Search results

Two-stage double-effect ammonia/lithium nitrate absorption cycle.

• Author(s) : VENTAS R., LECUONA A., VEREDA C., et al.
• Publication date: 2016/02/05
• Languages : English
• Keywords : Lithium, Ammonia, Absorption system, Two-stage system, Performance, Nitrate
• Source: Applied Thermal Engineering - vol. 94

IIR document

Thermal conductivity of ammonia + lithium nitrate and ammonia + lithium nitrate + water solutions over a wide range of concentrations and temperatures.

• Author(s) : CUENCA Y., SALAVERA D., VERNET A., et al.
• Publication date: 2014/02
• Languages : English
• Keywords : Thermal conductivity, Lithium, Temperature, Transient state, Ammonia, Absorption system, Solution, Nitrate, Concentration, Water
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 38
• Formats : PDF

Experimental results of a direct air-cooled ammonia–lithium nitrate absorption refrigeration system.

• Author(s) : LLAMAS-GUILLÉN S. U., CUEVAS R., BEST R., et al.
• Publication date: 2014/06
• Languages : English
• Keywords : Refrigerating system, Lithium, Ammonia, Absorption, Prototype, Nitrate, Expérimentation
• Source: Applied Thermal Engineering - vol. 67 - n. 1-2

IIR document

Viscosity and mass diffusion coefficient of ammonia/ethylammonium nitrate mixtures.

• Author(s) : RIVES R., SALAVERA D., CORONAS A.
• Publication date: 2021/09/01
• Languages : English
• Keywords : Viscosity, Mass, Ammonia, Nitrate, Mixture, Expérimentation, Absorption system, Diffusion, Modelling, Thermodynamic property
• Source: 6^th IIR Conference on Thermophysical Properties and Transfer Processes of Refrigerants
• Formats : PDF

IIR document

Part-load characteristics of a new ammonia/lithium nitrate absorption chiller.

• Author(s) : ZAMORA M., BOUROUIS M., CORONAS A., et al.
• Publication date: 2015/08
• Languages : English
• Keywords : Lithium, Control (automatic), Chiller, Ammonia, Absorption system, Prototype, Nitrate, Part load
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 56
• Formats : PDF

Performance analysis of an absorption double-effect cycle for power and cold generation using ammonia/lithium nitrate.

• Author(s) : VENTAS R., LECUONA A., VEREDA C., et al.
• Publication date: 2017/03/25
• Languages : English
• Keywords : Electricity, Lithium, Cooling, Ammonia, Absorption, Performance, Modelling, Nitrate
• Source: Applied Thermal Engineering - vol. 115

Estudio experimental de pérdida de carga en un eyector-absorbedor adiabático con la disolución amoniaco-nitrato de lithio.

Experimental study of the pressure drop in an adiabatic ejector-absorber with an ammonia-lithium nitrate solution.

• Author(s) : VEREDA C., VENTAS R., LECUONA A., et al.
• Publication date: 2016/05/03
• Languages : Spanish
• Keywords : Lithium, Ammonia, Hybrid system, Nitrate, Ejector, Refrigerant charge, Absorber
• Source: CYTEF 2016. VIII Congreso Ibérico y VI Congreso Iberoamericano de las Ciencias y Técnicas del Frío, Coimbra-Portugal, 3-6 mayo, 2016.
• Formats : PDF

IIR document

Estimation of differential heat of dilution for aqueous lithium (bromide, iodide, nitrate, chloride) solution and aqueous (lithium, potassium, sodium) nitrate solution used in absorption cooling systems.

• Author(s) : ASFAND F., BOUROUIS M.
• Publication date: 2016/11
• Languages : English
• Keywords : Bromide, Lithium, Dilution, Differential thermal analysis, Aqueous solution, Absorption system, Sodium, Potassium, Iodide, Nitrate, Water-lithium bromide, Chloride
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 71
• Formats : PDF

Numerical simulation on heat transfer performance of silicon carbide /nitrate composite for solar power generation.

• Author(s) : ZHOU R., CHEN X., LU Y., et al.
• Publication date: 2016/07/11
• Languages : English
• Keywords : Heat transfer, Simulation, Silicon, Performance, PCM, Nitrate, Solar energy, Thermal energy storage
• Source: 2016 Purdue Conferences. 16th International Refrigeration and Air-Conditioning Conference at Purdue.
• Formats : PDF

IIR document

Pre-industrial development and experimental characterization of new air-cooled and water-cooled ammonia/lithium nitrate absorption chillers.

• Author(s) : ZAMORA M., BOUROUIS M., CORONAS A., et al.
• Publication date: 2014/09
• Languages : English
• Keywords : Lithium, Ammonia, Air, Absorption system, Prototype, Nitrate, Expérimentation, Air conditioning, Water, Absorber
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 45
• Formats : PDF

Performance analysis of a triple-effect absorption cooling cycle using aqueous (lithium, potassium, sodium) nitrate solution as a working pair.

