EXPERIMENTAL STUDY OF THE CIRCULATION AIR VOLUME OF RECIRCULATION EVAPORATIVE COOLING

This p a per i n t rod u ces t h e te ch no l ogy o f re - circ u lati o n e v aporati v e c o oli n g (REC),w h ich u ses a p o r tio n o f sup p l y ai r a s sec o n d a ry ai r t o ma k e c oo l wa t er us e d t o i nd i rec tl y c o ol ou t s i de a i r thro u g h a heat exch an ge r . Th e circulation v o l u m e of sec o nd a ry a i r i s one of t h e m ain factors that have a n i m pact on the e f fecti v e n ess o f REC. Accor d i n g to t h e techn o lo g y,a set of app a ratus was set up. The cooling e f fect was test e d und e r d i f f e rent circulation vo l u m es of secondary air i n sum m e r . The t est re s u lts s how t h at t h e c ooling e f fecti v e n ess ra p i d l y i n creases and t h en le v els o f f with t h e increase of the ratio of cir c ulation volume. W e conc l ud e t h at t h er e i s a p ro p er ra n g e o f t h e ci rc u l a ti o n vo l u m e

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