Search results

Guide Vane for Thermal Enhancement of a LED Heat Sink.

• Author(s) : BYUN S., HYEON S., LEE K. S.
• Publication date: 2022/04
• Languages : English
• Keywords : Modelling, Optimization, Heat sink, LED, Thermodynamic property, Expérimentation
• Source: Energies - vol. 15 - n. 7
• Formats : PDF

Thermal and luminous investigations of a pcLED based refrigerating liquid prototype.

• Author(s) : COLOMBO L., DOLARA A., GUZZETTI S., et al.
• Publication date: 2014/09
• Languages : English
• Keywords : Heat, Liquid, Cooling, Prototype, LED, Lighting
• Source: Applied Thermal Engineering - vol. 70 - n. 1

Improved radial heat sink for LED lamp cooling.

• Author(s) : COSTA V. A. F., LOPES A. M. G.
• Publication date: 2014/09
• Languages : English
• Source: Applied Thermal Engineering - vol. 70 - n. 1

Get leducated. To see or not to see.

[en russe/in russian]

• Author(s) : SAVIC A., ILIC M.
• Publication date: 2016/12
• Languages : Russian
• Keywords : Energy consumption, Comparison, Building, Measurement, Republic of Serbia, LED, Fluorescence, School, Lighting
• Source: 47^th International HVAC&R Congress and Exhibition.
• Formats : PDF

A novel automated heat-pipe cooling device for high-power LEDs.

• Author(s) : XIAO C., LIAO H., WANG Y., et al.
• Publication date: 2017/01/25
• Languages : English
• Source: Applied Thermal Engineering - vol. 111

IIR document

Thermal cooling multichip ultra high power LED using refrigeration cycle system.

• Author(s) : HSU C. N., WANG W. C.
• 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

Optimal thermal design of a horizontal fin heat sink with a modified-opening model mounted on an LED module.

• Author(s) : JEONG M. W., JEON S. W., KIM Y.
• Publication date: 2015/12/05
• Languages : English
• Source: Applied Thermal Engineering - vol. 91

IIR document

Impact of different lighting configurations in energy consumption of glass doors multideck display cases.

• Author(s) : HEIDINGER G. G., NASCIMENTO S. M., GASPAR P. D., et al.
• Publication date: 2014/06/23
• Languages : English
• Source: 3^rd IIR International Conference on Sustainability and the Cold Chain. Proceedings: London, UK, June 23-25, 2014
• Formats : PDF

Analysis of the impact of different HVAC configurations and control strategies on primary energy and cost savings for an office building.

• Author(s) : MAGNI M., OCHS F.
• Publication date: 2021/08/31
• Languages : English
• Source: 13^th IEA Heat Pump Conference 2021: Heat Pumps – Mission for the Green World. Conference proceedings [full papers]
• Formats : PDF

IIR document

Effect of energy-saving lamps on air-conditioning load business-related building.

• Author(s) : YOUICHI M., NAKAYAMA H., HIROTA M., 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

IIR document

Reduction method of air conditioning load of plant factory based on lighting experiment and plant model analysis.

• Author(s) : MORIUCHI K., UEDA Y., YOSHIDA A., 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

IIR document

Effect of different fin geometries on the thermal and hydraulic performance of PCM-compact heat exchanger.

• Author(s) : FRANK J. Y., BORMAN D. J., GREICIUNAS E., KHAN A., SUMMERS J.
• Publication date: 2024/05/31
• Languages : English
• Source: 14^th IIR Conference on Phase-Change Materials and Slurries for Refrigeration and Air Conditioning. Proceedings:  Paris France, May 29-31, 2024.
• Formats : PDF

Experimental investigation on heat transfer and pressure drop of ZnO/ethylene glycol-water nanofluids in transition.

• Author(s) : KUO J. K., HUANG C. N., LU T. H.
• Publication date: 2016/01/25
• Languages : English
• Source: Applied Thermal Engineering - vol. 93

Le circuit d'une colle biologique congelée.

The circuit of a frozen biological glue.

• Author(s) : JOULALI I., BARBEAU P.
• Publication date: 2016/09
• Languages : French
• Source: Revue générale du Froid & du Conditionnement d'air - vol. 104 - n. 1159

Recommended by the IIR

Global Cooling Pledge

• Author(s) : UNEP (United Nations Environment Programme)
• Publication date: 2023/12
• Languages : English
• Formats : PDF

Briefs: Bright future for cool LEDS

Light-emitting diodes (LED), which are replacing traditional light sources in many fields, are beginning to be used in refrigerated and frozen display cabinets and are likely to make a big impact on refrigeration for several reasons. They are more...

