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IIR document

Recent advances in ammonia dry expansion applications.

• Author(s) : JENSEN S. S.
• Publication date: 2015/08/16
• Languages : English
• Keywords : Operation, Design, Ammonia, Dry expansion evaporator, Cold store, Energy saving
• Source: Proceedings of the 24th IIR International Congress of Refrigeration: Yokohama, Japan, August 16-22, 2015.
• Formats : PDF

Recommended by the IIR / IIR document

Operating experiences with large-scale dry expansion ammonia refrigerating plant.

• Author(s) : JENSEN S.
• Publication date: 2023/04/27
• Languages : English
• Keywords : Case study, Australia, Cold store, Ammonia, Dry expansion evaporator, Low charge, Energy saving
• Source: 10^th IIR Conference on Ammonia and CO₂ Refrigeration Technologies.
• Formats : PDF

IIR document

Thermodynamic modelling of liquid overfeed and dry expansion feed central NH3 refrigeration plants to determine differences in energy performance.

• Author(s) : NITSCHKE T., JENSEN S.
• Publication date: 2019/04/11
• Languages : English
• Keywords : Control (automatic), Overfeed system, R717, Ammonia, Two-stage system, Modelling, Dry expansion evaporator, Energy efficiency
• Source: 8^th Conference on Ammonia and CO₂ Refrigeration Technology. Proceedings: Ohrid, North Macedonia, Avril 11-13, 2019.
• Formats : PDF

IIR document

Experimental analysis of a new method for overfeeding multiple evaporators in refrigeration systems.

• Author(s) : MINETTO S., BRIGNOLI R., ZILIO C., et al.
• Publication date: 2014/02
• Languages : English
• Keywords : Thermostatic expansion valve, Refrigerating system, Flooded evaporator, R744, Performance, Expérimentation, Ejector, Transcritical cycle, CO2
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 38
• Formats : PDF

IIR document

Shell side plain tube bundle performance of a multi-pass direct expansion evaporation of ammonia at various degrees of exit superheat.

• Author(s) : ABBAS A., AYUB Z. H., AYUB A. H., et al.
• Publication date: 2017/06
• Languages : English
• Keywords : Direct expansion, R717, Superheat, Expérimentation, Evaporation
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 78
• Formats : PDF

IIR document

Experimental observation of sedimentation phenomena of CO2 dry ice in model channel.

• Author(s) : YAMAGUCHI H., IWAMOTO Y., OZAKI S., et al.
• Publication date: 2014/08/02
• Languages : English
• Keywords : Two-phase flow, Refrigerating system, Dry ice, R744, Expérimentation, CO2
• Source: 11^th IIR Gustav Lorentzen Conference on Natural Refrigerants (GL2014). Proceedings. Hangzhou, China, August 31-September 2, 2014.
• Formats : PDF

IIR document

Basic performance of CO₂ cyclone refrigeration system.

• Author(s) : WAKIMOTO H., UCHI K., YAMASAKI H., YAMAGUCHI H., KAMIMURA T., HATTORI K., NEKSÅ P.
• Publication date: 2020/12/07
• Languages : English
• Keywords : CO2, Low temperature, Cascade system, Dry ice, Sublimation, Evaporator, Expérimentation, Exergy
• Source: 14^th IIR-Gustav Lorentzen Conference on Natural Refrigerants (GL2020). Proceedings. Kyoto, Japon, December 7-9^th 2020.
• Formats : PDF

IIR document

Ultra-low temperature refrigeration system of CO2 using cyclone separator/evaporator.

• Author(s) : YAMAGUCHI H., ISHIKAWA Y., YAMASAKI H., KAMIMURA T., HATTORI K., NEKSA P.
• Publication date: 2022/06/13
• Languages : English
• Keywords : Low temperature, Natural refrigerant, CO2, R744, Dry ice, Sublimation, Evaporator, Expérimentation, Performance, COP
• Source: 15^th IIR-Gustav Lorentzen Conference on Natural Refrigerants (GL2022). Proceedings. Trondheim, Norway, June 13-15^th 2022.
• Formats : PDF

Simulation of a R410A residential air-conditioning system with round-tube and/or microchannel evaporators and condensers under both dry and wet air conditions.

• Author(s) : ZOU Y., LI H., HRNJAK P.
• Publication date: 2016/07/11
• Languages : English
• Keywords : R410A, Household application, Microchannel, Simulation, Performance, Evaporator, Air conditioning, Condenser
• Source: 2016 Purdue Conferences. 16th International Refrigeration and Air-Conditioning Conference at Purdue.
• Formats : PDF

IIR document

Experimental study on system performance of ultra-low temperature cascade refrigeration system using carbon dioxide with tapered evaporator/sublimator.

• Author(s) : IWAMOTO Y., YAMASAKI H., NIU X. D., et al.
• Publication date: 2015/08/16
• Languages : English
• Keywords : Refrigerating system, Low temperature, R744, Sublimation, Performance, Cascade system, Expérimentation, Evaporator, CO2
• Source: Proceedings of the 24th IIR International Congress of Refrigeration: Yokohama, Japan, August 16-22, 2015.
• Formats : PDF

IIR document

System efficiency and energy saving with parallel compression and ejectors under flooded conditions.

