Search results

IIR document

Generalized transient simulation of two-phase heat exchangers using zeotropic fluid mixtures.

• Author(s) : GOYAL A., GARIMELLA S.
• Publication date: 2019/09
• Languages : English
• Keywords : Two-phase flow, Heat transfer, Temperature, Ammonia-water, Absorption system, Simulation, Modelling, Zeotropic mixture, Heat exchanger
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 105
• Formats : PDF

Two-phase flow and heat transfer of a non azeotropic mixture inside a single microchannel.

• Author(s) : DEL COL D., AZZOLIN M., BORTOLIN S.
• Publication date: 2014/07/14
• Languages : English
• Keywords : Two-phase flow, Microchannel, Heat transfer, R32, R1234ze, Mixture, Expérimentation, Condensation, Boiling, Pressure drop
• Source: 2014 Purdue Conferences. 15th International Refrigeration and Air-Conditioning Conference at Purdue.
• Formats : PDF

IIR document

PVTx properties for carbon dioxide (CO2)/difluoromethane (R32)/1,1,1,2-tetrafluoroethane (R134a) ternary mixture measured in the compressed liquid, superheated vapour, and two-phase regions.

Propriétés PVTx du mélange ternaire dioxyde de carbone (CO₂)/difluorométhane(R-32)/1,1,1,2-tétrafluoroéthane (R-134a) mesuré à l'état de liquide comprimé, de vapeur surchauffée et diphasique

• Author(s) : FEDELE L., DI NICOLA G., MENEGAZZO D., TOMASSETTI S., BOBBO S., QUATTROCCHI P., ALEMANNO L., CATANZANI L., AMATO S.
• Publication date: 2023/07
• Languages : English
• Keywords : Ternary mixture, R32, R744, R134a, Equation of state, Density, Two-phase flow, Superheat, Correlation
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 151
• Formats : PDF

Effect of nanoparticles aspect ratio on the two phase flow boiling heat transfer coefficient and pressure drop of refrigerant and nanolubricants mixtures in a 9.5 mm micro-fin tube.

• Author(s) : DEOKAR P. S., CREMASCHI L., WONG T., et al.
• Publication date: 2016/07/11
• Languages : English
• Keywords : Two-phase flow, Nanolubricant, Heat transfer, Nanoparticle, Mixture, Expérimentation, Refrigerant, Flow boiling, Pressure drop
• Source: 2016 Purdue Conferences. 16th International Refrigeration and Air-Conditioning Conference at Purdue.
• 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

IIR document

Two-phase heat transfer performance of ternary mixtures of HFOs and HFCs inside channels.

• Author(s) : AZZOLIN M., BERTO A., BORTOLIN S., et al.
• Publication date: 2018/09
• Languages : English
• Keywords : Heat transfer coefficient, Channel, R455A, R452B, Thermodynamic property, Zeotropic mixture, HFO, Expérimentation, Condensation, Pressure drop
• Source: 1^st IIR international conference on the application of HFO refrigerants, Birmingham, September 2-5 2018.
• Formats : PDF

CFD-based shape optimisation of a CO2 two-phase ejector mixing section.

• Author(s) : PALACZ M., SMOLKA J., KUS W., et al.
• Publication date: 2016/02/25
• Languages : English
• Keywords : R744, Performance, Optimization, Two-phase mixture, Ejector, Refrigerant, CO2
• Source: Applied Thermal Engineering - vol. 95

Thermal performance of two-phase thermosyphon loop in rotating thin pad.

• Author(s) : CHANG S. W., CAI W. L.
• Publication date: 2017/02
• Languages : English
• Keywords : Thermal analysis, Thermosyphon, Rotation, Performance, Two-phase mixture, Expérimentation, Evaporation
• Source: International Journal of thermal Sciences - vol. 112

IIR document

The existence of non-equilibrium two-phase flow of R600a at subcooled temperature in a vapor compression refrigeration system.

• Author(s) : KO J., SEO J. Y., LEE W. J., et al.
• Publication date: 2017/04/23
• Languages : English
• Keywords : Refrigerating system, R600a, Calculation, Two-phase mixture, Expérimentation, Enthalpy, Flow, Compression
• Source: 5^th IIR Conference on Thermophysical Properties and Transfer Processes of Refrigerants.
• Formats : PDF

IIR document

Condensation heat transfer of R513A and R516A in a small diameter channel: heat transfer coefficient and flow pattern.

