Search results

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

Performance investigations on 10W/60 K high-capacity, light-weight single-stage pulse tube cryocoolers for space applications.

• Author(s) : DANG H. Z., SONG Y. Y., ZHOU B. L., et al.
• Publication date: 2015/08/16
• Languages : English
• Keywords : Pulse tube, High capacity, Design, Performance, Space, Cryocooler
• Source: Proceedings of the 24th IIR International Congress of Refrigeration: Yokohama, Japan, August 16-22, 2015.
• Formats : PDF

IIR document

Experimental investigation of counter flow heat exchangers for energy recovery ventilation in cooling mode.

• Author(s) : AL-ZUBAYDI A. Y. T, HONG G.
• Publication date: 2018/09
• Languages : English
• Keywords : High capacity, Ventilation, Recovery, Air-air, Cooling capacity, Polymer, Expérimentation, COP, Heat exchanger
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 93
• Formats : PDF

Recent Development of High-Energy Short-Pulse Lasers with Cryogenically Cooled Yb:YAG.

• Author(s) : SUI Y., YUAN M., BAI Z., FAN Z.
• Publication date: 2022/04
• Languages : English
• Keywords : Laser, Cryogenics, Thermodynamic property, Review, High capacity
• Source: Applied Sciences - 12 - 8
• Formats : PDF

IIR document

Analysis of the novel multi-vane Revolving Vane compressor – Theoretical modelling and experimental investigations.

• Author(s) : CHOO W. C., OOI K. T.
• Publication date: 2021/11
• Languages : English
• Keywords : Rotary compressor, Vane compressor, Prototype, High capacity, Cooling capacity, Modelling, Expérimentation, Performance, Test rig, Thermodynamic property
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 131
• Formats : PDF

A study of “OVAL” scroll compressor for capacity increase.

• Author(s) : IWATAKE W., KAWAMURA R., NARUMI K., KUDO D.
• Publication date: 2021/05
• Languages : English
• Keywords : High capacity, Scroll compressor, Geometry, Prototype, Efficiency, Testing, Performance
• Source: 2021 Purdue Conferences. 25^th International Compressor Engineering Conference at Purdue.
• Formats : PDF

IIR document

R718 turbo chillers and vacuum ice generation - Two applications of a new generation of high speed, high capacity R718 centrifugal compressors.

• Author(s) : HONKE M., SAFARIK M., HERZOG R.
• 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

IIR document

Investigation of two-phase injected compression with economization for high temperature application.

• Author(s) : BAHMAN A., ZIVIANI D., GROLL E.
• Publication date: 2019/08/24
• Languages : English
• Keywords : Military application, Cooling capacity, Injection, High temperature, Expérimentation, COP, Air conditioning, Compression
• Source: Proceedings of the 25^th IIR International Congress of Refrigeration: Montréal , Canada, August 24-30, 2019.
• Formats : PDF

Recommended by the IIR

Development of 3-cylinder rotary compressor for large capacity.

• Author(s) : SHISHIMOTO T., AOKI T., HIRANO K., SHIDA S., HIRAYAMA T.
• Publication date: 2021/05
• Languages : English
• Keywords : Rotary compressor, Cylinder, Inverter, Variable speed, Air conditioning, Building, Design, High capacity
• Source: 2021 Purdue Conferences. 25^th International Compressor Engineering Conference at Purdue.
• Formats : PDF

IIR document

Liquid nitrogen cooling system for superconducting electricity cables – experiences and advantages.

• Author(s) : HERZOG F., KUTZ T.
• Publication date: 2019/05/08
• Languages : English
• Keywords : Superconducting cable, Liquid nitrogen, Cooling capacity, Subcooling, Pump, High temperature, Expérimentation, Cryogenics
• Source: Cryogenics 2019. Proceedings of the 15^th IIR International Conference: Prague, Czech Republic, April 8-11, 2019.
• Formats : PDF

Recommended by the IIR / IIR document

Cooling of long superconducting cables with liquid nitrogen.

