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IIR document

Infrared differential thermal analysis (IDTA) of multiple freezing processes.

• Author(s) : ZARAGOTAS D., LIOLIOS N. T., ANASTASSOPOULOS E.
• Publication date: 2015/08/16
• Languages : English
• Keywords : Infrared, Cooling rate, Differential thermal analysis, Nucleation, Freezing
• Source: Proceedings of the 24th IIR International Congress of Refrigeration: Yokohama, Japan, August 16-22, 2015.
• Formats : PDF

IIR document

Thermal analysis of airflow inside a refrigerated container.

• Author(s) : KAYANSAYAN N., ALPTEKIN E., EZAN M. A.
• Publication date: 2017/12
• Languages : English
• Keywords : Thermal analysis, Refrigerated transport, Heat transfer, Convection, Refrigerated container
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 84
• Formats : PDF

A review of thermal analysis on novel roofing systems.

• Author(s) : SONG Y., QU M.
• Publication date: 2014/07/14
• Languages : English
• Keywords : Thermal analysis, Roof, Building, Material, Insulation, Energy saving, Change of phase
• Source: 2014 Purdue Conferences. 3rd International High Performance Buildings Conference at Purdue.
• Formats : PDF

IIR document

Numerical analysis on thermal performance of trailer house composite envelope using vacuum insulation panels.

• Author(s) : KAN A., WANG F., YU W., et al.
• Publication date: 2015/08/16
• Languages : English
• Keywords : Thermal analysis, Composite, Performance, Insulation, Energy saving
• Source: Proceedings of the 24th IIR International Congress of Refrigeration: Yokohama, Japan, August 16-22, 2015.
• Formats : PDF

Thermal analysis and design of solid energy storage systems using a modified lumped capacitance method.

• Author(s) : JIAN Y., BAI F., FALCOZ Q., et al.
• Publication date: 2015/01
• Languages : English
• Keywords : Thermal analysis, Heat transfer coefficient, Design, Energy storage, Modelling, Thermal energy storage
• Source: Applied Thermal Engineering - vol. 75

IIR document

Transient thermal analysis of the rotary compressor during startup process.

• Author(s) : GUO N., LIN J., WU J., ZHAO Y.
• Publication date: 2024/01
• Languages : English
• Keywords : Rotary compressor, Household application, Modelling, Expérimentation, Psychrometry, Heat transfer, Thermal analysis, Transient state
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 157
• Formats : PDF

IIR document

A thermal performance analysis for multilayer insulation used in cryogenic equipment applications.

• Author(s) : SPIRIDON S. I., STEFAN L., IONITA G., et al.
• Publication date: 2016/06/22
• Languages : English
• Keywords : Thermal analysis, Equipment, Multilayer insulation, Energy saving, Cryogenics
• Source: 1^st IIR International Conference of Cryogenics and Refrigeration Technology (ICCRT 2016). Proceedings: Bucharest, Romania, June 22-25, 2016.
• Formats : PDF

IIR document

Experimental analysis of the thermal behavior of a GM cryocooler based on linear system theory.

• Author(s) : SOSSO A., DURANDETTO P.
• Publication date: 2018/08
• Languages : English
• Keywords : Thermal analysis, Impedance, Design, Temperature, Expérimentation, Cryocooler
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 92
• Formats : PDF

IIR document

The preparation of paraffin/EVA/graphene phase change materials and its thermal properties analysis.

• Author(s) : WANG C., ZHANG X., LIU Z.
• Publication date: 2019/08/24
• Languages : English
• Keywords : Thermal conductivity, Thermal analysis, Paraffin, Temperature, Energy storage, PCM, Expérimentation, Melting
• Source: Proceedings of the 25^th IIR International Congress of Refrigeration: Montréal , Canada, August 24-30, 2019.
• Formats : PDF

Thermal performance calculation and analysis of heat transfer tube in super open rack vaporizer.

• Author(s) : PAN J., LI R., LV T., et al.
• Publication date: 2016/01/25
• Languages : English
• Keywords : Thermal analysis, Tube, Heat transfer, Performance, Modelling, LNG
• Source: Applied Thermal Engineering - vol. 93

Transient thermal and structural analysis of cylinder and bolted joints on BOG compressor during starting process.

• Author(s) : WEI L., YAN Y., LI Y., et al.
• Publication date: 2016/07/11
• Languages : English
• Keywords : Thermal analysis, Gas, Seal, LNG, Starting, Cylinder, Compressor
• Source: 2016 Purdue Conferences. 23^rd International Compressor Engineering Conference at Purdue.
• Formats : PDF

Precise simulation analysis of the thermal field in mass concrete with a pipe water cooling system.

