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IIR document
Air infiltration into walk-in cold rooms through doors.
Recommended by the IIR / IIR document
Cold Chain Technology Brief: Walk-In Cold Rooms in Article 5 Countries
Control optimization for cold-room (walk-in) refrigeration units.
Off-grid cold room with latent thermal.
CFD analysis of dairy cold room: a case study.
Experimental characterization of demand response in a refrigerated cold room.
Temperature inhomogeneity in a cold room: An experimental investigation with and without ducts.
WALK-IN COLD ROOMS, A PRACTITIONER'S TECHNICAL GUIDE - Design and Operation of Walk-In Cold Rooms for Precooling and Storage of Fresh Produce in Hot Climates, in Off-Grid and Unreliable Grid Situations.
Cold room control, efficiency and analysis based on IoT connected cloud services.
Experimental analysis on a novel air heat exchanger containing PCM (Phase Change Material) in a cold room.
Comparative experimental study of low GWP alternative for R134a in a walk-in cold room.
3D and transient numerical modeling of door opening and closing processes and its influence on thermal performance of cold rooms.
Application of demand response in cold room: evaluation of energy performance using different modelling approaches.
3D and transient numerical modelling of door opening and closing processes and its influence on thermal performance of cold rooms
Refrigeration sector monitoring
128 results
India: solar-powered micro cold rooms
Solar-powered micro cold rooms using phase-change materials could be a solution for small farmers in India.
ColdHubs: Revolutionising Nigerian agriculture with solar-powered cold rooms and empowering farmers
ColdHubs, founded by Nnaemeka Ikegwuonu, provides walk-in solar-powered cold rooms to combat post-harvest crop spoilage among small-scale farmers in Nigeria through Cooling-as-a-Service (CaaS). Their latest...
Blueprint for a sustainable off-grid solar-powered cold room 20% cheaper than state of the art
In June 2025, Efficiency for Access published a report on constructing a sustainable solar-powered cold room using natural and locally available materials. Their design reduced embedded GHG emissions by 63% and...
Booming cold storage industry in Brazil
The total capacity of Brazilian public refrigerated warehouses (PRW), which was less than 100,000 m3 in 1970 exceeds 4 million m3. The main reason of this boom is rapid growth of the agribusiness sector. Brazil has the world's largest commercial...
China cold chain industry expected to boom
With the sustained economic development, fast increase in demand for food, drugs and cosmetics, cold chain logistics industry in China will undergo a rapid growth.
ICCC2020 highlights: Benefits of IoT technologies for cold chain management
Internet of Things and cloud services are promising solutions for smart management and maintenance of the multiple cold rooms of supermarket chains.
Cooling as-a-Service in Nigeria : ColdHubs 2024 impact report
Through a Cooling-as-a-Service (CaaS) mechanism, 58 solar-powered cold rooms have helped thousands of Nigerian farmers to avoid over 13,800 kilograms of food loss in 2024.
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...
Brief: WHO
WHO has donated three walk-in vaccine storage cold rooms worth 1.5 million birr (over 140 000 €) to Ethiopia. Two of the 30 m3 cold rooms were installed in Addis Ababa and the other in Mekele. They will be used to store USD 5 million worth of...
Briefs: Sustainable fishery in Namibia
Since November 2009, Hangana Seafood has a new pre-sorting facility in Walvis Bay harbour, Namibia, which uses ammonia as a refrigerant. The 2800 m² sorting facility has a 0°C chill room for holding unsorted fish, two 16°C temperature-controlled...
Reducing post-harvest food losses in sub-Saharan Africa
To strengthen the cold chain for fruit and vegetables in sub-Saharan Africa, sustainable measures and the use of precooling are recommended in a review article.
CO2 applications: First commercial CO2 system in Latin America
Last April Verdemar supermarket chain inaugurated its fifth store in the suburb of Jardim Canada, Nova Lima -Minas Gerais, Brazil. It is the first Latin American supermarket that uses carbon dioxide as a refrigerant. Its Skyrack Breeze, developed...
