This paper resumes the results of a research in the field of two-phase thermal control using dielectric refrigerant fluids. The aim is to obtain information about the upper limit of the heat dissipation by using pool boiling application. Resorting to conventional methods operating at atmospheric conditions, such as finned surfaces and PBCR, a technique previously proposed by the authors, an increase of the critical heat flux (CHF) from 0.2 MW/m2 till to the limit of 1 MW/m2 (typical of boiling water), can be obtained. Moreover the authors propose a simple criterion, based on the one-dimensional analysis of fins to approach an optimum design of finned evaporators. The experimental results can be surprisingly confirmed by using this simple theoretical considerations.
Pool boiling heat transfer enhancement in cooling of finned evaporators with a dielectric refrigerant fluid
LATROFA, ENRICO MARIA;FANTOZZI, FABIO;FRANCO, ALESSANDRO;FILIPPESCHI, SAURO
1999-01-01
Abstract
This paper resumes the results of a research in the field of two-phase thermal control using dielectric refrigerant fluids. The aim is to obtain information about the upper limit of the heat dissipation by using pool boiling application. Resorting to conventional methods operating at atmospheric conditions, such as finned surfaces and PBCR, a technique previously proposed by the authors, an increase of the critical heat flux (CHF) from 0.2 MW/m2 till to the limit of 1 MW/m2 (typical of boiling water), can be obtained. Moreover the authors propose a simple criterion, based on the one-dimensional analysis of fins to approach an optimum design of finned evaporators. The experimental results can be surprisingly confirmed by using this simple theoretical considerations.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
