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Steady state modeling of advanced vapor compression systems.

• Author(s) : BESHR M., AUTE V., RADERMACHER R.
• Publication date: 2016/07/11
• Languages : English
• Keywords : Loop, Vapour, Steady state, Air, Compression system, Modelling, Refrigerant
• Source: 2016 Purdue Conferences. 16th International Refrigeration and Air-Conditioning Conference at Purdue.
• Formats : PDF

Virtual household refrigerators at steady-state and transient conditions. numerical model and experimental validation.

• Author(s) : ABLANQUE N., OLIET C., RIGOLA J., et al.
• Publication date: 2016/07/11
• Languages : English
• Keywords : Transient state, Steady state, Household refrigerator, Review, Modelling
• Source: 2016 Purdue Conferences. 16th International Refrigeration and Air-Conditioning Conference at Purdue.
• Formats : PDF

IIR document

A steady and quasi-steady state analysis on the CO2 hybrid ground-coupled heat pumping system.

• Author(s) : JIN Z., EIKEVIK T. M., NEKSÅ P., et al.
• Publication date: 2017/04
• Languages : English
• Keywords : Steady state, R744, Air, Ground, Simulation, Heat pump, Hybrid system, Transcritical cycle, COP
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 76
• Formats : PDF

Mathematical modeling and analysis of steady state performance of a heat pipe network.

• Author(s) : MAHDAVI M., QIU S.
• Publication date: 2015/12/05
• Languages : English
• Keywords : Heat pipe, Heat transfer, Steady state, Simulation, Performance
• Source: Applied Thermal Engineering - vol. 91

IIR document

Minimizing data collection for field calibration of steady-state virtual sensors for HVAC equipment.

• Author(s) : CHEUNG H., BRAUN J. E.
• Publication date: 2016/09
• Languages : English
• Keywords : Sensor, Calibration, Design, Steady state, Accuracy, Air conditioning
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 69
• Formats : PDF

Comparison of approximation-assisted component modeling methods for steady state vapor compression system simulation.

• Author(s) : HUANG R., LING J., AUTE V.
• Publication date: 2018/07/09
• Languages : English
• Keywords : Comparison, Steady state, Compression system, Modelling, Cycle, Heat exchanger
• Source: 2018 Purdue Conferences. 17^th International Refrigeration and Air-Conditioning Conference at Purdue.
• Formats : PDF

Steady-state modeling of condensing units with an economizer loop.

• Author(s) : MURGHAM H., MYSZKA D., BAHEL V., et al.
• Publication date: 2018/07/09
• Languages : English
• Keywords : Heat transfer coefficient, Loop, Steady state, Simulation, Economizer, Condenser, Heat exchanger, Compressor, Pressure drop
• Source: 2018 Purdue Conferences. 17^th International Refrigeration and Air-Conditioning Conference at Purdue.
• Formats : PDF

On identifying steady-state parameters of an experimental mechanical-compression refrigeration plant.

• Author(s) : BEJARANO G., RODRÍGUEZ D., ALFAYA J. A., et al.
• Publication date: 2016/10/25
• Languages : English
• Keywords : Refrigerating system, Steady state, Compression system, Expérimentation, Change of phase, Heat exchanger
• Source: Applied Thermal Engineering - vol. 109, part A

IIR document

Steady-state performance of capillary tubes for small-scale vapour compression systems using different refrigerants.

• Author(s) : HMOOD K. S., POP H., APOSTOL V., AL QAISY S., BADESCU V.
• Publication date: 2021/10
• Languages : English
• Keywords : Capillary tube, Expérimentation, Vapour, Modelling, Steady state, Thermodynamic property
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 130
• Formats : PDF

Characterizing steady state compressor performance by using transient test data.

• Author(s) : BRENDEL L. P. M., CASKEY S. L., BRAUN J. E., GROLL E. A.
• Publication date: 2021/05
• Languages : English
• Keywords : Oil free compressor, Variable speed, Scroll compressor, Steady state, Prototype, Testing, Expérimentation, Performance, Thermodynamic property
• Source: 2021 Purdue Conferences. 25^th International Compressor Engineering Conference at Purdue.
• Formats : PDF

IIR document

Steady state testing and modeling of a CO2 two-stage refrigeration system with mechanical subcooler.

