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Annual thermal performance assessment for an economized vapor injection system in hot climate.
Évaluation de la performance thermique annuelle d'un système à injection de vapeur à économiseur dans un climat chaud.
IIR document
R744 refrigeration technologies for supermarkets in warm climates.
Improved transcritical CO2 refrigeration systems for warm climates.
Feasibility of solar-geothermal hybrid source heat pump for producing domestic hot water in hot climates.
Adaptation de l’ATP aux climats chauds.
Adaptation of ATP to hot climates.
Computational analysis of cross ventilation for spaces with operable transom windows in hot and humid climate.
Sizing and control design of solar thermal absorption refrigeration for horticultural cold storage in hot-humid climates.
Comparativa de sistemas de subenfriamiento en ciclos de refrigeración de CO2 en climas cálidos.
Comparison of subcooling systems in CO2 refrigeration cycles in hot climates.
CO2 refrigeration system with integrated propan subcooler for supermarkets in warm climate.
Characteristics of energy consumption by building type of a U.S. navy installation in hot and humid climate.
Energy and environmental comparison of commercial R744 refrigeration systems operating in warm climates.
Integrated CO2 refrigeration and AC unit for hot climates.
Exergoeconomic analysis of a variable area solar ejector refrigeration system under hot climatic conditions.
Evaluación energética de distintas arquitecturas booster con CO2 para refrigeración comercial en climas cálidos.
Energy evaluation of various CO2 booster architectures for commercial refrigeration in hot climates.
Investigation on CO2 hybrid ground-coupled heat pumping system under warm climate.
Refrigeration sector monitoring
97 results
A transcritical CO2 system efficient in hot countries
A transcritical CO2 refrigeration system was presented during the retail trade fair Euroshop 2017.
A refrigerated bag to preserve vaccines in hot climates
An autonomous refrigerated bag is currently developed in Burkina Faso. It could preserve vaccines between 2 ans 8 °C.
Cold storage: sustainable solutions for developing countries with hot climates
Two papers from the recent IIR Congress illustrate the importance of developing the cold chain in developing countries with warm climates. In particular, in India, environmentally-friendly technical solutions...
Alternatives to HCFCs/HFCs in warm developing countries
Öko-Recherche considers that “in developing countries, approx. 90% of HCFCs and high-GWP HFCs can be replaced by substances with low or moderate GWP.
Green roofs can reduce cooling demand in warm climate zones
The impact of green roofs on building energy performance was assessed in 15 climate zones. In most regions, the reduction in energy demand for cooling was greater than for...
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...
Solar-powered off-grid cooling: An innovative prototype for remote areas
An innovative solar-powered refrigerator could transform the preservation of perishable goods in areas without electricity.
Mini containers, an energy-efficient solution for small farmers?
To benefit small growers, a team of researchers investigated the concept of mini containers that would consume less energy and produce fewer GHG emissions than conventional full-size...
How to reuse the condensate water from air conditioners?
Review of the different uses of the condensate water rejected by air conditioners.
An air-conditioned jogging track in a park in Qatar
A 50,000 m² park opened in Al Gharrafa, Qatar. It has the particularity of being equipped with a fully air-conditioned track for pedestrians and joggers.
Meeting the cooling and freshwater needs of arid countries
In a recent review article, the authors summarised research efforts in meeting cooling and freshwater demands in arid and hot climates, using available solar...
Innovative cooling garment for electricians in extreme heat
A new cooling garment using phase change materials (PCMs) promises to protect electricians working in extreme heat environments.
Passive cooling can reduce energy demand by 35 to 70% in the ASEAN residential sector
Among countries of the Association of Southeast Asian Nations (ASEAN), a study showed that integrating passive cooling strategies into building design can reduce cooling energy...
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.
Energy efficiency of the cooling systems used in data centres is a key issue
The number of data centres has grown to around 45 million worldwide, global energy consumption of data centres has doubled over the last 5 years and currently reaches 123 TWh/year, i.e. 1% of global electricity consumption.
IIR news
33 results
1st IIR-UNEP Joint Experts’ Round-Table on Cold Chain Management in Hot Climates
In collaboration with the United Nations Environment Programme (UNEP), the IIR is proud to announce the 1st IIR-UNEP Joint Experts’ Round-Table on Cold Chain Management in Hot Climates.
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...
Event update: 1st IIR-UNEP Joint Experts’ Round-Table on Cold Chain Management in Hot Climates
The IIR and UNEP organise a Joint Experts’ Round-Table on Cold Chain Management in Hot Climates.
Download the IIR Seminar on the Logistics For Transport Of Foodstuffs Under Controlled Temperatures In Hot Countries presentations
Recognising the social and economic importance of this issue on a global scale, the IIR organised a seminar on the Logistics For Transport Of Foodstuffs Under Controlled Temperatures In Hot Countries on October 25, 2016 in Tunis (Tunisia).
World Bank project in Bangladesh
The IIR has just signed an agreement with the World Bank to develop a cold chain, as sustainable as possible of course, in Bangladesh, in partnership with British and Bangladeshi universities.
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.
SophiA Final Consortium Event: The IIR’s Strong Involvement in Sustainable Refrigeration Solutions for Africa
The Final Consortium Meeting of the SophiA Project took place in Karlsruhe, Germany, on 17–18 September 2025, co-organised by the International Institute of Refrigeration (IIR) and Hochschule Karlsruhe...
New IIR Informatory Note on evaporative cooling
The latest IIR Informatory Note highlights that evaporative cooling is an energy-efficient technology that has many applications in air conditioning but also in short-term food storage.
IIR Seminar in Tunis brings to the forefront the social and economic strategic importance of the cold chain
Recognising the social and economic importance of this issue on a global scale, the IIR organised a seminar on the Logistics For Transport Of Foodstuffs Under Controlled Temperatures In Hot Countries on October 25, 2016 in Tunis (Tunisia),...
Invitation: IIR Seminar on the "Logistics For Transport Of Foodstuffs Under Controlled Temperatures In Hot Countries"
The IIR is delighted to invite you to the IIR Seminar on the "Logistics For Transport Of Foodstuffs Under Controlled Temperatures In Hot Countries” and an IIR Working Group meeting on The Cold Chain in Hot Countries.
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.
Now available: ICCC 2018 conference papers and proceedings
Couldn't attend the 5th IIR Conference on Sustainability and the Cold Chain (ICCC 2018) in Beijing, China, last month? Download the conference proceedings and papers.
The 27th IIR Informatory Note on evaporative cooling.
This 27th IIR Informatory Note provides a state of the art of the simple and practical technology that is Evaporative Cooling.
Press release: Strengthening Cold Chains: UNEP and IIR Release Three Technology Briefs and Announce Webinar Series
Nairobi, 3 November 2025 — The International Institute of Refrigeration (IIR) and the United Nations Environment Programme (UNEP) OzonAction are pleased to announce the release of three new Cold Chain Technology Briefs that address...
How to adapt in a world at 50°C? Learn more at the IMechE conference this September
On September 6-8, 2023, the Institution of Mechanical Engineers (IMechE) will host its 1st International Conference and Workshop on Climate Adaptation and Resilience in London.
