PROGRES DANS LA SCIENCE ET LA TECHNIQUE DU FROIDPROGRESS IN REFRIGERATION SCIENCE AND TECHNOLOGY

7V" 7T

LE FROID AU SERVICE DE L'HOMME

XVIe CONGRES INTERNATIONAL DU FROID

Comptes rendus

XVIth INTERNATIONAL CONGRESS OF REFRIGERATION

Proceedings

fUNIVERSITATSBI8UOTHEK

HANNOVER

TECHNISCHEINFORMATIONSBiBUOTHEK

.

TOME II

Edité par

L'ASSOCIATION POUR LE CONGRES INTERNATIONAL DU FROID

DE PARIS 1983

pour

L'INSTITUT INTERNATIONAL DU FROID

177, bd Malesherbes, F75017 Paris, FRANCE

fro?"x

COMMISSION Bl' '' w é"%

Thermodynamique, processus de transport

Thermodynamics and transport processes

Propriétés thermodynamiques et de transport des corps purset des mélanges

Thermodynamic and transport properties of pure substancesand mixtures

N. HASEGAWA, S. WADA, M. UEMATSU, K. WATANABE (Japan). PVT

measurements of refrigerant 114 (Bl-224) 5

K. OGUCHI, Y. TAKAISHI, I. TANISHITA (Japan). Experimental study of

pressure-volume-temperature relationships for dichlorodifluoromethane (R 12),(Bl-306) 11

M. OKADA, M. UEMATSU, K. WATANABE (Japan). Measurements ofsaturated liquid density for several refrigerants. (B1-223) 17

Y. HIGASHI, M. UEMATSU, K. WATANABE (Japan). Direct determinationof the critical parameters for several refrigerants. (B1-225) 25

Y. TAKAISHI, N. KAGAWA (Japan). Correlation of PVTx Properties forR 12 + R 22 mixtures in gaseous state.(Bl-l91) 31

M. KUVER, M. SCHROEDER, H. KRUSE (F.R.G.). Measurement and cal¬culation of p-v-T-x data of the binary mixture R 12/R 114.(B 1-442) .... 37

P.D. IEDEMA, C.H.M. MACHIELSEN (The Netherlands). Fundamental

equations for the free enthalpy of LiBr and /or ZnBr2 solutions in methanol.(Bl-340) 45

M.S. DAS, R.S. AGARWAL, C.P. ARORA (India). Enthalpy-compositiondiagram for R22-DEF absorption refrigeration system. (Bl-267) 55

B. BERTHE (France). Relations entre la structure et les propriétés des chloro-

fluoro-alcanes. (Bl-176) 63

I. YARON, M. JELINEK, I. BORDE (Israel). Thermodynamic properties of

refrigerant — absorbent combinations for absorption processes by the UNIFAC

group — contribution theory. (B1-305) 71

R. DURING (F.R.G.). Transport properties of refrigerant 12. (Bl-380) ..79

C. BARONCINI, P. DI FILIPPO, G. LATINI (Italy). Viscosity of the liquidrefrigerants: an improved correlation. (Bl-123) 89

A. ALLOUSH, W.B. GOSNEY, W.A. WAKEHAM (U.K.). Thermal conduc¬

tivity of some salts solutions by the transient hot wire method. (B1-350) . . 95

D.A. KOUREMENOS, B.A. HATJIANDREOU (Greece). Thermodynamicand transport properties of NH3-H2 mixtures at 25 bar. (B1-556) 101

Hydrodynamique-transfert de masse et de chaleur dans les

corps purs et les mélanges

Hydrodynamics-heat and mass transfer in pure substances and

mixtures

T. KASHIWAGI, Y. KUROSAKI, I. NIKAI, H. SHISHIDO (Japan), A studyof steam absorption into the aqueous solution of LiBr using holographic inter-

ferometry. (Bl-187) Ill

VII

C'.A. INFANTE FERREIRA (The Netherlands). Vertical tubular bubble absor¬

bers for ammonia — lithium nitrate absorption refrigeration systems

(Bl-127) U1-1

E. HIHARA, S. SAITO, T. MORITA, T. SAITO (Japan). Modelling of fluc¬

tuations of two-phase flow in a horizontal tube (slug flow transition).(Bl-400) 127

