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Thermal Performance Evaluation of Water Mist Assisted Air Conditioner

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International Journal of Computer Applications
© 2014 by IJCA Journal
Volume 105 - Number 16
Year of Publication: 2014
Authors:
Najim Abid Jassim
10.5120/18459-9538

Najim Abid Jassim. Article: Thermal Performance Evaluation of Water Mist Assisted Air Conditioner. International Journal of Computer Applications 105(16):5-10, November 2014. Full text available. BibTeX

@article{key:article,
	author = {Najim Abid Jassim},
	title = {Article: Thermal Performance Evaluation of Water Mist Assisted Air Conditioner},
	journal = {International Journal of Computer Applications},
	year = {2014},
	volume = {105},
	number = {16},
	pages = {5-10},
	month = {November},
	note = {Full text available}
}

Abstract

Small air conditioning units are usually used for small and medium scale residential buildings. Therefore, more energy efficiency and lower cost are needed along with reliable control for the air conditioning units. This paper considers how the thermal performance can be improved, when the water mist system is coupled with the air cooled conditioner as a pre-cool for condenser inlet air to increase the cooling capacity, and decrease the compressor power consumption. An experimental investigation has been carried out to study the thermal performance of a water mist assisted air conditioner under ambient temperatures ranging from 20? to 52?. The influence of condenser and evaporator inlet air temperatures on the cooling capacity and power consumption has been investigated and presented. The performance of the entire air conditioning system is simulated by integrated the air conditioner model and water mist model using the TRANSYS Simulation Program. The model is validated by real operating data from the system. It has been found that due to the coupling of water mist with air cooled condenser, the cooling capacity of the air-cooled air conditioner was increased by 17. 5%, and the compressor power consumption was reduced by 15. 5% is achieved. It is concluded that the application of water mist condenser inlet air pre-cooling could increase the COP by up to 37%, especially when the ambient relative humidity is low. Good agreement was obtained between the experimental and simulated results for the performance of air conditioner.

References

  • ASHRAE, 2009, ASHRAE Handbook-Fundamentals, American Society of Heating, Refrigerating and Air-conditioning Engineers, Inc. , Atlanta, GA
  • BiranganeV. V. , Patil A. M. , 2014,"Comparison of air cooled and evaporatively cooled refrigerartion systems, Int. Journal of Engineering Research and Applications , Vol. 4(6), 208-211.
  • Cansevdi B. , Calli U. and Hepbasli A. , 2009, "Improving the energy performance of air-cooled chillers with water-spray mist pre cooling: an Application".
  • Hsieh, C. -C. and Yao S. C. , 2006, "Evaporative heat transfer characteristics of a water spray on micro-structured silicon surfaces", International Journal of Heat and Mass Transfer Vol. 49(5-6), 962-974.
  • Manske, K. A. , Reindl, D. T. et al. 2001, "Evaporative condenser control in industrial refrigeration systems. International Journal of Refrigeration", 24(7), 676-691.
  • Yang J, Chan K. T. , and Wu X. , 2009, "Application of water mist pre-cooling on the air cooled chiller", Eleventh International IBPSA Conference, Scotland, July 27-30.
  • Chan K. T. , Yang J. , and Yu F. W. , 2011, "Energy performance of chillers with water mist assisted air-cooled condensers", 12th conference of international building performance simulation association, Sydney, 14-16 November.
  • Yu, F. W. and Chan, K. T. , 2009, "Modeling of improved energy performance of air-cooled chillers with mist pre-cooling", Int. Journal of Thermal Sciences, Vol. 48 (4), 825-836.
  • Zhang, H, You, S. J, Yang, H. X, Niu, J. L. , 2000, "Enhanced performance of air-cooled chillers using evaporative cooling", Build. Services Eng. Res. Technology, Vol. 21 (4), 2000, pp 213-217.
  • TRANSYS, 1996,Transient system simulation environment program, University of Wisconsin, Madison, USA.