Continuous adsorption pumping

A new scheme for an adsorption pump is proposed. The vacuum pump is designed to operate with respect to a rigidly determined four-stroke closed cycle which consists of two isotherms and two isosteres. It is shown that routine information about the thermodynamic properties of the adsorbent is required for detailed calculation of the operating characteristics of the continuous adsorption pump (CAP). Some design peculiarities, such as a small difference in the temperatures of the adsorption and desorption processes, the adsorbent positioning and the method of adsorbent heating, together are expected to provide a pumping capacity for a CAP which is comparable to that of a Roots pump.