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THE DIAGRAM OF GRASSMANN IN EXERGETIC ANALYSIS OF AIR CONDITIONING SYSTEMS FOR CLEANROOMS

Journal: REFRIGERATION ENGINEERING AND TECHNOLOGY (Vol.50, No. 5)

Publication Date:

Authors : ; ;

Page : 17-22

Keywords : Exergy balance ? Air conditioning systems ? Cleanrooms ? Exergy efficiency ? Diagram of Grassmann;

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Abstract

In modern technologies, which are related to energy transformation, namely in the air conditioning systems, important place are occupied by objects creation and improvement of which requires the use of innovation thermodynamics. Classic apparatus of this science is often insufficient to solve new tasks; it is necessary not only to its further development, but its combination with the elements of a systematic approach and energetic. Innovation mathematical research model of the central straight flow air conditioning system for cleanroom in order to computer’s estimation its energy effective by virtue of exergetic output-input ratio and losses of exergy depending on different factors, which have influence on its work, was used in this article. The diagram of Grassmann of exergy flows and losses for chosen air conditioning system at outdoor air temperature 42°С was defined thanks to this model. It is shown that the chosen air conditioning system has high losses of exergy in the refrigeration machine, in the pump of cold water and in the fan unit, decreasing which will give the opportunity to gain the highest exergetic output-input ratio , and it means to gain the most advantageous economical variant of exploitation of chosen air conditioning system.

Last modified: 2015-01-18 04:56:25