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Abstract

The idea of a Multilateral Investment Court seems to be one of the most prominent initiatives of the “multilateralization” of international investment law during this century. The creation of a new international, permanent court concentrated on settling investor – state disputes is an extraordinary challenge. Possible problems relate not only to the negotiations concerning the organizational and procedural aspects necessary to ensure the efficient operation of this type of body. It is also necessary to take into account the dynamics of the functioning of international adjudication as such, as well as the controversies surrounding the international legal protection of foreign investments.

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Authors and Affiliations

Łukasz Kaługa
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Abstract

In the present study, energy and exergy analysis has been evaluated for roughened solar air heater (SAH) using arc shaped wire ribs. To achieve this aim, two different types of flow arrangement have been considered. These arrangements are: apex upstream flow and apex downstream flo. In addition to this, a smooth duct SAH has been used for comparative study. The experiments were performed using the mass flow rate of 0.007– 0.022 kg/s on outdoor condition at Jamshedpur city of India. The absorber plate roughness geometry has been designed with relative roughness height 0.0395, rib size 2.5 mm, relative roughness pitch 10 and arc angle 60 . The energetic and exergetic performances have been examined on the basis of the first and second law of thermodynamics. According to the results, there is observed to be the maximum thermal efficiency and exergy efficiency as 73.2% and 2.64%, respectively, for apex upstream flow SAH at 0.022 kg/s, while, at same mass flow rate the maximum thermal efficiency and exergy efficiency is obtained as 69.4% and 1.89%, respectively, for apex downstream flow SAH. In addition to this, results reported that the maximum outlet temperature and temperature difference observed at lower mass flow rate. Also examined the outlet air temperature of SAH with various mass flow rates is very important for both analysis.
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Bibliography

