Energy harvesting using solar ORC system and Archimedes Screw Turbine (AST) combination with different refrigerant working fluids

Shahverdi, Kazem; Loni, Reyhaneh; Ghobadian, Barat; Monem, M J; Gohari, Alireza; Marofi, Safar; Najafi, Gholamhassan

doi:10.1016/j.enconman.2019.01.057

Cited by 54 publications

(31 citation statements)

References 35 publications

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“…The parabolic trough solar collector (PTC) is one of the most mature solar concentrating technologies [1] which can be used in numerous applications such as electricity production [2], industrial heat [3], refrigeration [4], space-heating [5], chemical processes [6] and polygeneration [7]. This collector is a linear concentrating technology that operates with a single-axis tracking system in the majority of the cases.…”

Section: Introductionmentioning

confidence: 99%

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Polynomial Expressions for the Thermal Efficiency of the Parabolic Trough Solar Collector

Bellos

Tzivanidis

2020

Applied Sciences

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The parabolic trough solar collector (PTC) is the most mature solar concentrating technology, and this technology is applied in numerous thermal applications. Usually, the thermal efficiency of the PTC is expressed with the aid of polynomial expressions. However, there is not a universal expression that is applied in all cases with high accuracy. Many studies use expressions with the first-degree polynomial, second-degree, or fourth-degree polynomial expressions. In this direction, this work is a study that investigates different expressions about the thermal efficiency of a PTC with a systematic approach. The LS-2 PTC module is examined with a developed numerical model in the Engineering Equation Solver for different operating temperatures and solar beam irradiation levels. This model is validated using experimental literature data. The found data are approximated with various polynomial expressions with up to six unknown parameters in every case. In every case, the mean absolute percentage error and the R2 are calculated. According to the final results, the use of the third power term leads to the best fitting results, as well as the use of the temperature difference term (ΔΤ), something that is new according to the existing literature. More specifically, the final suggested formula has the following format: “ηcol = a0 + a3∙ΔT3/Gb + b∙ΔΤ”. The results of this work can be used by the scientists for the optimum fitting of the PTC efficiency curves and for applying the best formulas in performance determination studies.

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Section: Introductionmentioning

confidence: 99%

“…Kutscher et al [19] used a third-degree polynomial in order to approximate the PTC thermal efficiency and they found high values for the R 2 . More specifically, they tested the SkyTrough module with a Schott PTR-80 receiver.…”

Section: Introductionmentioning

confidence: 99%

Polynomial Expressions for the Thermal Efficiency of the Parabolic Trough Solar Collector

Bellos

Tzivanidis

2020

Applied Sciences

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“…Burgeoning researches of ORC focus on varies working types of expanders e.g. radial turbine [18], scroll expander [19], screw expander [20] and free piston expander [21] applied for the different heat sources e.g. solar, geothermal and other industrial waste heat.…”

Section: Introductionmentioning

confidence: 99%

Techno-economic analysis on a small-scale organic Rankine cycle with improved thermal driven pump

Jiang

Wang

Roskilly

2020

Energy Conversion and Management

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Thermal driven pump is usually defined as a thermodynamic way which plays a similar role to replace common electricity driven pump. In this paper, a concept of improved thermal driven pump series is introduced to small-scale organic Rankine cycle and the up-limit thermal efficiency is explored by using discrete dividing method. Results indicate that power outputs of organic Rankine cycle by using thermal driven pump V2 range from 158.8 W to 343.1 W which are improved by up to 73.5% when compared with that using previous type V1. Energy and exergy efficiencies using improved type V2 and V3 increase from 0.018 to 0.043 and from 0.145 to 0.246, respectively. The largest increment could reach 40.5% and the highest value could account for 85% of the up-limit performance.Influencing factors i.e. mass ratio and pump efficiency are defined to further evaluate the performance in the possible applications. One remarkable inspiration is that organic Rankine cycle by using improved thermal driven pump may be an alternative solution to conventional type which could achieve the better techno-economic performance only under the conditions of dividing number smaller than 4 and the scale less than 10 kW.

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“…RCC-HP can convert lowtemperature energy to high-temperature energy for heating via the input of a small amount of electricity. K. Shahverdia et al 18 developed an energy harvesting system for power generation using a combination of an Archimedes screw turbine and a solar ORC system. [10][11][12][13][14] Recently, the utilization of solar energy can be found in substantial ORC-PG and RCC-HP systems based on solar energy.…”

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confidence: 99%

“…Irene G et al 17 technically and economically evaluated the integration of solar thermal and ORC to meet a significant amount of the energy consumption of a standard house. K. Shahverdia et al 18 developed an energy harvesting system for power generation using a combination of an Archimedes screw turbine and a solar ORC system. They investigated different ORC working fluids in the solar ORC system, such as R134a, R245ca, R245fa, R152a, R113, R11, and R114b, and indicated that R113 had the highest power output, thermal efficiency, and total efficiency.…”

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confidence: 99%

Performance investigation of the heat pump and power generation integration system

Zhang

Deng

2019

Int J Energy Res

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Summary A novel heat pump and power generation integration system (HPPGIS) using solar energy as a low temperature heat source was presented in this study. This system could be operated in both an organic Rankine cycle power generation (ORC‐PG) mode and a reverse Carnot cycle heat pump (RCC‐HP) mode. Compared with a single heat pump and power generation system, this system improved the utilization efficiency of solar energy, thus showing potential for the generation of economic benefits. Contrastive analyses of different working fluids using ORC‐PG and RCC‐HP systems were conducted first, leading to the selection of R142b and R245fa as optimal fluids. Then, an experimental investigation of the system was carried out under different conditions. A heat pump and ORC system model was proposed and validated by comparing experimental and simulated values. The experimental results indicated that the HPPGIS had good feasibility and stability in both modes. In the ORC‐PG mode, HPPGIS had a power output of 1.29 kW and a thermal efficiency of 4.71% when the water inlet temperature of the evaporator was 90.03°C. In the RCC‐HP mode, HPPGIS had a COP of 3.16 and a heat capacity of 33.24 kW when the water outlet temperature of the condenser was 106.23°C.

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Energy harvesting using solar ORC system and Archimedes Screw Turbine (AST) combination with different refrigerant working fluids

Cited by 54 publications

References 35 publications

Polynomial Expressions for the Thermal Efficiency of the Parabolic Trough Solar Collector

Polynomial Expressions for the Thermal Efficiency of the Parabolic Trough Solar Collector

Techno-economic analysis on a small-scale organic Rankine cycle with improved thermal driven pump

Performance investigation of the heat pump and power generation integration system

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