• Author(s) : ÁLVAREZ M., ESTEVE X., BOUROUIS M.
• Publication date: 2015/03/25
• Languages : English
• Keywords : Lithium, Aqueous solution, Absorption system, Sodium, Mixture, Potassium, High temperature, Nitrate
• Source: Applied Thermal Engineering - vol. 79

IIR document

Direct vapor ammonia generation inside a concentrating parabolic trough solar collector for an ammonia/lithium nitrate absorption machine. Theoretical study.

• Author(s) : FAMIGLIETTI A., LECUONA A., NOGUEIRA J. I., et al.
• Publication date: 2018/06/18
• Languages : English
• Keywords : Solar collector, Renewable energy, Lithium, Ammonia, Absorption system, Modelling, Nitrate, Solar cooling
• Source: 13^th IIR Gustav Lorentzen Conference on Natural Refrigerants (GL2018). Proceedings. Valencia, Spain, June 18-20th 2018.
• Formats : PDF

IIR document

New correlations of some thermophysical properties of alkali nitrate/nitrite aqueous solutions for absorption heat pumps and refrigeration systems activated at high temperature.

• Author(s) : VARGAS P., FITO J., SALAVERA D., et al.
• Publication date: 2015/08/16
• Languages : English
• Keywords : Thermal property, Aqueous solution, Absorption system, Absorbent, Physical property, Heat pump, High temperature, Nitrite, Nitrate
• Source: Proceedings of the 24th IIR International Congress of Refrigeration: Yokohama, Japan, August 16-22, 2015.
• Formats : PDF

Preliminary assessment of an ammonia-lithium nitrate absorption system.

• Author(s) : DOMINGUEZ-INZUNZA L. A., HERNÁNDEZ-MAGALLANES J. A., GUTIERREZ-URUETA G., et al.
• Publication date: 2014/03/02
• Languages : English
• Keywords : Lithium, Tube, Design, Ammonia, Absorption system, Performance, Nitrate, Testing
• Source: International sorption heat pump conference (ISHPC2014), College Park, United States, March 31-April 2, 2014.
• Formats : PDF

Comparison of the performance of single-effect, half-effect, double-effect in series and inverse and triple-effect absorption cooling systems operating with the NH3–LiNO3 mixture.

• Author(s) : DOMINGUEZ-INZUNZA L. A., HERNÁNDEZ-MAGALLANES J. A., SANDOVAL-REYES M., et al.
• Publication date: 2014/05
• Languages : English
• Keywords : Lithium, Ammonia, Absorption, Performance, Nitrate, Solar energy
• Source: Applied Thermal Engineering - vol. 66 - n. 1-2

The European Commission has initiated an evaluation of the Regulation n°1005/2009 on ozone-depleting substances (ODS)

The European Commission recently published a roadmap ahead of the evaluation of the effectiveness of European ODS Regulation n°1005/2009.

• Publication date : 2017/09/05
• Subjects: Regulation

Latest research on ammonia-based absorption refrigeration systems

A recent article has reviewed literature on absorption chillers that use ammonia as a refrigerant, along with water (H2O), lithium nitrate (LiNO3), and lithium nitrate + water...

• Publication date : 2021/02/25
• Subjects: Technology

New energy-efficient way to make ammonia

The traditional way of manufacturing ammonia leaves a huge carbon footprint. An Australian team of researchers have found a cheaper and greener way to make ammonia from air, water, and renewable electricity....

• Publication date : 2021/02/08
• Subjects: Environment, HFCs alternatives

Ice Gurus

Ice tailoring appears to be the new Olympic challenge. Ice must be tailored to each athlete's needs, e.g. long-track speed skaters prefer a surface as low as -7 to -8°C, whilst figure skaters need to dig their skates into the ice in order to pull...

• Publication date : 2006/05/05

The lifetime cost of a magnetic refrigerator

A research paper published in the International Journal of Refrigeration demonstrates the lifetime cost of a magnetic refrigerator.

• Publication date : 2016/08/10

Bangladesh Kicks Off Green Cooling Initiative to Phase Out HFCs in Line with Montreal Protocol

Bangladesh initiates efforts towards green cooling solutions with a workshop addressing the transition from HFCs to eco-friendly refrigerants. 

• Publication date : 2024/08/01
• Subjects: Developing country

New radiative cooling technology promises breakthrough for vertical surfaces

A new radiative cooling material designed for vertical surfaces demonstrates cooling 2.5°C below ambient, offering solutions for urban heat. 

• Publication date : 2024/12/13

Nanoe ™ X technology could inhibit COVID19 in air conditioners

Panasonic has developed an ionizer that inhibits certain pathogenic microorganisms (including viruses). Recent tests seem to demonstrate its effectiveness on COVID-19. 

• Publication date : 2020/11/26

Personal thermal comfort thanks to a dual-mode textile

Scientists at Stanford University, California (US) have demonstrated a dual-mode textile that can perform both passive radiative heating and cooling using the same piece of textile.

• Publication date : 2018/05/22

Edible carrot films display food packaging potential

Barrier properties exhibited by carrot-based edible films demonstrate potential for their use as packaging for a variety of food types, according to recent research from China.

