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Browsing by Subject "Mass flow rate"

Now showing items 1-10 of 10

A comprehensive study on the effect of cavitation on injection velocity in diesel nozzles

López, J. Javier; Salvador Rubio, Francisco Javier; De La Garza De Leon, Oscar; Arregle, Jean Joseph Pierre (Elsevier, 2012-12)

Results when testing cavitating injection nozzles show a strong reduction in mass flow rate when cavitation appears (the flow is choked), while the momentum flux is reduced to a lesser extent, resulting in an increase in ...
A physically based methodology to extrapolate performance maps of radial turbines

Payri González, Francisco; Serrano Cruz, José Ramón; Fajardo, Pablo; Reyes Belmonte, Miguel Ángel; Gozalbo Belles, Ricardo (Elsevier, 2012-03)

This paper details a physically based methodology to perform an extrapolation of the radial turbine performance maps, both mass flow characteristics and the efficiency curve. This method takes into account a narrow range ...
An experimental study of gasoline effects on injection rate, momentum flux and spray characteristics using a common rail diesel injection system

Payri, Raul; García Martínez, Antonio; Domenech Llopis, Vicente; Durrett, Russell; Plazas, Alejandro H. (Elsevier, 2012-07)

A comparative study using diesel fuel and gasoline has been conducted focusing on the injection process. In this paper an experimental study has been carried out comparing the effects of the different fuels on the mass ...
Analysis of map-based models for reciprocating compressors and optimum selection of rating points

Marchante-Avellaneda, Javier; Navarro-Peris, Emilio; Corberan, J.M.; Shrestha, Som S. (Elsevier, 2023-09)

[EN] The present work includes an in-depth performance analysis in fixed-speed reciprocating compressors. The industry standard for compressor characterization is the AHRI-540, which uses a 10-term and third-degree polynomial ...
Design of a new Venturi system to monitor mass flow with accuracy

Pérez Nebot, Miquel (Universitat Politècnica de València, 2021-06-14)

[ES] El laboratorio de Turbinas Aerotérmicas Experimentales de Purdue tiene el objetivo de medir la eficiencia de la turbina con una incertidumbre sin precedentes. Esta incertidumbre recae en la medida del flujo másico, ...
Flow regime effects on non-cavitating injection nozzles over spray behaviour

Payri, Raul; Salvador, F.J.; Gimeno, Jaime; Novella Rosa, Ricardo (ELSEVIER SCIENCE INC, 2011)

[EN] This paper deals with the influence of flow regime (laminar, transition or turbulent) on the internal flow behavior, and how it affects the spray development in diesel nozzles. In particular, the research described ...
Flow regime effects over non-cavitating diesel injection nozzles

Payri, Raul; Salvador, F.J.; Gimeno, Jaime; García Martínez, Antonio (SAGE PUBLICATIONS LTD, 2012)

[EN] The research conducted and explained in this paper aims to explore and understand the influence of flow regime (laminar, transition or turbulent) inside diesel injector nozzles. For this purpose, an experimental study ...
Modelling of Heat Pumps Working with Variable-Speed Compressors

Ossorio Santiago, Rubén Josep (Universitat Politècnica de València, 2024-08-06)

[ES] La tecnología de bombas de calor se ha vuelto estratégica en Europa, está extendiéndose rápidamente y se planea que reemplace las calderas de gas en un futuro cercano. Sin embargo, aún enfrenta desafíos, como encontrar ...
Study of Response Surface Models for the characterization of the performance in Refrigeration Equipments and Heat Pumps

Marchante Avellaneda, Javier (Universitat Politècnica de València, 2024-02-24)

[ES] En un contexto de creciente preocupación por el calentamiento global y de políticas energéticas internacionales, en el cual los sistemas de climatización de los edificios suponen una parte importante del consumo ...
Study of the hydraulic characteristics of two injectors fed with different fuels in a GDI system

Payri, Raul; Gimeno, Jaime; Marti-Aldaravi, Pedro; Mendoza Alvarez, Victor (Elsevier, 2022-06-01)

[EN] In the latter years, the Gasoline Direct Injection systems (GDI) have been studied with the aim of providing a solution to the particulate matter emission issue. It has been proved that emission levels are reduced ...