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IIR document
Benefits investigation of electronic expansion valve in electric vehicle thermal system as compared to thermal expansion valve with shut-off valve.
Experimental study of electronic expansion valve opening on the performance of electric vehicle heat pump system at different compressor speeds.
Electronic expansion valve mass flow rate prediction based on dimensionless correlation and ANN model.
Experimental study on the CO2 flow characteristics through electronic expansion valves in heat pump.
Mass flow characteristics and correlations of R454C flow through an electrical expansion valve in a heat pump split system.
Sleeping evaporator and refrigerant maldistribution: An experimental investigation in an automotive multi-evaporator air-conditioning and battery cooling system.
A novel refrigeration system.
Control analysis of VRF air-conditioners for the evaluation of demand response.
Performance investigation of CO2 automotive air-conditioning system with ejector at 45 °C ambient temperature.
Comprehensive study on EEVs regulation characteristics of vapor-injection CO2 heat pump for electric vehicles.
Study on the influence of the superheat of the electronic expansion valve on the performance of the air conditioning system of the heat pump type pure electric bus under frosting condition.
Performance testing of a unitary split-system heat pump with an energy recovery expansion device.
Numerical investigation on effects of sub-cooling methods on performance of multi-split variable refrigeration flow systems with bypass and vapor injection cycles.
Experimental and numerical study of a mobile reversible air conditioning-heat pump system.
Reduction in energy consumption of a walk-in freezer by using a flash defrost system.
Refrigeration sector monitoring
9 results
World's smallest electronic expansion valve
Danfoss recently presented a small electronic expansion valve, especially used for air conditioners with variable refrigerant flow.
Transcritical CO2 system with ejector saves energy
Since July 2013, the first installed and operating transcritical CO2 system with ejector has registered 15% energy savings by reducing internal losses.
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...
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,...
Reduce refrigerant leaks in supermarkets
Refrigerant leaks are a recurring problem, particularly in the commercial refrigeration sector. An American initiative aims to identify the main causes of leaks and to propose solutions to reduce...
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.
Summary of two papers of the 9th International Conference on Compressors and Coolants (ICCC2017)
The IIR 9th International Conference on Compressors and Coolants (ICCC2017), which took place in Bratislava, Slovakia, in September 2017, addressed advances in compressors but also refrigerating technologies and alternative refrigerants, as...
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...
Global energy demand is predicted to grow by more than one-third over the period to 2035
Global energy demand will grow by more than one-third over the period to 2035 according to IEA with China, India and the Middle East accounting for 60% of the increase.
IIR news
1 result
Member news: Latest news from Danfoss
Danfoss is improving its range of electric expansion valves and has started construction of an energy-efficient supermarket.
Encyclopedia of Refrigeration
3 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...
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...
