CONVECTIVE MODEL ICE FORMATION NUMERICAL MODEL SOLIDIFICATION PCM VERTICAL CYLINDER HEAT PIPE MODIFIED GEOMETRY STRATIFIED STORAGE PLATE TYPE STORAGE SENSIBLE HEAT STORAGE PCM WALL POROUS CAVITY FLOW VARIABLE MASS INJECTION HEAT PIPES ABSORBER PARABOLIC SOLAR COLLECTOR FLAT HEAT PIPE SINTERED WICK WICKED HEAT PIPE ROTATING HEAT PIPE TWO DIMENSIONAL FLUIDIZED BED HEAT STORAGE FUSION SOLIDIFICATION ENERGIA-ARMAZENAMENTO LATENT HEAT STORAGE PHASE CHANGE MATERIAL MUDANCA DE FASE MEIO POROSO