Abstract

The results of numerical modeling of the processes of drying and regeneration of the adsorbent by heat of compression are presented on the example of the scheme of adsorption drying with the separation of the air flow on the stage of the cooling of the adsorbent. The dynamics of temperature and humidity parameters within the technological columns at all three stages of the adsorption and regeneration cycle was evaluated. It is shown that the considered scheme of adsorption drying allows to provide rather stable average dew point of the dried compressed air without losses on the adsorbent purging.

Highlights

  • The question of air drying in the process of compression is a relevant problem on the way to increase the energy efficiency of modern compressor technology [1], [2], [3] There is a sufficient number of types of technological equipment for drying compressed air

  • + c ( ) + ωc where c is heat capacity of a flow in J/ kg*K, c is heat capacity of an adsorbent in J/ kg*K, T is the temperature of flow in K, T is the temperature of adsorbent in

  • Where c is heat capacity of an adsorbent in J/ kg*K, T is the temperature of adsorbent in K, T is the temperature of flow in K, α is heat-transfer rate in W/m2×K, τ is time in s, Q is heat of sorption / desorption in J/kg, f∗is reduced area of heat-transfer in m2/kg

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Summary

INTRODUCTION

The question of air drying in the process of compression is a relevant problem on the way to increase the energy efficiency of modern compressor technology [1], [2], [3] There is a sufficient number of types of technological equipment for drying compressed air. During the technology under consideration heat and mass transfer processes within the drying and regeneration cycle are purely dynamic nature, due to the A and B columns switching. The dynamic problem, according to many authors, has no analytical solution and can be solved only by numerical methods [5], [6], [7], [8]. A numerical method and a program for calculating the dynamics of heat and mass transfer during the adsorption drying of compressed air were selected as the key tool for a research [9]. The mathematical model of the calculation program is a system of equations describing the non-stationary process of changing the parameters of humidity and temperature in a one-dimensional setting on the height of the dryer column [9]

Heat balance equation c
Findings
CONCLUSIONS
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