[EN] The selection of suitable correlations for calculating heat transfer coefficients and pressure drop plays a fundamental role in the use of semi-empirical models for the simulation of the performance of a heat exchanger. ...

This PhD work has been dedicated to the improvement of the modelling of air condensers of both round tube and fins (RTPFs) and Minichannel technologies. The calculation platform employed is IMST-ART. This is a dedicated ...

[EN] In the first part of the current thesis, two fundamental numerical models (Fin2D-W and Fin1D-MB) for analyzing the air-side performance of minichannel evaporators were developed and verified. The Fin2D-W model applies ...

[ES] La tecnología de figoríficos no-frost consiste en el uso de un evaporador externo al espacio donde se refrigera el producto con tal de que la escarcha se deposite sobre él. El evaporador usado normalmente es del tipo ...

[EN] Single phase formulas based on logarithmic mean temperature difference (LMTD) or Effectiveness (E-NTU) are widely and wrongly used for the thermal analysis of evaporators and condensers. Those formulas do not take ...

Consulta en la Biblioteca ETSI Industriales (7550)

La presente tesis se ha llevado a cabo en el Instituto de Ingeniería Energética de la Universitat Politècnica de València y durante una estancia en el National Institute of Standards and Technology (NIST). El objetivo ...

[EN] For a microchannel heat exchanger (MCHX), given the working conditions, main geometric data of the fin and tubes, heat transfer and face areas, there are multiple choices for the refrigerant circuitry and aspect ratio. ...

Proyecto confidencial (Riunet)

This paper presents a comparative study between the air-side heat transfer results of a two-dimensional numerical model for minichannel evaporators (Fin2D-W), and the results of the classical ε¿NTU approach. This study ...