Potential of direct evaporative cooling system under metal plate attachment to wetted pad application

Authors

  • Mohd Syahray Izham Muhazihat Faculty of Manufacturing Engineering, Universiti Malaysia Pahang, 26600, Pekan, Pahang, Malaysia
  • Nurrina Rosli Faculty of Manufacturing Engineering, Universiti Malaysia Pahang, 26600, Pekan, Pahang, Malaysia
  • Radhiyah Abd. Aziz Faculty of Manufacturing Engineering, Universiti Malaysia Pahang, 26600, Pekan, Pahang, Malaysia
  • Abdul Aziz Jaafar Faculty of Manufacturing Engineering, Universiti Malaysia Pahang, 26600, Pekan, Pahang, Malaysia

DOI:

https://doi.org/10.15282/jmmst.v1i1.200

Keywords:

Direct evaporative, cooling system, Cooling efficiency, Heat transfer rate, Temperature reduction

Abstract

Direct evaporative cooling (DEC) system, even in the simpler configuration, is concerned with the wet pad design for improving system cooling performance. The performance measure is assessed by the evaporation of the pad liquid content and changes of mainstream flow properties. This article examined a potential DEC design in laboratory scale that incorporates a water-based wet pad with metal plate attachment. The proposed system is modelled by a low speed uniform air flowing over a heated wet pad. The influence of metal thermal conductivity and the surface contact on air temperature and humidity was evaluated. The results shows that efficiency increases nearly 50 % despite poor influence of metal property and contact area on mainflow properties. Increasing contact area of metal plate plays a major role to preserve the cooling efficiency. Since, base pad without metal plate shows superior performance than that of with metal plate due to the loss sensible heat, DEC system must be designed with consideration of providing more homogenous air mixture and preventing the loss sensible heat.

References

Duan Z, Zhan C, Zhang X, et al. Indirect evaporative cooling: Past, present and future potentials. Renew Sustain Energy Rev 2012; 16: 6823–6850.

Lal Basediya A, Samuel DVK, Beera V. Evaporative cooling system for storage of fruits and vegetables - A review. J Food Sci Technol 2013; 50: 429–442.

Boukhanouf R, Ibrahim HG, Alharbi A, et al. Investigation of an Evaporative Cooler for Buildings in Hot and Dry Climates. 2. Epub ahead of print 2014. DOI: 10.7763/JOCET.2014.V2.127.

Liberati P, De Antonellis S, Leone C, et al. Indirect Evaporative cooling systems: Modelling and performance analysis. Energy Procedia 2017; 140: 475–485.

Huang X, Li X, Sheng X, et al. The research of the key problem of evaporative cooling system in dry areas subway. Energy Procedia 2014; 61: 1965–1968.

Chiesa G, Huberman N, Pearlmutter D, et al. Summer Discomfort Reduction by Direct Evaporative Cooling in Southern Mediterranean Areas. Energy Procedia 2017; 111: 588–598.

Yao Y, Zhang Z, Hu X. Experimental contrast on the cooling performance of direct evaporative all fresh air handling units with R32 and R410A. Procedia Eng 2017; 205: 802–809.

Shokri Kuehni SMS, Bou-Zeid E, Webb C, et al. Roof cooling by direct evaporation from a porous layer. Energy Build 2016; 127: 521–528.

Al-Sulaiman F. Evaluation of the performance of local fibers in evaporative cooling. Energy Convers Manag 2002; 43: 2267–2273.

Maurya R, Shrivastava N, Shrivastava V. Performance evaluation of alternative evaporative cooling media. Int J Sci Eng Res 2014; 5: 676–684.

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Published

13-09-2018

How to Cite

Muhazihat, M. S. I., Rosli, N., Abd. Aziz, R., & Jaafar, A. A. (2018). Potential of direct evaporative cooling system under metal plate attachment to wetted pad application. Journal of Modern Manufacturing Systems and Technology, 1, 69–75. https://doi.org/10.15282/jmmst.v1i1.200

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Section

Articles