Search results

IIR document

Separation of binary mixtures based on helium and heavy inert gases.

• Publication date: 2023/04/25
• Languages :
• Keywords : Separation, Mixture, Purification, Helium, Xenon, Krypton, Argon, Adsorption, Membrane
• Source: Proceedings of the 17^th IIR International Conference on Cryogenics, Dresden, Germany, april 25-28 2023
• Formats : PDF

IIR document

Measurements of pρTx and specific heat capacity cv for (R290 + R1243zf) binary mixtures at temperatures from (292 to 350) K and pressures up to 11 MPa.

• Author(s) : SHENG B., DONG X., ZHAO Y., LI Z., YAN H., ZHONG Q., WANG J., GONG M., SHEN J.
• Publication date: 2020/04
• Languages :
• Keywords : R290, Propane, R1234zf, Thermodynamic property, Temperature, Pressure, Heat capacity, Expérimentation, Mixture
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 112
• Formats : PDF

IIR document

Experimental investigation of high-glide refrigerant mixture R1233zd(E)/R1234yf in a high-temperature heat pump.

• Author(s) : BRENDEL L. P. M., BERNAL S. N., ARPAGAUS C., WIDMAIER P., ROSKOSCH D., BARDOW A., BERTSCH S. S.
• Publication date: 2023/08/21
• Languages : English
• Keywords : Zeotropic mixture, High temperature, Heat pump, R1233zd(E), R1234yf, Expérimentation, COP, Glide, HFO, Industrial application, Thermodynamic cycle, Modelling
• Source: Proceedings of the 26^th IIR International Congress of Refrigeration: Paris , France, August 21-25, 2023.
• Formats : PDF

IIR document

Experimental investigation and new correlation for the bubble departure diameter of methane and ethane binary mixtures during nucleate pool boiling.

• Author(s) : LI Z., XUE H., SHEN J., ZHAO Y., GONG M.
• Publication date: 2022/05
• Languages :
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 137
• Formats : PDF

IIR document

Development of a novel flow control system with arduino microcontroller embedded in double effect absorption chillers using the LiBr/H₂O pair.

• Author(s) : CÉZAR K. L., CALDAS A. M. A., CORDEIRO M.C.L, DOS SANTOS C.A.C., OCHOA A. A. V., MICHIMA P.S.A
• Publication date: 2020/03
• Languages :
• Keywords : Flow, Control (automatic), Absorption, Chiller, Lithium bromide, Water, Mixture, Modelling
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 111
• Formats : PDF

Recommended by the IIR / IIR document

Zeotropic mixtures in low temperature Rankine cycles.

• Author(s) : SHAHROOZ M., LUNDQVIST P., NEKSÅ P.
• Publication date: 2020/12/07
• Languages : English
• Keywords : Rankine, Waste heat, Recovery, Mixture, Zeotropic mixture, Binary mixture, Natural refrigerant, Optimization, Performance, Low temperature
• Source: 14^th IIR-Gustav Lorentzen Conference on Natural Refrigerants (GL2020). Proceedings. Kyoto, Japon, December 7-9^th 2020.
• Formats : PDF

IIR document

Experimental investigation of thermophysical properties of lubricant refrigerant mixtures.

• Author(s) : STOECKEL K., NOSBERS R., BARTA R. B., THOMAS C., HESSE U.
• Publication date: 2021/09/01
• Languages : English
• Keywords : Binary mixture, Ternary mixture, Thermodynamic property, Lubricant, Zeotropic mixture, Expérimentation, R744, R152a, Calculation, Polyolester
• Source: 6^th IIR Conference on Thermophysical Properties and Transfer Processes of Refrigerants
• Formats : PDF

Recommended by the IIR / IIR document

Search of new A2 refrigerant mixtures. Possibilities of reducing hydrocarbons flammability via mixtures.

• Author(s) : CALLEJA-ANTA D., NEBOT-ANDRÉS L., CABELLO R., SÁNCHEZ D., LLOPIS R.
• Publication date: 2022/06/13
• Languages : English
• Keywords : Flammability, Hydrocarbon, Low GWP, Calculation, Refrigerant charge, Mixture
• Source: 15^th IIR-Gustav Lorentzen Conference on Natural Refrigerants (GL2022). Proceedings. Trondheim, Norway, June 13-15^th 2022.
• Formats : PDF

Transport properties for refrigerant mixtures.

