•  
  •  
 

Abstract

This article deals with evaporative cooling devices used in air conditioning systems. Various ways of lowering the air temperature to the dew point have been identified as a result of improvements to the devices considered. It is also indicated that the circulating water temperature in the system can be lowered to the air temperature on the wet bulb thermometer. As is known, recirculating water is often used as a cooling water in process units to reduce water consumption in industrial plants. Circulating water is heated by recirculation and the heated water is cooled in ventilated cooling towers. This method of cooling water by direct evaporation is based on the thermodynamic disequilibrium of atmospheric air and the difference in psychrometric temperatures between dry and wet thermometers. This method of water cooling, offered in air conditioning systems for dry and hot climates, is very effective. Modern, efficient solutions are needed for a wide range of energy-saving techniques in air conditioning systems. One such solution is to pre-cool the air entering the unit (in heat exchangers) or to use natural cooling sources. The use of an energy-saving chiller with an indirect evaporator as a source of cold water in hot and dry climates is therefore recommended in air conditioning systems.

First Page

254

Last Page

259

References

  1. A.G. Averkin, A.I. Yeremkin, K.V. Mironov. Cooling tower based on indirect evaporative air cooling. “Engineering Systems”. 2008. 68.
  2. V.A. Arsiry, N.A. Tamer. Water cooling in the cooling tower to the dew point of atmospheric air. “Trudi of the Odessa polytechnic university”. 2009. 73.
  3. Y.D. Frolov, S.A. Garanov, O.B. Bionishev, A.A. Zharov. “Thermal calculation of a regenerative indirect evaporative air cooling cycle”. 2001. 29.
  4. X. Xie, Yi. Jiang. An indirect evaporative chiller. “Frontiers of energy and power engineering in china”. 2010. 66.
  5. N.O. Usmonov, K.S. Isakhodzhayev, M.A. Koroli. Determining the parameters of the fluid layer with a rigid mobile nozzle. “Thermal engineering”. 2021. 221.
  6. A.V. Doroshenko. Evaporative coolers of combined type for air conditioning systems. “ABOK Ventilation, heating, air conditioning, heat supply and building thermal physics”. 2005. 58.
  7. R.A. Zakhidov, O.N. Usmonov. Review of the evaporative cooler in air conditioning systems. “Problems of energy and resource saving”. 2020. 133.
  8. A.J. Faisal, H.E. Dessouky, H. Ettouney, A.Q. Mona. Experimental evaluation of one, two, and three stage evaporative cooling systems. “Heat Transfer Engineering”. 2020. 72.
  9. O. Amer, R. Boukhanouf, H. Ibrahim. A review of evaporative cooling technologies. “International journal of environmental science and development”. 2015. 111.
  10. J.R. Camargo, C.D. Ebinuma, S.S. Cardoso. Mathematical Model of Direct Evaporative Cooling Air Conditioner. “International journal of heat and technology”. 2012. 25.
  11. A.N. Fedyaeva, S.Y. Matyushkov, G.V. Rogovtsev, A.N. Tarasov. Traction electric drive control at the limit of wheel-rail adhesion and suppression of frictional autooscillations. “Publishing house of VNU”. 2011. 31.
  12. R. Schreiber. “Optimization of the adhesion coefficient of an electric locomotive of the 12x series”. 2000. 29.
  13. S.V. Kikichev. Increasing the efficiency of adhesion activators by improving their adhesion characteristics. “Abstract of the thesis”. 2009.
  14. B. Engel. Traction control with high use of adhesion forces. “World railways”. 1999. 39.
  15. D.K. Minov. “Improvement of traction properties of electric locomotives and diesel locomotives with electric transmission”. 1965. 267.
  16. E.M. Frenkel. To the question of wheel-rail adhesion. “Trans Holder Publishing”. 1953.
  17. G. Heidarinejad, M. Bozorgmehr. Modelling of indirect evaporative air coolers. “International journal of heat and mass transfer”. 1993. 17.
  18. G.Q. Qiu, S.B. Riffat. Novel design and modelling of an evaporative cooling system for buildings. “International journal of energy research”. 2006. 985.
  19. K.A. Al-Saud, N.A. Al-Hemiddi. The effectiveness of natural evaporative cooling in improving internal thermal environment in hot-dry regions. “International journal of ambient energy”. 2003. 83.
  20. ASHRAE Handbook, heating, ventilating, and air conditioning, systems and equipment, American society of heating. “Refrigerating and air conditioning engineers”. 2000.
  21. O.Y. Kokorin. Air conditioning installations. “Mechanical Engineering”. 1978. 264.

Download

Share

COinS
 
 

To view the content in your browser, please download Adobe Reader or, alternately,
you may Download the file to your hard drive.

NOTE: The latest versions of Adobe Reader do not support viewing PDF files within Firefox on Mac OS and if you are using a modern (Intel) Mac, there is no official plugin for viewing PDF files within the browser window.