[1] Duffie J.A., Beckman W.A.: Solar Engineering of Thermal Processes (3rd Edn.). Wiley, New York 2006.
[2] Garg H.P., Prakash J.: Solar Energy Fundamentals and Applications. Tata Mc- Graw Hill, New Delhi 2006.
[3] Ghritlahre H.K.: Performance Evaluation of solar air heating systems using artificial neural network. PhD thesis, National Institute of Technology, Jamshedpur 2019.
[4] Ghritlahre H.K., Chandrakar P., Ahmad A.: A comprehensive review on performance prediction of solar air heaters using artificial neural network. Ann. Data Sci. 8(2019), 405–449).
[5] Prakash C., Saini R.P.: Use of artificial roughness for performance enhancement of solar air heaters – a review. Int. J. Green Energy 16(2019), 7, 551–572.
[6] Ghritlahre H.K., Sahu P.K., Chand S.: Thermal performance and heat transfer analysis of arc shaped roughened solar air heater – An experimental study. Sol. Energy 199(2020), 173–182.
[7] Ghritlahre HK, Prasad RK.: Exergetic performance prediction of a roughened solar air heater using artificial neural network. Strojniški vestnik/J. Mech. Eng. 64(2018), 3, 195–206.
[8] Ghritlahre H.K., Prasad R.K.: Exergetic performance prediction of solar air heater using MLP, GRNN and RBF models of artificial neural network technique. J. Environ. Manage. 223(2018), 566–575.
[9] Ghritlahre H.K., Prasad R.K.: Prediction of exergetic efficiency of artificial arc shape roughened solar air heater using ANN model. Int. J. Heat Technol. 36(2018), 3, 1107–1115.
[10] Kurtbas I., Durmus A.: Efficiency and exergy analysis of a new solar air heater. Renew. Energ. 29(2004), 9, 1489–1501.
[11] Kurtbas I, Turgut E.: Experimental investigation of solar air heater with free and fixed fins: Efficiency and exergy loss. Int. J. Sci. Technol. 1(2006), 1, 75–82.
[12] Karsli S.: Performance analysis of new-design solar air collectors for drying applications. Renew. Energ. 32(2007), 10, 1645–1660.
[13] Esen H.: Experimental energy and exergy analysis of a double-flow solar air heater having different obstacles on absorber plates. Build. Environ. 43(2008), 6, 1046–1054.
[14] Gupta M.K., Kaushik S.C.: Exergetic performance evaluation and parametric studies of solar air heater. Energy 33(2008), 11, 1691–1702.
[15] Gupta M.K., Kaushik S.C.: Performance evaluation of solar air heater for various artificial roughness geometries based on energy, effective and exergy efficiencies. Renew. Energ. 34(2009), 3, 465–476.
[16] Akpinar E.K., Koçyigit F.: Energy and exergy analysis of a new flat-plate solar air heater having different obstacles on absorber plates. Appl. Energ. 87(2010), 11, 3438–3450.
[17] Alta D., Bilgili E., Ertekin C., Yaldiz O.: Experimental investigation of three different solar air heaters: energy and exergy analyses. Appl. Energ. 87(2010), 10, 2953–2973.
[18] Bouadila S., Kooli S., Lazaar M., Skouri S., Farhat A.: Performance of a new solar air heater with packed-bed latent storage energy for nocturnal use. Appl. Energ. 110(2013), 267–275.
[19] Benli H.: Experimentally derived efficiency and exergy analysis of a new solar air heater having different surface shapes. Renew. Energ. 50(2013), 58–67.
[20] Bayrak F., Oztop H.F., Hepbasli A.: Energy and exergy analyses of porous baffles inserted solar air heaters for building applications. Energ. Buildings 57(2013), 338–345.
[21] Velmurugana P., Kalaivanan R.: Energy and exergy analysis of multi-pass flat plate solar air heater – An analytical approach. Int. J. Green Energy 12(2015), 8, 810–820.
[22] Acır A., Ata I., Sahin I.: Energy and exergy analyses of a new solar air heater with circular-type turbulators having different relief angles. Int. J. Exergy 20(2016), 1, 85–104.
[23] Ghritlahre H.K., Prasad R.K.: Energetic and exergetic performance prediction of roughened solar air heater using artificial neural network. Cienc. Tec. Vitivinic. 32(2017), 11, 2–24
[24] Abuska M.: Energy and exergy analysis of solar air heater having new design absorber plate with conical surface. Appl. Therm. Eng. 131(2018), 115–124.
[25] Matheswaran M.M., Arjunan T.V., Somasundaram D.: Analytical investigation of solar air heater with jet impingement using energy and exergy analysis. Sol. Energy 161(2018), 25–37.
[26] Aktas M. Sevik S., Dolgun E.C., Demirci B.: Drying of grape pomace with a double pass solar collector. Dry. Technol. 37(2019), 1, 105–117.
[27] Aktas M., Sözen A., Tuncer A.D., Arslan E., Kosan M., Çürük O.: Energyexergy analysis of a novel multi-pass solar air collector with perforated fins. Int. J. Renew. Energ. Dev. 8(2019), 1, 47–55.
[28] Kumar A., Layek A.: Energetic and exergetic performance evaluation of solar air heater with twisted rib roughness on absorber plate. J. Clean. Prod. 232(2019), 617– 628.
[29] Ural T.: Experimental performance assessment of a new flat-plate solar air collector having textile fabric as absorber using energy and exergy analyses. Energy 188(2019), 116116.
[30] Abdelkader T.K., Zhang Y., Gaballah E.S., Wang S., Wan Q., Fan Q.: Energy and exergy analysis of a flat-plate solar air heater coated with carbon nanotubes and cupric oxide nanoparticles embedded in black paint. J. Clean. Prod. 250(2020), 19501.
[31] Dheep G.R., Sreekumar A.: Experimental studies on energy and exergy analysis of a single pass parallel flow solar air heater. J. Sol. Energy Eng. 142(2020), 1, 011003 SOL-19-1038 .
[32] Debnath S., Das B., Randive P.: Energy and exergy analysis of plain and corrugated solar air collector: effect of seasonal variation. Int. J. Amb. Energ. (2020), doi: 10.1080/01430750.2020.1778081.
[33] Ghritlahre H.K„ Chandrakar P., Ahmad A.: Application of ANN model to predict the performance of solar air heater using relevant input parameters. Sustain. Energ. Technol. Asses. 40(2020), 100764.
[34] Ghritlahre H.K.: Heat transfer and friction factor characteristics investigation of roughened solar air heater using arc shaped wire rib roughness. Int. J. Amb. Energ. (2021), doi: 10.1080/01430750.2021.1934115.
[35] Ghritlahre H.K., Verma M.: Accurate prediction of exergetic efficiency of solar air heaters using various predicting methods. J. Clean. Prod. 288(2021), 125115.
[36] Kline S.J„ McClintock F.A.: Describe uncertainties in single sample experiments. Mech. Eng. 75(1953), 1, 3–8.
[37] Holman J.P.: Experimental Methods for Engineers. McGraw-Hill, New York 2007.
[38] Petela R.: An approach to the exergy analysis of photosynthesis. Sol. Energy, 82(2008), 4, 311–328.
[39] Ghritlahre H.K., Sahu P.K.: A comprehensive review on energy and exergy analysis of solar air heaters. Arch. Thermodyn. 41(2020), 3, 183–222.
[40] Ghritlahre H.K„ Chandrakar P., Ahmad A.: Solar air heater performance prediction using artificial neural network technique with relevant input variables. Arch. Thermodyn. 41(2020), 3, 255–282.

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Authors and Affiliations

Harish Kumar Ghritlahre
1

  1. Department of Energy and Environmental Engineering, Chhattisgarh Swami Vivekanand Technical University, Bhilai, Chhattisgarh, 491107, India

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