T11csc cs~lnlplt~s sho\v tllilt tl1c nl~inllf:lctllrc of food c:tlls iii inany tlivcrsc instances for iiltcrittioii of tlic ctinirttic coiitlitions csisting uiitiiritlly :it tlie tinic. With n constitiit tciiipcriitiirc itiitl rclntivc Iiiiriiitlity tlic iniiniifiictiircr ciiii work to ii fisctl scliecliile iiucl knows tliiit, tlic qiiiility of goods tiirnctl oiit will he unaffcctctl by the wciitlicr fiictor. :\pinst this itir-conditioning pliiiit. intcntlctl to Iliiiilitiiili rigidly it set of cnntlit,ioiis is espi?iisivc to pircliiise :tiid to rim. Wic stiiiitliirciizc~tl coiiihiniit ioii of spriiy c 1 i : i i i i I ) c ~ with refrigwitor iintl Iie:ittar iilitl niitoiniitic control will (Ii!iil w i t h rill tylJcS of' duty: h i t soiiir, Iio\vcvcr, 111it1011l)tt~l iitIvii1it;igc IliiIst 1 ) ~ S C ~ tlic fiict that C:iil IIC iilct I)y it siiiiplcx pliilt, iiiltl oftcn Lliv intelligent use of good oiit,sitlc iiittiiriil conditions mill ol)viiite thc IISC of tlic 1)liitit O V N estclitlctl periotls. It scclils tliilt d i n t is ncctlctl is niorc flcsi1)ility of pltiut used in air conditioning in food niiiiiiif:ictiirc rind n cheaper typc of iii~t:dIiitioii. If tlicse tlcliiiilitls coiiltl IJC iiict thcrc: tvoultl IJV stwi :i 1)ig iiitwiisc i n tlic tisc of such ii1)I)iirittiis i n food factories, for tlic iiitliistry iilrcndy rc:ilizcs tlie OlJvioiis iidviiritiigcs to I)c gained. I u this conliexion tlic tlcvclopiiicnt of tlic sinnll nircoiitlitioning iiiiit is of tlistinct. interest : i d iiiay ~)rovc tlic soluti~~n of tlic sitiiittioii oiitliiictl in this piper.