RT Web Page SR Electronic(1) ID 952593 A1 D. Brian Spalding T1 Unsteady operation YR 2016 FD 2016-03-28 NO Periodic operation, of regenerator, PB Begell House Inc. PP New York DO 10.1615/hedhme.a.000093 RD 2025-07-26 UL https://hedhme.com/content_map/?article_id=93&link_id=9525 WT HEDH Multimedia - Heat Exchanger Design Handbook, Multimedia Edition WP 2016-03-28