A few years have gone by since the completion of my earlier work Stirling cycle machines. Much has happened in that interval. It is timely to attempt, not simply a revised and updated version, but rather the production of a more substantial work. The earlier book was prepared from a collection of notes put together hurriedly for a one-day seminar during sabbatical leave at the University of Bath» in England, where I was remote from my reference collection. 'I he slender volume was surprisingly well received, reprinted several times, published as a paperback, and translated into Russian.

This time I have no escape clause for this book was written with more leisure at the University of Calgary with full acccss to all my references. Not only that, but by the award of an Isaac Killam Memorial Fellowship, the University relieved me of all mv teaching and administrative responsibilities during the period of its composition. I am most appreciative of this. It is my hope that the ensuing text will justify the respite from my ordinary labours, the burden of which undoubtedly fell on the shoulders of my colleagues in the Department of Mechanical Engineering.

Chapter 11, 'Free-piston Stirling engines,' was contributed by William Bcale, the father of the free-piston Stirling engine. Chapter 20, 'Model Stirling engines', was contributed by Andrew Ross, an attorney fast becoming distinguished in Ihe model Stirling engine fraternity. I was most happy to have these specialists participate, and wish to make clear that credit for all that is contained therein rests entirely with them.

The very extensive bibliography on Stirling engines contained herein was prepared by my daughter Josephine, my wife Ann, and my secretaries Karen Odegard and Marlenc Stewart. This most tedious and exacting burden was lifted entirely from my shoulders in a most gratifying fashion.

Similarly the index was prepared with great dedication by Marlenc Stewart. I ler work greatly facilitated this important but exacting last lap.

I have many others to thank for much help over the past twenty years in the course of my work on Stirling engines. l irst. I owe to Aubrey Burstall, Professor Emeritus of the University of Ncwcastle-011-Tyne, my thanks for introducing me to Stirling engines and providing early opportunities. 1 owe much to an earlier mentor, W. E. Durney, of Wolvcrton Technical College, for rousing in me an abiding interest in engineers and their works. Specialists in the field who contributed to my understanding include my old and close friends, Ted Finkelstein and William Beale. Others are Bill Martini. Worth Percival, Rolf Meijer, Jan Kohler, and the work. I have gained much from the writings and the many kindnesses of Zacharias, Kuhlman, Carlqvist, Lia. and their staff and colleagues. By their lucid writings Joe Smith at M.I.T.. Bill GiiTord of the University of Syracuse, Costa Rallis at Johannesburg, Allen Organ at Kings College. London, and theii students have helped me understand many things.

At Calgary I am grateful for the many opportunities I have to share my thoughts with John Kentfield and to gain much from his optimistic, inquisitive and resourceful perception of the nature of things. Peter Glöckner. 1 lead of the Department of Mechanical Engineering and all my colleagues there, by their interest and encouragement, helped substantially in bringing the book to completion.

In keeping with current trends 1 have attempted to produce a 'bilingual' volume in SI units with the customary British units following in parentheses. Much of the labour of unit translation was accomplished by my able graduate student. Amoo/egar-Faisie. On my instructions he adopted a cavalier approach to 'rounding ofT that I expect will offend the purists. The responsibility for this is all mine.

The ladies of the office, particularly Karen Odegard, Jean Buckton, Marlene Stewart. Betty-Ann Maylor. and Ida Pfisterer all deserve my appreciation and thanks for their elforts in producing fait copy. Bert Unterberger and his girls have done great things with the illustrations herein.

Despite meticulous attention to detail by my assistants and myself there will be, no doubt, numerous errors and omissions for which 1 accept full responsibility. Many wrote to advise me of deficiencies in my earlier work. Where it was appropriate 1 have made the correction or rectified an omission. I appreciate the help of all who wrote to me before and thank, in advance, all who will discover and advise me of mistakes in the present work.

My children. Josephine and Christopher, and my students, have all contributed by sacrificing much of my time, interest, and effort they could have reasonably expected to be their due.

Finally I have to offer my greatest appreciation and thanks to my wife, Ann. She is undoubtedly the best-informed, or, at any rate, the most talked-at Canadienne in the field of Stirling engines. She has managed to survive and. with lier unfailing good humour, somehow makes it all seem in the end to be worthwhile.

University of Calgary September. 1978

G. wai.ker

Solar Stirling Engine Basics Explained

Solar Stirling Engine Basics Explained

The solar Stirling engine is progressively becoming a viable alternative to solar panels for its higher efficiency. Stirling engines might be the best way to harvest the power provided by the sun. This is an easy-to-understand explanation of how Stirling engines work, the different types, and why they are more efficient than steam engines.

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