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Heat transfer coefficient distribution—a review of calculation methods.
Investigation of the dynamic heat transfer coefficient of R134a in a horizontal pipe.
Novel visualization method to quantify local air-side heat transfer coefficient.
Experimental evaluation of local air-side heat transfer coefficient on single fins.
IIR document
Research on test method of heat transfer coefficient for refrigerator gasket.
Development of a new optical method to quantify local air-side heat transfer coefficient.
Method for determining air side convective heat transfer coefficient using infrared thermography.
Effects of PVE oil on the pool nucleate boiling heat transfer coefficient of R410A.
Calculation and experimental verification of heat transfer coefficient for low pressure methanol evaporator.
Experimental investigation of the heat transfer coefficient during convective boiling of R134a in tubes with twisted tape insert.
Improved prediction of oscillatory heat transfer coefficient for a thermoacoustic heat exchanger using modified adaptive neuro-fuzzy inference system.
The local heat transfer coefficient at the boiling of the isobutane mineral oil solution flow in the pipe.
[In Ukrainian. / En ukrainien.]
Determination of film cooling effectiveness and heat transfer coefficient simultaneously on a flat plate.
Heat transfer coefficient of two-phase flow boiling with low vapor quality.
Measurement of pool nucleate boiling heat transfer coefficient of R1234yf at saturation.
Refrigeration sector monitoring
8 results
ICR 2019: an overview of current refrigeration research (part I)
Presentation of the main scientific and technical topics covered in the papers of the 25th IIR International Congress of Refrigeration and summary of some of the 14 keynotes.
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.
Reducing the economic costs of a direct-use geothermal heating system
Italian researchers have modelled a polymer heat exchanger to reduce the cost of a direct-use geothermal heating system for a single building in the active volcano district of the...
A novel method for frost detection
Frost growth on the evaporator coils of a refrigeration plant can dramatically reduce its efficiency. A novel indirect detection method that would avoid frost built-up has been developed.
Latest research on ammonia-based absorption refrigeration systems
A recent article has reviewed literature on absorption chillers that use ammonia as a refrigerant, along with water (H2O), lithium nitrate (LiNO3), and lithium nitrate + water...
Frost detection and defrosting methods: latest advances
A recent Purdue conference paper presents the state of the art regarding methods for retarding the onset of frosting, frost detection techniques and defrosting strategies, including those based on artificial...
Road to COP28. Extending the temperature range and application for heat pumps
To promote decarbonation, “high temperature heat pumps should be designed using waste heat and renewables as a driving energy, and environmentally friendly working fluids”, according...
Novel energy-saving cryogenic equipment for walnut kernel peeling
In a recent study, a prototype cryogenic equipment was designed to peel walnut kernel more efficiently than by immersion in liquid nitrogen.
IIR news
1 result
Heat pumps, the central theme of the recent IIR Congress
An overview of the research carried out in the field of heat pumps, with the aim of achieving greater flexibility and increased energy efficiency, in particular through to the use of thermal energy...
Encyclopedia of Refrigeration
3 results
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...
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...
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...