• Author(s) : MATTIUZZO N., AZZOLIN M., BERTO A., BORTOLIN S., DEL COL D.
• Publication date: 2023/08/21
• Languages : English
• Keywords : Two-phase flow, Heat transfer coefficient, Condensation, Binary mixture, Ternary mixture, R513A, R516A, Azeotropic mixture, Expérimentation, Modelling
• Source: Proceedings of the 26^th IIR International Congress of Refrigeration: Paris , France, August 21-25, 2023.
• Formats : PDF

IIR document

Numerical study of gas-liquid two-phase flow distribution of refrigerant mixtures in a vertically-upward T-junction.

• Author(s) : FENG Z., LI H., LOH W. L., LEI X., LIU J., GUO K.
• Publication date: 2023/03
• Languages : English
• Keywords : Modelling, Simulation, Two-phase flow, R134a, Distribution, CFD
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 147
• Formats : PDF

IIR document

Effect of nanoparticle additives on the refrigerant and lubricant mixtures heat transfer coefficient during in-tube single-phase heating and two-phase flow boiling.

• Author(s) : DEOKAR P. S., CREMASCHI L.
• Publication date: 2020/02
• Languages : English
• Keywords : Two-phase flow, R410A, Nanolubricant, Heat transfer coefficient, Heat transfer, Expérimentation, Flow boiling
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 110
• Formats : PDF

Heat transfer performance of the blend R32/R1234ze(E).

• Author(s) : DEL COL D., AZZOLIN M., BORTOLIN S.
• Publication date: 2015/06/12
• Languages : English
• Keywords : Two-phase flow, Heat transfer, R32, R1234ze, Performance, Mixture, Expérimentation, Heat exchanger
• Source: Le ultime tecnologie del freddo e del condizionamento. Atti del 16° Convegno Europeo: June 12-13, 2015, Milano, Italia.
• Formats : PDF

IIR document

Flow-induced noise generation at the outlet of a capillary tube.

• Author(s) : RUEBELING J., GROHMANN S.
• Publication date: 2020/03
• Languages : English
• Keywords : Capillary tube, Noise, Flow, Velocity (fluids, gases), Vapour, R600a, Expérimentation, Two-phase mixture
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 111
• Formats : PDF

IIR document

Investigation of operation limits of vapor-liquid ejector working with natural refrigerants.

• Author(s) : HUANG H. Y., CHEN J. Y.
• Publication date: 2020/12/07
• Languages : English
• Keywords : Ejector, Hydrocarbon, Hexane, Pentane, Mixture, Natural refrigerant, Thermodynamic property, Two-phase flow
• Source: 14^th IIR-Gustav Lorentzen Conference on Natural Refrigerants (GL2020). Proceedings. Kyoto, Japon, December 7-9^th 2020.
• Formats : PDF

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

IJR highlights: review of low-GWP alternative refrigerants

In a recent review article based on over 60 published studies and published in the International Journal of Refrigeration, Chinese researchers have compared nearly 40 alternative low-GWP refrigerants in terms of...

• Publication date : 2021/06/28
• Subjects: HFCs alternatives

ICR2011 highlights: cooling particle detectors

Cooling systems for particle detectors attracted interest at the IIR’s Congress in Prague in August 2011. These highly specific applications have very strict requirements compared with standard cooling systems: refrigerants should be resistant to...

• Publication date : 2012/02/21

New cryogenic methods to control indoor air pollution

The journal Science of the Total Environment will publish in February 2019 an article exploring the capacity of cryogenic technologies to tackle indoor air pollution.

• Publication date : 2018/12/27

Kenyan fish processing facility upgrades from R22 to ammonia

East Africa Sea Foods (EASF), a fish processing facility in Kenya, recently replaced its aging R22 refrigeration system with a two-stage ammonia system.

• Publication date : 2020/04/05
• Subjects: Developing country, HFCs alternatives

Latest figures on HFC impact on climate change

EU reports that hydrofluorocarbons (HFCs) emissions from refrigeration and air conditioning (RAC) have decreased for the fourth consecutive year since 2014. On a global scale, the impact of HFCs on climate...

• Publication date : 2020/09/04
• Subjects: Environment

Revising A3 refrigerants charge limits to promote wider application

A recent IJR paper examines the validity and form of charge limits for “highly flammable” A3 refrigerants, which constitute low-GWP alternatives to HFCs. Authors propose to eliminate upper charge limits for...

• Publication date : 2020/06/30
• Subjects: HFCs alternatives

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

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

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 : English, French
• Themes : Ice creams

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 : English, French
• Themes : LNG and LPG