Studies on Low-Temperature Bin Drying Facilities (Part 1)

Dehumidifier's Performance in Dehumidification Bin Drying System and its Climatic Evaluation

Abstract

In Japan, the number of newly constructed rice drying facilities, utilizing dehumidified bin drying system has increased. This is so even in the cool district where it is doubtful whether the dehumidifier works effectively. There were no evaluation methods available to make a climatic guide line for the dehumidification rice drying system. In this report, we propose the coefficient of performance (C. O. P.) of dehumidifier as an evaluation criterion. We found that the rate of dehumidification can be expressed in terms of inlet air conditions. From the estimation expression of dehumidified water, we obtained the values of C. O. P. of dehumidifier and equilibrium moisture content of air, as functions of air temperature and humidity.