• Author(s) : HERZOG F., KUTZ T., REISER W.
• Publication date: 2021/10/05
• Languages : English
• Keywords : Superconducting cable, Liquid nitrogen, High temperature, Subcooling, Cryostat, Cooling capacity, Design, Modelling
• Source: Cryogenics 2021 online. Proceedings of the 16^th IIR International Conference, October 5-7, 2021.
• Formats : PDF

Study on a high capacity two-stage free piston Stirling cryocooler working around 30 K.

• Author(s) : WANG X., ZHU J., CHEN S., et al.
• Publication date: 2016/07
• Languages : English
• Keywords : Cooling capacity, Two-stage system, Stirling, Free piston, Modelling, Cryocooler
• Source: Cryogenics - vol. 80

Swing compressor with injection mechanism that realizes high heating capacity at low outside air temperatures.

• Author(s) : WADA R., TOKUDA E., IRIKAWA K., SUNAHARA Y., INADA Y., ENDO C., YANAGISAWA M.
• Publication date: 2022/07/15
• Languages : English
• Source: 2022 Purdue Conferences. 26^th International Compressor Engineering Conference at Purdue.
• Formats : PDF

Efficiency improvement of a high capacity transcritical CO2 heat pump for human comfort in large buildings.

• Author(s) : NESREDDINE H., MONNEY D., WEHBER W.
• Publication date: 2023/05/15
• Languages : English
• Source: 14^th IEA Heat Pump Conference 2023, Chicago, Illinois.
• Formats : PDF

Experimental characterization of a condensing units’ performance under a controlled refrigerant leakage.

• Author(s) : HADDAD E., ZOUGHAIB A.
• Publication date: 2021/05
• Languages : English
• Keywords : Expérimentation, Leakage, Condensing unit, Performance, R134a, Cooling capacity, Refrigerant charge, High pressure, Subcooling, COP
• Source: 2021 Purdue Conferences. 18^th International Refrigeration and Air-Conditioning Conference at Purdue.
• Formats : PDF

Assessing the market potential of industrial heat pumps in Europe

To address the lack of product development of high temperature heat pumps, a recent article provides manufacturers with an estimate of the industrial heat pump market potential in...

• Publication date : 2021/11/30
• Subjects: Figures, economy, Technology

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

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

Briefs: CO2 heat pumps in a retirement home

Villa Laura, a retirement home near Florence, Italy, is equipped with 4 water/water ground-water heat pumps operating with a transcritical CO2 cycle providing heating, air conditioning and hot water. This technology is already used to produce hot...

• Publication date : 2007/11/20

LNG vessels

The world's largest LNG vessel, Mozah, recently made its maiden visit to the South Hook LNG Terminal in Milford Haven, UK, heralding a new era in the history of liquefied natural gas (LNG) transportation. The Q-Max ship measures 345 metres long,...

• Publication date : 2010/03/07

R&D

The US Department of Energy's National Renewable Energy Laboratory (NREL) has developed a new air-conditioning system combining membranes, evaporative coolers and desiccants into a single device with the objective to suit to all climates,...

• 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

Solar Air conditioning

With high summer temperatures, air-conditioning and thermal comfort are increasingly important issues, but raise the challenges of high energy consumption and of environmental consequences. Three recent projects use solar energy to operate...

• Publication date : 2007/08/05

Trends and Figures: Cold storage capacity per capita, a global glimpse

IARW published a list showing their member countries' public refrigerated capacity in 2006 and we thought it might be interesting to calculate the refrigerated-warehouse capacity per capita by country. The list is topped by The Netherlands (551...

• Publication date : 2006/11/15

Marine refrigeration

The use of natural refrigerants is gradually spreading. Here are two examples of their use in the marine sector: - Environmentally-friendly fish transport American Freedom is one of the world's largest refrigerated ships and can hold up to...

