IMPROVING HEAT TRANSFER IN STEAM-HEATED FAST ROTATING PAPER DRYING DRUMS = AMELIORATION DU TRANSFERT DE CHALEUR DANS LES TAMBOURS DE SECHAGE DE PAPIER, CHAUFFES A LA VAPEUR ET A ROTATION RAPIDEROETZEL W.1975; INTERNATION. J. HEAT MASS TRANSFER; G.B.; DA. 1975; VOL. 18; NO 1; PP. 79-86; ABS. FR. ALLEM. RUSSE; BIBL. 9 REF.Article

VERRINGERUNG DES LUEFTUNGSWAERMEBEDARFS BEI NATUERLICHER LUEFTUNG VON GEBAEUDEN DURCH VERWENDUNG LUFTDURCHLAESSIGER POROESER AUSSENWAENDE = REDUCING VENTILATION HEAT REQUIREMENTS IN NATURAL VENTILATION OF BUILDINGS THROUGH THE USE OF POROUS EXTERNAL WALL = REDUCTION DES PERTES DE CHALEUR PAR VENTILATION NATURELLE DE BATIMENTS PAR L'EMPLOI DE MURS EXTERIEURS PERMEABLES A L'AIRROETZEL W.1981; HLH, HEIZ. LUEFT./KLIMATECH. HAUSTECH.; ISSN 0017-9906; DEU; DA. 1981; VOL. 32; NO 2; PP. 45-48; ABS. ENG; BIBL. 4 REF.Article

LAMINAR FILM SURFACE EVAPORATION WITH UNIFORM HEAT FLUX IN A FAST ROTATING DRUM.ROETZEL W.1977; INTERNATION. J. HEAT MASS TRANSFER; G.B.; DA. 1977; VOL. 20; NO 5; PP. 549-553; ABS. FR. ALLEM. RUSSE; BIBL. 8 REF.Article

NAEHERUNGSVERFAHREN ZUR BERECHNUNG VON KONDENSATOREN FUER DAMPFGEMISCHE. = METHODE APPROCHEE POUR CALCULER LES CONDENSEURS A MELANGEROETZEL W.1975; WAERME- U. STOFFUEBERTRAG; DTSCH.; DA. 1975; VOL. 8; NO 3; PP. 211-218; ABS. ANGL.; BIBL. 16 REF.Article

ITERATION-FREE CALCULATION OF HEAT TRANSFER COEFFICIENTS IN HEAT EXCHANGERS.ROETZEL W.1977; CHEM. ENGNG J.; G.B.; DA. 1977; VOL. 13; NO 3; PP. 233-237; BIBL. 7 REF.Article

HEAT EXCHANGER DESIGN WITH VARIABLE TRANSFER COEFFICIENTS FOR CROSSFLOW AND MIXED FLOW ARRANGEMENTS = CALCUL D'UN ECHANGEUR DE CHALEUR A COEFFICIENTS DE TRANSFERT VARIABLE POUR DES DISPOSITIONS AVEC ECOULEMENT CROISE ET AVEC ECOULEMENT MIXTEROETZEL W.1974; IN: CONF. HEAT TRANSFER DES. OPER. HEAT EXCH.; JOHANNESBURG; 1974; JOHANNESBURG; UNIV. WITWATERSRAND; DA. 1974; PP. (43 P.); BIBL. 17 REF.Conference Paper

UNIFORM HEAT FLUX IN A PAPER DRYING DRUM WITH A NON-CYLINDRICAL CONDENSATION SURFACE OPERATING UNDER RIMMING CONDITIONS = FLUX THERMIQUE UNIFORME DANS UN TAMBOUR DE SECHAGE DE PAPIER AVEC UNE SURFACE DE CONDENSATION NON CYLINDRIQUEROETZEL W; NEWMAN M.1975; INTERNATION. J. HEAT MASS TRANSFER; G.B.; DA. 1975; VOL. 18; NO 4; PP. 553-557; BIBL. 4 REF.Article

Measurement of heat transfer coefficients in tubes by temperature oscillation analysisROETZEL, W.Chemical engineering & technology. 1989, Vol 12, Num 6, pp 379-387, issn 0930-7516Conference Paper

Thermische Berechnung von dreigängigen Rohrbündelwärmeübertragern mit zwei Gegenstromdurchgängen gleicher Grösse = Calcul thermique d'un échangeur de chaleur à trois passages avec deux écoulements à contre-courant identiques = Thermal design of tree-pass shell- and-tube heat echanger with two counter-flow passes of equal sizeROETZEL, W.Wärme- und Stoffübertragung. 1988, Vol 22, Num 1-2, pp 3-11, issn 0042-9929Article

SCHNELLE BERECHNUNG DER MITTLEREN TEMPERATURDIFFERENZ IN LUFTGEKUEHLTEN KREUZSTROMWAERMEAUSTAUSCHERN = FAST CALCULATION OF MEAN TEMPERATURE DIFFERENCE IN AIR-COOLED CROSS-FLOW HEAT EXCHANGERSROETZEL W; FUERST J.1980; WAERME STOFFUEBERTRAG.; DEU; DA. 1980-08-15; VOL. 14; NO 2; PP. 131-136; BIBL. 8 REF.Article