E. SANDRU (Romania). Some aspects concerning the influence of the flow

pattern on the evaporation inside horizontal tubes. (B1-518) 133

D. STEINER (F.R.G.). Flow boiling heat transfer for refrigerants and cryoge¬

nic fluids inside tubes. (Bl-610) 139

V. KOSTYUK, I. BERLIN, N. BORISOV, E. KALININ (U.S.S.R.). Transi¬

tion boiling heat transfer in cryogenic liquids. Theory and experiments.(Bl-368) 147

H.E. ALPAY (Turkey), D. GOIJENFLO (F.R.G.). Burnout heal transfer to

SF6/R13B1 — mixtures at near — critical saturation pressures. (Bl-596) . .155

E. HAHNE, J. MÛLLER (F.R.G.). Boiling from finned tube bundles - the

effect of enhanced convection. (B1 -330) 163

Y. KOYAMA, K. HASHIZUME (Japan). Boiling heat transfer on outside of

horizontal tube bundles. (Bl-23) 171

A. MALEK, R, COLIN (France), Évaporateurs avec turbulisateurs internes.

(B1-490) 179

E. BRENDENG (Norway). Influence of internal turbulators on heat transfer in

evaporator tubes. (Bl-459) 183

C. ELLE, S. NOWOTNY (G.D.R.). Heat transfer during the boiling of fallingfilms — some considerations about the application of the falling film techniquein evaporation. (Bl-365) 189

B. BLAGOJEVIC, M. NOVAKOVIC (Yugoslavia). Boiling heat transfer of

refrigerant 113 from composite surface. (B1-285) 197

A. MALEK (France). Influence de la présence d'huile dans le fluide frigorigènesur le transfert de chaleur à l'évaporalion dans un tube horizontal, (B 1-489) 203

H. AURACHER, M. MAIER (F.R.G.). Vapor bubble condensation in slightlysubcoolcd pure liquids. (B1-2921 207

F. GIOVANNONI, L. MATTAROLO (Italy). Experimental researches on the

finned tube heat exchangers with corrugated fins. (B1-493) 215

A. POREDOS, B. GAgPERSiC (Yugoslavia). Influence of geometrical para¬meters on heal, mass and momentum transport coefficients in dchumidifyingfinned heat exchangers. (Bl-179) 221

LU SHI-XUN (China). Research on the air cooling and the evaporation-aircooling condensers and their experiment at high atmospheric temperature.(Bl-515) 227

Fluides frigorigènes pour machines frigorigiques'et pompes àchaleur

Working fluids for refrigerating and heat pumps systems

K. UNTERLEUTNER, H. HUEMER, F, MOSER (Austria). Search for opti¬mal working fluids in high temperature heat-pumps. (Bl-481) 235

VIII

M. FELLI, G. GALLI (Italy). The degrees of freedom of absorption systems.

(Bl-477) 245

I. BORDE, I. YARON, M. JELINEK (Israel). Cycle analysis of refrigerationand heat pumping absorption systems utilizing low grade energy with some new

working fluids. (Bl-349) 253

W. PETRIN, H. SCHNITZER, F. MOSER (Austria). The maximum COP of

individual working fluids in absorption heat pumps. (B1-484) 261

C.O.B. CAREY, J.S. KHAHRA, I.E. SMITH (U.K.). The sodium-hydroxidewater absorption heat pump. (B1-326) 269

M. FELLI, G. GALLI (Italy). The absorption cycle on a new P-h chart of

aqua-ammonia. (Bl-478) 275

H. BOKELMANN, M. RENZ, F. STEIMLE (F.R.G.). Working fluids for low

pressure absorption systems. (B1-643) 281

HJ. EHMKE, M. RENZ (F.R.G.). Ternary working fluids for absorption sys¬

tems with salt-liquid-mixtures as absorbent. (B1-642) 289

X.Y. ZHANG, B. YU-CHI (China), Utilizing low temperature hot water as

heat source of two-stage LiBr absorption refrigeration. (B1-20) 297

Cycles pour mélanges non azéotropiques de réfrigérants

Cycles for non azeotropic mixtures

H.B. VAKIL (U.S.A.). Thermodynamics of heat exchange in refritv-ialion cy¬

cles with non-azeotropic mixtures. Part I: Heat Exchange in Condenser and

Evaporator. (Bl-629) 305

H.B. VAKIL (U.S.A.). Thermodynamics of heat exchange in refrigeration cy¬

cles with non-azeotropic mixtures. Part II: Suctionline Heat Exchange and Eva¬

porative Cooling of Capillary. (Bl-630) 311

C. GARCIA, J. DALIGAULT, M. DUMINIL (France). Élude des transferts

thermiques dans une pompe de chaleur utilisant les mélanges non azéotropiquesR12-R114. (Bl-587) 317

