Thermodynamic Analysis of Industrial Cooling Systems with the Usage of Different Types of Evaporators: Experimental Study

Year 2021, , 1145 - 1161, 01.12.2021

Süleyman Erten , Meltem Koşan , Furkan İşgen , Esra Demirci , Mustafa Aktaş

https://doi.org/10.35378/gujs.788864

Cited By: 3

Abstract

Energy efficiency and the amount of refrigerant in heat exchangers used in cooling systems has recently been an important research subject. In this study, in order to compare and analyze different types of evaporators, industrial refrigerators were designed and in this context, test setups in accordance with TS EN ISO 23953-2 standard were produced. R290 (propane) was used as the refrigerant in the designed system. During the experiment, temperature-pressure measurements were taken at a certain point in the cooling system equipment of the products, which were cooled every minute, and test data were recorded. As a result of the data obtained from the experimental results, while the temperature difference of the air entering and leaving the evaporators was 6.797 ℃ in the first system using ½” tube diameter evaporator, it was calculated as 7.052 ℃ in the corrugated and hydrophilic coated second system using 3/8” tube diameter. In the experimental setups, the energy consumed in the first and second systems and the masses of R-290 refrigerant were measured as 24.64 kWh, 23.39 kWh and 700 grams, 430 grams, respectively. Consequently, it was calculated that the second system was 5.073% and 38.57% more efficient in terms of energy efficiency and the refrigerant mass used. Coefficient of performance values for the first and second systems were found as 2.807 and 3.013, respectively.