• Author(s) : GELLER V., SHIMCHUK N., PLOKHOTNYUK M.
• Publication date: 2014
• Languages : English
• Keywords : Viscosity, Thermal conductivity, Prediction, Modelling, Mixture, Refrigerant
• Source: Holodil'na Tehnika i Tehnologiâ - vol.50 - n.3

IIR document

Zeotropic mixture ejector: Modeling approach, validation, and assessment based on composition ratio.

• Author(s) : LI S., WANG L., TAN Y., LI X., ZHANG K.
• Publication date: 2023/12
• Languages : English
• Keywords : Zeotropic mixture, Ejector, CFD, R32, R245fa, Mixture, Modelling
• Source: International Journal of Refrigeration - Revue Internationale du Froid - Vol. 156
• Formats : PDF

IIR document

A numerical investigation of flow boiling of non-azeotropic and near-azeotropic binary mixtures.

• Author(s) : DENG H., FERNANDINO M., DORAO C. A.
• Publication date: 2015/01
• Languages : English
• Keywords : Heat transfer, Zeotropic mixture, Binary mixture, Azeotropic mixture, Flow, Refrigerant, Boiling, Pressure drop
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 49
• Formats : PDF

IIR document

Experimental development of alternative mixtures to isobutane. Energy optimization.

• Author(s) : CALLEJA-ANTA D., NAPOLI G., NEBOT-ANDRÉS L., SÁNCHEZ D., CABELLO R., VISCITO L., MAURO A. W., LLOPIS R.
• Publication date: 2023/08/21
• Languages : English
• Keywords : Expérimentation, Test rig, Mixture, Binary mixture, COP, R600, R290, R152a, Isobutane, Optimization, Thermodynamic property
• Source: Proceedings of the 26^th IIR International Congress of Refrigeration: Paris , France, August 21-25, 2023.
• Formats : PDF

Experimental investigation of the heat conductivity of natural refrigerant oil mixtures.

• Author(s) : STOECKEL K., NOSBERS R., THOMAS C., HESSE U.
• Publication date: 2021/05
• Languages : English
• Keywords : Thermal conductivity, Natural refrigerant, Oil, Mixture, Zeotropic mixture, Propane, R290, Measurement, Expérimentation
• Source: 2021 Purdue Conferences. 18^th International Refrigeration and Air-Conditioning Conference at Purdue.
• Formats : PDF

IIR document

Thermophysical property measurements for R1234yf + R1234ze(E) mixture.

• Author(s) : HIGASHI Y.
• Publication date: 2015/08/16
• Languages : English
• Keywords : R1234yf, Measurement, R1234ze, Thermodynamic property, Mixture, Refrigerant
• Source: Proceedings of the 24th IIR International Congress of Refrigeration: Yokohama, Japan, August 16-22, 2015.
• Formats : PDF

Two-phase heat transfer of low gwp ternary mixtures.

• Author(s) : AZZOLIN M., BERTO A., BORTOLIN S., DEL COL D.
• Publication date: 2021/05
• Languages : English
• Keywords : HFC, HFO, Low GWP, Heat transfer, Zeotropic mixture, Ternary mixture, R455A, R452B, Expérimentation, Condensation, Flow boiling, Thermodynamic property
• Source: 2021 Purdue Conferences. 18^th International Refrigeration and Air-Conditioning Conference at Purdue.
• Formats : PDF

Alternative mixtures for R134a

A NIST study identifies 23 non-flammable or slightly flammable mixtures as R134a alternatives in air conditioning.

• Publication date : 2019/08/29

A study assesses alternative mixtures to two pure hydrocarbon refrigerants

An article reviews more than 11,000 mixtures of refrigerants that could be interesting alternatives to pure R290 and R600a.

