Estimation of dehumidifying performance of solid polymer electrolytic dehumidifier for practical application |
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Authors: | Shuichi Sakuma Shiro Yamauchi Osamu Takai |
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Affiliation: | (1) Ryosai Technica Company Ltd., Tsukaguchi-Honmachi 8-1-1, Amagasaki Hyogo, 661-0001, Japan;(2) Tada Electric Co., 488, Shimokasaka, Oku-cho, Setouchi 701-4247, Japan;(3) Nagoya University, Furocho, Chikusa-ku, Nagoya 464-8603, Japan |
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Abstract: | A two-layer model for a solid polymer electrolytic (SPE) dehumidifier is applied to a system in which the chamber to be dehumidified
has some leakage area. By introducing this area, the attainable humidity in the chamber, which is the steady-state humidity
to be attained after a long-time dehumidification, can be defined. Experimental results of dehumidification by an SPE dehumidifier
are compared to the calculations based on the two-layer model for the SPE dehumidifier, which was presented in our previous
paper. Equations for the two-layer model are simplified by making use of assumptions for the current characteristics and a
constant environmental condition, and it is reduced to equations including a differential equation on the time variation of
the humidity in the chamber. The differential equation to describe the attainable humidity in the chamber and time constant
for the dehumidification is obtained. The current flowing in the dehumidifier under steady state conditions is also given
as a function of the humidities in the spaces facing the anode and the cathode. A diagram to estimate the attainable humidity
and the time required for dehumidification from the dehumidifying area and leakage area is also given. |
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