• Publication date : 2007/11/20

Briefs: Largest distribution centre in Africa

The centre, built by Woolworths in Midrand, South Africa has a surface area of 72 000 m². The 2-stage refrigeration system uses 4.2 tons of ammonia. It operates at -9°C/+32°C on the low stage while the high-stage ammonia circuit is used to chill...

• Publication date : 2008/02/12

Oil-free chillers

At the beginning of 2005, Climavenata will launch its new range of liquid chillers: the "Turbo Efficiency Climaveneta System" (Tecs), which is an oil-free chiller. The range is fitted with Danfoss-Turbocor R-134a centrifugal compressors :...

• Publication date : 2005/02/10

Cheers to that!

An innovative brewery refrigeration system that uses natural CO2 gas has been conceived by engineers from the Ziemann Group in collaboration with Axima. This system, which will be of particular interest to large plants with extensive pipe networks...

• Publication date : 2006/05/05

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

Trends and Markets: The Dubai District-Cooling Boom

The United Arab Emirates has the potential to become the world's largest district-cooling market: demand is estimated at 10 million tonnes of refrigeration (36 360 MW) in the next 10 years. The construction boom in Dubai has triggered particularly...

• Publication date : 2007/02/12

Member news: Mirai Intex releases new high capacity ultra-low temperature refrigeration system

Mirai Intex, corporate member of the IIR, has released a new ultra-low temperature (ULT) system based on air-cycle technology, offering high cooling capacity.

• Publication date : 2021/03/09
• Subjects: Technology, HFCs alternatives

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

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

News from IIR members: Tecumseh do Brasil

Tecumseh do Brasil has reached a landmark of 170 million compressors manufactured since the company was set up 35 years ago. The company manufactures hermetic compressors and condensing units for domestic and commercial refrigeration and air...

• Publication date : 2009/05/18

IIR Conference: Auckland

Innovative Equipment and Systems for Comfort and Food Preservation , an IIR conference, will be held in Auckland, New Zealand, on February 16-18, 2006. Deadlines: June 1, 2005 for abstracts and September 16, 2005 for papers. December 9, 2005:...

• Publication date : 2005/06/14

News from IIR members: Johnson Controls

Johnson Controls and Princess Noura bint Abdulrahman University are beating the record books with York CYK chillers. To construct what is claimed to be the world's largest chiller plant using air-cooled radiators, Johnson Controls is providing 26...

• Publication date : 2011/02/07

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

News from IIR members: Star Refrigeration

Star Refrigeration has installed a highly efficient Azanechiller at a Scottish meat processing facility. The central pumped glycol system has a total cooling capacity of 365kW and includes pumps with variable speed drives, six ceiling...

• Publication date : 2011/08/04

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

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

News from IIR members: Linde

Linde has launched CRYOLINE XF, a new cryogenic spiral freezer, which uses advanced cross-flow technology to reduce freezing time and improve cryogen efficiency, while reducing overall freezer size.

• Publication date : 2012/05/11

IIR member news: A new BSRIA study on the global compressor market 

A recent study by BSRIA shows that sales of refrigeration compressors in 2022 are expected to reach 502 million units with a value of USD 48.6 billion, up 15% year-on-year. 

• Publication date : 2022/12/13
• Subjects: Figures, economy

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

UN Environment OzonAction and the IIR collaborate on the cold chain

On January 16, 2018, the IIR organised a side event dedicated to the cold chain at the First Inter-Regional Thematic Technical Workshops and Regional Network Meetings for National Ozone Officers, during which IIR experts presented five Cold Chain...

• Publication date : 2018/01/24

IIR conference on caloric cooling Thermag VIII: highlights

Thermag VIII was an opportunity to present new developments regarding magnetocaloric, electrocaloric and elastocaloric cooling.

• Publication date : 2018/10/18

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

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

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

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

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

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

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…)

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