Liquid-liquid direct contact heat exchange using a perfluorocarbon liquid for waste heat recovery: (Heat transfer characteristics obtained with perfluorocarbon droplets descending in a hot water medium)

Hideo Inaba, Akihiko Horibe, Koichi Ozaki, Naoki Yokoyama

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

This paper has dealt with the heat transfer characteristics of a liquid-liquid direct contact operation in which a Perfluorocarbon (PFC) liquid was released in a hot water stream, which was a low-grade heat source such as urban sewage, for the purpose of heat recovery from it. The paper reported on a set of experiments in which a PFC liquid (1 800 kg/m3 at 20°C) was continuously injected from a downward-facing single nozzle into a slow and upward flow of hot water and it was disintegrated into a lot of droplets and then they were heated from the ascending hot water. The experimental results revealed that the size distribution and flow behavior of the droplet ensembles exerted an influence on the coefficient of overall heat transfer between the droplet ensembles and hot water and also the temperature effectiveness for the droplet ensembles.

Original languageEnglish
Pages (from-to)52-61
Number of pages10
JournalJSME International Journal, Series B: Fluids and Thermal Engineering
Volume43
Issue number1
Publication statusPublished - Feb 2000

Fingerprint

Fluorocarbons
waste heat
Waste heat utilization
Contacts (fluid mechanics)
heat transfer
recovery
Heat transfer
heat
Water
Liquids
liquids
water
sewage
Facings
Sewage
heat sources
nozzles
grade
Nozzles
Hot Temperature

Keywords

  • Coefficient of overall heat transfer
  • Direct contact heat transfer
  • Natural convection
  • Perfluorocarbon liquid droplet
  • Temperature effectiveness

ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes
  • Physical and Theoretical Chemistry
  • Mechanical Engineering

Cite this

@article{e1a3724a815d4fd789e4ce5434fbe10b,
title = "Liquid-liquid direct contact heat exchange using a perfluorocarbon liquid for waste heat recovery: (Heat transfer characteristics obtained with perfluorocarbon droplets descending in a hot water medium)",
abstract = "This paper has dealt with the heat transfer characteristics of a liquid-liquid direct contact operation in which a Perfluorocarbon (PFC) liquid was released in a hot water stream, which was a low-grade heat source such as urban sewage, for the purpose of heat recovery from it. The paper reported on a set of experiments in which a PFC liquid (1 800 kg/m3 at 20°C) was continuously injected from a downward-facing single nozzle into a slow and upward flow of hot water and it was disintegrated into a lot of droplets and then they were heated from the ascending hot water. The experimental results revealed that the size distribution and flow behavior of the droplet ensembles exerted an influence on the coefficient of overall heat transfer between the droplet ensembles and hot water and also the temperature effectiveness for the droplet ensembles.",
keywords = "Coefficient of overall heat transfer, Direct contact heat transfer, Natural convection, Perfluorocarbon liquid droplet, Temperature effectiveness",
author = "Hideo Inaba and Akihiko Horibe and Koichi Ozaki and Naoki Yokoyama",
year = "2000",
month = "2",
language = "English",
volume = "43",
pages = "52--61",
journal = "JSME International Journal, Series B: Fluids and Thermal Engineering",
issn = "1340-8054",
publisher = "Japan Society of Mechanical Engineers",
number = "1",

}

TY - JOUR

T1 - Liquid-liquid direct contact heat exchange using a perfluorocarbon liquid for waste heat recovery

T2 - (Heat transfer characteristics obtained with perfluorocarbon droplets descending in a hot water medium)

AU - Inaba, Hideo

AU - Horibe, Akihiko

AU - Ozaki, Koichi

AU - Yokoyama, Naoki

PY - 2000/2

Y1 - 2000/2

N2 - This paper has dealt with the heat transfer characteristics of a liquid-liquid direct contact operation in which a Perfluorocarbon (PFC) liquid was released in a hot water stream, which was a low-grade heat source such as urban sewage, for the purpose of heat recovery from it. The paper reported on a set of experiments in which a PFC liquid (1 800 kg/m3 at 20°C) was continuously injected from a downward-facing single nozzle into a slow and upward flow of hot water and it was disintegrated into a lot of droplets and then they were heated from the ascending hot water. The experimental results revealed that the size distribution and flow behavior of the droplet ensembles exerted an influence on the coefficient of overall heat transfer between the droplet ensembles and hot water and also the temperature effectiveness for the droplet ensembles.

AB - This paper has dealt with the heat transfer characteristics of a liquid-liquid direct contact operation in which a Perfluorocarbon (PFC) liquid was released in a hot water stream, which was a low-grade heat source such as urban sewage, for the purpose of heat recovery from it. The paper reported on a set of experiments in which a PFC liquid (1 800 kg/m3 at 20°C) was continuously injected from a downward-facing single nozzle into a slow and upward flow of hot water and it was disintegrated into a lot of droplets and then they were heated from the ascending hot water. The experimental results revealed that the size distribution and flow behavior of the droplet ensembles exerted an influence on the coefficient of overall heat transfer between the droplet ensembles and hot water and also the temperature effectiveness for the droplet ensembles.

KW - Coefficient of overall heat transfer

KW - Direct contact heat transfer

KW - Natural convection

KW - Perfluorocarbon liquid droplet

KW - Temperature effectiveness

UR - http://www.scopus.com/inward/record.url?scp=0034462810&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0034462810&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0034462810

VL - 43

SP - 52

EP - 61

JO - JSME International Journal, Series B: Fluids and Thermal Engineering

JF - JSME International Journal, Series B: Fluids and Thermal Engineering

SN - 1340-8054

IS - 1

ER -