• Publication date : 2020/02/05

HFC134a/HFO1234yf mixture: lower GWP without flammability

A recent study* published in the International Journal of Refrigeration (IJR) by Inha University, South Korea, compared the performance of HFC134a, HFO1234yf and HFO1234yf/HFC134a mixtures at three compositions of 5%, 10% and 15% HFC134a

• Publication date : 2013/11/04

Heat pumps: an approach to select the highest performing refrigerant mixture

One of the most downloaded IJR articles in 2019 concludes that zeotropic mixtures have the potential to significantly improve both the thermodynamic and economic performance of heat pumps in suitable applications.

• Publication date : 2019/04/30

For IIR members only

A new non-flammable mixture to boost the performance of CO2 systems

In a recent IJR article, researchers propose combining R744 with Dimethyl-ether (DME) to boost system performance while ensuring safety and low environmental impact, in a recent IJR...

• Publication date : 2024/02/26
• Subjects: Technology

R1234yf as a working fluid in Organic Rankine Cycle systems

A recent review article presented the use of HFO R1234yf and its mixtures in Organic Rankine Cycle (ORC) systems, namely in applications for waste heat recovery from internal...

• Publication date : 2021/09/07
• Subjects: Technology

ICR2015:Trane exhibits chiller with new DR-55 refrigerant

At ICR2015, Trane, a brand of Ingersoll Rand, is presenting an air-cooled demonstration chiller using the new DR-55 refrigerant (HFO-HFC mixture).

• Publication date : 2015/08/19

State of the art on the flammability of HFOs

An article recently published in the IJR reviews the flammability characteristics of 48 HFOs and blends for various experimental conditions.

• Publication date : 2020/02/05

Low GWP blends for domestic air conditioning

A review article presents the latest research trends on low GWP refrigerants, mainly HFC/HFO blends, for domestic air conditioning. 

• Publication date : 2023/03/28
• Subjects: HFCs alternatives

Optical refrigeration

A team in New Mexico University has created the first-ever optical cryocooler that could be applied to airborne and spaceborne sensors. It uses optical refrigeration which could enable miniaturization, an alternative to bulky mechanical...

• Publication date : 2010/05/27

ICR 2019: an overview of current refrigeration research (part I)

Presentation of the main scientific and technical topics covered in the papers of the 25th IIR International Congress of Refrigeration and summary of some of the 14 keynotes.

• Publication date : 2019/09/30
• Subjects: HFCs alternatives

Alternatives to replace R404A for refrigerated transport

With about 5 million refrigerated vehicles operating worldwide, there is active research and development focusing on identifying alternatives to R404A, which is traditionally used in truck and trailer...

• Publication date : 2020/09/04
• Subjects: HFCs alternatives

WhatGas, a smartphone application listing refrigerants

OzonAction has launched a useful application to identify refrigerant gases.

• Publication date : 2017/09/07
• Subjects: HFCs alternatives

Climate change: moving slowly but surely

During the International meeting on the Montreal Protocol that took place in Geneva in June 2010 (see Newsletter No. 43, July 2010), proposals to phase down HFCs using the tools of the Montreal Protocol were discussed again. They were presented...

• Publication date : 2011/02/07

Chillers: efficiency takes off

Chillers are key refrigerating systems since, according to the Department of Energy, in the US, they account for about 13% of the power consumed by the nation's buildings and 9% of the overall demand for electric power. Examples below illustrate...

• Publication date : 2008/10/25

CLIM'ECO workshop in Guadeloupe with skipper Victor Jost  

CLIM'ECO ambassador and Route du Rhum skipper Victor Jost arrived in Guadeloupe on 28th November. The next day, a CLIM'ECO workshop was organised by the SIGF (Guadeloupean refrigeration workers'...

• Publication date : 2022/12/13

News from IIR members: Kinarca

Kinarca obtains ISO 22000 certification for its gel-ice machine. Bureau Veritas Certification has certified that Kinarca's Food Security system applied to the design process, manufacturing assembly and maintenance of flo-ice machines is according...

• Publication date : 2009/02/24

New in the Encyclopedia: updated GWP values for HFCs

Find all the GWP values over 100 years and 20 years for hydrofluorocarbon (HFC) refrigerants.

