2128.     LOBO, W. E., AND SKAPERDAS, G. T.  Air Purification in the Reversing Exchanger.  Chem. Eng. Progress, vol. 1, No. 2; Trans. Am. Inst. Chem. Eng., vol. 43, 1947, pp. 69-74; Chem. Abs., vol. 41, 1947, p. 1504.

        Theory, a description, and the operation of the reversing exchanger developed as a part of the Collins low-pressure O₂ producer.  Also described in the so-called unbalance-flow method for temperature control by means of an internal recycle system, developed by Trumpler, as a means of heat exchange and scavenging.