OPEN ACCESS
Spray technology has numerous applications in general and cooling microchannels in particular. But before that study of the controlling parameters on which spray performance depends need to be explored. Present work describes an experimental study on microchannel cooling with jet and spray at different pressure combinations of air and water. The experimental facility was developed at the School of Mechanical Engineering, KIIT, deemed to be University, Bhubaneswar, to investigate the effect of various controlling parameters like fluid pressure, flow rate, nozzle to surface distance and heat input on jet and spray cooling of microchannels. The input parameters like air pressure and water pressure along with nozzle to surface distance were optimized. The input parametrs such as air and water pressure in the range of 1 bar to 3 bar, nozzle tip to surface distance in the range of 10 to 20 mm were considered during the tests. As a result, at 1 bar air pressure, 3 bar water pressure and 17.42 mm nozzle tip to surface distance, the maximum heat transfer coefficient was achieved as predicted optimal solution through response surface methodology (RSM). The data were compared with that of the earlier researcher’s experimental work. The experimental results revealed that the employment of spray impingement cooling technique on microchannels provided significant improvement in removal of heat flux with less consumption of coolant.
heat transfer, microchannel cooling, optimization, response surface method, spray impingement
[1] Chakraborty M, Anand R, Rao PS, Sen S, DasGupta S. (2017). Oscillating nanofluid droplet for micro-cooling. Sensors Actuators B Chem 239: 562–570. https://doi.org/10.1016/j.snb.2016.06.145
[2] Modak M, Chougule SS., Sahu SK. (2017). An experimental investigation on heat transfer characteristics of hot surface by using CuO–Water nanofluids in circular jet impingement cooling. Journal of Heat Transfer 140(1): 012401. https://doi.org/10.1115/1.4037396
[3] Visaria M, Mudawar I. (2008a). Theoretical and experimental study of the effects of spray inclination on two-phase spray cooling and critical heat flux. International Journal of Heat and Mass Transfer 51(9): 2398–2410. https://doi.org/10.1016/j.ijheatmasstransfer.2007.08.010
[4] Visaria M, Mudawar I. (2008b). Effects of high subcooling on two-phase spray cooling and critical heat flux. International Journal of Heat and Mass Transfer 51(21): 5269–5278. https://doi.org/10.1016/j.ijheatmasstransfer.2008.02.045
[5] Tilton CL, Tilton DE. (2005). Etched open microchannel spray cooling. U.S. Patent 6(952): 346.
[6] Kandlikar SG, Bapat AV. (2007). Evaluation of jet impingement, spray and microchannel chip cooling options for high heat flux removal. Heat Transfer Engineering 28(11): 911–923. https://doi.org/10.1080/01457630701421703
[7] Toda S. (1972). A study of mist cooling (1st Report- Investigation of mist cooling). Heat Transfer-Japanese Research 1: 39-50.
