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Mostrando ítems 11-20 de 1864
Análise computacional da taxa de produção de vapor gerada em trocador de calor tipo jaqueta acoplado à seção riser de um leito fluidizado circulante de laboratório
(Universidade Tecnológica Federal do ParanáPonta GrossaBrasilDepartamento Acadêmico de Engenharia MecânicaEngenharia MecânicaUTFPR, 2021-05-13)
In last decades, the steam production from circulating fluidized bed (CFB) boilers has deserved importance due to their advantages in terms of energy efficiency and environmental impact. However, the abundant information ...
Mathematical prediction of freezing times of bovine semen straws placed in static vapor over liquid nitrogen
(Academic Press Inc Elsevier Science, 2013-02)
A widespread practice in cryopreservation is to freeze spermatozoa by suspending the straws in stagnant nitrogen vapor over liquid nitrogen (N2V/LN2) for variable periods of time before plunging into liquid nitrogen (-196 ...
Bancada didática de máquina a vapor
(Universidade Tecnológica Federal do ParanáPato BrancoBrasilDepartamento Acadêmico de MecânicaEngenharia MecânicaUTFPR, 2017-11-16)
This work lists definitions of thermodynamic properties with the objective of assisting teachers and students of different levels of schooling in the understanding of thermodynamic cycles, specifically the Rankine cycle. ...
Two-Phase Frictional Pressure Drop and Flow Boiling Heat Transfer for R245fa in a 2.32-mm Tube
(Oxfordshire, 2011-11)
Experimental two-phase frictional pressure drop and flow boiling heat transfer results are presented for a horizontal 2.32-mm
ID stainless-steel tube using R245fa as working fluid. The frictional pressure drop data was ...
Morphology changes induced by laser irradiation on disperse red 13 films prepared by physical vapor deposition
(2003-04-04)
Surface morphology changes induced by argon laser irradiation (514 nm) on disperse red 13 (DR13) films prepared by physical vapor deposition (PVD) were investigated. Atomic force microscopy was used to characterize the ...
Morphology changes induced by laser irradiation on disperse red 13 films prepared by physical vapor deposition
(2003-04-04)
Surface morphology changes induced by argon laser irradiation (514 nm) on disperse red 13 (DR13) films prepared by physical vapor deposition (PVD) were investigated. Atomic force microscopy was used to characterize the ...
ANÁLISIS ENERGÉTICO DE UN GENERADOR DE VAPOR DE 350 MW
(2011-05-27)
In this work has developed a methodology of energy analysis to determine the influence that environmental temperature has in the thermal efficiency of a steam generator of 350 MW that burns fuel oil to 100% charge and ...