• Author(s) : BESHR M., BUSH J., AUTE V., et al.
• Publication date: 2016/08/21
• Languages : English
• Keywords : Vapour, Steady state, R744, Two-stage system, Subcooling, Simulation, Performance, Compression
• Source: 12^th IIR Gustav Lorentzen Conference on Natural Refrigerants (GL2016). Proceedings. Édimbourg, United Kingdom, August 21st-24th 2016.
• Formats : PDF

IIR document

Quasi-steady-state simulation of the on-off behaviour of household refrigerators: a self-tuning approach.

• Author(s) : SANTOS G. Z., RONZONI A. F., HERMES C. J. L.
• Publication date: 2019/08/24
• Languages : English
• Keywords : Energy consumption, Loop, Temperature, Steady state, Household refrigerator, Simulation, Modelling, Compressor
• Source: Proceedings of the 25^th IIR International Congress of Refrigeration: Montréal , Canada, August 24-30, 2019.
• Formats : PDF

Steady-state parametric study of semi-open absorption heat pump water heater performance.

• Author(s) : KUMAR N., GLUESENKAMP K. R., YANG Z., ABU-HEIBA A., PATEL V. K., BHAGWAT R., SANADHYA S., RODE R., SCHMID M., MOGHADDAM S.
• Publication date: 2021/05
• Languages : English
• Keywords : Steady state, Absorption system, Heat pump, Water heater, Performance, Dehumidification, Recovery, COP, Condensation, Expérimentation
• Source: 2021 Purdue Conferences. 18^th International Refrigeration and Air-Conditioning Conference at Purdue.
• Formats : PDF

A hybrid simulation model to predict the steady-state thermal profile of hermetic reciprocating compressors.

• Author(s) : AARDOOM F. A., ROSA V. H. P., DESCHAMPS C. J.
• Publication date: 2021/05
• Languages : English
• Keywords : Hermetic compressor, Reciprocating compressor, Simulation, Heat transfer, Thermal analysis, Thermodynamic property, Steady state
• Source: 2021 Purdue Conferences. 25^th International Compressor Engineering Conference at Purdue.
• Formats : PDF

Steady-state numerical simulation of a vapor compression heat pump system as an effective method to predict its performance.

• Author(s) : JANKOVIC Z., SIERRES ATIENZA J., CERDEIRA PÉREZ F., et al.
• Publication date: 2016/07/11
• Languages : English
• Keywords : R407C, Vapour, Steady state, Compression system, Simulation, Prediction, Heat pump, Performance
• Source: 2016 Purdue Conferences. 16th International Refrigeration and Air-Conditioning Conference at Purdue.
• Formats : PDF

US : increasing use of CO2 and propane in commercial refrigeration

As a result of regulations aimed at limiting the use of HFCs, the use of CO2 and propane as refrigerants in supermarkets in the United States is experiencing a steady growth. 

• Publication date : 2022/03/29

Development and evaluation of a reversible CO2 residential air conditioning system compared to a state-of-the art R410a unit

This paper was presented at the IIR Gustav Lorentzen Conference in Glasgow (Sep. 2004). A reversible CO2 prototype RAC split unit system was designed, built and installed in two calorimetric test chambers. The unit is based on the Lorentzen Cycle...

• Publication date : 2004/11/24

Integrated CO2-CHP system

Brunel - a UK University - and 14 industrial partners in the commercial refrigeration sector have presented an innovative integrated energy system which has been designed to meet the needs of medium and large supermarkets and can be tailored to...

• Publication date : 2011/02/11

Heat pump systems for HVAC in electric vehicles

Heat pump systems offer an energy efficient option for HVAC in electric vehicles. Recent studies present innovative technologies to further improve the heating and cooling performance of heat pump systems as...

• Publication date : 2021/01/27
• Subjects: HFCs alternatives

Virtual sensor for variable refrigerant flow AC system.

A summary referring to an article recently published in the International Journal of Refrigeration (IJR).

• Publication date : 2017/03/20

Increase of 12% of world LNG trade in 2017

Now published on an annual basis, the 2018 IGU World LNG Report provides key insights into LNG industry developments through the end of calendar year 2017.

• Publication date : 2018/09/20
• Subjects: Figures, economy

Cold chain industry in India.

Currently, India has 6,300 cold storage facilities unevenly spread across the country, with an installed capacity of 30.11 million metric tons.

