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Specific heat of Teflon, Torlon 4203 and Torlon 4301 in the range of 30-400 mK.
IIR document
Numerical research on R32/R1234ze(E) air source heat pump under variable mass concentration.
Refrigerant mass distribution in an invertible air-to-water heat pump: effect of the airflow velocity.
Recommended by the IIR
Mechanistic chamber models: A review of geometry, mass flow and heat transfer sub-models.
Direct measurements of the magnetocaloric effect.
Mass fraction checks of an R1233zd(E) and R1234yf mixture in a high-temperature heat pump.
Condensation of NH3/H2O with mass concentrations of 80%-96%: Experimental study in a plate heat exchanger.
Mechanistic chamber models: A review of geometry, mass flow, valve, and heat transfer sub-models.
Experimental research on condensation heat transfer characteristics of low mass flow rate steam in a horizontal tube.
Mass flow characteristics and correlations of R454C flow through an electrical expansion valve in a heat pump split system.
Thermal hysteresis in La(Fe,Mn,Si)13-H alloys.
Recommended by the IIR / IIR document
CFD simulation and experimental validation of PCM thermal energy storage system for micro trigeneration system application.
An experimentally validated evaporative phase change heat transfer model for low mass flux applications using R134a in plate heat exchangers.
Flow visualization of two-phase R-245fa at low mass flux in a plate heat exchanger near the micro-macroscale transition.
Evaluation of correlations for mass flow rate of refrigerant through electronic expansion valve in air—water heat pump system using R32.
Refrigeration sector monitoring
18 results
Latest news on the regulation of flammable refrigerants
Because many alternative low-GWP refrigerants are flammable, the evolution of the regulation governing these refrigerants is an issue that gives rise to many debates and initiatives.
IIR Rankine Conference 2020: Which alternative working fluids for ORC systems?
HFOs (hydrofluoroolefins), HCFOs (hydrochlorofluoroolefins) and hydrocarbons were the main alternatives to HFC245fa presented during the IIR Rankine Conference 2020.
LNG cold energy recovery for salmon aquaculture
A team of Korean researchersis proposing a novel application of LNG cold energy recovery for aquaculture.
Earth-to-air heat exchanger for air conditioning in a Colombian tropical weather
In a recent theoretical study, a passive cooling system using an earth-to-air heat exchanger (EAHE) was modelled for the Colombian tropical weather.
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...
Cryogenics 2021 highlights: applications of liquid nitrogen
Cryopreservation of biological materials to favour biodiversity and cooling of superconducting cables to allow transmission of electrical energy with zero resistance are key applications of liquid...
Applications of artificial intelligence to refrigeration plants
A paper from the IIR TPTPR conference presents the energy performance and maintenance benefits of 19 refrigeration plants using artificial intelligence techniques.
Reducing the environmental impact of ultra-low temperature refrigeration systems
Ultra-low temperature (ULT) refrigeration systems often use very high-GWP HFCs. Yet, ULT systems are excluded from the scope of the regulations aimed at phasing-down HFCs. An IJR paper reviews the most promising...
Evaporative cooling without adding humidity
Scientists at the University of Harvard have designed a prototype evaporative cooling system called Cold-SNAP that effectively cools air at low cost for both dry and humid climates.
Waste heat recovery to eliminate the novel coronavirus in HVAC systems
A recent study proposes a technique for eliminating SARS-CoV-2 from cleanroom HVAC systems using the recovered heat of exhaust air. The modified system could be easily implemented in...
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.
Reclaiming waste heat from ice rinks’ refrigeration systems to save energy
Several studies and recent cases studies show that heat recovery from the refrigeration system is the biggest energy-saving measure in ice rinks.
Evaporative cooling: continuation of the Cold-Snap project at Harvard University
Tests show that Cold-Snap evaporative cooling technology would be effective in humid climates, while limiting water consumption.
Novel desiccant materials for more energy-efficient AC systems
Teams of researchers at MIT and at Texas A&M University have developed novel desiccant materials that could lead to more energy-efficient and economical room air conditioners and...
MIRAI Intex, new corporate member of the IIR!
Presentation of MIRAI Intex and its flagship product: MIRAI COLD 15.
IIR news
2 results
Latest news from B-Medical Systems, Epta and GEA, three IIR corporate members
B Medical Systems, a global leader in the vaccine cold chain, is expanding its production capacity due to the COVID-19 pandemic, Epta monitors R290 fridges in cashier-free store in Dubai and GEA provides a...
IJR Editorial: Solar energy, the energy of the future for refrigeration
Solar refrigeration should become a means of providing cleaner air conditioning and developing cold chains for food and health products where they are still deficient. We need to accompany this development while...
Encyclopedia of Refrigeration
3 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 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...
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...
