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Research on noise reduction of variable speed rotary compressor with large capacity.

• Author(s) : WANG H., XIE Z., LU Y., CHU W., LI Z.
• Publication date: 2021/05
• Languages : English
• Keywords : Variable speed, Rotary compressor, High capacity, Noise, Reduction, Air conditioning, Simulation, Expérimentation, Optimization, Frequency
• Source: 2021 Purdue Conferences. 25^th International Compressor Engineering Conference at Purdue.
• Formats : PDF

A chiller control algorithm for multiple variable-speed centrifugal compressors.

• Author(s) : CABALLERO P., ORDONEZ J., SHIH C., et al.
• Publication date: 2014/07/14
• Languages : English
• Keywords : Capacity reduction, Chiller, Performance, Optimization, Control (generic), Centrifugal compressor
• Source: 2014 Purdue Conferences. 22nd International Compressor Engineering Conference at Purdue.
• Formats : PDF

A study on PWM bypass capacity control of scroll compressors.

• Author(s) : IIJIMA R., KOYAMA M.
• Publication date: 2014/07/14
• Languages : English
• Keywords : Capacity reduction, Power, Development, Control (generic), Air conditioning, Scroll compressor
• Source: 2014 Purdue Conferences. 22nd International Compressor Engineering Conference at Purdue.
• Formats : PDF

IIR document

Supermarket demand response using the CO2 booster cycle: model development, validation, and simulations of load shed events with CO2 booster systems.

• Author(s) : BUSH J., LING J., AUTE V., et al.
• Publication date: 2018/06/18
• Languages : English
• Source: 13^th IIR Gustav Lorentzen Conference on Natural Refrigerants (GL2018). Proceedings. Valencia, Spain, June 18-20th 2018.
• Formats : PDF

IIR document

Heat transfer performance variations of condensers due to non-uniform air velocity distributions.

• Author(s) : LEE W. J., JEONG H. J.
• Publication date: 2016/09
• Languages : English
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 69
• Formats : PDF

Transient thermal model of a vehicle's cabin validated under variable ambient conditions.

• Author(s) : TORREGROSA-JAIME B., BJURLING F., CORBERÁN J. M., et al.
• Publication date: 2015/01
• Languages : English
• Source: Applied Thermal Engineering - vol. 75

R1234ze(E) as a low-GWP replacement of R410A in fin-and-tube evaporators.

• Author(s) : SALEEM S., BRADSHAW C. R., BACH C. K.
• Publication date: 2022
• Languages : English
• Source: 2022 Purdue Conferences. 19^th International Refrigeration and Air-Conditioning Conference at Purdue.
• Formats : PDF

IIR document

Experimental analysis of the use of R1234yf and R1234ze(E) as drop-in alternatives of R134a in a water-to-water heat pump.

• Author(s) : COLOMBO L. P. M., LUCCHINI A., MOLINAROLI L.
• Publication date: 2020/07
• Languages : English
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 115
• Formats : PDF

IIR document

Effect of falling film condenser on refrigerant charge for domestic split air conditioner.

• Author(s) : PHADAKE H., UTAGE A., MALI K. V.
• Publication date: 2023/08/21
• Languages : English
• Source: Proceedings of the 26^th IIR International Congress of Refrigeration: Paris , France, August 21-25, 2023.
• Formats : PDF

Investigation of a novel hybrid heat pump concept.

• Author(s) : REUM T., SCHMITT D., SUMM T., SCHRAG T.
• Publication date: 2023/05/15
• Languages : English
• Source: 14^th IEA Heat Pump Conference 2023, Chicago, Illinois.
• Formats : PDF

Experimental evaluation of the azeotropic mixture R516A as an R134a drop-in alternative for moderately high-temperature heat pumps.

• Author(s) : SHAKER AL-SAYYAB A. K., MOTA BABILONI A., BARRAGÁN-CERVERA A., NAVARRO-ESBRÍ J.
• Publication date: 2022/04
• Languages : English
• Source: XI Congreso Ibérico y IX Congreso Iberoamericano de Ciencias y Técnicas del Frío, CYTEF 2022.
• Formats : PDF

Development of large capacity and high efficiency rotary compressor.

• Author(s) : JAFET FERDHY M., TOSHIMASA A., SHOUGO S., et al.
• Publication date: 2018/07/09
• Languages : English
• Keywords : High capacity, Efficiency, Discharge, Simulation, Heat pump, Optimization, Cylinder, COP, Rotary compressor
• Source: 2018 Purdue Conferences. 24^th International Compressor Engineering Conference at Purdue.
• Formats : PDF

IIR document

Drop-in analysis of R450A and R513A as low-GWP alternatives to R134a in a water-to-water heat pump.

