Study of Twisted Tape Inserts Segmental Application in Low-Concentrated Solar Parabolic Trough Collectors

This article presents the results of an analysis of heat enhancement intensification using twisted tapes in linear absorbers for low-concentration parabolic trough collectors, a technology frequently considered as a supplementary energy source for industrial heat production. This contribution proposes a segmented application of different twisted tapes to intensify heat absorption. A 33.7 mm tubular absorber placed in the collector focal point with an aperture of 1.8 m was selected. The temperature range of the heat transfer fluid was chosen at 60–250 °C. The impact of inserts with twisted ratios of 1, 2 and 4 on system operation was analysed using the Ansys Fluent and mathematical model. The models used were validated based on experimental results from a parabolic trough collector with solar simulator test bench. The results indicated that for the range of mass flow between 0.15–0.3 kg/s, the most optimal is applying twisted ratio 1, except for the highest-temperature section. In this section, it is more optimal to use an insert with a twisted ratio 2, due to the lower need for pumping and the higher efficiency increment. The long-term analysis for the case study plant indicated that the proposed approach increased power gain by 0.27%.

[1]  Ł. Bartela.  An experimental study on parabolic trough collector in simulated conditions by metal-halide solar radiation simulator , 2023, Archives of Thermodynamics.

[2]  Wujun Wang,et al.  A potential solution in reducing the parabolic trough based solar industrial process heat system cost by partially replacing absorbers coatings with non-selective ones in initial loop sections , 2023, Applied Energy.

[3]  J. Llorens,et al.  Heat transfer in pipes with twisted tapes: CFD simulations and validation , 2022, Comput. Chem. Eng..

[4]  S. Rulik,et al.  Solar tracker error impact on linear absorbers efficiency in parabolic trough collector – Optical and thermodynamic study , 2022, Renewable Energy.

[5]  I. Jerman,et al.  Review of the spectrally selective (CSP) absorber coatings, suitable for use in SHIP , 2022, Solar Energy Materials and Solar Cells.

[6]  Hongguang Jin,et al.  A thermal efficiency-enhancing strategy of parabolic trough collector systems by cascadingly applying multiple solar selective-absorbing coatings , 2022, Applied Energy.

[7]  A. Presas,et al.  Failure investigation of a solar tracker due to wind-induced torsional galloping , 2022, Engineering Failure Analysis.

[8]  M. Tawfik,et al.  Heat transfer enhancement in parabolic trough receivers using inserts: A review , 2021, Sustainable Energy Technologies and Assessments.

[9]  Abdulwahab A. Alnaqi,et al.  Hydrothermal effects of using two twisted tape inserts in a parabolic trough solar collector filled with MgO-MWCNT/thermal oil hybrid nanofluid , 2021 .

[10]  M. Matheswaran,et al.  Influence of twisted tape inserts on energy and exergy performance of an evacuated Tube-based solar air collector , 2021 .

[11]  S. Saedodin,et al.  Thermal Performance Enhancement Using Absorber Tube with Inner Helical Axial Fins in a Parabolic Trough Solar Collector , 2021, Applied Sciences.

[12]  Jyeshtharaj B. Joshi,et al.  Chronological development of innovations in reflector systems of parabolic trough solar collector (PTC) - A review , 2021, Renewable and Sustainable Energy Reviews.

[13]  Werner Weiss,et al.  Solar Heat Worldwide 2021 , 2021 .

[14]  Ł. Bartela,et al.  A solar simulator numerical modeling for heat absorption phenomenon research in a parabolic trough collector , 2021, International Journal of Energy Research.

[15]  Björn Laumert,et al.  Numerical analysis on the optical geometrical optimization for an axial type impinging solar receiver , 2020 .

[16]  C. Park,et al.  Validation of the Gnielinski correlation for evaluation of heat transfer coefficient of enhanced tubes by non-linear regression model: An experimental study of absorption refrigeration system , 2020 .

[17]  Xiao-Li Qiu,et al.  A novel TiC-TiN based spectrally selective absorbing coating: Structure, optical properties and thermal stability , 2020 .

[18]  A. Cebula,et al.  Mathematical Model of a Sun-Tracked Parabolic Trough Collector and Its Verification , 2020, Energies.