SCHNELLE BERECHNUNG DER MITTLEREN TEMPERATURDIFFERENZ IN LUFTGEKUEHLTEN KREUZSTROMWAERMEAUSTAUSCHERN = FAST CALCULATION OF MEAN TEMPERATURE DIFFERENCE IN AIR-COOLED CROSS-FLOW HEAT EXCHANGERS = CALCUL RAPIDE DE LA DIFFERENCE MOYENNE DES TEMPERATURES DANS LES ECHANGEURS DE CHALEUR A ECOULEMENT CROISE REFROIDIS PAR AIRROETZEL W; FUERST J.1980; WAERME- U. STOFFUEBERTRAG; DEU; DA. 1980; VOL. 14; NO 2; PP. 131-136; ABS. ENG; BIBL. 8 REF.Article

MEAN TEMPERATURE DIFFERENCE FOR HEAT EXCHANGER DESIGN - A GENERAL APPROXIMATE EXPLICIT EQUATION.ROETZEL W; NICOLE FJL.1975; J HEAT TRANSFER; U.S.A.; DA. 1975; VOL. 97; NO 1; PP. 5-8; BIBL. 19 REF.Article

REAKTIONSKALORIMETER UND REAKTIONSRUEHRBEHAELTER MIT VERBESSERTEM WAERMEDURCHGANGSKOEFFIZIENTEN = A REACTION CALORIMETER AND AN AGITATED REACTION VESSEL WITH IMPROVED HEAT TRANSFER COEFFICIENT = CALORIMETRE DE REACTION ET RECIPIENT DE REACTION A AGITATION A COEFFICIENT DE TRANSFERT DE CHALEUR AMELIOREMIRTSCH F; POWIERSKI R; ROETZEL W et al.1980; THERMOCHIM. ACTA; NLD; DA. 1980; VOL. 40; NO 1; PP. 167-176; ABS. ENG; BIBL. 6 REF.Article

The effect of heat conduction resistances of tubes and shells on transient behaviour of heat exchangersROETZEL, W; YIMIN XUAN.International journal of heat and mass transfer. 1993, Vol 36, Num 16, pp 3967-3973, issn 0017-9310Article

Über das thermische Verhalten von Rohrbündelwärmeübertragern mit Segmentumlenkblechen = Thermal behaviour of bundled tube heat exchangers with segmental bafflesSPANG, B; ROETZEL, W.Chemieingenieurtechnik. 1991, Vol 63, Num 2, pp 134-135, issn 0009-286X, 2 p.Conference Paper

Analytisches Verfahren zur thermischen Berechnung mehrgängiger Rohrbündelwärmeübertrager = Procédé analytique pour le calcul thermique des échangeurs de chaleur à faisceaux tubulaires multiplesROETZEL, W; SPANG, B.Brennstoff-Wärme-Kraft. 1987, Vol 39, Num 12, issn 0006-9612, 531Article

Beulrohre mit verbessertem Wärmeübergang zum Einsatz in Wärmeaustauschern = Tube bosselé à échanges thermiques accrus, destiné à des échangeurs de chaleurROTH, J.-E; ROETZEL, W.VDI-Berichte. 1986, Vol 607, pp 1107-1130, issn 0083-5560, . 2Conference Paper

Thermal design of multi-fluid mixed-mixed cross-flow heat exchangersROETZEL, W; LUO, X.Heat and mass transfer. 2010, Vol 46, Num 10, pp 1077-1085, issn 0947-7411, 9 p.Article

Analytical calculation of trajectories using a power law for the drag coefficient variation with Mach numberROETZEL, W.WIT transactions on modelling and simulation. 2005, pp 303-312, isbn 1-8456-4015-2, 1Vol, 10 p.Conference Paper

Neue Näherungsgleichung zur einheitlichen Berechnung von Wärmeübertragern = New approximate equation for uniform heat exchanger designSPANG, B; ROETZEL, W.Heat and mass transfer. 1995, Vol 30, Num 6, pp 417-422, issn 0947-7411Article

Dynamic analysis of plate heat exchangers with dispersion in both fluidsDAS, S. K; ROETZEL, W.International journal of heat and mass transfer. 1995, Vol 38, Num 6, pp 1127-1140, issn 0017-9310Article

Hyperbolic axial dispersion model : concept and its application to a plate heat exchangerROETZEL, W; DAS, S. K.International journal of heat and mass transfer. 1995, Vol 38, Num 16, pp 3065-3076, issn 0017-9310Article

Analysis of transient behaviour of multipass shell and tube heat exchangers with the dispersion modelROETZEL, W; XUAN, Y.International journal of heat and mass transfer. 1992, Vol 35, Num 11, pp 2953-2962, issn 0017-9310Article

Herleitung der Energiegleichung für einphasige strömende Fluide = Calcul de l'équation d'énergie pour un écoulement de fluide uniphasique = Derivation of the energy equation for single phase flowing fluidsROETZEL, W; AHRENDTS, J.Wärme- und Stoffübertragung. 1985, Vol 19, Num 3, pp 203-204, issn 0042-9929Article

Consideration of maldistribution in heat exchangers using the hyperbolic dispersion modelROETZEL, W; CHAKKRIT NA RANONG.Chemical engineering and processing. 1999, Vol 38, Num 4-6, pp 675-681, issn 0255-2701Article