• Author(s) : KRIEZI E. E., LARSEN L. F. S., PISCOPIELLO S., et al.
• Publication date: 2018/06/18
• Languages : English
• Keywords : Flooded evaporator, Ejector system, R744, Supermarket, Modelling, Energy saving, COP, CO2
• Source: 13^th IIR Gustav Lorentzen Conference on Natural Refrigerants (GL2018). Proceedings. Valencia, Spain, June 18-20th 2018.
• Formats : PDF

Recommended by the IIR / IIR document

CO2 dual source solar assisted heat pump with PV-T evaporators: performance and control of low pressure.

• Author(s) : ZANETTI E., AZZOLIN M., CONTE R., GIROTTO S., DEL COL D.
• 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

Optimization of microchannel evaporator design in HVAC&R applications using two-phase ejectors.

• Author(s) : ELBEL S., LAWRENCE N.
• Publication date: 2017/07/20
• Languages : English
• Keywords : Two-phase flow, R410A, Ejector system, Microchannel, Design, Optimization, Evaporator
• Source: 8th international conference on compressors and refrigeration, 2017.
• Formats : PDF

IIR document

Field measurement analysis of centralized refrigeration systems’ evaporators under overfeed conditions.

• Author(s) : THANASOULAS S., FEHLING S., ARIAS J., SAWALHA S.
• Publication date: 2023/08/21
• Languages : English
• Keywords : CO2, R744, Supermarket, Evaporator, Ejector system, Cabinet, Sweden, Case study
• Source: Proceedings of the 26^th IIR International Congress of Refrigeration: Paris , France, August 21-25, 2023.
• Formats : PDF

IIR document

Heat pump drying: simulation and evaluation of a drying system for clipfish with main and storage drying.

• Author(s) : BANTLE M., GULLSVAG P. E., NORDTVEDT T. S., et al.
• Publication date: 2014/06/23
• Languages : English
• Keywords : Industrial application, Energy consumption, Drying, Heat pump, Fish, Model
• Source: 3^rd IIR International Conference on Sustainability and the Cold Chain. Proceedings: London, UK, June 23-25, 2014
• Formats : PDF

Chillers: efficiency takes off

Chillers are key refrigerating systems since, according to the Department of Energy, in the US, they account for about 13% of the power consumed by the nation's buildings and 9% of the overall demand for electric power. Examples below illustrate...

• Publication date : 2008/10/25

Refrigeration innovations for the avocado market

The booming global avocado market calls for increasing standards of quality. Refrigeration technologies offer cutting-edge solutions for fruit ripening and seed preservation for future crops.

• Publication date : 2020/10/22

A low charge direct expansion evaporator system configured to use less ammonia

A US-based meat processor operates a cold storage facility that uses just 1 kg approx ammonia per kW.

• Publication date : 2018/05/17

Ejectors could improve CO2 transcritical system efficiency by up to 20% in Southern climates

Thanks to the ejectors, the annual energy efficiency improvement potential compared to traditional CO2 systems with parallel compression is between 10 to 20%, depending on the climatic region and the integration of heat recovery systems.

• Publication date : 2014/12/03

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

IIR GL2020 conference: Range of CO2 applications

Almost half of the presentations at the IIR Gustav Lorentzen conference in Kyoto focused on CO2, in commercial refrigeration systems but also in many other applications. Overview of these...

• Publication date : 2021/01/26
• Subjects: HFCs alternatives

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

The expansion of refrigeration applications of Thermal Energy Storage and PCMs

Based on a selection of papers from two recent IIR conferences, overview of thermal energy storage and PCM applications in the fields of refrigerated transport, display cabinets, fishing vessels, food processing...

• Publication date : 2021/11/29

An ejector refrigeration system optimised for sub-zero temperatures on fishing vessels

Large amounts of diesel fuel are used to power fishing vessels engines and on-board refrigeration systems. In a recent theoretical study, an energy-efficient sub-zero refrigeration system proposed based on a...

• Publication date : 2021/05/31
• Subjects: Technology

ICR2011 highlights: micro-refrigeration development

Micro-refrigeration development was one of the important themes of the IIR Congress in Prague.

• Publication date : 2011/12/15

Supermarkets: retrofit of refrigerating systems from R404A to R449A

Two examples of retrofitting supermarket refrigerating systems from R404A to R449A.

• Publication date : 2017/08/09
• Subjects: HFCs alternatives

ICCC2016 highlights: low charge ammonia systems for the cold chain

This summary refers to a paper presented during the IIR International Cold Chain Conference (ICCC2016) which took place in New Zealand. This paper can be downloaded from Fridoc database by using the direct link provided at the end of the article.

• Publication date : 2016/08/24

Reduce refrigerant leaks in supermarkets

Refrigerant leaks are a recurring problem, particularly in the commercial refrigeration sector. An American initiative aims to identify the main causes of leaks and to propose solutions to reduce...

• Publication date : 2021/12/15

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

Member news : Danfoss launches thermostatic expansion valve for CO2

Danfoss has recently launched a thermostatic expansion valve for CO2, based on its TE2 valve. It is suitable for small to medium size remote refrigeration systems such as cold rooms and display...

• Publication date : 2022/10/27

Newsletter INDEE+ | September 2023

The latest news on the INDEE+ project.

• Publication date : 2023/09/22

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 : English, French
• Themes : Caloric cooling (magnetocaloric, electrocaloric, elastocaloric and barocaloric cooling)