• Author(s) : MOLINAROLI L., LUCCHINI A., COLOMBO L. P. M.
• Publication date: 2022/03
• Languages : English
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 135
• Formats : PDF

IIR document

Low temperature heat storages in CO2 supermarket refrigeration systems.

• Author(s) : FIDORRA N., HAFNER A., MINETTO S., et al.
• Publication date: 2015/08/16
• Languages : English
• Source: Proceedings of the 24th IIR International Congress of Refrigeration: Yokohama, Japan, August 16-22, 2015.
• Formats : PDF

Development of scroll compressor for 16HP VRF system.

• Author(s) : NAGAOKA F., MYOGAHARA M., KATO T.
• Publication date: 2014/07/14
• Languages : English
• Source: 2014 Purdue Conferences. 22nd International Compressor Engineering Conference at Purdue.
• Formats : PDF

China receives 265 million USD from the Multilateral Fund to reduce HCFC use

During its 64th meeting in Montreal, Canada, from July 25 to 29, 2011, the Executive Committee of the Multilateral Fund (MLF) – a  financial body established to help developing countries meet their Montreal Protocol commitments – has assessed...

• Publication date : 2011/08/16

Charge minimization in hydrocarbon systems

This paper was presented at the IIR Gustav Lorentzen Conference in Glasgow (Sep. 2004). It presents the results of the project to minimize charge in a R290 system that has 1-1.5 kW refrigeration capacity. Currently, there are many guidelines...

• Publication date : 2004/11/24

News about IIR Member: Cemagref

Researchers from Cemagref, corporate member of the IIR, in conjunction with the GREThE in Grenoble, and financed by the Agency for the environment and energy management (ADEME), have developed a prototype refrigerating system that allows the...

• Publication date : 2006/05/05

Paris district cooling is growing

A presentation of the Paris district cooling system by François Dupoux, President-General Director of Climespace (operator of the district cooling system) during the IIR-AFF centenary conference in Paris attracted a lot of interest. Many...

• Publication date : 2008/08/12

Sorption chillers

Sorption chiller technology is rapidly developing, especially that using solar energy. - As highlighted by Jacob and Kohlenbach* during the latest IIR Gustav Lorentzen Conference on Natural Working Fluids in Sydney, in Europe, numerous new...

• Publication date : 2011/02/07

Refrigerated storage trends

Several cold store building projects illustrate trends currently observed in the refrigerated storage field: - by building in Harnes the largest cold store in France, frozen chip producer Mc Cain intends to house under one roof in April 2010 its...

• Publication date : 2009/05/18

Green light for VIP project

The EU's sustainable development project aiming to reduce energy consumption has led to the recently concluded Vacuum Insulating Panels (VIP) project, initiated in 2001. According to the designers, these panels provide 5-7 times more insulating...

• Publication date : 2005/07/19

Brief: Protrait of an optimal system

With looming commitments under the Kyoto Protocol, energy efficiency in buildings, including in art galleries, is essential. Paintings not only require an aesthetic environment, but one in which the air temperature and humidity is controlled. The...

• Publication date : 2006/05/05

PCMs and ice slurries: PCMs: two recent applications

Phase-change materials (PCMs) can provide thermal storage which means that they can absorb thermal energy when they solidify and release it when they melt. This can be very useful to dampen temperature swings. PCMs are usually water-based and are...

• Publication date : 2007/02/12

Data centre cooling

Data processing environments were estimated in 2006 to consume about 1.5% of the total electricity in the US. Data centre power consumption has roughly doubled in the last 5 years and is expected to double again in the next 5 years to more than...

• Publication date : 2009/02/25

Green cooling solutions for the Olympics

VANOC, the Vancouver Organizing Committee (www.Vancouver2010.com), claims that these Olympics are the greenest ever and there are whole lists of environmentally friendlier features in the venues. And...

• Publication date : 2010/02/19

Refrigeration reduces the glycemic index of cooked rice

Several studies highlight the benefits of refrigeration on the glycaemic index of rice, which is important in the control of chronic diseases such as diabetes.

