Main menu
Search results
Search in FRIDOC
9 results
Recommended by the IIR
Overwinter storage of European beech and Norway spruce planting stock: effect of different methods and temperature conditions.
IIR document
Novel thermodynamic model for cryo-compressed-hydrogen tanks.
The dormancy of white head cabbage cv. atleta.
Prediction of dormancy period and storage life in bulb onions.
Le trayplant de Ciflorette : effet de la température sur la levée de dormance.
Ciflorette trayplants: effect of temperature of breaking dormancy.
INFLUENCE DE LA REFRIGERATION ET DE LA CONGELATION SUR LA QUALITE ET L'APTITUDE A LA GERMINATION DES GRAINES.
INFLUENCE OF CHILLING AND FREEZING ON SEED QUALITY AND GERMINABILITY.
INFLUENCE OF STORAGE TEMPERATURES ON EARLY SPROUTING AND DISEASES OF ONION BULBS.
Influence of different histories of the inoculum on lag phase and growth of Listeria monocytogenes in meat models.
Influence de la réfrigération et de la congélation sur la qualité et I'aptitude à la germination des graines.
Influence of chilling and freezing on seed quality and germination ability.
Refrigeration sector monitoring
358 results
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.
Impact of failures on the performance of refrigeration systems
An Australian study assesses the impact of failures of different refrigeration systems on their performance. Various air conditioning systems, refrigerated display cabinets and walk-in cold rooms were put to the...
New heat pump life cycle performance assessment tool
The Air-conditioning, Heating and Refrigeration Technology Institute (AHRTI) developed a tool to calculate Life Cycle Climate Performance (LCCP), using Microsoft Excel.
Not-in-kind cooling technologies performance comparison
This study proposes a quantitative comparison of refrigerants and system performance of not-in-kind cooling technologies.
Purdue highlights: R410A “drop-ins”performance
According to a paper presented at Purdue in July 2016, two new “drop-in” alternatives to R410A are said to have exhibited very similar performance in experimental tests. This paper will be available in Fridoc in te near future.
R452A performance and environmental impact in refrigerated transport
A paper presented at the IIR ICCC conference in China provides a review of R452A properties, system performance and LCCP impact as an alternative refrigerant in refrigerated transport.
Improving the energy performance of cold stores
During ICCC2013, J. Evans presented results of surveys and audits which aimed at collecting data on the energy use in various types of cold stores.
Heat exchanger design can improve the performance of PCMs
According to a recent review article, optimising the design of heat exchangers in latent heat thermal energy storage systems (LHTES) is one way of improving the thermal conductivity of phase change materials...
Household refrigerators: HFO performance as drop-in replacement for R-134a
During the IIR co-sponsored International Refrigeration and Air-conditioning Conference at Purdue in 2012, K.M Karber et al. from Oak Ridge National Laboratory, United States, presented* the results of a performance test on R1234yf and R1234ze,...
IJR highlights: impacts of refrigerant charge on system performance
A team from Purdue University recently published* in the International Journal of Refrigeration a study showing the impact of charge level on capacity and efficiency for several heat-pump and air-conditioning units tested at various refrigerant...
Australia: Minimum Energy Performance Standards for commercial refrigeration now in force
As of October 1, 2004, refrigerated display cabinets manufactured in, or imported into, Australia must comply Minimum Energy Performance Standards (MEPS) which are set out in AS 1731.14-2003 Refrigerated display cabinets - Minimum energy...
A new non-flammable mixture to boost the performance of CO2 systems
In a recent IJR article, researchers propose combining R744 with Dimethyl-ether (DME) to boost system performance while ensuring safety and low environmental impact, in a recent IJR...
Temperature and energy performance of domestic cold appliances in England
A paper from A. Biglia et al.presents the results of a large-scale survey of domestic cold appliances in households in England, UK. Simultaneous measurements of the temperature inside and outside of the cold appliances, as well as the electricity...
Promising performances for a PCM used in refrigerated transport
British and Chinese scientists collaborated to develop a refrigerated container which can keep the inside temperature between 5 and 12°C for up to 120 hours.
Use of ejectors for performance improvement in CO2 commercial refrigeration systems
Expansion work recovery by means of a two-phase ejector is an attractive option for improving the efficiency of CO2 commercial refrigeration systems. Transcritical CO2 systems have relatively large throttling loss, meaning that they offer the...
IIR news
96 results
IIR Working Group publishes Guidelines for Life Cycle Climate Performance
The Guidelines for Life Cycle Climate Performance (LCCP) provide a harmonised method to calculate the LCCP for all types of stationary air conditioning, heat pumping and refrigeration systems.
Discover the 32nd IIR Informatory Note on the “Harmonization of Life Cycle Climate Performance Methodology”
This Informatory Note summarises the LCCP guidelines prepared by the Working Group. It provides recommended assumptions and data sources for different types of units, presents the various existing LCCP tools and outlines usages and limitations of...
Catch up on the IIR Working Group on LCCP evaluation in Chicago
IIR Working Group on Life Cycle Climate Performance (LCCP) evaluation continues to make impressive headway.
Book your spot! Training session on food refrigeration systems
From July 1 to 5 2024, Professor Don Cleland will be leading a training workshop in London entitled “Cost-Effective Refrigeration”.
New IIR Informatory Note. Low-GWP Refrigerants: Status and Outlook
The latest IIR Informatory Note outlines the options available for low-GWP refrigerants and their respective performance. It provides a series of recommendations on refrigerant...
Check out the latest news from FRISBEE!
In this issue two hot topics: the test carried out to increase refrigerator performance and field test monitoring of the food cold chain in European markets.
New in our Encyclopedia: additive manufacturing for refrigeration equipment
Additive manufacturing makes it possible to optimise the geometry and performance of cooling components such as heat exchangers and regenerators for caloric...
IIR member news: Johnson Controls YORK chiller optimised for R1233zd(E)
The YORK YZ magnetic bearing centrifugal chiller, produced by Johnson Controls, is said to be the first chiller fully optimized for ultimate performance with the low-global warming potential refrigerant R1233zd(E).
Second meeting of the IIR Working Party on LCCP Evaluation in Gaithersburg
The second meeting of the IIR Working Party on Life Cycle Climate Performance (LCCP) Evaluation took place at NIST in Gaithersburg, MD, USA.. The minutes of the meeting and other documents can be consulted on the Web page of the working party. The...
Job opportunities: Sainsbury’s is looking for young graduate engineers.
Sainsbury’s is looking for young graduate engineers: £27,000 (32,500 €) starting salary, six monthly reviews and performance relative bonus.
Heat pumps, the central theme of the recent IIR Congress
An overview of the research carried out in the field of heat pumps, with the aim of achieving greater flexibility and increased energy efficiency, in particular through to the use of thermal energy...
Available now: All 474 papers from the Purdue Conferences 2018
Welcoming 800 participants from 30 different countries, the 2018 Purdue Conferences took place at Purdue University in West Lafayette, Indiana, USA, from July 9 to 12, 2018.
New IIR Informatory Note on caloric cooling technologies
IIR’s 50th Informatory Note on refrigeration technologies focuses on three promising alternative solid-state cooling technologies: magnetocaloric, electrocaloric and...
New president of IIR Commission C2 on food science and engineering
The IIR is proud to announce the appointment of Judith Evans, Professor at London South Bank University, as the new president of IIR Commission C2 on food science and engineering.
Encyclopedia of Refrigeration
6 results
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...
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...
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...
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...
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...
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...
