... q _ I dO(O) (8) Q-kT b oc d~ Page 3. H. Nguyen and A. Aziz: Heat transfer from convecting-rad... more ... q _ I dO(O) (8) Q-kT b oc d~ Page 3. H. Nguyen and A. Aziz: Heat transfer from convecting-radiating fins of different profile shapes 69 ... Comparing Tables 1 and 3, it is observed that for c~ = 10, the heat transfer capability of the triangular fin is tess than the Page 4. 70 ...
This chapter contains sections titled: Augmentation Heat Transfer in Electronic Equipment Heat Pi... more This chapter contains sections titled: Augmentation Heat Transfer in Electronic Equipment Heat Pipes Solar Collectors and Related Equipment Finned Regenerators Numerical Analyses Mathematical Techniques Turbine Blades Design Methods Freezing or Melting on the Fin Faces Heat and Mass Transfer Miscellaneous Citations Nomenclature AugmentationHeat Transfer in Electronic EquipmentHeat PipesSolar Collectors and Related EquipmentFinned RegeneratorsNumerical AnalysesMathematical TechniquesTurbine BladesDesign MethodsFreezing or Melting on the Fin FacesHeat and Mass TransferMiscellaneous CitationsNomenclature
This chapter contains sections titled: Introduction Evaporation Boiling Performance of a Single C... more This chapter contains sections titled: Introduction Evaporation Boiling Performance of a Single Cylindrical Spine Optimum Dimensions for the Cylindrical Spine Minimum Mass Spine Extended Surfaces in Moist Air Nomenclature IntroductionEvaporationBoilingPerformance of a Single Cylindrical SpineOptimum Dimensions for the Cylindrical SpineMinimum Mass SpineExtended Surfaces in Moist AirNomenclature
This chapter contains sections titled: Introduction Bond or Contact Resistance of High-Fin Tubes ... more This chapter contains sections titled: Introduction Bond or Contact Resistance of High-Fin Tubes Fin Efficiency Approximation Air-Fin Coolers Nomenclature IntroductionBond or Contact Resistance of High-Fin TubesFin Efficiency ApproximationAir-Fin CoolersNomenclature
ABSTRACT Isolated strain of plant growth-promoting rhizobacterium UPMLH24 from Piper nigrum was i... more ABSTRACT Isolated strain of plant growth-promoting rhizobacterium UPMLH24 from Piper nigrum was identified as Bacillus cereus by 16S rRNA sequencing (GenBank Accession Number: HQ876004). The generated nucleotide sequence data was used to construct phylogenetic tree, estimate evolutionary divergence between sequences, and predict promoter position and secondary structure using computational analyses. The result shows that the isolate is closely related to members of the Bacillus cereus based on phylogenetic tree and evolutionary divergence analyses. Based on computational prediction, four promoter positions and secondary structure were identified and predicted.
This chapter contains sections titled: Introduction Plain Double-Pipe Exchanger Longitudinal Fin ... more This chapter contains sections titled: Introduction Plain Double-Pipe Exchanger Longitudinal Fin Double-Pipe Exchanger Heat Transfer Coefficients in Pipes and Annuli Pressure Loss in Pipes and Annuli Complete Design Series–Parallel Arrangements Multiple-Finned Double-Pipe Exchangers Closure Nomenclature IntroductionPlain Double-Pipe ExchangerLongitudinal Fin Double-Pipe ExchangerHeat Transfer Coefficients in Pipes and AnnuliPressure Loss in Pipes and AnnuliComplete DesignSeries–Parallel ArrangementsMultiple-Finned Double-Pipe ExchangersClosureNomenclature
A novel concept of double optimal linearization is introduced and used to obtain a simple and acc... more A novel concept of double optimal linearization is introduced and used to obtain a simple and accurate solution for the temperature distribution in a straight rectangular convective–radiative fin with temperature dependent thermal conductivity. The solution is built from the classical solution for a pure convection fin of constant thermal conductivity which appears in terms of hyperbolic functions. When compared with
This chapter contains sections titled: Introduction Condensation on Single Fins Dehumidification ... more This chapter contains sections titled: Introduction Condensation on Single Fins Dehumidification of Air on Fins Horizontal Integral-Fin Tubes Internally Finned Tubes Microfin Tubes Nomenclature IntroductionCondensation on Single FinsDehumidification of Air on FinsHorizontal Integral-Fin TubesInternally Finned TubesMicrofin TubesNomenclature
A three-step computer-aided procedure involving extension, analysis, and improvement of regular p... more A three-step computer-aided procedure involving extension, analysis, and improvement of regular perturbation series is applied to four problems in heat transfer. The problems examined are: (1) transient conduction in a semiinfinite medium with temperature-dependent thermal conductivity; (2) radiating heat shield with aerodynamic loading; (3) conduction with exponential heat generation; and (4) steady performance of a finned tube-sheet radiator. Results demonstrate the usefulness of the procedure.
