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Ozone-depleting chemicals detected by scientists in the atmosphere in 1951 – decades earlier than expected
An international team led by the University of Bremen, Germany, has uncovered evidence of ozone-depleting chlorofluorocarbons (CFCs) in the atmosphere as early as 1951. This finding pushes back the known...
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2 939 news
Heat flowing from a colder to a warmer body without external intervention
Researchers at the University of Zurich have developed a simple device that allows heat to flow temporarily from a cold to a warm object without external intervention by using a “thermal inductor”.
Squid skin inspires research on next-generation space blanket
Next-generation space blankets could be made of a thermoregulatory material inspired by the functioning of squid skin, which changes color.
India: air conditioning at the heart of transition from HFCs
Focus on the incentives and regulations to phase down HFCs in India.
New record for LNG trade in 2018.
Synthesis of the main trends and figures related to the LNG industry. Data based on the 2019 IGU World LNG Report presented at the 19th International Conference and Exhibition on Liquefied Natural Gas, which was co-organised by the IIR and took...
World compressor market trends
The global compressor market is still dominated by the rotary compressor segment, which has benefited from the rapid growth of the residential air-conditioning market for more than 20 years.
Heat pumps: an approach to select the highest performing refrigerant mixture
One of the most downloaded IJR articles in 2019 concludes that zeotropic mixtures have the potential to significantly improve both the thermodynamic and economic performance of heat pumps in suitable applications.
Refrigeration thanks to plastic crystals
Researchers have found that "plastic crystals" undergo particularly high temperature variations when subjected to pressure changes. These materials could be used for the development of the promising technology of barocaloric refrigeration.
Impact of heat on school results
An American study establishes a relationship between rising temperatures and lower school examination results and highlights the importance of air conditioning.
Energy efficiency comparison of air-conditioning systems in electric vehicles
A study compares the energy efficiency of conventional refrigeration systems with that of heat pumps in mobile air conditioning. R744, R134a and R1234yf are considered. Reversible heat pumps are found the most energy-efficient systems.
Solar energy improves medical healthcare in sub-Saharan Africa
UNDP develops the Solar for Health project in Zambia and Zimbabwe. More than 400 healthcare centres are now equipped with solar panels and the health products' cold chain is preserved.
Purdue conferences highlights: development of high-temperature heat pumps
High-temperature heat pumps are currently subject to intense R&D work, as illustrated by several papers presented at Purdue last year. All Purdue papers can now be downloaded from the Fridoc database.
World’s most powerful MRI machines push the limits of human imaging
Latest MRI machines, developed in the US and in France and designed to operate under ultra-high magnetic strength thanks to giant superconducting magnets, should notably allow major advances in the understanding of neurological diseases.
Quantum refrigerators: research is making progress
Two recent studies illustrate the progress of research on quantum refrigerators. Cooling applications for microelectronic compounds could be considered.
World air-conditioning market: figures and technical trends
The global air conditioning market, which slowed down in 2018, was characterised by several trends: accelerated penetration of inverter technology, confirmation of R32 as alternative refrigerant, penetration of smart air conditioners.
The hidden cold chain behind Valentine’s Day roses
The average journey of a Valentine’s rose, from harvesting in South America to the point of sale in the US, is 10-12 days during which the role of refrigeration is essential.
The tax on HFCs officially adopted in France
French tax on HFCs, officially adopted on December 30, 2018, will enter into force in 2021. Companies can already get a 40% income tax discount if they use alternatives to HFCs.
Discovery of an 18th century ice-well in London
A huge subterranean ice house dating from the 1780s, recently uncovered in central London, has been designated as a scheduled monument by Historic England.
HFC phase-down: update on the Kigali Amendment and the EU F-gas Regulation
In the European Union, the F-gas Regulation’s objectives were broadly respected in 2017; at an international level, the Kigali Amendment came into force on January 1, 2019, with currently 67 ratifying states.
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.
A possible major step in the quest of room-temperature superconductivity
Two researcher teams have just reported experiments indicating that a hydride of lanthanum compressed to 1.7 to 1.85 million bar has a critical temperature of 250–260 K (-23 – -13°C).
IJR highlights: latest R&D results regarding household refrigerators
Vacuum insulation panels, mini-channel condensers and PCMs: 3 areas of research and development to reduce the energy consumption ofhousehold refrigerators.
The European heat pump market is still rising
According to the EHPA, heat pump sales in Europe increased by 13.1% in 2017 and this upward trend continued in 2018. Heat pumps installed in Europe contributed to 29.8 Mt of CO2 emission savings in 2017.
A semi-hermetic ammonia heat pump for heating and cooling an office complex
An innovative semi-hermetic ammonia heat pump for heating and cooling 40,000 m2 of apartments and business premises was recently installed in Eindhoven, the Netherlands.
The RAC sector in Australia: a key part of the economy
Based on the findings of the recent “Cold Hard Facts 3” report, the refrigeration and air-conditioning sector represents around 300,000 people employed in more than 20,000 businesses (+72% compared with 2012 figures).
A sustainable refrigeration solution for the urban delivery market
A US company was awarded for refrigeration units using rechargeable batteries or solar panels to allow for a complete off-engine operation when vehicles are at delivery stops.