• Publication date : 2022/12/05
• Subjects: General information

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

Cutting CO2 emissions thanks to ice storage: a Chinese example

Ice storage could help in minimizing the CO2 emissions of the electricity sector in China

• Publication date : 2012/03/05

Performance of R32 and R290 as alternatives to R22 and R410A in domestic air conditioning

According to the authors, regardless of the capacity difference, R290 could be considered as the most appropriate substitute in air conditioners with small finned tube heat exchangers

• Publication date : 2014/09/25

Participation of the IIR at COP-10

On December 6-18, 2004, over 6100 participants from 169 countries attended the 10th Conference of the Parties (COP-10) to the United Nations Framework Convention on Climate Change (UNFCCC)  held at the Rural Exhibition Center in Buenos Aires ,...

• Publication date : 2005/02/11

Member News: Daikin partners with Fujifilm to reduce noise from some of its ventilation/humidification units

The Japanese company Daikin will soon use a new technology to reduce noise in some of its ventilation and humidification units. 

• Publication date : 2022/02/28

STEF-TFE opens largest cold store in Madrid

New site cuts energy consumption by 15% with innovative energy storage system during off-peak hours

• Publication date : 2011/12/08

New EU research project BETTED gets underway!

The IIR is one of 10 partners of the new European research project aimed at promoting the energy transition of the dairy value chain.

• Publication date : 2024/03/27

IIR member news: Carrier Transicold

Carrier Transicold, major transport refrigeration company, will offer R452A as an optional alternative to R404A.

• Publication date : 2015/04/23
• Subjects: Regulation

Heat pumps, the central theme of the recent IIR Congress

An overview of the research carried out in the field of heat pumps, with the aim of achieving greater flexibility and increased energy efficiency, in particular through to the use of thermal energy...

• Publication date : 2023/10/24

The IIR publishes two new IIR Informatory Notes on Energy Recovery!

The International Institute of Refrigeration (IIR) has just published two new Informatory Notes on energy recovery: one on Energy Recovery in Mechanical Ventilation Systems and the other one on Air-to-Air Energy...

• Publication date : 2021/07/13
• Subjects: Technology, Environment

Two new IIR Informatory Notes on Energy Recovery!

The IIR has just published two new Informatory Notes on energy recovery: one on Energy Recovery in Mechanical Ventilation Systems and the other one on Air-to-Air Energy Recovery Equipment. 

• Publication date : 2021/06/29

IIR Working Group on the Cold Chain in Warm Countries appoints a new chairperson

Newly appointed chairperson, Halima Thraya, will oversee and coordinate the various efforts and projects carried out by the Working Group.

• Publication date : 2015/06/03

Small steps towards a giant leap! Parties to the Montreal Protocol continue discussions on HFCs

Last week saw another step towards a global agreement on the phase down of ozone depleting substances, the event started with a buzz around the new amendment proposals to the Montreal Protocol.

• Publication date : 2015/04/29
• Subjects: Regulation

Editorial by Mrs. Sylvie Lemmet

The refrigeration and air conditioning (RAC) industry is remarkable for its contribution to sustainable development and indeed to the United Nations' Millennium Development Goals. Preservation of perishable food and medicines has resulted in...

• Publication date : 2007/08/05

IIR in Bangkok: Highlights from COP13/MOP36 and the World Cold Chain Symposium

IIR actively participated in the COP13/MOP36 and 2024 World Cold Chain Symposium events organised in Bangkok, Thailand, from 26 October to 1 November, hosting two side events and promoting solutions for...

• Publication date : 2024/11/27
• Subjects: Regulation, Environment

Cooling Keeps Food Fresh : Global Campaign Announced for World Refrigeration Day, June 26

Since 2019, June 26 celebrates the World Refrigeration Day. With increasing global stakes at hand over the past years, refrigeration took a leading role at the heart of international...

• Publication date : 2022/05/25
• Subjects: Environment

IIR conference activities in 2016 show a promising choice of events

IIR conference activities in 2016 show a promising choice of events covering cutting edge refrigeration themes from refrigerants to energy issues; from cold chain sustainability to new refrigeration technologies.

• Publication date : 2016/03/02

Check out the upcoming cutting edge IIR events for 2016

IIR conference activities in 2016 show a promising choice of events.

• Publication date : 2015/12/16

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

Cryogenic nitrogen in the food and beverage industry

The adoption of cryogenic processes in the food and beverage industry is predominantly driven by liquid nitrogen (LIN), and it is the preferred candidate for food chilling and...

• Last update : 2023/11/07
• Langues : French, English
• Themes : Freezing of foodstuffs

Additive manufacturing of heat exchangers

In the refrigeration industry, additive manufacturing (colloquially referred to as “3D printing”) makes it possible to fabricate novel, complex and potentially more energy efficient...

• Last update : 2022/09/07
• Langues : French, English
• Themes : Evaporators, condensers and other heat exchangers

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