C. GARCIA, J, DALIGAULT, M. DUMINIL (France). Étude expérimentale

de cycles frigorifiques et de pompes de chaleur utilisant les mélanges non azéo¬

tropiques de R 12 et de R 114. (Bl-588) 323

S. VERNEY, M. AUBOURG (France), Cycles à mélanges non azéotropes

appliqués aux réfrigérateurs à deux températures. (Bl-221) 331

Fluides et cycles des machines frigorifiques solaires

Fluids and cycles for solar refrigeration

A, ALLOUSH, W.B. GOSNEY (U.K.). An absorption system using methanol

plus lithium and zinc bromides for refrigeration using solar heat. (Bl-159) . 339

A. DE LIETO VOLLARO, M. FELLI (Italy). Chemical heat pumps with solid

absorbents: Thermodynamic fundamentals and a survey of used substances.

(Bl-479)347

Ph. GRENIER, J.J, GUILLEMINOT, I. ISMAIL, M. PONS (France). Étude

comparative des cycles intermittents utilisant soit le couple zéolithe-eau soit le

couple charbon actif — methanol. (Bl-213) 353

IX

I. ISMAIL, F. MEUNIER, B. BRANDON, J. MERIGOUX (France). Pompe à

chaleur chimique utilisant le cycle pseudo-continu /éolithe HjO: Résultats expé¬

rimentaux et simulation numérique. (B 1-212) 363

N.-E. CLAUSEN, P. WORS0E-SCHMIDT (Denmark). Solar absorption re¬

frigeration utilizing suspended solid absorbents, (Bl-461) 373

J.C. CHAMPOUSSIN, G. HOSTACHE (France). Performances d'un système

tritherme a éjeetcur à basse température de bouilleur, (B 1-182) 381

P. GANDH1DASAN (Trinidad). Heat and mass transfer analysis of a desic-

cant layer flowing over a roof. (Bl-10) 389

Corrélation et simulation des processus de transfert de chaleur

et de masse

Correlation and simulation of heat and mass transfer proces¬

ses

F.J. CUESTA-BENITO (Spain). Application of a new dimensional model for

turbulent flow in pipes. (Bl-19) 399

N.K. ANAND, S.C. CHEN, D.R. TREE (U.S.A.). A numerical solution to the

transient laminar convective heat transfer inside a circular duct. (B1-107) .405

Cj.S. ILlC" (Yugoslavia). An add for indication of secondary How presence in

turbulent heat transfer through eccentric annular passage. (B1-230) 413

H. SOUMERAI (U.S.A.). A unified thermodynamic theory of heat, mass and

momentum exchange, A. Single-phase forced convection in smooth tubes. (Ul-

491) ,419

H. SOUMERAI (U.S.A.). A unified thermodynamic theory of heat, mass and

momentum exchange. B-Extcnsions beyond the "current state of the art". (Bl-

283) 425

J. RENAR, B, GASPERS!? (Yugoslavia). Investigation of evaporative cooler

by numerical mathematical model, (Bl-180) 433

R.C. SIMONET (France). Diagrammes cnlhalpiques et calcul clos échangeursde chaleur. (Bl-641) 441

P.J. CIESLINSKl, T. BES (Poland). Analytical heat transfer studies in u spiralplate heal exchanger. (B1-198) 449

M.D. MIKHAILOV, Ts.D. TSVETKOV (Bulgaria). 'Basic' Program for net¬

work analysis (B1-318) 455

Propriétés thermophysiques des denrées alimentaires et pro¬

duits biologiques

Thermophysical properties of foodstuffs and biological pro¬ducts

A.G. F1KIIN (Bulgarie). Nouveaux nomogrammes pour la détermination gra¬phique des paramètres du refroidissement des produits alimentaires (corps soli¬

des). (Bl-555) 463

S.J. JAMES, M.J. SWAIN (U.K.), The effect of surface fat layers on the chil¬

ling time of meat. (B 1-452) 473

X

F. FERNANDEZ-MARTIN, F. JIMENEZ COLMENERO, J.C. GORRIZ(Spain). Melting and solidification of the fat phase of mechanically debonedmeat. (B1-268) 479

