DESIGN, DEVELOPMENT AND FABRICATION OF A MIST SPRAY DIRECT EVAPORATIVE COOLING SYSTEM AND ITS PERFORMANCE EVALUATION

In today's essential commodities, air conditioning system is one of the major energy consuming elements. Nowadays evaporative cooling systems are mostly preferred as an alternative to compressor-based air conditioned systems. It is reported that evaporative cooling systems consume 60 - 70 % less energy compared to compressor-based air conditioning systems. In this paper, performance analysis of a mist evaporative cooler is carried out experimentally. The performance parameters such as, drop in temperature, cooling capacity, saturation efficiency, the coefficient of performance are evaluated with respect to various ambient conditions and with a varied mass flow rate of air. Experimental data used to develop an empirical correlation to predict the temperature of cooled air by linear regression analysis. Predicted temperature of cooled air temperature by empirical correlation is validated through experimentation, and are good in agreement with experimental values.

Keywords:

Mist Nozzle Evaporative Cooling, Spinning Disc Atomization,

PDF

___

[1] Kovačević, I., Sourbron, M. (2017). The numerical model for direct evaporative cooler. Applied Thermal Engineering, 113, 8-19.
[2] Wu, J. M., Huang, X., Zhang, H. (2009). Theoretical analysis on heat and mass transfer in a direct evaporative cooler. Applied Thermal Engineering, 29(5-6), 980-984.
[3]Sheng, C., & Nnanna, A. A. (2011, January). Empirical correlation of cooling efficiency and transport phenomena of direct evaporative cooler. In ASME 2011 International Mechanical Engineering Congress and Exposition (pp. 953-967). American Society of Mechanical Engineers.
[4] Khater, E. S. G. (2014). Performance of Direct Evaporative Cooling System under Egyptian Conditions. Journal of Climatology & Weather Forecasting, 2.
[5] Riangvilaikul, B., Kumar, S. (2010). An experimental study of a novel dew point evaporative cooling system. Energy and Buildings, 42(5), 637-644.
[6] Zhou, K. (2014). Calculation of Evaporation Rate of a Droplets Cluster and Conceptual Design of a Structure Utilizing Water Droplets for Evaporation. Hydrology: Current Research, 5(3), 1.
[7] Chakrabarti, S. S., Bhandarkar, L. R., Vijawargiya, A., Nageshwar Rao, P. S. R. K. (2015). A mathematical approach in the formulation of a direct evaporative cooling device, International Journal of Engineering Research & Technology (IJERT), 4, 02.
[8] Farnham, C., Zhang, L., Yuan, J., Emura, K., Alam, A. M., Mizuno, T. (2017). Measurement of the evaporative cooling effect: oscillating misting fan. Building Research & Information, 45(7), 783-799.
[9] Santos, J. C., Barros, G. D. T., Gurgel, J. M., Marcondes, F. (2013). Energy and exergy analysis applied to the evaporative cooling process in air washers. International Journal of Refrigeration, 36(3), 1154-1161.
[10] Farnham, C., Nakao, M., Nishioka, M., Nabeshima, M., Mizuno, T. (2011). Study of mist-cooling for semi-enclosed spaces in Osaka, Japan. Procedia Environmental Sciences, 4, 228-238.
[11] Akintunji, L. L., Ibrahim U. Haruna, Bello S. Momoh. (2014). Theoretical evaluation of the potential of evaporative cooling for human comfort using feasibility index (Fi) model, International Journal of Scientific Technology Research, 3, 3.
[12] Huang, X., Chen, L., Kang, Y., Lei, M., Chu, J. (2017). The applicability and application of evaporative cooling in countries around ‘The belt and road initiative’. Procedia Engineering, 205, 233-240.
[13] Kachhwaha, S. S., Dhar, P. L., Kale, S. R. (1998). Experimental studies and numerical simulation of evaporative cooling of air with a water spray-I. horizontal parallel flow. International Journal of Heat and Mass Transfer, 41(2), 447-464. [14] Turkyilmazoglu, M., Cole, J. W., Gajjar, J. S. B. (2000). Absolute and convective instabilities in the compressible boundary layer on a rotating disk. Theoretical and Computational Fluid Dynamics, 14(1), 21-37.

Başlangıç: 2015
Yayıncı: YILDIZ TEKNİK ÜNİVERSİTESİ

Arşiv