(719m) A Simplified Analysis of Temperature Swing Adsorption in Honeycomb Rotor Dehumidifiers

Honeycomb rotor dehumidifiers have been used widely because of large surface area and rapid thermal response. Mass and temperature transfer behavior for the performance evaluation is rather complicated and a system of simultaneous partial differential equations of 8 variables must be solved under a cyclic initial condition for the complete simulation.

With high efficiency dehumidifiers, however, a relative heat capacity Λ(=ρ_cc_c(1-ε)Z/ρ_gc_gUt_c) is smaller than unity and a relative adsorption capacity M(=ρ_cq₀^*(1-ε)Z/C₀Ut_c) is higher than unity. When the cycle time t_c is selected properly under the above condition, each step of adsorption/desorption can be divided into two different time zones, i.e. a transition stage appearing just after switching the step until t/t_c The above simplified model is proposed together with a graphical solution method and the result is compared with the more rigorous simulation.