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Gro?e Auswahl, wenig Alternativen? Ersatzkältemittel für R404A-Kältesysteme in Supermärkten.

Many choices, few alternatives? Alternative refrigerants for R404A systems in supermarkets.

• Author(s) : STAHL M.
• Publication date: 2016/03
• Languages : German
• Keywords : Regulations, R134a, R744, R407e, R407a, R404A, Supermarket, Substitute, GWP, Refrigerant, CO2
• Source: CCI Zeitung - vol. 50 - n. 3
• Formats : PDF

IIR document

An improved approach to model compressors, condenser/gas cooler and their control system in refrigeration systems with R404A and R744 based on physical principles.

• Author(s) : SACASAS D., VEGA J., CUEVAS C., BORRAJO R.
• Publication date: 2023/09
• Languages :
• Keywords : Supermarket, R744, R404A, Booster, Compressor, Condenser, Gas cooler, Modelling
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 153
• Formats : PDF

IIR document

Experimental investigation on condensation heat transfer of R404A and R407C outside horizontal enhanced tubes.

• Author(s) : LIU C., OUYANG X.
• Publication date: 2015/08/16
• Languages : English
• Keywords : R407C, Horizontal tube, Heat transfer, R404A, Expérimentation, Refrigerant, Condensation
• Source: Proceedings of the 24th IIR International Congress of Refrigeration: Yokohama, Japan, August 16-22, 2015.
• Formats : PDF

Estudio de campo para comparar 4 refrigerantes en la misma instalación R507, R407A, R407F, R442A, para baja temperatura de evaporación (-30°C).

Field study to compare four refrigerants R507, R407A, R407F, R442A in the same low-temperature (-30°C) evaporation installation.

• Author(s) : CARRASCO J., GUTIERREZ F., TENA J.
• Publication date: 2014/03
• Languages : Spanish
• Keywords : Refrigerating system, Comparison, Low temperature, R507, R407a, Mixture, Evaporation, Refrigerant
• Source: Frío Calor Aire acondicionado - n. 467
• Formats : PDF

IIR document

R-407H as drop-in of R-404A. Experimental analysis in a low temperature direct expansion commercial refrigeration system.

• Author(s) : LLOPIS R., SÁNCHEZ D., CABELLO R., et al.
• Publication date: 2017/08
• Languages : English
• Keywords : Commercial application, Low GWP, Drop-in, R407h, R404A, Supermarket, HFC, Expérimentation
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 80
• Formats : PDF

Laboratory evaluation of R407H for commercial refrigeration.

• Author(s) : RYDKIN I., OHKUBO S., ARIMOTO H., et al.
• Publication date: 2018/07/09
• Languages : English
• Keywords : Comparison, Commercial application, R407h, R404A, Substitute, Performance, Mixture, HFC
• Source: 2018 Purdue Conferences. 17^th International Refrigeration and Air-Conditioning Conference at Purdue.
• Formats : PDF

IIR document

The evaluation of low GWP non-flammable refrigerant R407H for refrigeration as R404A alternative.

• Author(s) : OHKUBO S., ARIMOTO H., KOMATSU Y.
• Publication date: 2018/04/06
• Languages : English
• Keywords : Low GWP, R407h, Supermarket, Substitute, Simulation, Refrigerant
• Source: 5^th IIR International Conference on Sustainability and the Cold Chain. Proceedings: Beijing, Chine, 6-8 avril 2018
• Formats : PDF

IIR document

Retrofitting of R404a commercial refrigeration systems using R410a and R407f refrigerants.

• Author(s) : BARTOLINI M., GAMBERI M., GAMBERINI R., et al.
• Publication date: 2015/07
• Languages : English
• Keywords : Refrigerating system, R410A, Commercial application, R404A, GWP, Retrofitting
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 55
• Formats : PDF

F-Gases EU Regulation: R404A replacement refrigerants – compressor manufacturer experience.

• Author(s) : ZGLICZYNSKI M., SEDLIAK J.
• Publication date: 2015/06/12
• Languages : English
• Keywords : Regulations, Commercial application, R407a, R404A, Substitute, Testing, Refrigerant, Hermetic compressor
• Source: Le ultime tecnologie del freddo e del condizionamento. Atti del 16° Convegno Europeo: June 12-13, 2015, Milano, Italia.
• Formats : PDF

CFD analysis of HVAC scroll compressor performance: case study using two refrigerants (R407C and R410A).

• Author(s) : ADHIKARY P., BANDYOPADHYAY S., MAZUMDAR A.
• Publication date: 2018/07/27
• Languages : English
• Keywords : R410A, R407C, CFD, Temperature, Simulation, Pressure, Flow, Refrigerant, Air conditioning, Scroll compressor
• Source: Proceedings of the International Conference on Emerging Technologies for Sustainable and Intelligent HVAC&R Systems, Kolkata, July 27-28 2018.
• Formats : PDF

Simulación del efecto de la carga de refrigerante en una bomba de calor líquido-agua con R407C.

Simulation of the effect of refrigerant charge on an R407C liquid-water heat pump.

• Author(s) : ORTEGA I., SIERES J., CERDEIRA F., ALVAREZ E.
• Publication date: 2020/11/11
• Languages : Spanish
• Keywords : Heat pump, Refrigerant charge, R407C, HFC, Mixture, Tank, Scroll compressor, Plate exchanger, Thermostatic expansion valve, Modelling
• Source: X Congreso Ibérico y VIII Congreso Iberoamericano de Ciencias y Técnicas del Frío, CYTEF 2020.
• Formats : PDF

IIR document

Artificial neural network models for depicting mass flow rate of R22, R407C and R410A through electronic expansion valves.

