Int. J. Heat Mass Transfer.
Printed in Great Britain

Vol. 29, No.

IO, pp1453.-1455.

1986

0017-9310/86
33.00+0.00
PergamonJournals Ltd.

Professor S%ndor Endr6nyi
on his 90th birthday

IN SEPTEMBER 1986, Professor S. Endrttnyi, wellknown for his contributions in the field of heat andmass transfer, celebrated his 90th birthday. It gives us
great pleasure to be able to report that this elder
statesman among the practitioners in the field is still
fully active, both in teaching and in research. In thefollowing short note, only a brief review can be givenof his illustrious career and achievements.
SBndor EndrCnyi was born in 1896 in Budapest,
Hungary, where he commenced his studies at theTechnical University in 1914, the year World War I
broke out. He obtained the diploma of a mechanicalengineer in 1918. In those early years he was alreadydrawn to a scientific career, and recognizing hisabilities, several of his professors invited him tobecome their assistant. He had been working forProfessors Banki (the inventor of a well-known type ofwater turbine and co-inventor of the carburetor),
Schimanek, Rethy and Wittmann; Professor Banki
had also employed him in his consulting office. In1919, he helped L. Szilard (later of atomic bomb fame)to organize a series of historic lectures with Theodore
von Karmanas the principal lecturer; otherparticipants included I. Brody and K. Polanyi.
In the aftermath of World War I, and indeed until
HWT
29:10-11

the end of World War II, circumstances did not allow
him to engage in scientific work. Only after 1945 could
he gradually return to his primary interests, researchand teaching. Over the years, he made manycontributions
to the development in Hungary oftechnologies based on heat transfer processes, and also
to the state-of-the-art internationally. He was the firstin Hungary to introduce a curriculum on climaticcontrol, and to organize a research committee and a
graduate course on drying processes. From 1948 until
this day he has been regularly lecturing at theTechnical University of Budapest. In 1962, theHungarian Academy of Sciences awarded him thedegree of Candidate of Technical Sciences, and in
1976, that of Doctor of Technical Sciences.
Outside Hungary, he has been active, as acontributor or an organizer, at many international
events. He was a member of the Advisory Committeeof the All-Union Conferences on Heat and Mass
Transfer in 1961, 1964, 1968 and 1972 (Minsk,U.S.S.R.) and a Division Chairman of the FourthInternational Heat Transfer Conference in Paris in
1970. He is a member and the Hungarian
Representative of the International Centre for Heatand Mass Transfer, and is on the editorial boards of1453

1454

K. VERTESFFYand J. VERHAS

several journals of international
repute. He wasinvited to present seminars at universities in manycountries. including the United States (PrincetonUniversity, State University of New York, Universityof Minnesota, etc.).
Professor EndrCnvi’s main area of interest. within
the area of heat and mass transfer, is the study ofdrying
processes. His outstanding
results in
psychometry, and in the drying of sorptive and porous
materials (documented in the bibliography below) are
well known by researchers in the field. But his interests
and activities go far beyond the confines of hisspecialties--he is equally at home in such areas as
the~odynamics,
hydrodynamics,chemical processes,
process control, physics of colloids, or the protectionof the environment. He has been involved in the designof a whole range of equipment and systems; examples
include thermal plants for industrial consumers,
heating and ventilation
systems, electric power
distribution networks, equipment for paper and textile
manufacture, industrial energy systems and industrial
processes.
Today, at the age of 90, he is still fully active inresearch, consulting, teaching and committee work. Inaddition, he is always ready to share his knowledge
and experience and advise younger (and that includesall) colleagues. He will discuss, with equal enthusiasm,
technical topics, music, literature, or international
affairs. On behalf of his students and former students,
co-workers and many admirers, we wish him the bestof health and many more years of active life, rich inresults, friendship and rewarding experiences.
K. VERTESFFY
J. VERHAS

BlBtlOGRAPHY

OF SANDORENDRkNYI

Heut Engines (lecture notes in Hungarian), Technical Books

and Notes Pub]., pp. 336, Budapest (1st edn 1918,2nd edn
1920).
~~zdustria~Heat Technology (lecture notes in Hungarian),
University Lectures and Notes Pub]., pp. 143, Budapest(1st edn 1950,2nd edn 1951).
Drying (monograph in Hungarian), Ministry of Mining andEnergy Publ., Budapest (1952).
New directions in the theory of drying (in Hungarian), Proc.
I st Hungarian Drying Conference, Budapest, Hungary(1952).
Approximating
methods for the determination of drying__
output of paper machines (in Hungarian), Papir- es
N~omdatech. (Paper Print. Technol.) 5, 196-201 (1953).
Theoretical proble&ofdrying:energiand heat recovery’(inHungarian), Magy. EnergGazd. (Hung. Econ. Energy) 7,413416 (19.54).
Economy of energy and its application to drying (inHungarian), Mt%%ktovcibbk~pz~ In&et (Postgraduate
Education in Engineering), pp. 39, Budapest (1954).
Scientific research, and directions of the light industry (inHungarian), Commun. Hung. Acad. Sci., Div. Engng Sci. 14,l-3 (1954).
On the selection of a boiler system during design (inHungarian), G$.&zeti Efrtesitii(Commun. mech. Engng) 10,
3-13 (1954).

