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Energies 2022, 15, 1316 21 of 22 Appendix A Table A1 shows the measurement uncertainties of the different test rigs. Table A1. Measurement uncertainties. Rig MICRO LINI TRINI References Set Series 87 μm Regular 87 μm sandTES 210 μm Regular 210 μm sandTES Plain Finned Plain Without Plain With Finned 9/2 Finned 9/1 Finned 6/1 FG Alpha_Gross Alpha_Net Min Mean 12.03 16.41 11.81 15.15 22.64 35.85 19.60 34.90 3.84 5.33 3.36 4.30 7.36 12.19 5.69 11.51 9.79 12.47 8.58 15.54 10.49 16.22 Min Mean 1.63 2.26 1.63 2.57 1.37 1.43 1.37 1.43 1.13 1.24 1.13 1.25 16.15 29.97 16.15 30.61 16.65 29.44 17.54 27.56 16.76 26.75 Max Min Mean Max 3.73 5.72 6.24 6.82 3.73 5.67 6.12 6.67 1.64 5.85 6.37 6.98 1.64 5.84 6.38 6.94 1.61 3.24 3.79 4.78 1.61 3.08 3.42 4.16 58.21 3.22 3.70 6.25 58.21 3.03 3.49 6.25 44.76 4.81 5.45 6.19 42.37 5.19 6.09 7.46 39.46 6.84 8.28 11.97 Max 21.72 20.54 50.66 57.27 7.95 6.35 16.98 17.52 17.66 26.08 20.37 All values are in percent of the respective measured value. They can refer to both posi- tive and negative deviations. All measurement uncertainties are additionally documented in the form of graphs in the data repository. 1. Chen, J.C. Heat Transfer. In Handbook of Fluidization and Fluid-Particle Systems, 1st ed.; Yang, W.-C., Ed.; CRC Press: Boca Raton, FL, USA, 2003; pp. 257–286. [CrossRef] 2. Andeen, B.R.; Glicksman, L.R. Heat transfer to horizontal tubes in shallow fluidized beds. In Proceedings of the ASME-AIChE Heat Transfer Conference, St. Louis, MO, USA, 9–11 August 1976; Paper 76-HT-67. American Institute of Chemical Engineers: New York, NY, USA, 1976. 3. Bansal, R.K. Heat Transfer Studies from Single Cylinder and Tube Bundle in Fluidized Bed. Ph.D. Thesis, Georgia Institute of Technology, Atlanta, GA, USA, 1978. 4. Grewal, N.S. A generalized correlation for heat transfer between a gas—Solid fluidized bed of small particles and an immersed staggered array of horizontal tubes. Powder Technol. 1981, 30, 145–154. [CrossRef] 5. Molerus, O.; Burschka, A.; Dietz, S. Particle migration at solid surfaces and heat transfer in bubbling fluidized beds—II. Prediction of heat transfer in bubbling fluidized beds. Chem. Eng. Sci. 1995, 50, 879–885. [CrossRef] 6. Mickley, H.S.; Fairbanks, D.F. Mechanism of heat transfer to fluidized beds. AIChE J. 1955, 1, 374–384. [CrossRef] 7. Martin, H. Heat Transfer in Fluidized Beds. In VDI Heat Atlas, 2nd ed.; Stephan, P., Kabelac, S., Kind, M., Martin, H., Mewes, D., Schaber, K., Eds.; Springer: Berlin/Heidelberg, Germany, 2010; pp. 1301–1310. [CrossRef] 8. Kunii, D.; Levenspiel, O. Fluidization and Mapping of Regimes. In Fluidization Engineering, 2nd ed.; Kunii, D., Levenspiel, O., Eds.; Butterworth-Heinemann: Boston, MA, USA, 1991; pp. 61–94. [CrossRef] 9. Natale, F.D.; Bareschino, P. Heat transfer and void fraction profiles around a horizontal cylinder immersed in a bubbling fluidised bed. Int. J. Heat Mass Transf. 2010, 53, 3525–3532. [CrossRef] 10. Kim, S.W.; Ahn, J.Y. Heat transfer and bubble characteristics in a fluidized bed with immersed horizontal tube bundle. Int. J. Heat Mass Transf. 2003, 46, 399–409. [CrossRef] 11. Pisters, K.; Prakash, A. Investigations of axial and radial variations of heat transfer coefficient in bubbling fluidized bed with fast response probe. Powder Technol. 2011, 207, 224–231. [CrossRef] 12. Schwaiger, K.B. Development of a Novel Particle Reactor/Heat-Exchanger Technology for Thermal Energy Storages. Ph.D. Thesis, TU Wien, Vienna, Austria, 2017. 13. Hämmerle, M. Auslegung und Konstruktion einer 200[kW]th-sandTES Pilotanlage. Master’s Thesis, TU Wien, Vienna, Austria, 2013. 14. Steiner, P.; Schwaiger, K.; Walter, H.; Haider, M. Active Fluidized Bed Technology used for Thermal Energy Storage. In Proceedings of the ASME 2016 10th International Conference on Energy Sustainability, Charlotte, NC, USA, 26–30 June 2016. [CrossRef] 15. Kong, W.; Wang, B.; Baeyens, J.; Li, S.; Ke, H.; Tan, T.; Zhang, H. Solids mixing in a shallow cross-flow bubbling fluidized bed. Chem. Eng. Sci. 2018, 187, 213–222. [CrossRef] 16. Pécora, A.A.B.; Parise, M.R. Heat transfer coefficient in a shallow fluidized bed heat exchanger with a continuous flow of solid particles. J. Braz. Soc. Mech. Sci. 2006, 28, 253–258. [CrossRef]PDF Image | Heat Transfer between Finned Tubes
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