THE DEPENDENCE OF THE EXERGETIC OUTPUT-INPUT RATIO OF AIR CONDITIONING SYSTEM FOR OPERATING CLEANROOMS ON TEMPERATURE AND MOISTURE CONTENT OF OUTDOOR AIR

In modern technologies, which are related to energy transformation, namely in air conditioning systems, important places are occupied by equipment and processes, the objective estimation of value of its energy perfection can be defined only on the basis of analysis of its exergy effectiveness. Innovation mathematical research model, created by the authors, of the implemented central straight flow air conditioning system for operating cleanrooms was used, which gave opportunity to make computer estimation of its energy effectiveness by the virtue of exergetic output-input ratio depending on different factors, which have influence on its work, in particular on parameters of outdoor air ( , ). The dependence of exergetic output-input ratio of implemented central straight flow air conditioning system with recuperative air cooler and air productivity that is 4300 kg/hr for operating cleanrooms on parameters of outdoor ( , ) air by different indoor parameters ( , ) and on temperature difference between indoor and supplied air was presented. This dependence showed that the exergetic output-input ratio of the system gains its maximum by lower temperatures of outdoor air. It was shown that for providing the microclimate in operating cleanrooms the implemented central air conditioning system, with the aim of energy saving, should be used by temperature of outdoor air ≤ 35°С and by higher (as much as possible) temperature difference between indoor and supplied air ≥ 6,0°С. This will give the opportunity to get a high exergetic output-input ratio ≥ 1,93, which means to get the most economical variant of exploitation of the implemented air conditioning system. It is worth to mention that moisture content of outdoor air has no influence on exergetic output-input ratio of this air conditioning system.