B. DJAKOVIC, B. JACTMQVlC, S. RISTlC, G. SORAK (Yugoslavia). Heatfluxes and optimal thicknesses of wall insulation of incubation chambers of thedairies. (B1-284) 485

Transfert de chaleur et de masse dans les matériaux poreux etpendant la formation et la fusion de la glace

Heat and mass transfer in porous media and during water

freezing and melting

C. COUPIAC (France). Le refroidissement des composants du béton.

(Bl-578) 493

L.F. RORIZ (Portugal). A regular regime method for use in the determination

of thermal properties of porous solids. (B1-280) 501

L.F. RORIZ (Portugal). The use of transient methods in the determination ofthermal properties of solids. (B1-281) 507

L.F. RORIZ (Portugal). An experimental apparatus for the determination ofthermal properties of porous solids. (B1-282) 513

J. HAVELKA, P. VYKYDAL (Tchécoslovaquie). La sorption d'humidité pen¬dant conservation par le froid. (Bl-553) 519

F. GORI (Italy). Prediction of effective thermal conductivity of two phasesmedia (including saturated soils). (Bl-26) 525

D.L O'NEAL, D.R. TREE (U.S.A.). Experimental measurement of frost thick¬

ness on a flat plate. (Bl-108) 533

D.P. SEKULIC (Yugoslavia). Heat and mass transfer to cryogenically cooled

surface under frosting conditions — A survey of research efforts and analysis-frosting of air coolers. Part II. (Bl-231) 541

Z. GRUDA (Poland). Investigations ofthe fluidized bed freezing process ofthe

large food particles. (B1-236) 551

Z. GRUDA (Poland). Heat transfer between the gas and solid particles in flui¬

dized bed freezing or foodstuffs. (Bl-235) 559

G. LAMBRINOS, J. AGUIRRE-PUENTE (France). Déshydratation des mi¬

lieux dispersés congelés - influence des conditions d'entreposage sur les pertes de

masse. (Bl-204) 567

M. GIAT, J. AGUIRRE-PUENTE, P. VILLETARD DE LAGUERIE, W.

LUYTEN (France), Étude numérique thermique autour d'une cavité souterrai¬

ne de stockage cryogénique. Confrontation avec les mesures en station pilote,

(Bl-202) 575

E. KALINOWSKI, H. KUDELA, G. LANGE (Poland). Numerical modellingof the rock-freezing problem. (B1-401) 581

D. MARCHAL (France), J. PESSOA (Portugal). Simulation rapide des trans¬

ferts de chaleur et du gel dans le sol au voisinage d'un échangeur enterré. (Bl-

122) 587

A.M. CAMES-PINTAUX, M. GIAT, J. AGUIRRE-PUENTE (France). Intro¬

duction de nouvelles geometries et conditions aux limites dans la méthode de

Goodrich pour le changement de phase, (B 1-203) 595

XI

J.M, BRISSON LOPES (Portugal). Application of the cxpimp method to phasechange problems in orthogonal curvilinear coordinates. (Bl-143) 603

J. KUNIS. F.-M. BARTH, S. NOWOTNY (G.D.R.). A new interactive me¬

thod of finite differences for the calculation of freezing processes. (BI-138) . 611

Mesure et analyse des matériaux isolants

Measurement and analysis of the properties of thermal insu-

lants

F.J. POWELL (U.S.A.). National bureau ofstandards line-heat-sourcc guardedhot plate for thermal conductivity of thick thermal insulation materials. (Bl-

379) 619

D, FOURNIER, F. DE PONTE (France/Italie). Orientations prises dans la

mise au point de méthodes d'essais normalisées par l'I.S.O. pour la mesure des

propriétés de transfert thermique en régime stationnaire sur les matériaux iso¬

lants; historique et structure. (B 1-590) 629

F. DE PONTE, D. FOURNIER (Italy/France). Tendencies in developing ISOstandards for the determination of steady state thermal transmission propertiesof insulating materials: technical background. (B1-I590) 637

