K) has the smallest ζ(T) value (1.08–1.103), so the mass required for the system is very efficient.

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“…Rafique et al 3 presented a comprehensive analysis of the perspective of solar energy and its potential in Pakistan. Bellos et al 4 utilized parabolic trough collectors to study different systems for thermal storage of solar-fed organic Rankine cycle systems. Solar energy is stimulated by introducing a multiple-effect boiling evaporator by Kalogirou 5 as it is decided as the most appropriate scheme for solar energy.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulations of Environmental Energy Features in Solar Pump Application by Using Hybrid Nanofluid Flow: Prandtl-Eyring Case

Jamshed

Safdar

Brahmia

et al. 2022

Energy & Environment

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As the primary energy source derived from the sun, solar energy is widely utilized in various technologies, including photovoltaic cells as well as the solar types of energy plates, street lights, and water pumping. This era is about studying solar radiations and a way to active enhancements in solar power pump (SWP) efficacy with the use of solar radiations and nanotechnology. Communication is structured to examine the capability of SWP in terms of transfer of heat using a hybrid nanofluid passing through a parabolic trough surface collector (PTSC) placed inside the pipeline of SWP. Solar radiation has been considered a heat source. The performance in terms of heat transfer of the SWP is scrutinized for various effects like porous media, viscous dissipation, radiative heat flux, and Cattaneo–Christov heat flux (C–CHF). Entropy generation analysis is also conducted for Prandtl – Eyring fluid (P-EF). The simulated momentum and energy equations were solved using the Keller box technique, which is a well-known numerical approach. For this work, Prandtl – Eyring hybrid nanofluid (P-EHNF) has been considered, consisting of double diverse kinds of nanotubes (NT), including single-walled carbon nanotubes (SWCNT) and multi-walled carbon nanotubes (MWCNT) in the rich, viscous fluid of kind Sodium Alginate (SA). The impact of various parameters on velocity, temperature fields, shear stress, coefficient of drag force, and Nusselt number are investigated and demonstrated in graphs and tables. The SWP experience an enhancement in the transfer of heat for amplification of the parameters of thermal radiative flow as well as viscous dissipation. In comparison with conventional nanofluid, hybrid nanofluid performs better in heat transmission. The thermal efficacy of MWCNT/SWCNT-SA over SWCNT-SA got down to a minimal level of 39.9% and peaked at 42.2%.

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Investigation of Different Storage Systems for Solar-Driven Organic Rankine Cycle

Cited by 10 publications

References 37 publications

Solar Desalination Driven by Organic Rankine Cycles (Orc) and Supercritical CO2 Power Cycles: An Update

Solar Desalination Driven by Organic Rankine Cycles (Orc) and Supercritical CO2 Power Cycles: An Update

The theoretical approach of the solar organic Rankine cycle integrated with phase change material for the Hungarian region

Numerical Simulations of Environmental Energy Features in Solar Pump Application by Using Hybrid Nanofluid Flow: Prandtl-Eyring Case

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