The distribution of temperature obtained by the solution of Schumann equation and that of experimentally obtained on tile cooling process of packed bed of citrus unshu show a good agreement, and the maximum deviation is only $1-2^{circ}C$. The agreement means that it is possible to apply the Schumann model to the cooling process of packed bed of citrus unshu. In considering respiration heat, the numberical result by the solution of the equation is that in case of the velocity of gas $(3^{circ}C)$ is above 1m/sec, becomes below 0.01 and effect of respiration heat is negligible and in case of below 1m/sec the velocity of gas $(3^{circ}C)$ is above 0.01 and the effect of respiration heat must be consideied. We Present the Practically easily applicable figure of cooling characteristic line on the both . cases of short term cooling Process and long time storage of citrus unshu.