Publication

Flow Boiling in Horizontal Tubes. Part 2; New Heat Transfer Data for Five Refrigerants

John Richard Thome, Daniel Favrat
1998
Journal Articles

Abstract

A summary of a comprehensive experimental study on flow boiling heat transfer is presented for five refrigerants (R134a, R123, R402A, R404A and R502) evaporating inside plain horizontal, copper tube test sections. The test data were obtained for both 12.00 mm and 10.92 mm diameters using hot water as the heating source. Besides confirming known trends in flow boiling heat transfer data as a function of test variables, it was also proven that the heat flux level at the dryout point at the top of the tube in annular flow has a very significant downstream effect on heat tranfer coefficients in the annular flow regime with partial dryout.

Official source

https://infoscience.epfl.ch/entities/publication/b95ca4aa-736b-4918-a9dd-ba4ded568fb0

About this result

This page is automatically generated and may contain information that is not correct, complete, up-to-date, or relevant to your search query. The same applies to every other page on this website. Please make sure to verify the information with EPFL's official sources.

Graph Chat

Chat with Graph Search

Ask any question about EPFL courses, lectures, exercises, research, news, etc. or try the example questions below.

DISCLAIMER: The Graph Chatbot is not programmed to provide explicit or categorical answers to your questions. Rather, it transforms your questions into API requests that are distributed across the various IT services officially administered by EPFL. Its purpose is solely to collect and recommend relevant references to content that you can explore to help you answer your questions.

John Richard Thome, Daniel Favrat
1998
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/b95ca4aa-736b-4918-a9dd-ba4ded568fb0

About this result

Related concepts (32)

Critical heat flux

In the study of heat transfer, critical heat flux (CHF) is the heat flux at which boiling ceases to be an effective form of transferring heat from a solid surface to a liquid. Boiling systems are those in which liquid coolant absorbs energy from a heated solid surface and undergoes a change in phase. In flow boiling systems, the saturated fluid progresses through a series of flow regimes as vapor quality is increased. In systems that utilize boiling, the heat transfer rate is significantly higher than if the fluid were a single phase (i.

Nucleate boiling

In fluid thermodynamics, nucleate boiling is a type of boiling that takes place when the surface temperature is hotter than the saturated fluid temperature by a certain amount but where the heat flux is below the critical heat flux. For water, as shown in the graph below, nucleate boiling occurs when the surface temperature is higher than the saturation temperature (TS) by between . The critical heat flux is the peak on the curve between nucleate boiling and transition boiling.

Heat sink

A heat sink (also commonly spelled heatsink) is a passive heat exchanger that transfers the heat generated by an electronic or a mechanical device to a fluid medium, often air or a liquid coolant, where it is dissipated away from the device, thereby allowing regulation of the device's temperature. In computers, heat sinks are used to cool CPUs, GPUs, and some chipsets and RAM modules.

Related publications (32)

Flow Boiling in Horizontal Tubes. Part 2; New Heat Transfer Data for Five Refrigerants

Chat with Graph Search

A Decision-Support Framework for Process Design of Sustainable Aviation Fuel Production via Integrated Biorefineries

Thermal regulation of flowers: color‐driven differences in radiation absorption, cooling, and heat tolerance

Imaging Heat Transport in Suspended Diamond Nanostructures with Integrated Spin Defect Thermometers