• Publication date : 2023/09/22
• Subjects: Environment

Activities of the IIR’s Commission A2 on Liquefaction and Separation of Gases

The problems related to thermodynamic optimization and new technologies in liquefaction and separation of gases are actual and critical for many branches of modern industry, power generation and medicine.

• Publication date : 2014/03/07

Call for industrial partners for joint industry cryogenics project linked to LNG production

Become a project partner: Join the Joint Industry Project of MINES ParisTech – ARMINES “Evaluation of the crystallization risk in LNG production”.

• Publication date : 2017/03/16

Registration is now open! 12th International Conference on Compressors and their Systems

Book your seat at the well-established 12th International Conference on Compressors and their Systems to take place on September 6-8, 2021.

• Publication date : 2021/07/06
• Subjects: Technology

New in our Encyclopedia. Ice cream manufacturing and its environmental impact.

A comprehensive review of the freezing process, market data and environmental impact of ice cream manufacturing. 

• Publication date : 2022/10/27
• Subjects: Figures, economy, Technology

IC2015 Workshops: An opportunity to join, share and build together

ICR2015: A chance to actively participate in the innovation of refrigeration.

• Publication date : 2015/06/17

Member news: Koura introduces new refrigerant for air conditioning

Refrigerant manufacturer Koura recently introduced R468C, a refrigerant that could replace R410A in air conditioning systems.  

• Publication date : 2022/10/27
• Subjects: HFCs alternatives

New IIR Informatory Note: Advancements in Supermarket Refrigeration

Download your copy of the latest IIR Informatory Note on “Advancements in Supermarket Refrigeration”

• Publication date : 2018/04/04

Ice cream manufacturing, environmental impact and market data

From a physico-chemical point of view, ice cream is a complex, frozen multiphase mixture. The manufacturing process includes several stages of freezing which are described in this...

• Last update : 2023/06/30
• Langues : French, English
• Themes : Ice creams

Hydrocarbon refrigerants

Hydrocarbons such as R290 (propane), R600a (isobutane) or R1270 (propene/propylene) are low GWP non-toxic natural refrigerants with excellent thermodynamic properties. They offer an...

• Last update : 2022/06/22
• Langues : French, English
• Themes : Hydrocarbons, Containment, refrigerant charge reduction

Environmental impact of the ice cream industry

This summary document describes the environmental impact of ice cream manufacturing, which is mainly due to the energy consumption and refrigerants used.

• Last update : 2022/11/17
• Langues : French, English
• Themes : General information on environment (climate change, ozone depletion…)

Global warming potential (GWP) of HFC refrigerants

Using the latest updated data from UNEP’s RTOC 2022 report, we have compiled the 100-year GWP and 20-year GWP values of hydrofluorocarbon-based (HFC) refrigerants. Our table includes...

• Last update : 2023/09/15
• Langues : French, English
• Themes : HFCs

Thermophysical properties of hydrocarbon refrigerants

Thermophysical properties of over 20 hydrocarbon refrigerants, including single-component and blends.

• Last update : 2022/06/17
• Langues : English
• Themes : Hydrocarbons, Blends

Thermophysical properties of HFC refrigerants

Thermophysical properties of over 100 HFC refrigerants, including single-component and blends.

• Last update : 2022/06/17
• Langues : English
• Themes : HFCs, HFO et HCFO, Blends

Thermophysical properties of HFO refrigerants

Thermophysical properties of over 50 HFO refrigerants, including single-component and blends.

• Last update : 2022/06/17
• Langues : English
• Themes : HFO et HCFO, Blends

Liquefied Natural Gas: production process and cold energy recovery

Liquefied natural gas (LNG) is natural gas that has been cooled to about -160 °C and turned into a liquid to facilitate transportation and storage. A typical LNG supply chain...

• Last update : 2023/06/23
• Langues : French, English
• Themes : LNG and LPG

Nanorefrigerants

Nanorefrigerants are created by adding nanoparticles in suspension to a base refrigerant. They have a thermal conductivity that is 15% to 104% higher than that of the corresponding...

• Last update : 2022/06/17
• Langues : English, French
• Themes : Nanofluids