Heat transfer during surface drying (in Hungarian), Papir- es
Nyomdatech. (Paper Print. Technol.) 7, 9-16 (1955).
Temperature curves on the drying parts of paper machines (inHungari~)~ Papir- es Nyo~atech.

(Paper Print. Technol.)7, 350-354 (1955).

Current state of the theory of drying (in Hungarian), Magy.
EnergGazd.

(Hung.

Econ.

Energy)8, 52-58,135-143(1955).
The technology of drying with particular attention to surface
drying (in Hungarian), M&rniiktovcibbkipzi IntCzet(Postgraduate Education in Engineering), pp. 52, Budapest(1955).
Charact~ristiquesde &hagedes diffkrentes @es.
Application I la fabrication du papier (with G. VBmos),
A.T.I.P. Bull. No. 4, 113-124 (1956).
Drying output of paper machines (in Hungarian), Papiripar(Paper Ind.) 2, 164-168 (1958).
Investigation of the drying capacity of paper machines (inHungarian), Energia Atomtech. (Energy nucl. Technol.) 11,517-522 (1958).
Temperature characteristics of convective drying (inHungarian), Paper Research Institute. pp. 26, Budapest(1959).
Basic thermodynamical and physico-chemical research in thepaper industry (with J. Bindis and Gy. Homonnay, inHungarian), Paper Research Institute, pp. 33, Budapest(1960).
Drying ofpulpy substances (in Hungarian), E’lelm.Ipar (FoodInd.) 14,274275 (1960).
Coeficients of eva~mtion (in Hungarian), Paper ResearchInstitute, pp. 33, Budapest (1960).
Theoretical and practical problems of the pulp and paperindustry (in Hungarian), Papiripar (Paper Ind.) 4, l-4(1960).
Principles of the economic design of hoods of paper machines(in Hungarian), Technical Institute of the Paper andPrinting Industry, pp. 35, Budapest (1960).
Heat and mass transfer conference in Minsk (in Hungarian),Papiripar (Paper fnd.) 11, 235-236 (1961).
Heat-and mass iransfer in the hygroscopic stage of drying (inRussian). TeDlo Massoaer. 4, 7-14 (1963).
Richtlinien fii; die wi&haftliche
Auswahl der Haubensysteme von Papiermachinen, Zel&off Pap., Bert. 7,260-264 (1960).
The State of Drying in Hungary (monograph in Hungarian),
Scientific Institute for the Economy of Energy, Vol. 1,pp, 182; Vol. 2, pp. 93, Budapest (1962).
Methodenzur Erhiihung der TrockenleistungvonPapiermaschinen, Proc. 4th Techn. Sci. Conf., Technischer
Verein der Papier- und Polygrufischen Industrie, Budapest,
pp. l-11 (1962).
Studies about the Fundamental Problems of Mass and Energy
Transfer (with I. Fenyes, monograph in Hungarian),

Scientific Institute for the Economy of Energy, pp. 152,
Budapest (1963).
The State of Drying in Four fndustr~a~ Areas (report inHungarian), Scientific Institute for the Economy ofEnergy, pp. 109, Budapest (1963).
Heat and mass transfer during the drying process of
hygroscopic materials, Acra t&h. Acad.~sci&f~ hung. 45,
225-241 (1964).
R. Mollier und das i-x Diagramm, Znt. J. Heat Mass Transfer
7, 15-22 (1964).
Drying Technology in fhe Paper Industry (monograph inHungarian), Documentation Centre of the National
Technical Library, pp. 187, Budapest (1965).
Fundamental
LawsofClassicalandIrreversible
Thermodynamics (monograph in Hungarian), ScientificInstitute for the Economy of Energy, pp. 53, Budapest(1965).
Recent investigations on the “hygroscopic field” of porous
materials (in Russian), Teplo Massoper. 5, 338-352 (1966).
W&me- und Stoffaustauschbei KonvektionsundProfessor Siindor Endrknyi on his 90th birthday
Kontakttrocknung, Chemie-lng. Tech. 38,892-893 (1966).
Some problems of heat and mass transfer processes ofsorptive materials, Proc. Semi-lnt. Symp., Tokyo, Japan,Vol. 1, pp. 269-275 (1967).
The possibilities of drying using geothermal water: atechnical and economical investigation(report inHungarian), Committee for National Technical Develop
ment, Budapest (1968).
A convective non-adiabatic drying process (in Russian),
Teplo Massoper. 6, 232-246 (1968).
The Theory of Spray-Drying and the New Direction ofDimensioning Equipments (monograph in Hungarian),