R. BOETES, C.J. IIOOGENDOORN, H. VAN OOI.IEN (the Nether¬

lands). Effects of thermal radiation on the conductivity of foam materials mea¬

sured by an absolute heat flux meter method. (Bl-139) 643

G. MILANO, Cf, REALE (Italy). On the evaluation of the overall heat-transfer

coefficient for thin sandwich type walls with thermal bridges. A comparisonbetween available correlations, numerical predictions and some experimentalresults, (Bl-363) 649

E, BRENDENG (Norway). Measurements on evacuated insulants with exter¬

nal load. (Bl-42) 657

F, GONZALEZ, J.A. CARRASCO, M. DOMINGUEZ, S. GARCIA DE VI-

NUESA (Espagne). Relation entre les propriétés thermiques, mécaniques et

morphologiques des isolants cellulaires. (B1-371) 663

C. LANGLAIS, E. ARQUIS (France). Étude d'un système d'isolation dynami¬que. (Bl-650) 669

M. DEGENNE, J. BOULANT, S. KLARSFELD (France). Mesures des carac¬

téristiques thermiques des isolants, à basses températures, à l'aide d'une métho¬de fluxmétrique. (Bl-655) 677

XII

COMMISSION B2

Machines frigorifiquesRefrigerating machinery

Amélioration des petites machines frigorifiques, réfrigéra¬teurs, congélateurs et meubles frigorifiques commerciaux

Improvements of small refrigerating machines, refrigerators,freezers and display cabinets

L.J.M. KUIJPERS, M.J.P. JANSSEN (The Netherlands). Influence of thermalnon-equilibrium on capillary tube mass flow. (B2-133) 689

K. MACZEK, Z. KROLICKI, E. SOCHANECKA (Poland). Model of throt¬tling capillary tube with metastable process. (B2-100) 699

M.B. PATE, D.R. TREE (U.S.A.). An experimental analysis of a capillarytube-suction line heat exchanger. (B2-109) 709

J. EICHLER, K. MACZEK (Poland). New performances of household absorp¬tion refrigerators for the use of design. (B2-454) 717

C.G. ALMEN (Brazil). Evaporator heat transfer in platen-muntcrs absorptionunits. (B2-632) 723

J. YOUNG, G.A.A.S. MAKIYA (U.K.). Thermal behaviour of a diffusion-absorption refrigerator. (B2-166) 729

P. ALRIC, C. MUCKENSTURM (France). Le contrôle en France des tempé¬ratures des denrées surgelées dans les meubles de vente. (B2-589) 737

S. HOTANI, T. MIHORI (Japan), A simple method to improve the perfor¬mance of the open display cabinets through prevention ofradiant heat and roomair movements. (B2-332) 745

KAZUYUKI SAIGUSA, NORIO YAMASHITA, FUMIAKI KOMATSU

(Japan). Energy saving control for refrigerating display cabinets. (B2.310) .751

Amélioration des petites machines frigorifiques : fiabilité-sécurité

Improvements of small refrigerating machines: reliability-safety problems

C. CALTCHEV, S. KOVATCHEV, H. GORANOVA (Bulgarie). Analyse ma¬

thématique de l'influence de certaines conditions aléatoires sur la fiabilité et la

durée de vie des compresseurs frigorifiques semi-hermétiques. (B2-496) . . . 759

S.M. MINER, (U.S.A.). Refrigerant safety - some observations and current

standards. (B2-092) 765

H.O. SPAUSCHUS (U.S.A.). Monitor for vapor compression refrigeration sys¬tems. (B2-293) 773

XIII

Amélioration des grandes machines — simulation mathéma¬

tique et optimisation

Improvement of large machines — mathematical modellingand optimization

F. GALIAN (France). Optimisation avec calcul du COP en permanence grâceau «Pandore» d'une pompe à chaleur à trois étages, de 6 000kW thermiques

pour le séchage de malt. (B2-261) 783

C. WERLER (France). Nouvelle méthode originale de régulation et de gestionénergétique d'entrepôts frigorifiques ou d'abattoirs grâce au micro-ordinateur

