Volume 13, Issue 13 (First Special Issue 2014)                   Modares Mechanical Engineering 2014, 13(13): 188-199 | Back to browse issues page

‎ 20.1001.1.10275940.1392.13.13.9.5

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Hosseini S, Heidarinejad G, Pasdarshahri H. Verification of Pre-Cooling Effects on Saturation ‎Effectiveness of Evaporative Coolers. Modares Mechanical Engineering 2014; 13 (13) :188-199
URL: http://mme.modares.ac.ir/article-15-4684-en.html
Verification of Pre-Cooling Effects on Saturation ‎Effectiveness of Evaporative Coolers
Sana Hosseini , Ghassem Heidarinejad * 1, Hadi Pasdarshahri
1- Tehran, Ale Ahmad Ave, Tarbiat Modares University, Department of Mechanical Engineering, Room 309
Abstract:   (7469 Views)
A hybrid cooling system encompassing; cooling tower, cooling coil and evaporative cooler have been discussed in ‎present study. Thereinafter, the hybrid system model is used to predict cooling potential of the system under various ‎operational conditions. In order to have an accurate performance prediction of the hybrid cooling system, a numerical ‎simulation was performed and the results validated using experimental measurements. The presented hybrid cooling ‎system provides the necessary pre-cooling effects, enabling a direct evaporative cooler that cools the air even below ‎outdoor air wet-bulb temperature. Besides, the potential of presented hybrid cooling system to provide thermal comfort ‎in various outdoor design conditions evaluated and compared with conventional direct evaporative cooler. Numerical ‎simulation revealed that the hybrid system complements direct evaporative cooling. Based on the simulation results, ‎the overall cooling effectiveness of hybrid system is tangibly magnified 10%-20% and also it is able to fulfill the ‎comfort condition in extended climate conditions rather than stand-alone direct evaporative coolers. Also in present ‎study water loss amount of hybrid system and direct evaporative cooler were verified in various climate conditions of ‎Iran.‎
Keywords: Hybrid cooling, Cooling tower, Direct evaporative cooler, cooling coil, comfort condition
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Article Type: Research Article | Subject: Thermal Comfort|Heat & Mass Transfer|Plumbing & Air Conditioning|Thermodynamics
Received: 2013/07/6 | Accepted: 2013/09/7 | Published: 2014/02/20
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