[19]  Y. Mor-Yossef.  A stable, positivity-preserving scheme for cross-diffusion source term in RANS turbulence models: Application to k-ω turbulence models , 2019, Computers & Fluids.

[20]  M. Hasanuzzaman,et al.  Global advancement of solar thermal energy technologies for industrial process heat and its future prospects: A review , 2019, Energy Conversion and Management.

[21]  V. Vuorinen,et al.  Wall-distance-free formulation for SSTk-ωmodel , 2019, European Journal of Mechanics - B/Fluids.

[22]  Guoqiang Xu,et al.  A modified anisotropic k-ω model for predicting flow and heat transfer in a rotating channel , 2018 .

[23]  Evangelos Bellos,et al.  Enhancing the Performance of Evacuated and Non-Evacuated Parabolic Trough Collectors Using Twisted Tape Inserts, Perforated Plate Inserts and Internally Finned Absorber , 2018 .

[24]  E. Bellos,et al.  Thermal enhancement of parabolic trough collector with internally finned absorbers , 2017 .

[25]  Björn Laumert,et al.  Development of a Fresnel lens based high-flux solar simulator , 2017 .

[26]  Galen Maclaurin,et al.  The National Solar Radiation Data Base (NSRDB) , 2017, Renewable and Sustainable Energy Reviews.

[27]  Guoqiang Xu,et al.  Optical sensitivity analysis of geometrical deformation on the parabolic trough solar collector with Monte Carlo Ray-Trace method , 2016 .

[28]  Varun,et al.  Heat transfer augmentation using twisted tape inserts: A review , 2016 .

[29]  O. A. Jaramillo,et al.  Parabolic trough solar collector for low enthalpy processes: An analysis of the efficiency enhancement by using twisted tape inserts , 2016 .

[30]  Gary Rosengarten,et al.  Improving the concentration ratio of parabolic troughs using a second-stage flat mirror , 2015 .

[31]  Mehmet Sait Söylemez,et al.  Thermo-mathematical modeling of parabolic trough collector , 2014 .

[32]  Aldo Steinfeld,et al.  Potential improvements in the optical and thermal efficiencies of parabolic trough concentrators , 2014 .

[33]  M. Farhadi,et al.  A review study on twisted tape inserts on turbulent flow heat exchangers: The overall enhancement ratio criteria , 2014 .

[34]  Yang Xu,et al.  Comparative and sensitive analysis for parabolic trough solar collectors with a detailed Monte Carlo ray-tracing optical model , 2014 .

[35]  A. R. Mahoney,et al.  Characterization of Pyromark 2500 Paint for High-Temperature Solar Receivers , 2014 .

[36]  Md. Tariqul Islam,et al.  Heat transfer and friction factor characteristics in turbulent flow through a tube fitted with perforated twisted tape inserts , 2013 .

[37]  S. Kalogirou.  A detailed thermal model of a parabolic trough collector receiver , 2012 .

[38]  Yonghui Xie,et al.  Effects of near-wall grid spacing on SST-K-ω model using NREL Phase VI horizontal axis wind turbine , 2012 .

[39]  S. Eiamsa-ard,et al.  Thermohydraulics of turbulent flow through a round tube by a peripherally-cut twisted tape with an alternate axis , 2010 .

[40]  Jerome Spanier,et al.  Efficient, automated Monte Carlo methods for radiation transport , 2008, J. Comput. Phys..

[41]  P. Promvonge.  Thermal augmentation in circular tube with twisted tape and wire coil turbulators , 2008 .

[42]  F. Menter.  Two-equation eddy-viscosity turbulence models for engineering applications , 1994 .

[43]  Josua P. Meyer,et al.  Heat transfer and entropy generation in a parabolic trough receiver with wall-detached twisted tape inserts , 2016 .

[44]  Julián Blanco,et al.  Performance of a 5 kWe Solar-only Organic Rankine Unit Coupled to a Reverse Osmosis Plant☆ , 2014 .

[45]  S. Eiamsa-ard,et al.  Thermal characteristics in a heat exchanger tube fitted with dual twisted tape elements in tandem , 2010 .