• Publication date : 2016/03/14

Cool like a butterfly wing

New study demonstrates that butterfly wings contain a network of living cells with specific thermodynamic and thermoregulatory properties. Butterfly wings cool down as a result of low solar absorption combined with efficient radiative heat...

• Publication date : 2020/02/28

Europe dominated the global frozen food market in 2020

2020 has seen record sales in the frozen food sector. According to Frozen Food Europe, Europe had the largest share of the global frozen food market in 2020. Asia Pacific, the Middle East and Africa are...

• Publication date : 2021/01/27

The benefits of linear compressors

Three articles published recently in the IJR illustrate the strength of R&D work around linear compressors and highlight the benefits of these, especially in commercial and domestic...

• Publication date : 2020/02/27

ICR2019: overview of current refrigeration research topics (part III)

Energy storage, desiccant air conditioning, high-temperature heat pumps and ejector technologies were some of the salient topics of the latest IIR Congress. Continuation of the synthesis of key presentations of ICR2019.

• Publication date : 2019/10/30

Renewable energy for heating and cooling in the EU in 2020

The share of renewable energy sources used for heating and cooling in the EU continues to increase steadily, from 22% in 2019 to 23% in 2020. The share was above 50% in six Member...

• Publication date : 2022/03/07
• Subjects: Figures, economy

News from Korea

The Korean refrigeration and air-conditioning industry is the 4th largest in the world after the United States, China and Japan with USD 14.5 billion annual production in 2006, a figure equivalent to 10.7% of global production. The refrigeration...

• Publication date : 2007/11/20

Europe: F-gas regulation

On March 31, 2004, the European Parliament voted in its plenary session on the "F-gas" proposal (Proposal for an European Parliament and Council regulation on certain fluorinated greenhouse gases) of the European Commission dated August 12, 2003...

• Publication date : 2004/04/28

Ultracold polar molecules

Scientists at JILA, a joint institute of the National Institute of Standards and Technology (NIST) and the University of Colorado at Boulder (CU-Boulder), have applied their expertise in ultracold atoms and lasers to produce the first high-density...

• Publication date : 2008/10/22

HARFKO 2015: More successful than ever welcomes UNEP Ozone2Climate Roundtable & Roadshow

Last week the IIR was delighted to participate in the 13th Heating, Air-conditioning, Refrigeration & Fluid Exhibition – KOREA (HARFKO 2015).

• Publication date : 2015/03/18

UN Climate Change Conference in Bali

- The 13th United Nations Conference of the Parties on Climate Change, which was also the 3rd meeting of the Parties to the Kyoto Protocol, took place in Bali, Indonesia, on December 3-14, 2007. More than 10 000 persons attended this event which...

• Publication date : 2008/02/15

Three educational and awareness-raising events within the framework of INDEE+ project in 2021

For the INDEE+ project, the end of the year 2021 was marked by several educational events aiming to raise awareness of the application of clean cooling systems offered by the CO2/R744 refrigeration...

• Publication date : 2022/01/28

IJR editorial: The cop on climate change: a growing presence of refrigeration issues to be consolidated

The Conference of the Parties on climate change was held in Sharm-El-Sheikh (Egypt) from Sunday 6 November to Sunday 20 November 2022. Generally speaking, this COP did not result in the decisions and actions...

• Publication date : 2023/01/23
• Subjects: Environment

Ohrid 2015: Ammonia and CO2 refrigeration technologies at the forefront

In light of the intense debate on the F-Gas regulation, its implementation worldwide, as well as proposed amendments to the Montreal Protocol, the conference provided the ideal forum for the exchange of knowledge on ammonia and CO2 technologies.

• Publication date : 2015/04/21

Additive manufacturing of regenerators for caloric cooling

In many areas of engineering, additive manufacturing allows the production of complex and multifunctional products that could not be manufactured using traditional methods. In the...

• Last update : 2022/09/16
• Langues : French, English
• Themes : Caloric cooling (magnetocaloric, electrocaloric, elastocaloric and barocaloric cooling)

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

Cryogenics in the pharmaceutical industry: drug design and bioavailability improvement

Research activities in the pharmaceutical sector focus primarily on developing novel drug formulations which can elicit the desired response upon being administered to the patient...

• Last update : 2023/03/10
• Langues : French, English
• Themes : Freeze-drying in biology and medicine, Cryobiology, cryomedicine: general information