[8] Holman JP, Kendall CM. (1993). Extended studies of spray cooling with Freon-113. International Journal of Heat and Mass Transfer 36(8): 2239–2241. https://doi.org/10.1016/S0017-9310(05)80155-3
[9] Hall DD, Mudawar I. (1995). Experimental and numerical study of quenching complex-shaped metallic alloys with multiple, overlapping sprays. International Journal of Heat and Mass Transfer 38(7): 1201-1216. https://doi.org/10.1016/0017-9310(94)00244-P
[10] Rybicki JR, Mudawar I. (2006). Single-phase and two-phase cooling characteristics of upward-facing and downward-facing sprays. International Journal of Heat and Mass Transfer 29(1-2): 5-16. https://doi.org/10.1016/j.ijheatmasstransfer.2005.07.040
[11] Liang G, Mudawar I. (2017). Review of spray cooling – Part 1: Single-phase and nucleate boiling regimes, and critical heat flux. International Journal of Heat and Mass Transfer 115: 1174-1205. https://doi.org/10.1016/j.ijheatmasstransfer.2017.06.029
[12] Wang Y, Liu M, Liu D, Xu K, Chen Y. (2010). Experimental study on the effects of spray inclination on water spray cooling performance in non-boiling regime. Experimental Thermal and Fluid Science 34(7): 933-942. https://doi.org/10.1016/j.expthermflusci.2010.02.010
[13] Oliphant K, Webb BW, McQuay MQ. (1998). An experimental comparison of liquid jet array and spray impingement cooling in the non-boiling regime. Experimental Thermal and Fluid Science 18(1): 1-10. https://doi.org/10.1016/S0894-1777(98)10013-4
[14] Yan M, Lane M, Kannewurf CR, Chang RPH. (2001). Highly conductive epitaxial CdO thin films prepared by pulsed laser deposition. Appl. Phys. Lett 78(16): 2342. https://doi.org/10.1063/1.1365410
[15] Shedd TA. (2007). Next generation spray cooling: high heat flux management in compact spaces. Heat Transfer Engineering 28(2): 87-92. https://doi.org/10.1080/01457630601023245
[16] Hsieh SS, Hsu YF, Wang ML. (2014). A microspray-based cooling system for high powered LEDs. Energy Conversion and Management 78: 338-346. https://doi.org/10.1016/j.enconman.2013.10.066
[17] Deng W, Gomez A. (2011). Electrospray cooling for microelectronics. International Journal of Heat and Mass Transfer 54(11): 2270-2275. https://doi.org/10.1016/j.ijheatmasstransfer.2011.02.038
[18] Coursey JS, Kim J, Kiger KT. (2005). Spray cooling of small-pitched, straight-finned, copper heat sinks. International Mechanical Engineering Congress and Exposition 271-277. https://doi.org/10.1115/IMECE2005-81210
[19] Fabbri M, Dhir VK. (2005). Optimized heat transfer for high power electronic cooling using arrays of microjets. Journal of Heat Transfer 127(7): 760-769. https://doi.org/10.1115/1.1924624
[20] Labergue A, Gradeck M, Lemoine F. (2015). Comparative study of the cooling of a hot temperature surface using sprays and liquid jets. International Journal of Heat and Mass Transfer 81: 889-900. https://doi.org/10.1016/j.ijheatmasstransfer.2014.11.018
[21] Chow LC, Sehmbey MS, Pais MR. (1997). High heat flux spray cooling. Annual Review of Heat Transfer 8(8): 291. https://doi.org/10.1615/AnnualRevHeatTransfer.v8.80
[22] Cerruto E, Manetto G, Longo D, Failla S, Schillaci G. (2017). A laboratory system for nozzle spray analysis. Chemical Engineering Transactions 8: 751-756. https://doi.org/10.3303/CET1758126
[23] Wu J, Yan W, Liu M, Tian L, Zhang R. (2017). Numerical simulation of spray cooling gas with high temperature and velocity in compressor inter-stage. Chemical Engineering Transactions 61: 979-984. https://doi.org/10.3303/CET1761161
[24] Mohapatra SS, Ravikumar SV, Pal SK, Chakraborty S. (2013). Ultra fast cooling of a hot steel plate by using high mass flux air atomized spray. Steel Research International 84(3): pp. 229-236. https://doi.org/10.1002/srin.201200157