«Pandore». (B2-262) 789

J. KISS, L. FODOR (Hungary). Efficiency increase at evaporative condensers.

(B2-460) 795

E.H. NG, A.B. TRAMSCHEK, J.F.T. MACLAREN (U.K.). Mathematical

modelling of a multi-cylinder refrigeration compressor using Helmholtz resona¬

tor and acoustic wave techniques. (B2-167) 801

N. ISHII, K. IMAICHI, S. MURAMATSU, M. FUKUSHIMA (Japan). A

computer simulation of higher frequency vibrations of a reciprocating compres¬sor. (B2-565) 811

W. DEMPSTER, A.B. TRAMSCHEK, J.F.T, MACLAREN (U.K.). Optimiza¬tion of a refrigeration compressor valve design using a modified 'complex'method. (B2-402) 817

WU YEZHENG (China), J.F. HAMILTON, R. COHEN (U.S.A.). Analysis ofa refrigerant mixing vessel for a compressor load system. (B2-110) . , , . . 825

S. NOWOTNY (G.D.R.). Long-term experiences with the application of ma¬

thematical models to analyze the steady-slate and dynamic behaviour of refri¬

gerating systems and-«omponcnls — general aspects to establish a catalogue of

computer programs. (B2-366) 835

A. BONTE, B.v. VELDHOVEN (The Netherlands). Dynamic behaviour of a

refrigerating plant. (B2-2I4) 845

N. TOYODA, K. WATANABE (Japan). Microcomputer control of refrigerantflow in evaporator. (B2-160) 853

W.V. RICHARDS (U.S.A.). Refrigerant vapor line sizing not dependent on

length. (B2-644) 861

F. SMUTNY (Czechoslovakia). Designing of air coolers using a new calcula¬tion procedure, comparison with measurements. (B2-273) 869

Optimisation des systèmes frigorifiquesOptimization problems

V.S. IVANOVA, T.S. GATCHILOV (Bulgaria). Analysis of air-coolers perfor¬mance at frost formation conditions. (B2-494) 877

J. SZARGUT, K. MACZEK (Poland). Thermo-economic estimation of theoptimum exergetic efficiency of refrigeration systems. (B2-002) 885

T.S. GATCHILOV, V.S. IVANOVA (Bulgaria). Finned air coolers at naturalconvection dimensioning method. (B2-495) 891

A. PATIN, J. DEFUDE, J. PATRY (France). Conditionnements thermiquespar fluide intermédiaire et accumulation d'énergie latente. (B2-503) . . , ,

897

XIV

H.B. VAKIL (U.S.A.), New concepts in capacity modulation using non-azeo¬

tropic mixtures. (B2-535) 905

MIAO DAO-PING, WU ZHI-MING (China). Effect of liquid subcooling and

state of vapour leaving the calorimeter on accuracy of compressor refrigeratingcapacity measurement. (B2-053) 913

S. NOWOTNY (G.D.R.). Some considerations concerning the optimum ope¬

rating conditions of refrigerating machinery especially those of absorption ma¬

chines by using the cxergy concept. (B2-039) 919

J. LARUE (France). Nouveaux développements du cycle frigorifique à demix-

tion. (B2-386) 929

M. MIECZYNSKI (Poland). Coefficient of performance of absorption refrige¬rating systems. (B2-549) 937

A. ZÔLTANIECKI, K. MACZEK (Poland). The influence of thermo-isolation

of thermosiphon pump on the desorption processes. (B2-348) 945

G. ALEFELD (F.R.G.). Double effect, triple effect and quadruple effect ab¬

sorption machines. (B2-158) 951

A. ADELL (Côte d'Ivoire). Optimisation du fonctionnement des systèmes de

réfrigération solaire à adsorption. (B2-255) 957

Conception des compresseurs, échangeurs et cycles pour les

pompes à chaleur

Design of compressors, heat exchangers and cycles for heat

pumps

A.V. BYKOV, G.A. KANNYSHEV (U.S.S.R.). Improvemenl on design and

characteristics of large screw refrigerant compressors. (B2-186) 967

A. KUMAR, G.F. HUNDY, B.R. REASON (U.K.). Pressure and temperature

measurements in a single screw compressor. (B2-099) 975

C.Y. CHAN, G.G. HASELDEN (U.K.). Modelling the compression process in

the hallscrcw compressor. (B2-430) 983

P.O. SZYMASZEK, S.M. MINER (U.S.A.). Advancements in screw compres¬

sor oil cooling systems — analyzed and compared. (B2-091) 993

F. GALIAN (France). L'huile des compresseurs à pistons ou vis peut être

refroidie autrement que par un échangeur. Un système nouveau breveté par

injection de fluide frigorigène est décrit avec ses résultats d'essais. (B2-287) .1001