Scientific Institute for the Economy of Energy, pp. 109,
Budapest (1969).
Temperature course of porous-sorptive materials in theunsteady stage of drying, Proc. CHISA’69, MarianskeLane, Czechoslovakia, E410-428 (1969).
Review of the Hungarian economy of energy 20 years ago (inHungarian), Bull. Inst. Econ. Energy No. 2 (1969).
Desorption processes in molecular sieves, Inzh.-fiz. Zh. 19,476481 (1970).
The steam and heat technology of drying machines (inHungarian), MTA-Miisz. Tudotiny (Hung. Acad. Sci.,Engng Sci.) 43, 457-472 (1970).
The possibility of instruments based on fiber optics (report inHungarian), Committee for National Technical Develop
ment, Budapest (1970).
Simultaneous convection and diffusion in the drying processof porous materials of high sorptivity, Proc. 2nd Conf.
Appl. Phys. Chem., Budapest, Hungary, pp. 461-466(1971).
Desorption processes of porous-sorptive substances, Proc.
1st National Heat Mass Transfer Conf., Madras, India,Vol. 2, pp. 59-64 (1971).
Desorption processes of porous-sorptive substances in thedispersed phase, Proc. 3rd Conf. Drying, Budapest,
Hungary, No. A24, pp. l-9 (1971).
Interpretation of the Lewis law for a binary gas mixture along
the surface of porous materials (in Hungarian), Proc.
Annio. Conf. Res. Inst. Techn. Chem. Hung. Acad. Sci.,

Veszprim, Hungary, pp. 213-217 (1972).
Anleitungzur
Erweiterung
derAnwendung
psychrometrischer Methoden auf VerdunstungsvorgHnge
besonderer Art, Verfahrenstechnik 6, 63-67 (1972).
Die Verdunstung
einer Feststoff-Fliissigkeitsbindung
sorptiver Phase, Proc. 4th All-Union Heat Mass Transfer
ConJ, Minsk, U.S.S.R. (1972).
Desorption of porous, sorptive materials of dispersed phase(in Hungarian), Energia Atomtech. (Energy nucl. Technol.)

1455

Xi, 6162 (1973).
Mathematical modelling of the application of psychrometricmethods to surface phenomena of porous bodies atsimultaneous heat and mass transfer, Proc. 5th Int. Heat
Transfer Co& Tokyo, Japan, pp. 108-l 12 (1974).
Mathematical model for multicomponent spray drying (withB. PalBncz), Proc. CHISA’75, Prague, Czechoslovakia(1975).
Mathematical model for the combustion of coal in fluid bed(with B. PalBncz). In Future Energy Production Systems,Heat and Mass Transfer Processes, Vol. 2, pp. 579-587.
Academic Press, New York (1976).
Equilibrium problems of steady evaporation of porous
surfaces (with B. PalLncz), Proc. 5th All-Union Heat
Transfer Conf., Minsk, U.S.S.R. (1976).
Calculation of transport coefficients during the falling rate ofdrying (with B. Szentivinyi), Proc. 5th All-Union HeatTransfer Co&. Minsk. U.S.S.R. (1976).
Injectioh effect”& multicbmponent bounhary layer (with B.
Pallncz),Int.J. Heat Mass Transfer 18, 1117-1120 (1976).
Numerical evaluation of transfer coefficients for the drying
processes of porous bodies during the falling rate period(with D. Szentivinyi), Proc. 1st Drying Conf.. Montreal,
Canada, pp. 48-5 1 (1978).
Mathematical modelling of heat and mass transfer processesof drying, porous materials with sorptive properties, Proc.
fst Drying Con&, Montreal, Canada (1978).
Effect of the stochastic perturbation on the heat and masstransfer process (with B. PalLncz), Proc. 6th Int. Heat
Transfer Cot& Toronto, Canada, pp. 359-369 (1978).
Non-steady state surface evaporation from porous bodies
with non-uniform pore distribution, Proc. 2nd lnt. Symp.
Drying, Montreal, Canada, Vol. 1 (1980).
Surface phenomena of porous capillary bodies with nonuniform and uniform pore distribution during heat andmass transfer processes, Proc. Phys.-Chem. Hydrodyn.
Conf., Madrid, Spain (1980).
Contribution to the theory of surface phenomena of porous
bodies occurring due to heat and mass transfer processes,
Int. J. Heat Mass Transfer 25, 1457-1460 (1982).
Surface phenomena of porous, capillary bodies, Proc. 7th Int.
Heat Transfer Conf., Munich, F.R.G., pp. 57-59 (1982).
Surface evaporation on capillary-porous bodies, Pr&.
CHISA’84. Prague. Czechoslovakia C19841.
Contribution to t-he iheory of sorption isdtherms, Phys.Chem. Hydrodynam. 6,691-698 (1985).
Evaporation and condensation phenomena of capillaryporous bodies, Proc. 7th Int. Heat Transfer CoqJ, San
Francisco, U.S.A. (1986).