• Author(s) : LIU X., ZHANG C., CHANG X., et al.
• Publication date: 2015/03
• Languages : English
• Keywords : Thermal analysis, Structure, Refrigerating system, Pipe, Concrete, Design, Construction
• Source: Applied Thermal Engineering - vol. 78

Thermal analysis and optimization of an ice and snow melting system using geothermy by super-long flexible heat pipes

• Author(s) : WANG X., ZHU Y., ZHU M., et al.
• Publication date: 2017/02/05
• Languages : English
• Keywords : Thermal analysis, Ice, Heat pipe, Geothermy, Snow, Heat transfer, Melting
• Source: Applied Thermal Engineering - vol. 112

IIR document

Thermal and economic analysis of an energy system of an ORC coupled with vehicle air conditioning.

• Author(s) : YUE C., YOU F., HUANG Y.
• Publication date: 2016/04
• Languages : English
• Keywords : Thermal analysis, Rankine, Car, Heat recovery, Pressurization, Engine, Energy efficiency, Air conditioning
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 64
• Formats : PDF

IIR document

Thermal analysis of high-temperature proton exchange membrane fuel cell integrated compression-assisted absorption heat pump system.

• Author(s) : LIANG Y., ZHANG X., CAI L.
• Publication date: 2023/03
• Languages : English
• Keywords : High temperature, Fuel cell, Membrane, Waste heat, Heat recovery, Thermal analysis, Performance, Cooling capacity, Modelling, COP, Exergy, Heating, Heat pump, Absorption system, Compression system
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 147
• Formats : PDF

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

Solar cooling: Perspectives in Australia

A paper by P. Kohlenbach and M. Dennis1 presented at the 9th IIR Gustav Lorentzen Conference on Natural Refrigerants in Sydney gave an outlook and future perspectives on solar cooling in Australia, focusing on a comparison between the current...

• Publication date : 2011/02/04

Energy saving initiatives for cooling in data centres

In January 2021, Europe’s leading cloud and data centre operators signed the Climate Neutral Data Centre Pact, a self-regulatory initiative to become climate neutral by 2030. According to recent studies, free...

• Publication date : 2021/02/25
• Subjects: Environment, 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

2005 AHR Expo Innovation award winners

The winners of the third annual AHR (Air Conditioning, Heating and Refrigeration) Expo Innovation awards will be honoured during a ceremony during the 2005 AHR Expo in Orlando, Florida, on February 8, 2005. The product entries were judged for...

• Publication date : 2004/12/22

North American geothermal heating and cooling markets

Geothermal heating and cooling technologies may hold the key for an increase in overall energy efficiency in non-residential buildings.

• Publication date : 2013/10/02

An award-winning industrial dairy using an integrated heat pump system

A recent case study examined the energy consumption and system performance of an innovative integrated heat pump system of a dairy located in Norway. This dairy was among the winning projects of the 2019 “Heat...

• Publication date : 2021/03/29
• Subjects: Environment, Technology

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

The impact of humidity on global demand for cooling energy

Recent studies have highlighted the countries most affected by the need to adapt to rising temperatures. Assessing the impact of humidity on perceived temperatures also stresses out...

• Publication date : 2023/09/25
• Subjects: General information

PCM thermal energy storage for indoor environments

During the IIR PCM 2018 conference which took place on May 21-23 in Orford, Canada, numerous applications of phase-change materials (PCMs) and slurries were presented, including in commercial refrigeration (refrigerated display cabinets), domestic...

• Publication date : 2018/06/22

Reducing the economic costs of a direct-use geothermal heating system

Italian researchers have modelled a polymer heat exchanger to reduce the cost of a direct-use geothermal heating system for a single building in the active volcano district of the...

• Publication date : 2022/02/21
• Subjects: Technology

GL2012 highlights: photovoltaic vs solar thermal cooling in Europe

In their paper presented during the 10th IIR Gustav Lorentzen Conference on Natural Refrigerants in June 2012, Kohlenbach et al. give an outlook of the current and potential situation of solar cooling in Europe.

• Publication date : 2012/11/26

Higher AC setting temperatures to reduce thermal discomfort and energy demand in warm countries

Using data from four cities in India, Philippines, and Thailand, a recent study found that occupants experience thermal discomfort from unnecessarily low air conditioning (AC) temperature settings. Warmer indoor...

• Publication date : 2020/11/27

Performance comparison of R1234yf and R134a

A study published in Applied Thermal Engineering compares the performance of HFC-134a and HFO-1234yf as drop-in alternative in automotive air conditioning systems.

• Publication date : 2017/05/24

Road to COP28. Energy efficiency and recovery of refrigerants

“Sustainability must refer to energy efficiency and circularity”, says Dr Laura Fedele, IIR expert. 

• Publication date : 2023/04/26
• Subjects: Technology, General information

New IIR Informatory Note on Solar Cooling 

Discover the latest IIR Informatory Note that provides a detailed analysis of solar cooling: an environmentally friendly and promising technology.

• Publication date : 2020/12/22
• Subjects: Technology

EU project ENOUGH offers PhD scholarship at CNR-ITC in Padova (Italy)

A PhD scholarship will be offered as part of the Horizon 2020 project ENOUGH. The European project will aim to provide technologies, tools and methods to contribute to the EU Farm to Fork strategy to achieve...

• Publication date : 2022/02/15
• Subjects: Technology, Environment

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

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

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

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