B. ZIMMERN (France). Compresseur monovis avec et sans injection d'huile:

comparaison dans le domaine des pompes de chaleur. (B2-125) 1005

J.E. McCULLOUGH (U.S.A.). Scroll compressors for air conditioning sys¬

tems. (B2-134)1011

Z. CEJKA (Czechoslovakia). Practical verification of calculation of an air

cooled condenser. (B2-195) 1019

ZHANG CHANGLIN, YU YONGZHANG, YANG SHAOKAN (Chi¬

na). The effect of discharge cavity on energy consumption in reciprocating

compressor (B2-509) ,

1025

SHIGEMI NAGATOMO, HIROSHI TAMURA (Japan). A new method for

measuring the compressor performance of refrigerators. (B2-342) 1031

XV

MICHIMASA HORI, JIRO YUDA, TAKASHI AIZAWA, MICHIO YAMA-

MURA (Japan). Capacity control of rotary compressors by cylinder bypass.(B2-097) 1037

J.S. FLEMING, J. BROWN (U.K.). P.C. SHU (China). The influence of oil

sliction on compressor valve performance. (B2-164) 1045

P.C. SHU (China), J.S. FLEMING, J. BROWN (U.K.). The effect of valve gasforces on compressor behaviour. (B2-093) 1051

E. GRANRYD (Sweden). Liquid-refrigerant heat exchangers designed for

laminar flow. (B2-168) 1059

H.T. HAUKÂS (Norway). Calculation of gravity fed evaporators. (B2-259) 1067

Y. ARAGOU (France). Évaporateur à effet de capillarité interne: givrage, sur¬

face et débit d'air réduits. (B2-217) 1075

W.F. STOECKER (U.S.A.). Selecting the size of pipes carrying hot gas to

defrost evaporators. (B2-545) 1083

H. REMEDIOS CARBAJALES, J.A. ALONSO GONZALEZ (Cuba). Re¬

search on some modern ways of constructing air-cooled condensers for Cuban

conditions. (B2-399) 1093

B. DEGUEURCE, F. BANQUET, E. KALLMANN (France). Emploi d'un

économiseur avec un compresseur monovis à débit variable pour le chauffagepar pompe à chaleur dans le secteur tertiaire et l'habitat collectif. (B2-175) .

1097

S. D1CHEV, G. KARTELOV, D. LECHEV (Bulgaria). Increasing the efficien¬cy of compressor heat pumps by obtaining multizone condensation. (B2-328) 1105

F. CHIRIAC, E. SANDRU (Romania). Some aspects concerning heat transferin the accumulator heat exchangers with a view to energy saving. (B2-519) .

1111

P.W. FITT (U.K.). Analysis of a triple-rotor direct-fired air cycle heat pump.(B2-090) 1119

TABLE RONDE

ROUND TABLE DISCUSSION

La question de la couche d'ozone - des considérations hypo¬thétiques à un jugement raisonnableOzone layer issue — from hypothesis to a rational judgment

Introduction du Président C.W. PHILLIPS/Introduction by President C.W.PHTLLIPS

H27

G. DIPROSE (U.K.). The possible role ofchlorofluorocarbons in ozone deple¬tion. (B1-594) U29

F. NOUYRIGAT (France). Chlorofluorocarbures et qualité de la vie.(B2-654) •

1135

J. VON SCHWEINICHEN (Italy). The ozone issue in the European EconomieCommunity: past and present guidelines - the future outlook. (Bl-667) . . 1145

K. ACKROYD (U.K.). The commission of the European communities' codeof good practice for the reduction of emissions of cholorofluorocarbons (CFCs)R 11 and R 12 in refrigeration and air conditioning applications. (BI-595) . 1153

XVI

R.T. WATSON (U.S.A.). Science of the ozone depletion theory — Current

status. (Bl-677) 1159

EPA (U.S.A.). — Annual report 1983 on the progress of regulation to protect

stratospheric ozone, (B1-678) 1163

Discussion générale /General Discussion . . . 1167

XVII