PREDIKSI KOEFISIEN PERPINDAHAN PANAS DENGAN ANALOG! PERPINDAHAN PANAS¬MASSA UNTUK BERBAGAI BENTUK BENDA (PREDICTION OF HEAT TRANSFER COEFFICIENT USING HEAT-MASS TRANSFER ANALOGY FOR VARIOUS BODIES SHAPE)

ABSTRACT Prediction of heat transfer with heat and mass transfer analogy was done by considering the fact that direct heat transfer predictiion has difficulties with thermocouple installation system. This research was intended to develop h and h D formulations for various bodies shape and orientation. The results of this research will be compared with Nu-Re correlation for spheres . This research used naphthalene that was molded to cylindrical, cubical and baulk like forms. The specimens were put in a wind tunnel, and examined at various positions, sizes, and air velocities. The weight reductions of the specimens were used to calculate the coefficient of mass transfer. The coefficient of heat transfer was estimated from the mass transfer coefficient. The results of the measurement indicated a very close relation to the Nu-Re correlation for spheres. It proved that the realibility of the mass-heat transfer analogy method used in the research was good. Keyword : heat-mass transfer, naphthalene, sphere, and Nu-R