Berry efficient chilling
The storage and transport of berries has come a long way since they were transported by an iced horse cart in 1843. Today, growers in the Pajaro Valley from the Berry Bowl label are breaking in a brand new USD 2 million state-of-the-art flash...
Cold temperatures, a potential ally against cancer
Exposure to cold temperatures can reduce tumour growth by slowing down the glucose metabolism of cancer cells.
Nigeria needs an additional 50,000 tonnes of cold storage capacity
The President of the Organisation for Technology Advancement of Cold Chain in West Africa (OTACCWA) estimated the cold chain infrastructure required to tackle Nigeria’s annual post-harvest losses evaluated at $9...
IIR news
93 results
A new technical guide on cold rooms
On the occasion of COP 28, the IIR and Efficiency for Access, with the contribution of ESMAP, have published a new guide. It aims to provide accessible and practical guidance to enable developers, owners,...
Walk-In Cold Rooms: A Practitioner’s Technical Guide
In many developing countries, agriculture is crucial to livelihoods, and developing the cold chain from field to table can boost incomes and stimulate economic growth. Cold stores are an essential link in the...
Walk-in cold rooms: webinar replay and slides now available
Thank you for taking part in our second webinar! You can now download the slides and watch the replay on the IIR YouTube channel. Furthermore, the overview guide is also available in...
Join our second Webinar on Walk-In Cold Rooms on June 11!
Book your seat! Register to the second webinar in our '"Cool Insights" series highlighting the use of walk-in cold rooms for precooling and storage of fresh produce in the Global South.
IIR website: most downloaded publications in 2023
Discover the three most popular IIR publications of 2023. The focus is on the carbon footprint of the cold chain and cold rooms!
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...
Technical visit to the Tokyo fish market
At the ICCC conference last June, attendees had the opportunity to participate in technical visits, including a tour of the Tokyo fish market. Alain Le Bail, President of IIR Commission C2, joined the visit and...
IIR reaches a key milestone: over 10 years of conferences now referenced in Web of Science
The IIR is now indexed in Web of Science, with continuous referencing starting from 2014. This highlights the quality of its conferences and its authors’ contributions, while making research more accessible to...
SophiA project: HKA Lab test progress
SophiA HKA (Karlsruhe University of Applied Sciences) Lab test is intended to provide a better understanding of the cooling system in in different climate zones.
IIR Working Party on “Energy Labelling in the Cold Chain”
The Terms of Reference of the new IIR Working Party (WP) "Energy labelling in the cold chain" have been approved. The main objective of this WP - chaired by Prof. Giovanni Cortella, Italy, and involving Commissions D1 and D2 - is to investigate...
Strengthening cold chain technologies in hot climates: IIR and UNEP lead the conversation at MOP37
Nairobi, 3 November 2025 — At the 37th Meeting of the Parties to the Montreal Protocol (MOP37), UNEP OzonAction and the International Institute of Refrigeration (IIR) hosted a dynamic side event focused on strengthening sustainable...
Member news: Mirai Intex ultra-low temperature refrigeration system at the ACHEMA trade show in Germany
Mirai Intex, corporate member of the IIR, will present its MC 15 C/W/T closed-cycle refrigeration machine at the ACHEMA trade show in August 2022 in Germany.
Upcoming cutting-edge IIR events for 2016
IIR conference activities in 2016 show a promising choice of events covering cutting-edge refrigeration themes from refrigerants to energy issues.
Sign-up to workshop at ICCC 2022: Clean and efficient refrigeration solutions for food and healthcare
Join the free online workshop on April 13 which will present the ongoing projects in developing countries that will help promote the adoption of climate-friendly refrigeration technologies.
Check out the upcoming cutting edge IIR events for 2016
IIR conference activities in 2016 show a promising choice of events.
Encyclopedia of Refrigeration
6 results
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...
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...
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...
For IIR members only
Global cold storage capacity
This table presents the cold storage capacity in about 50 countries, based on data from the Global Cold Chain Alliance (GCCA).
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...
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...