... Applied Research Branch, Experimental Engineering Division, US Army Cold Regions Research and... more ... Applied Research Branch, Experimental Engineering Division, US Army Cold Regions Research and Engineering Laboratory, and Dr. Abdul Aziz, Professor, Department of ... The authors thank Dr. Mary Albert and Dr. Yoshisuke Nakano of CRREL for their technical review of this ...
This chapter contains sections titled: Introduction Longitudinal Radiating Fin of Rectangular Pro... more This chapter contains sections titled: Introduction Longitudinal Radiating Fin of Rectangular Profile Longitudinal Radiating Fins of Trapezoidal and Triangular Profile Use of the Cascade Algorithm Longitudinal Radiating Fin with Constant-Temperature Gradient Parabolic Radiating Profiles Radial Radiating Fins Closure Nomenclature IntroductionLongitudinal Radiating Fin of Rectangular ProfileLongitudinal Radiating Fins of Trapezoidal and Triangular ProfileUse of the Cascade AlgorithmLongitudinal Radiating Fin with Constant-Temperature GradientParabolic Radiating ProfilesRadial Radiating FinsClosureNomenclature
This chapter contains sections titled: Introduction Heat Transfer and Flow Friction Data ε–Ntu Me... more This chapter contains sections titled: Introduction Heat Transfer and Flow Friction Data ε–Ntu Method Design of a Compact Heat Exchanger Nomenclature IntroductionHeat Transfer and Flow Friction Dataε–Ntu MethodDesign of a Compact Heat ExchangerNomenclature
I. Introduction We consider the normal form of the linear partial differential equation of hyperb... more I. Introduction We consider the normal form of the linear partial differential equation of hyperbolic type in two independent variables (t) L(u) =u~y+ au~+ buy+ cu=d, ... ~o(X) u(x, y) 4 ~,~ (x) u,(x, y) + ~(x) u,(x, y) = a(x), on. 'y =/,(x), (2) flo(y)u(x,y)+fl~(y)u,~x,y)+~(y)u,(x,y)=~(y),
A finite-element approach is used to study the two-dimensional performance of a straight fin of r... more A finite-element approach is used to study the two-dimensional performance of a straight fin of rectangular profile operating in a convecting environment. The analysis includes the effects of internal heat generation, anisotropy of fin material, base temperature elevation (depression), and unequal heat transfer coefficients for tip and main convection surfaces. Numerical results are presented showing the impact of these effects on the heat removal capability of the fin. The graphical information provided is believed to be useful for predicting the performance of a two-dimensional rectangular fin under more general and realistic conditions.
... q _ I dO(O) (8) Q-kT b oc d~ Page 3. H. Nguyen and A. Aziz: Heat transfer from convecting-rad... more ... q _ I dO(O) (8) Q-kT b oc d~ Page 3. H. Nguyen and A. Aziz: Heat transfer from convecting-radiating fins of different profile shapes 69 ... Comparing Tables 1 and 3, it is observed that for c~ = 10, the heat transfer capability of the triangular fin is tess than the Page 4. 70 ...
This chapter contains sections titled: Augmentation Heat Transfer in Electronic Equipment Heat Pi... more This chapter contains sections titled: Augmentation Heat Transfer in Electronic Equipment Heat Pipes Solar Collectors and Related Equipment Finned Regenerators Numerical Analyses Mathematical Techniques Turbine Blades Design Methods Freezing or Melting on the Fin Faces Heat and Mass Transfer Miscellaneous Citations Nomenclature AugmentationHeat Transfer in Electronic EquipmentHeat PipesSolar Collectors and Related EquipmentFinned RegeneratorsNumerical AnalysesMathematical TechniquesTurbine BladesDesign MethodsFreezing or Melting on the Fin FacesHeat and Mass TransferMiscellaneous CitationsNomenclature
This chapter contains sections titled: Introduction Evaporation Boiling Performance of a Single C... more This chapter contains sections titled: Introduction Evaporation Boiling Performance of a Single Cylindrical Spine Optimum Dimensions for the Cylindrical Spine Minimum Mass Spine Extended Surfaces in Moist Air Nomenclature IntroductionEvaporationBoilingPerformance of a Single Cylindrical SpineOptimum Dimensions for the Cylindrical SpineMinimum Mass SpineExtended Surfaces in Moist AirNomenclature
This chapter contains sections titled: Introduction Bond or Contact Resistance of High-Fin Tubes ... more This chapter contains sections titled: Introduction Bond or Contact Resistance of High-Fin Tubes Fin Efficiency Approximation Air-Fin Coolers Nomenclature IntroductionBond or Contact Resistance of High-Fin TubesFin Efficiency ApproximationAir-Fin CoolersNomenclature
ABSTRACT Isolated strain of plant growth-promoting rhizobacterium UPMLH24 from Piper nigrum was i... more ABSTRACT Isolated strain of plant growth-promoting rhizobacterium UPMLH24 from Piper nigrum was identified as Bacillus cereus by 16S rRNA sequencing (GenBank Accession Number: HQ876004). The generated nucleotide sequence data was used to construct phylogenetic tree, estimate evolutionary divergence between sequences, and predict promoter position and secondary structure using computational analyses. The result shows that the isolate is closely related to members of the Bacillus cereus based on phylogenetic tree and evolutionary divergence analyses. Based on computational prediction, four promoter positions and secondary structure were identified and predicted.
