International Science Index


Evaporative Air Coolers Optimization for Energy Consumption Reduction and Energy Efficiency Ratio Increment


Significant quota of Municipal Electrical Energy consumption is related to Decentralized Air Conditioning which is mostly provided by evaporative coolers. So the aim is to optimize design of air conditioners to increase their efficiencies. To achieve this goal, results of practical standardized tests for 40 evaporative coolers in different types collected and simultaneously results for same coolers based on one of EER (Energy Efficiency Ratio) modeling styles are figured out. By comparing experimental results of different coolers standardized tests with modeling results, preciseness of used model is assessed and after comparing gained preciseness with international standards based on EER for cooling capacity, aeration, and also electrical energy consumption, energy label from A (most effective) to G (less effective) is classified; finally needed methods to optimize energy consumption and coolers’ classification are provided.

[1] Power Researches Center, Household Electric Statistical Analysis Report. Tehran: Energy Division, 1996.
[2] Evaporative coolers test methods and specifications. Iran National Standards, no. 2436.
[3] Energy Affairs Adjutancy, Energy Balance Sheet. Tehran: Power Ministry, 1994.
[4] S. L. Dixon, Fluid Mechanics and Thermodynamics of Turbomachinery, Butterworth- Heinemann, MA: USA, 2010.
[5] “Low energy cooling, design tools for evaporative cooling, algorithms for direct and indirect evaporative coolers,” IEA, Annex.28.
[6] Sonntag, R. Edwin, V. Wylen, G. John, Fundamentals of Thermodynamics, 6th Edition, John Wiley & Sons, NJ: USA, 2003.
[7] Handbook of Evaporative Air Conditioning, Chapman & Hall Publication, 2nd Edition, United Kingdom, 1974.