[25] Ravikumar SV, Jha JM, Tiara AM, Pal SK, Chakraborty S. (2014). Experimental investigation of air-atomized spray with aqueous polymer additive for high heat flux applications. International Journal of Heat and Mass Transfer 72: 362-377. https://doi.org/10.1016/j.ijheatmasstransfer.2014.01.024
[26] Hou Y, Tao Y, Huai X, Zou Y, Sun D. (2018). Numerical simulation of multi-nozzle spray cooling heat transfer. International Journal of Thermal Sciences 125: 81. https://doi.org/10.1016/j.ijthermalsci.2017.11.011
[27] Jung EY, Park CU, Lee DH, Kim KM, Cho HH. (2018). Effect of the injection angle on local heat transfer in a showerhead cooling with array impingement jets. International Journal of Thermal Sciences 124: 344. https://doi.org/10.1016/j.ijthermalsci.2017.10.033
[28] Abdalrahman KH, Specht E. (2014). Influence of salt mixture on the heat transfer during spray cooling of hot metals. International Journal of Heat and Mass Transfer 78: 76-83. https://doi.org/10.1016/j.ijheatmasstransfer.2014.06.070
[29] Aamir M, Qiang L, Xun Z, Wang H, Ullah R. (2016). Study on ultra-fast cooling behaviors of water spray cooled stainless steel plates. Experimental Heat Transfer 29(3): 299-321. https://doi.org/10.1080/08916152.2014.976722
[30] Hsieh SS, Luo SY. (2016). Droplet impact dynamics and transient heat transfer of a micro spray system for power electronics devices. International Journal of Heat and Mass Transfer 92: 190-205. https://doi.org/10.1016/j.ijheatmasstransfer.2015.08.099
[31] Yang J, Chow LC, Pais MR. (1996). Nucleate boiling heat transfer in spray cooling. Journal of Heat Transfer 118(3): 668-671. https://doi.org/10.1115/1.2822684
[32] Horacek B, Kim J, Kiger KT. (2004). Spray cooling using multiple nozzles: visualization and wall heat transfer measurements. IEEE Transactions on Device and Materials Reliability 4(4): 614-625. https://doi.org/10.1109/TDMR.2004.838399
[33] Horacek B, Kiger KT, Kim J. (2005). Single nozzle spray cooling heat transfer mechanisms. International Journal of Heat and Mass Transfer 48(8): 1425-1438. https://doi.org/10.1016/j.ijheatmasstransfer.2004.10.026
[34] Liao J, Dimopoulos Eggenschwiler P, Furrer R, Wang M, Boulouchos K. (2018). Heat transfer characteristics of urea-water spray impingement on hot surfaces. International Journal of Heat and Mass Transfer 117: 447. https://doi.org/10.1016/j.ijheatmasstransfer.2017.10.031.
[35] Chen RH, Chow LC, Navedo JE. (2004). Optimal spray characteristics in water spray cooling. International Journal of Heat and Mass Transfer 47(23): 5095-5099. https://doi.org/10.1016/j.ijheatmasstransfer.2004.05.033
[36] Mudawar I, Estes KA. (1996). Optimizing and predicting CHF in spray cooling of a square surface. Journal of Heat Transfer 118: 672-679. https://doi.org/10.1115/1.2822685
[37] Lam PAK, Prakash KA. (2017). Effect of magnetic field on natural convection and entropy generation in Al2O3/water nanofluid-filled enclosure with twin protruding heat sources. Journal of Thermal Science and Engineering Applications 9(2): 024502. https://doi.org/10.1115/1.4035810
[38] Prinn KB, Costantino HR, Tracy M. (2002). Statistical modeling of protein sprays drying at the lab scale. AapsPharmscitech 3(1): 32-39. https://doi.org/10.1208/pt030104.
[39] Nayak SK, Mishra PC, Parashar SKS. (2016). Enhancement of heat transfer by water_Al2O3 and water_TiO2 nanofluids jet impingement in cooling hot steel surface. Journal of Experimental Nanoscience 11(16): 1253-1273. https://doi.org/10.1080/17458080.2016.1209789
[40] Tay AA, Ang SS, Lwin LO. (2006). An experimental study of slot-jet impingement and mist cooling of microprocessors. Thermal and Thermomechanical Proceedings 10th Intersociety Conference on Phenomena in Electronics Systems. ITHERM, San Diego, CA, USA, pp. 175-180. https://doi.org/10.1109/ITHERM.2006.1645340
[41] Abernethy RB, Benedict RP, Dowdell RB. (1985). ASME measurement uncertainty, ASME J. Fluids Eng. 107: 161-164. https://doi.org/10.1115/1.3242450