First U. K. National Conference on Heat Transfer, Volume 2, documents the proceedings of the conference organized by the U. K. National Committee for Heat Transfer—a joint committee of the Institutions of Chemical and Mechanical Engineers and includes a member nominated by the Heat Transfer Society—held at the University of Leeds, on 3-5 July 1984. It is intended that the Leeds conference will be the first of a series of UK National Conferences which will be held at four-yearly intervals (1984, 1988, 1992 etc). Thus, for people working in the heat transfer field there will be an opportunity to present and discuss their work at a major conference every two years. This volume contains 52 papers that were presented during Sessions 11-20. The papers in Session 11 deal with enhanced heat transfer. Session 12 presents studies on two-phase flow and boiling. Session 13 contains papers on natural convection. Session 14 focuses measurement techniques in heat transfer while Session 15 deals with heat transfer in high temperature systems. The presentations in Session 16 cover heat transfer in combustion systems while those in Session 17 focus on convective heat transfer. Session 18 takes up heat transfer in cross-flow. Session 19 discusses papers on applied heat transfer. Session 20 deals with studies on industrial heat exchangers.