Effects of Pressure and a Microporous Coating on HFC-245fa Pool Boiling Heat Transfer-Reference-Cited by-同舟云学术

Effects of Pressure and a Microporous Coating on HFC-245fa Pool Boiling Heat Transfer

Published:2014-07-22 Issue:10 Volume:136 Page:
ISSN:0022-1481
Container-title:Journal of Heat Transfer
language:en
Short-container-title:

Author:

Moreno Gilberto¹,Jeffers Jana R.²,Narumanchi Sreekant²

Affiliation:

1. National Renewable Energy Laboratory, Golden, CO 80401 e-mail:

2. National Renewable Energy Laboratory, Golden, CO 80401

Abstract

A study was conducted to experimentally characterize the pool boiling performance of hydrofluorocarbon HFC-245fa at pressures ranging from 0.15 MPa to 1.1 MPa (reduced pressure range: 0.04–0.31). Pool boiling experiments were conducted using horizontally oriented 1-cm2 heated surfaces to quantify the effects of pressure and a microporous-enhanced coating on heat transfer coefficients and critical heat flux (CHF) values. Results showed that the coating enhanced heat transfer coefficients and CHF by 430% and 50%, respectively. The boiling heat transfer performance of HFC-245fa was then compared with the boiling performance of HFC-134a and hydrofluoroolefin HFO-1234yf.

Publisher

ASME International

Subject

Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science

Link

http://asmedigitalcollection.asme.org/heattransfer/article-pdf/doi/10.1115/1.4027966/6207293/ht_136_10_101502.pdf

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