Thermophysical properties of thermal conductivity, viscosity, and heat capacity for CO₂ slurry (CO₂ gas + CO₂-hydrate mixture) were predicted by using the TRAPP model, and heat transfer coefficient and pressure drop in tube were estimated by using the calculated thermophysical properties. The feed mole fraction of CO₂ was changed from 0.7 to 1.0, and temperatures ranged from 270 to 280K @ 3000 kPa of pressure. The thermophysical properties of CO₂ slurry significantly varied with the feed mole fraction of CO₂. The heat transfer coefficient increased with increase of CO₂-hydrate fraction due to high thermal conductivity of CO₂ slurry. Beside, the pressure drop decreased with increase of CO₂-hydrate fraction.