A study on the fluid refrigerant charge in a Two-Phase Mechanically Pumped Loop system using R134a and R1234yf

Leandro Pereira; Gleberson  Humia; Ali Khosravi; Rémi  Revellin; Jocelyn  Bonjour; Luiz Machado; Juan Jose Garcia Pabon

doi:10.1016/j.applthermaleng.2019.113727

A study on the fluid refrigerant charge in a Two-Phase Mechanically Pumped Loop system using R134a and R1234yf

Leandro Pereira
, Gleberson Humia
, Ali Khosravi
, Rémi Revellin
, Jocelyn Bonjour
, Luiz Machado
, Juan Jose Garcia Pabon

Department of Energy and Mechanical Engineering

Universidade Federal de Minas Gerais
Université Claude Bernard Lyon 1
Federal University of Itajubá

Research output: Contribution to journal › Article › Scientific › peer-review

27 Citations (Scopus)

466 Downloads (Pure)

Abstract

Heat management by means of two-phase mechanically pumped loop (TMPL) possesses promising advantages such as long-distance heat transport, high heat density and good temperature control. Knowledge of the fluid charge has great importance for TMPL system efficiency. The present work is a theoretical/experimental study on the refrigerant charge in TMPL system using R134a and R1234yf refrigerants. The mass of refrigerant in the TMPL system was measured for several cooling capacities. The effects of vapor quality in the evaporator (varying from 0.1 to 1), mass flux (300kg.s-1m-2 and 400kg.s-1m-2), and saturation temperature (25°C and 30°C) on refrigerant charge in the TMPL were experimentally investigated. About 70 experimental points were analyzed and compared with a theoretical model employing eight different prediction tools for the determination of the void fraction. The best results were obtained by Zivi and Hughmark correlations with mean absolute errors of 12% and 13%, respectively.

Original language	English
Article number	113727
Number of pages	11
Journal	Applied Thermal Engineering
Volume	158
Early online date	9 May 2019
DOIs	https://doi.org/10.1016/j.applthermaleng.2019.113727
Publication status	Published - 25 Jul 2019
MoE publication type	A1 Journal article-refereed

Keywords

TMPL
R1234yf
R134a
void fraction
refrigerant charge
Refrigerant charge
Void fraction
HFO-1234YF
DROP-IN REPLACEMENT
PERFORMANCE
POTENTIALS
FLOW
LOW-GWP REFRIGERANTS
PRESSURE-DROP
BOILING HEAT-TRANSFER
COOLING LOOP
VOID FRACTION

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10.1016/j.applthermaleng.2019.113727

ENG_Pereira_Study_on_the_fluid_ATE_113727Accepted author manuscript, 1.72 MBLicence: CC BY-NC-ND

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title = "A study on the fluid refrigerant charge in a Two-Phase Mechanically Pumped Loop system using R134a and R1234yf",

abstract = "Heat management by means of two-phase mechanically pumped loop (TMPL) possesses promising advantages such as long-distance heat transport, high heat density and good temperature control. Knowledge of the fluid charge has great importance for TMPL system efficiency. The present work is a theoretical/experimental study on the refrigerant charge in TMPL system using R134a and R1234yf refrigerants. The mass of refrigerant in the TMPL system was measured for several cooling capacities. The effects of vapor quality in the evaporator (varying from 0.1 to 1), mass flux (300kg.s-1m-2 and 400kg.s-1m-2), and saturation temperature (25°C and 30°C) on refrigerant charge in the TMPL were experimentally investigated. About 70 experimental points were analyzed and compared with a theoretical model employing eight different prediction tools for the determination of the void fraction. The best results were obtained by Zivi and Hughmark correlations with mean absolute errors of 12\% and 13\%, respectively.",

keywords = "TMPL, R1234yf, R134a, void fraction, refrigerant charge, Refrigerant charge, Void fraction, HFO-1234YF, DROP-IN REPLACEMENT, PERFORMANCE, POTENTIALS, FLOW, LOW-GWP REFRIGERANTS, PRESSURE-DROP, BOILING HEAT-TRANSFER, COOLING LOOP, VOID FRACTION",

author = "Leandro Pereira and Gleberson Humia and Ali Khosravi and R{\'e}mi Revellin and Jocelyn Bonjour and Luiz Machado and \{Garcia Pabon\}, \{Juan Jose\}",

year = "2019",

month = jul,

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doi = "10.1016/j.applthermaleng.2019.113727",

language = "English",

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journal = "Applied Thermal Engineering",

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T1 - A study on the fluid refrigerant charge in a Two-Phase Mechanically Pumped Loop system using R134a and R1234yf

AU - Pereira, Leandro

AU - Humia, Gleberson

AU - Khosravi, Ali

AU - Revellin, Rémi

AU - Bonjour, Jocelyn

AU - Machado, Luiz

AU - Garcia Pabon, Juan Jose

PY - 2019/7/25

Y1 - 2019/7/25

N2 - Heat management by means of two-phase mechanically pumped loop (TMPL) possesses promising advantages such as long-distance heat transport, high heat density and good temperature control. Knowledge of the fluid charge has great importance for TMPL system efficiency. The present work is a theoretical/experimental study on the refrigerant charge in TMPL system using R134a and R1234yf refrigerants. The mass of refrigerant in the TMPL system was measured for several cooling capacities. The effects of vapor quality in the evaporator (varying from 0.1 to 1), mass flux (300kg.s-1m-2 and 400kg.s-1m-2), and saturation temperature (25°C and 30°C) on refrigerant charge in the TMPL were experimentally investigated. About 70 experimental points were analyzed and compared with a theoretical model employing eight different prediction tools for the determination of the void fraction. The best results were obtained by Zivi and Hughmark correlations with mean absolute errors of 12% and 13%, respectively.

AB - Heat management by means of two-phase mechanically pumped loop (TMPL) possesses promising advantages such as long-distance heat transport, high heat density and good temperature control. Knowledge of the fluid charge has great importance for TMPL system efficiency. The present work is a theoretical/experimental study on the refrigerant charge in TMPL system using R134a and R1234yf refrigerants. The mass of refrigerant in the TMPL system was measured for several cooling capacities. The effects of vapor quality in the evaporator (varying from 0.1 to 1), mass flux (300kg.s-1m-2 and 400kg.s-1m-2), and saturation temperature (25°C and 30°C) on refrigerant charge in the TMPL were experimentally investigated. About 70 experimental points were analyzed and compared with a theoretical model employing eight different prediction tools for the determination of the void fraction. The best results were obtained by Zivi and Hughmark correlations with mean absolute errors of 12% and 13%, respectively.

KW - TMPL

KW - R1234yf

KW - R134a

KW - void fraction

KW - refrigerant charge

KW - Refrigerant charge

KW - Void fraction

KW - HFO-1234YF

KW - DROP-IN REPLACEMENT

KW - PERFORMANCE

KW - POTENTIALS

KW - FLOW

KW - LOW-GWP REFRIGERANTS

KW - PRESSURE-DROP

KW - BOILING HEAT-TRANSFER

KW - COOLING LOOP

KW - VOID FRACTION

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U2 - 10.1016/j.applthermaleng.2019.113727

DO - 10.1016/j.applthermaleng.2019.113727

M3 - Article

SN - 1359-4311

VL - 158

JO - Applied Thermal Engineering

JF - Applied Thermal Engineering

M1 - 113727

ER -

A study on the fluid refrigerant charge in a Two-Phase Mechanically Pumped Loop system using R134a and R1234yf

Abstract

Keywords

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