• Publication date : 2011/12/27

Cooling cardiac arrest patients improves survival

Research presented at the American Heart Association’s Scientific Sessions 2012 demonstrates that cooling patients resuscitated after sudden cardiac arrest in order to achieve a lower body temperature increases survival.

• Publication date : 2013/02/20

IIR 2023 conference in Ohrid: focus on CO2 heat pumps

As demonstrated at the last IIR conference in Ohrid , heat pumps are a potential development area for the use of CO2, in particular for the thermal management of electric vehicles. 

• Publication date : 2023/05/26
• Subjects: Technology

A refrigeration system to produce freshwater in arid areas

A team of researchers from Shanghai Jiao Tong University in China demonstrated how integrating adsorption cooling and a heat pump system can improve the productivity of an...

• Publication date : 2024/05/29
• Subjects: Technology

Behold the 9-day fresh strawberry: new approach to slowing rot doubles berry shelf life

A study has demonstrated that low irradiance ultra-violet (UV) light directed at strawberries over long exposure periods at low temperature and very high humidity (typical home refrigerator conditions) delays spoilage.

• Publication date : 2013/09/04

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

New IIR Informatory Note on high-temperature heat pumps

IRR’s latest Informatory Note demonstrates that high-temperature heat pumps are a key technology in the decarbonisation of process industries. 

• Publication date : 2021/10/22

New IIR Informatory Note on passive cooling

The IIR’s latest Informatory Note demonstrates that passive cooling technologies can contribute significantly to reducing energy demand for air conditioning. 

• Publication date : 2022/04/29
• Subjects: Technology

New IIR Working Group on Solid-State Cooling and Heating

Initiated by Andrej Kitanovski (Slovenia), this working group's first objective is to promote international research collaboration in the areas of solid-state cooling, heat pumps, and energy...

• Publication date : 2022/07/08

Webinar: EU Project CryoHub comes to a close

Register to the webinar on March 17, 2021 to hear from experts on how the CryoHub technology was developed and demonstrated at a refrigerated facility at Frigologix in Belgium.

• Publication date : 2021/01/13
• Subjects: Technology

New IIR Informatory Note on thermal energy storage systems

IIR’s latest Informatory Note demonstrates that a well-designed TES system can reduce energy consumption through more efficient equipment operation and lower investment costs, thus reducing the equipment...

• Publication date : 2022/01/28

CryoHub to share results of implementation of innovative energy storage technique

Register now for our Webinar on 17th March 2021 to hear from experts on how the CryoHub technology was developed and demonstrated at a refrigerated facility at Frigologix in...

• Publication date : 2021/01/27

CryoHub Webinar

CryoHub the EU funded project to demonstrate the potential for cryogenic energy storage at refrigerated warehouses will hold a webinar on 17th March 2021 to share findings and results of this work.

• Publication date : 2020/11/27

IJR Editorial: The IIR on the board of the international network of women in cooling

Women are significantly and visibly under-represented in the refrigeration industry. A preliminary evaluation has demonstrated that around 6% of women are members of national refrigeration and air-conditioning...

• Publication date : 2023/01/09

IIR advocates for sustainable air conditioning solutions at HBRC event in Cairo

IIR played a prominent role in the HBRC International Conference held in Cairo from 14 to 17 December 2024. Its representatives led discussions on sustainable air conditioning, emphasising its technical and...

• Publication date : 2024/12/19

Obituary: Carole Bond 

We were deeply saddened to learn that Carole Bond, a former pioneer of the IIR Working Group CaRe (Careers in Refrigeration), passed away last November. 

• Publication date : 2022/12/13

News from IIR members: Carrier Transicold

Carrier Transicold has received the John Connell Enterprise in Quiet Transport Award 2011 presented by the Noise Abatement Society. The award comes as recognition of breakthroughs embodied in its quiet Vector TM 1550 City refrigeration unit.

• Publication date : 2012/06/06

Publish your PhD thesis in Fridoc!

The IIR offers as a new service, referencing and making available in open access on its website, PhD theses dedicated to refrigeration.

• Publication date : 2015/09/15

Student Networking at ICR 2023: An afternoon dedicated to young people!

At ICR 2023, Wednesday, August 23 was punctuated by an afternoon dedicated to young people! 

• Publication date : 2023/09/04

Workshop on Supermarkets during the 5th IIR Conference on Sustainability and the Cold Chain

The workshop had the aim of presenting recent findings by the UK EUED joint project on supermarkets, the SuperSmart project and the HPT Annex44 project.

• Publication date : 2018/04/19

Conference overview: Sustainable Management of Refrigeration Technologies in Marine and Off-Shore Fisheries Sectors

In partnership with the UNEP, ASHRAE and UNIDO, the IIR organised a conference in Bangkok (Thailand) in April 2017 on the Sustainable Management of Refrigeration Technologies in the Marine Sector and Offshore Fisheries.

• Publication date : 2017/05/31

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

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)

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

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