Keywords

Cooling, Evaporator, Energy efficiency, Hydrophilic coating

References

• [1] Hoshino, K., Oota, Y., Hattori, N., Takemoto, M., Tanaka, T., “Developments and future trends, in: Aluminum Products with Improved Surface Functions”, Kobelco Technology, 26: 63-69, (2005).
• [2] Min, J., Webb, R., Bemisderfer, C., “Long-Term Hydraulic Performance of Dehumidifying Heat-Exchangers With and Without Hydrophilic Coatings”, HVAC&R Research, 6(3): 257-272, (2000).
• [3] Min, J., Wu, X., Shen, L., Gao, F., ‘‘ Hydrophilic treatment and performance evaluation of copper finned tube evaporators’’, Applied Thermal Engineering, 31(14-15): 2936–2942, (2011).
• [4] Moallem, E., Hong, T., Cremaschı, L., Fısher, D.E., ‘‘ Effects of surface coating and water retention on frost formation in microchannel evaporators (ASHRAE RP-1589)”, HVAC&R Research, 19: 347–362, (2014).
• [5] Kılınç, F., Buyruk, E., Karabulut, K., “Experimental investigation of cooling performance with graphene-based nano fluids in a vehicle radiator”, Heat and Mass Transfer, 56(2): 521–530, (2020).
• [6] Karabulut, K., Buyruk, E., Kılınç, F., “Experimental and numerical investigation of convection heat transfer in a circular copper tube using graphene oxide nanofluid”, Journal of the Brazilian Society of Mechanical Sciences and Engineering, 42: 230, (2020).
• [7] Türkan, B., Çağlayan, A., Onbaşıoğlu, H., “Investigation of the Effect of Pipe Properties on the Thermal Performance of Finned Tube Evaporators using CO2 Refrigerant’’, 3rd national plumbing engineering congress, 19, 22 April, İzmir, (2017).
• [8] Shafaee, M., Mashouf, H., Sarmadian, A., Mohseni, S.G., “Evaporation heat transfer and pressure drop characteristics of R-600a in horizontal smooth and helically dimpled tubes”, Applied Thermal Engineering, 107: 28–36, (2016).
• [9] Lillo, G., Mastrullo, R., Mauro, A. W., Viscito, L., “Flow boiling of R32 in a horizontal stainless steel tube with 6.00 mm ID. Experiments, assessment of correlations and comparison with refrigerant R410A”, International Journal of Refrigeration, 97: 143–156, (2019).
• [10] Chen, J., Li, W., “Local flow boiling heat transfer characteristics in three-dimensional enhanced tubes”, International Journal of Heat and Mass Transfer, 121: 1021–1032, (2018).
• [11] He, G., Liu, F., Cai, D., Jiang, J., “Experimental investigation on flow boiling heat transfer performance of a new near azeotropic refrigerant mixture R290/R32 in horizontal tubes”, International Journal of Heat and Mass Transfer, 102: 561-573, (2016).
• [12] Guo, S., Wu, Z., Li, W., Kukulka, D., Sundén, B., Zho, X., Simon, T., “Condensation and evaporation heat transfer characteristics in horizontal smooth, herringbone and enhanced surface EHT tubes”, International Journal of Heat and Mass Transfer, 85: 281–291, (2015).
• [13] Nascimento, C.R, Mariani, V.C., Coelho, L.S., “Experimental analysis of R410A flow in helically rib-roughened tubes”, Thermal Science and Engineering Progress, 20: 100668, (2020).
• [14] Karabulut, K., Buyruk, E., Kılınç, F., Karabulut, Ö.O., “Farklı Geometrilerden Oluşan Kanatçıklı Plakalı Isı Değiştiricileri için Isı Transferinin Üç Boyutlu Sayısal Olarak İncelenmesi”, Tesisat Mühendisliği, 137: 35-48, (2013).
• [15] Naik, H., Tiwari, S., “Thermodynamic performance analysis of an inline fin-tube heat exchanger in presence of rectangular winglet pairs”, International Journal of Mechanical Sciences, 193: 106148, (2021).
• [16] Bahmanabadi, A., Faegh, M., Shafi, M.B., “Experimental examination of utilizing novel radially grooved surfaces in the evaporator of a thermosyphon heat pipe”, Applied Thermal Engineering, 169: 114975, (2020).
• [17] Celik, S., Nsofor, E.C., “Performance analysis of a refrigerating system with a grooved-tubeevaporator”, Applied Thermal Engineering 73: 745-750, (2014).
• [18] Koşan, M., Demirtaş, M., Aktaş, M., Dişli, E., “Performance analyses of sustainable PV/T assisted heat pump drying system”, Solar Energy, 199: 657-672, (2020).
• [19] Caner, M., Duman, N., Buyruk, E., Kılınç, F., “Performance Analysis of Horizontal Ground Source Heat Pump System in Sıvas”, Journal of Science and Technology of Dumlupinar University, 42: 47-53, (2019).
• [20] Aktaş, M., Koşan, M., Arslan, E., Tuncer, A.D., “Designing a novel solar-assisted heat pump system with modification of a thermal energy storage unit”, Proc IMechE Part A: J Power and Energy 233(5): 588-603, (2019).
• [21] Honda, H., Wang, Y., “Theoretical study of evaporation heat transfer in horizontal microfin tubes: stratified flow model”, International Journal of Heat and Mass Transfer, 47(17-18): 3971–3983, (2004).
• [22] Li, S., Liu, M., Hanaor, D., Gan, Y., “Dynamics of Viscous Entrapped Saturated Zones in Partially Wetted Porous Media”, Transport in Porous Media, 125: 193-210, (2018).
• [23] Mahmoud, M.M., Karayiannis, T.G., “Heat transfer correlation for flow boiling in small to micro tubes”, International Journal of Heat and Mass Transfer, 66: 553–574, (2013).
• [24] Cavallini, A., Col, D., Doretti, L., Rossetto, L., Longo, G.A., “Refrigerant vaporization inside enhanced tubes: a heat transfer model”, Heat and Technology, 17(2): 222-231, (1999).
• [25] Zhang, X., Yuan, X., “Heat transfer correlations for evaporation of refrigerant mixtures flowing inside horizontal microfin tubes”. Energy Conversion and Management, 49(11): 3198–3204, (2008).
• [26] Üreden, A., Özden, S., “How to Calculate Corporate Carbon Footprint: A Theoretical Study”, Anatolian Journal of Forest Research, 4(2): 98-108, (2018).
• [27] Gibbons, M.J., Di Marco, P., Robinson, A.J., “Heat flux distribution beneath evaporating hydrophilic and superhydrophobic droplets”, International Journal of Heat and Mass Transfer, 148: 119093, (2020).
• [28] Kim, Y., Kim, J.S, Shin, D.H., Yo,u S.M., Lee, J., “Enhanced thermal performance of a thermosyphon for waste heat recovery: microporous coating at evaporator and hydrophobic coating at condenser”, Applied Thermal Engineering, 175: 115332, (2020).
• [29] Rossetto, L., Diani, A., “R513A flow boiling heat transfer inside horizontal smooth tube and microfin tube”, International Journal of Refrigeration, 107: 301-314, (2019).
• [30] Diani, A., Campanale, M., Rossetto, L., “Experimental study on heat transfer condensation of R1234ze(E) and R134a inside a 4.0 mm OD horizontal microfin tube”, International Journal of Heat and Mass Transfer, 126: 1316–1325, (2018).
• [31] Çoban, M.T., Turgut, O.E., “Modeling and comparison of two-phase flow boiling heat transfer equations for various refrigerants”, X. Ulusal Tesisat Mühendisliği Kongresi, İzmir, 1001-1022, (2011).