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Nuevos avances en expansión electrónica.
New progress in electronic expansion valves.
Comparación del rendimiento térmico de una bomba de calor de expansión directa asistida por energía solar utilizando una válvula de expansión termostática y una válvula de expansión electrónica.
Comparison of the thermal performance of a solar-assisted direct expansion heat pump using a thermostatic expansion valve and an electronic expansion valve.
IIR document
Benefits investigation of electronic expansion valve in electric vehicle thermal system as compared to thermal expansion valve with shut-off valve.
Practical Design Procedure of a Rotary Vane Expander for a Conventional Refrigeration System.
Investigation of combination of a rotary vane expander and an expansion valve in a refrigeration system.
A white-box modelling methodology for electronic expansion valve by considering choked flow.
Modelling thermostatic expansion valves.
Experimental investigation on two-phase flow noise characteristics of R410A through electronic expansion valve of multi-split air conditioner.
Dynamic linear modeling of a refrigeration process with electronic expansion valve actuator.
Application of electronic expansion valves in domestic refrigerators.
Developing adiabatic two-phase flow in an 8-mm tube after an expansion valve.
Performance of radial piston type reciprocating expander for CO2 refrigeration cycle.
Energy recovery by means of a radial piston expander in a CO2 refrigeration system.
Evaluation of gray box thermostatic expansion valve mass flow models.
Electronic expansion valve mass flow rate prediction based on dimensionless correlation and ANN model.
Refrigeration sector monitoring
14 results
World's smallest electronic expansion valve
Danfoss recently presented a small electronic expansion valve, especially used for air conditioners with variable refrigerant flow.
CO2 heat pump with variable-displacement compressor/expander in the pipeline
This CO2 heat pump will use oil-free variable-load compressor and variable expander technology, currently tested at Purdue University’s Herrick Laboratories.
Faults and energy consumption of CO2 refrigeration systems in supermarkets
Food products refrigeration accounts for the largest share of energy consumption in supermarkets. In a recent study, the most common faults in supermarket CO2 refrigeration systems were investigated,...
MIRAI Intex, new corporate member of the IIR!
Presentation of MIRAI Intex and its flagship product: MIRAI COLD 15.
Record: heat pump less than 10 g of propane per kW
German researchers have developed a refrigeration circuit integrating a propane heat pump that achieves a heating power of 12.8 kW with only 124 g of refrigerant.
Two-phase ejectors: a high potential for energy savings
Two review papers recently published in the IJR highlight ejectors as a promising solution to dramatically improve the efficiency of vapour compression refrigeration systems and outline the challenges that...
Heat pump systems for HVAC in electric vehicles
Heat pump systems offer an energy efficient option for HVAC in electric vehicles. Recent studies present innovative technologies to further improve the heating and cooling performance of heat pump systems as...
An ejector refrigeration system optimised for sub-zero temperatures on fishing vessels
Large amounts of diesel fuel are used to power fishing vessels engines and on-board refrigeration systems. In a recent theoretical study, an energy-efficient sub-zero refrigeration system proposed based on a...
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.
Recent advances in hydrogen liquefaction and storage
Several review articles present a comprehensive overview of the liquid hydrogen supply chain. IIR members Linde and Air Liquide are contributing to address the global demand for...
The expansion of refrigeration applications of Thermal Energy Storage and PCMs
Based on a selection of papers from two recent IIR conferences, overview of thermal energy storage and PCM applications in the fields of refrigerated transport, display cabinets, fishing vessels, food processing...
France: the government recently published several documents on HFC regulations (in French)
On November 22, 2017, the French Ministry of Ecological and Solidarity-based Transition (Ministère de la Transition énergétique et solidaire) published two documents which summarise the different regulations on HFCs at different levels...
A blueprint HCFC and CFC phase-out regulation in France
French owners of refrigerating equipmement might have to cease all use of HCFCs before late 2017.
Automotive air conditioning: which refrigerant for electric cars?
Different alternatives exist today to replace R134a in automotive air conditioning systems. Update on possible solutions for electric cars.
IIR news
8 results
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...
Compressors Conference 2023 in London: Register today!
The 13th International Conference on Compressors and their Systems will be held this September in London.
Send in your abstracts to the 13th International Conference on Compressors and their Systems
Organised by City, University of London, this 3-day conference will provide a forum for developments in air, gas and refrigeration compressors, vacuum pumps and expanders. The call for abstracts ends December...
Member news: Latest news from Danfoss
Danfoss is improving its range of electric expansion valves and has started construction of an energy-efficient supermarket.
Registration is now open! 12th International Conference on Compressors and their Systems
Book your seat at the well-established 12th International Conference on Compressors and their Systems to take place on September 6-8, 2021.
Early Bird Registration now open for the Compressors Conference 2023 in London
Early Bird Registration ends August 6! This multi-day conference organised by the Centre for Compressors Technology at City, University of London, provides a forum for developments in air, gas and refrigeration...
IIR website: consult our courses!
The “Services and expertises” section of the IIR website includes a section on courses and training. The courses are among the most downloaded documents in 2022!
IIR member news: AFCE
The AFCE published an explanatory document of the F-Gas Regulation.
Encyclopedia of Refrigeration
2 results
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...
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...