• Publication date : 2007/08/05

LED lighting extends the colour shelf life of meat

Researchers from Kansas State University, USA, claim they have proved that the use of LED lights in refrigerated display cabinets can improve the shelf life of fresh meat.

• Publication date : 2012/05/09

Dongbu Daewoo releases NFC-enabled smart series

A smart refrigerator "talks" to consumers through their mobile phone.

• Publication date : 2013/09/16

LNG-fuelled ships

New ships will increasingly be fuelled by LNG, and Zeus Development Corporation is monitoring LNG-fuelled non-carrier vessels: there are currently 50 and the number is growing fast.

• Publication date : 2012/08/03

Briefs: Chilled beams take off

Several MIT buildings now boast what looks like slim, fin-tubed radiators in ceiling cavities. These cooling devices are chilled beams. They use water, not air, to remove heat from a room. The potential energy reduction of using chilled beams...

• Publication date : 2010/03/07

Briefs: Chilled ceilings and beams

Chilled beams and ceilings, considered to be environmentally friendly, aesthetic, silent and energy saving, are attracting a great deal of interest. BSRIA (the Building Services Research and Information Association) estimates that the market,...

• Publication date : 2004/07/27

MArkets: Chilled ceilings and beams

Chilled ceilings and beams are booming! The latest developments have enhanced acceptance and the UK market grew 33% in 2006 compared with 2005, rising to around GBP 54 million. Tougher building regulations are raising demand for energy-efficient...

• Publication date : 2008/02/12

Storing energy thanks to cryocooled air

A new type of energy-storage process that can operate on a large scale.

• Publication date : 2012/11/29

Out of ordinary: Chilled Medieval Book

A 1000-year-old Book of Psalms has been discovered by a construction worker in Ireland and is now stored in refrigeration at the National Museum of Ireland in Dublin. The book was found in a bog and the tannic acid content of the bog is thought to...

• Publication date : 2007/02/12

Frozen produces less CO2 emissions than chilled food

A scientific report by Bristol-based Refrigeration Developments and Testing Ltd. suggests that frozen food emits less CO2 emissions than chilled food, contrary to popular belief.

• Publication date : 2012/12/19

UK: Chilled foods are not so wasteful

The UK Chilled Foods Association (CFA) has responded to criticism that the manufacture and sale of chilled prepared foods is “incredibly wasteful” compared with frozen and ambient foods. CFA emphasizes that just-in-time ingredient sourcing...

• Publication date : 2011/12/15

Bunker under highly controlled-atmosphere to measure Earth’s rotation

Equipment with extremely stable laser requires perfect mastery of air pressure and temperature.

• Publication date : 2012/08/30

For IIR members only

Global cooling pledge progress: COP29 marks key milestones in sustainable cooling initiatives

Following COP28's Global Cooling Pledge, ministers and leaders from over 30 nations convened at COP29 to map out the path forward for sustainable cooling.

• Publication date : 2024/12/11
• Subjects: General information

New low GWP replacement for R404A in hermetically-sealed systems

A new lower GWP replacement for R404A, which blends an HFO and an HFC with a “natural” refrigerant is to be made commercially available next year.

• Publication date : 2015/12/06

Dynamic controlled atmosphere for better quality apples

Dynamic Controlled Atmosphere (DCA) appeared in Canada ten years ago where O2 rates are lowered to 0.5% thanks to a sophisticated system used to monitor fruit quality during the process.

• Publication date : 2014/03/21

International activities: Danske Køledage

Highlights of this year's annual conference of the Danish Refrigeration Association held in Odense on March 15-16, 2007 include: a comprehensive presentation of the IIR given by Prof. Joachim Paul, over 30 papers on a broad range of scientific...

• Publication date : 2007/05/04

The IIR supports the Global Cooling Pledge

The IIR and several of its corporate members support this historic commitment signed during COP28.

• Publication date : 2024/01/26
• Subjects: Environment

The IIR is involved in a new project called Cool-Save

The IIR is involved in a new project called Cool-Save. This 30-month European project comprises the development and dissemination of cost-effective strategies designed to improve energy efficiency in cooling systems in the food and drink sector.

• Publication date : 2012/04/25

Winners of the IIR Scientific Awards 2019 revealed

This time round, the IIR received a record number of applications and submissions to its various awards and is delighted to announce the winners.

• Publication date : 2019/04/15

International LNG Conference and Exhibition rescheduled to 2023

The 20th International Conference and Exhibition on Liquefied Natural Gas, St Petersburg, has been rescheduled to 3 – 7 July 2023 and will be rebranded as LNG2023.