• Author(s) : SALEH B., ALY A. A.
• Publication date: 2016/03
• Languages : English
• Keywords : Refrigerating system, R410A, R407C, Electronic expansion valve, Artificial neural network, R22
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 63
• Formats : PDF

IIR document

Condensation heat transfer of zeotropic refrigerant mixtures R407C and R448A in a horizontal smooth tube.

• Author(s) : XIA Y., SUULKER D., PU J. H., XU R. J., WANG H. S.
• Publication date: 2024/10
• Languages : English
• Keywords : R407C, R448a, HFC, HFO, Zeotropic mixture, Heat transfer, Bare pipe, Condensation, GWP, Expérimentation
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 166
• Formats : PDF

IIR document

Flow boiling heat transfer characteristics of R407C inside a smooth tube with different tube inclinations.

• Author(s) : KUNDU A., KUMAR R., GUPTA A.
• Publication date: 2014/09
• Languages : English
• Keywords : R407C, Heat transfer coefficient, Inclined tube, Heat transfer, Bare pipe, Flow, Refrigerant, Boiling
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 45
• Formats : PDF

Performance testing of a vapor injection scroll compressor with R407C.

• Author(s) : MOESCH T. W., BAHMAN A. M., GROLL E. A.
• Publication date: 2016/07/11
• Languages : English
• Keywords : R407C, Vapour, Cooling capacity, Performance, Injection, Testing, Scroll compressor
• Source: 2016 Purdue Conferences. 23^rd International Compressor Engineering Conference at Purdue.
• Formats : PDF

US: R134a, R410A and R407C could be banned in chillers from 2025

AHRI and NRDC issue joint letter supporting EPA SNAP proposal to prohibit R134a, R410A and R407C in new chillers from 2025.

• Publication date : 2016/04/06
• Subjects: HFCs alternatives

A low-GWP cooling system for the Eiffel Tower

The ageing R407C cooling system in the tower’s west pillar has been replaced with an energy efficient system using low GWP R1234ze(E).

• Publication date : 2022/04/04
• Subjects: HFCs alternatives

France: a HFC price commission before an index from INSEE (in French)

During SIFA, the Snefcca (French national union of refrigeration, kitchen equipment and air conditioning companies) confirms deadlines and framework of the future index from INSEE (French national institute for statistics and economic studies)...

• Publication date : 2015/12/09
• Subjects: Figures, economy, HFCs alternatives

Recycling could significantly cut down emissions from HFC production

A team of researchers estimated that with 30% of recycled refrigerants in the annual output, CO2 emissions from the production of R134a could be reduced by about a...

• Publication date : 2022/02/28
• Subjects: Environment

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

IIR GL2020 conference: Range of CO2 applications

Almost half of the presentations at the IIR Gustav Lorentzen conference in Kyoto focused on CO2, in commercial refrigeration systems but also in many other applications. Overview of these...

• Publication date : 2021/01/26
• Subjects: HFCs alternatives

Price increase for HFCs

Chemours, Mexichem and Arkema have announced 10-15% rise in cost of several HFCs from 1st January 2016

• Publication date : 2015/12/09
• Subjects: HFCs alternatives

EU Regulation on fluorinated gas impacts

The revised regulation on fluorinated gas No 517/2014 was published on May 20, 2014 in the Official Journal of the European Union. It entered into force on June 9 and will apply from January 1, 2015.

• Publication date : 2014/08/08
• Subjects: Regulation, HFCs alternatives

Supermarket refrigerant retrofitting.

A few figures about supermarkets retrofitting their refrigeration systems with alternative refrigerants.

• Publication date : 2017/03/24

US EPA proposes to prohibit certain high-GWP HFCs in MAC and retail refrigeration

EPA proposed in July 2014 to change the status of certain HFCs with high GWP previously listed as acceptable under the EPA’s SNAP Program to unacceptable in several end-uses.

• Publication date : 2014/10/29
• Subjects: Regulation, HFCs alternatives

US: Court strikes down EPA restrictions on HFCs

In August, the US Court of Appeals for the District of Columbia (D.C.) overturned Environmental Protection Agency (EPA) directives to ban certain high GWP HFC refrigerants.

• Publication date : 2017/12/11
• Subjects: Regulation, HFCs alternatives

US: EPA confirms two rules to reduce HFC emissions.

HFC phase-down: The US Environmental Protection Agency (EPA) announces a ban on a number of HFC refrigerants in certain applications and tightens leak rate rules.

• Publication date : 2017/01/17
• Subjects: Regulation, HFCs alternatives

New HFO/CO2 blends in the pipeline

The refrigeration and air-conditioning sector has long been divided into two distinct camps, that promoting natural refrigerants and that developing low-GWP fluorocarbons. But could this be about to change?

• Publication date : 2013/03/04

Mexichem, DuPont and Honeywell announced new HFO-based alternatives for R404A and R134a

M. Cooper, sales manager for Mexichem, revealed in RAC the manufacturer’s offering for stationary refrigeration would be based on its AC5 refrigerant (R444A) which has been undergoing development as a mobile air-conditioning refrigerant....

• Publication date : 2014/01/31

HFC emissions data

By using atmospheric measurements, the authors of a recent study published in the PNAS have found that the total CO2-equivalent emissions of the five most common HFCs increased from 198 (175–221) Tg-CO2-eq·y–1 in 2007 to 275 (246–304)...

• Publication date : 2015/08/05
• Subjects: Figures, economy, HFCs alternatives

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 : English, French
• Themes : HFCs