This chapter contains sections titled: Introduction Plain Double-Pipe Exchanger Longitudinal Fin ... more This chapter contains sections titled: Introduction Plain Double-Pipe Exchanger Longitudinal Fin Double-Pipe Exchanger Heat Transfer Coefficients in Pipes and Annuli Pressure Loss in Pipes and Annuli Complete Design Series–Parallel Arrangements Multiple-Finned Double-Pipe Exchangers Closure Nomenclature IntroductionPlain Double-Pipe ExchangerLongitudinal Fin Double-Pipe ExchangerHeat Transfer Coefficients in Pipes and AnnuliPressure Loss in Pipes and AnnuliComplete DesignSeries–Parallel ArrangementsMultiple-Finned Double-Pipe ExchangersClosureNomenclature
A novel concept of double optimal linearization is introduced and used to obtain a simple and acc... more A novel concept of double optimal linearization is introduced and used to obtain a simple and accurate solution for the temperature distribution in a straight rectangular convective–radiative fin with temperature dependent thermal conductivity. The solution is built from the classical solution for a pure convection fin of constant thermal conductivity which appears in terms of hyperbolic functions. When compared with
This chapter contains sections titled: Introduction Condensation on Single Fins Dehumidification ... more This chapter contains sections titled: Introduction Condensation on Single Fins Dehumidification of Air on Fins Horizontal Integral-Fin Tubes Internally Finned Tubes Microfin Tubes Nomenclature IntroductionCondensation on Single FinsDehumidification of Air on FinsHorizontal Integral-Fin TubesInternally Finned TubesMicrofin TubesNomenclature
A three-step computer-aided procedure involving extension, analysis, and improvement of regular p... more A three-step computer-aided procedure involving extension, analysis, and improvement of regular perturbation series is applied to four problems in heat transfer. The problems examined are: (1) transient conduction in a semiinfinite medium with temperature-dependent thermal conductivity; (2) radiating heat shield with aerodynamic loading; (3) conduction with exponential heat generation; and (4) steady performance of a finned tube-sheet radiator. Results demonstrate the usefulness of the procedure.
... Applied Research Branch, Experimental Engineering Division, US Army Cold Regions Research and... more ... Applied Research Branch, Experimental Engineering Division, US Army Cold Regions Research and Engineering Laboratory, and Dr. Abdul Aziz, Professor, Department of ... The authors thank Dr. Mary Albert and Dr. Yoshisuke Nakano of CRREL for their technical review of this ...
This chapter contains sections titled: Introduction Longitudinal Radiating Fin of Rectangular Pro... more This chapter contains sections titled: Introduction Longitudinal Radiating Fin of Rectangular Profile Longitudinal Radiating Fins of Trapezoidal and Triangular Profile Use of the Cascade Algorithm Longitudinal Radiating Fin with Constant-Temperature Gradient Parabolic Radiating Profiles Radial Radiating Fins Closure Nomenclature IntroductionLongitudinal Radiating Fin of Rectangular ProfileLongitudinal Radiating Fins of Trapezoidal and Triangular ProfileUse of the Cascade AlgorithmLongitudinal Radiating Fin with Constant-Temperature GradientParabolic Radiating ProfilesRadial Radiating FinsClosureNomenclature
This chapter contains sections titled: Introduction Heat Transfer and Flow Friction Data ε–Ntu Me... more This chapter contains sections titled: Introduction Heat Transfer and Flow Friction Data ε–Ntu Method Design of a Compact Heat Exchanger Nomenclature IntroductionHeat Transfer and Flow Friction Dataε–Ntu MethodDesign of a Compact Heat ExchangerNomenclature
I. Introduction We consider the normal form of the linear partial differential equation of hyperb... more I. Introduction We consider the normal form of the linear partial differential equation of hyperbolic type in two independent variables (t) L(u) =u~y+ au~+ buy+ cu=d, ... ~o(X) u(x, y) 4 ~,~ (x) u,(x, y) + ~(x) u,(x, y) = a(x), on. 'y =/,(x), (2) flo(y)u(x,y)+fl~(y)u,~x,y)+~(y)u,(x,y)=~(y),
A finite-element approach is used to study the two-dimensional performance of a straight fin of r... more A finite-element approach is used to study the two-dimensional performance of a straight fin of rectangular profile operating in a convecting environment. The analysis includes the effects of internal heat generation, anisotropy of fin material, base temperature elevation (depression), and unequal heat transfer coefficients for tip and main convection surfaces. Numerical results are presented showing the impact of these effects on the heat removal capability of the fin. The graphical information provided is believed to be useful for predicting the performance of a two-dimensional rectangular fin under more general and realistic conditions.
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