• Publication date : 2021/01/12
• Subjects: General information

Test your knowledge with the IIR Quiz: Refrigeration in Numbers

Are you up to speed on the latest figures in the field of refrigeration? Test your knowledge with the IIR Refrigeration Quiz.

• Publication date : 2016/12/01

15th IIR-Gustav Lorentzen Conference, June 13-15, 2022: the detailed programme is now available!

The detailed program of the 15th IIR Gustav Lorentzen Conference on Natural Refrigerants is now available online.

• Publication date : 2022/05/16
• Subjects: HFCs alternatives

Invitation: IIR Seminar on the "Logistics For Transport Of Foodstuffs Under Controlled Temperatures In Hot Countries"

The IIR is delighted to invite you to the IIR Seminar on the "Logistics For Transport Of Foodstuffs Under Controlled Temperatures In Hot Countries” and an IIR Working Group meeting on The Cold Chain in Hot Countries.

• Publication date : 2016/09/21

Download the IIR Seminar on the Logistics For Transport Of Foodstuffs Under Controlled Temperatures In Hot Countries presentations

Recognising the social and economic importance of this issue on a global scale, the IIR organised a seminar on the Logistics For Transport Of Foodstuffs Under Controlled Temperatures In Hot Countries on October 25, 2016 in Tunis (Tunisia).

• Publication date : 2016/12/13

Another successful IIR Gustav Lorentzen conference 2016

Dedicated to natural refrigerants, mainly ammonia, carbon dioxide and hydrocarbons, Gustav Lorentzen 2016 was a great success attracting over 270 people and more than 145 papers from leading international researchers and industrialists.

• Publication date : 2016/09/14

FRIDOC now features a selection of MDPI articles on refrigeration

About 150 articles from MDPI journals, including review articles on various refrigeration technologies, are available in FRIDOC.

• Publication date : 2022/07/28
• Subjects: General information

Registration is now open for the IIR Congress 2019

With over 1,000 abstracts selected covering all fields of refrigeration, registration is now open for the 25th International Congress of Refrigeration.

• Publication date : 2019/02/25

IIR actively involved in the French-speaking African edition of the Twinning Workshops for Montreal Protocol officers, energy policymakers and finance officials

Officials from 21 French-speaking African countries gathered in Tunis for the third Twinning Workshops, focusing on sustainable refrigeration and energy efficiency. Souhir Hammami and Marco Duran from the...

• Publication date : 2024/10/25
• Subjects: Environment

New Working Group: Cooling and Refrigeration Emissions and Energy Data Working Group (CREED)

 IIR and UNEP-led Cool Coalition are excited to announce the formation of a new working group titled "Cooling and Refrigeration Emissions and Energy Data Working Group (CREED)"

• Publication date : 2024/06/27

Highlights from the 52nd International HVACR Congress and Exhibition

The opening ceremony of the 52nd International HVACR Congress and Exhibition was led by the President of the Association for HVAC and by the Vice President of the Serbian Union of Mechanical and...

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

Cold storage conditions for fruits and vegetables

Practical recommendations for the cold storage of over 200 cultivars of fruits, vegetables and herbs (storage temperatures, relative humidity, storage time, controlled atmosphere...

• Last update : 2023/01/16
• Langues : French, English
• Themes : Fruit, Vegetables

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

For IIR members only

Heat pump stock in Europe

This table presents the stock of installed heat pumps, the CO2 emissions avoided and the number of jobs in the heat pump sector in Europe.

• Last update : 2021/12/14
• Langues : English
• Themes : Heat pumps, energy recovery: economics and statistics

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

Global HFC emissions from the refrigeration sector

This table shows HFC emissions from the refrigeration sector – including air conditioning – in million tonnes of CO2 equivalent for about 40 countries that are signatories...

• Last update : 2022/01/20
• Langues : English
• Themes : General information on environment (climate change, ozone depletion…)

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

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

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 : French, English
• Themes : HFCs

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

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)

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

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…)

Thermophysical properties of HFC refrigerants

Thermophysical properties of over 100 HFC refrigerants, including single-component and blends.

• Last update : 2022/06/17
• Langues : English
• Themes : HFCs, Blends, HFO et HCFO

Kigali Amendment status per country

List of the 163 countries that have accepted, approved or ratified the Kigali Amendment as of November 15, 2024.

• Last update : 2024/11/15
• Langues : English
• Themes : Regulations and standardization (Montreal and Kyoto Protocols…)