Performance Study of Spot Cooling of Tractor Cabinet. (Dept. M)

Abstract

The target 01 tbis research is to study theoretically and experimcntaUy tbe performance of spot cooling of • tractor ubiael including. single interoJ heal source (tested body) by using vortex tube..la tbe tbeoretical study, tbe cabinet is cooled from the roof by ODe port ud constant wall temperature for lower aDd side walls. The effect 0( inlet .Itd o.Uet air ports poeitioos in tbe cabinet is considered.Moreover,lbe inOutoce nrvari_, th, inlet cold air velocity to cabiDet from ~.7 to 12.5 mIs, inlet cold air temperature to cabinet (rom 282.1 to 29'7.3 K, inlet air pressure to vortex tube from 1 to 6 bar, cold fraction of vortel. (ube from 29.6 to 78.9 and the uc"lmede~ number from 12.55 to 617.84 in tbe presence of II belli source with. COOSUlitt bealflul. of 120 W/m z is abo studied. In this work ,FLUENT 6.3.26 package is used ill Numerical study. The package solved the steady 2-D compressible viscous now. Various spot cooling geometries are applied. Specific conditions for eacb case are defined, aud the computational fluid dynamics is provided for tbrte different groups. Twelve CIiSes of 10C81 iolet and outlet porb. The calculations au performed (or veutilaUon errectiveness rador (VEF) which is ranging from 0.58 to 1.29. Tbe best position for tbe Inlet locations is found io the up righl of roof and the outlet locations in tbe .p of &eft side. To validate the ideal case., au eJpermiutal test rig bas ben desigoed and CODstrdCted with the Bclll.1 dimensions of the trador cabineL The esperminb are aimed out witb the same conditions the of ideal case. The compuison of t.e eIperimeatal d.ta for tb.t of the best position of the inlet port with the theoretical rC3ulb gives a satisfactory agreement.