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The influence of various solar radiations on the efficiency of a photovoltaic solar module integrated with a passive cooling system.
Effect of solar radiation model on the predicted energy performance of buildings.
IIR document
Anticipating an efficient relative humidity in a room under direct solar radiation and equipped by radiant cooling panel system.
Assessment of the accuracy of solar irradiance models in mountain locations: the case of Bolzano, Italy.
Radiative cooling: principles, progress, and potentials
Recommended by the IIR
Full Daytime Sub-ambient Radiative Cooling in Commercial-like Paints with High Figure of Merit.
A review of nanoparticle material coatings in passive radiative cooling systems including skylights.
Evaluation of a tracking flat-plate solar collector in Brazil.
Yanqing solar field: Dynamic optical model and operational safety analysis.
The effect of the configuration of the absorber on the performance of flat plate thermal collector.
Building envelope cooling load study for an indoor snow field with ETFE-roof.
[In Chinese. / En chinois.]
Diseño y caracterización de un captador solar de aire construido con materiales reutilizados. [in Spanish]
Design and characterization of an air solar collector made with recycled materials.
Numerical simulation of heat transfer process in solar enhanced natural draft dry cooling tower with radiation model.
A new control framework for the visual environment based on low-cost HDR luminance acquisition.
Ušteda energije za grejanje i hladenje zgrada kombinovanom instalacijom toplotne pumpe i sunceve energije (KITPS).
Energy saving for buildings heating and cooling using combined solar-heat pump installations (CSHPI).
Refrigeration sector monitoring
24 results
Residential heat pump optimised by solar radiation forecasts
A new heat pump system heats water mainly during the day based on solar radiation data, offering significant energy savings.
Radiative cooling: protecting ice from melting under sunlight
Researchers have developed a biodegradable film made of cellulose acetate which, thanks to its radiative cooling properties, effectively protects ice subjected to solar radiation from melting, with possible...
Radiative cooling: smart materials to switch from heating to cooling
Researchers have developed a radiative thermal management device, composed of several layers of reflective/absorbent materials, capable of switching between heating and cooling...
How to reuse the condensate water from air conditioners?
Review of the different uses of the condensate water rejected by air conditioners.
Experimentation of a film rejecting 70% of solar heat
A team of researchers explored the ability of a phase-change material film set on windows to reject incoming solar heat.
Viability of an absorption solar cooling system in an isolated school in Mexico
A recent IJR article presents a simulation of the operating strategies and the results of the first experiments following the installation of a solar thermal absorption air conditioning system, installed in an...
Solar ejector refrigeration systems: benefits and latest developments
Two IJR articles present the latest advancements in this technology and in particular the advantages of variable geometry ejectors and low-GWP refrigerants in terms of performance.
Will the facades of the future be able to supply heat pumps?
A German organisation is developing a material that could use solar energy to power a heat pump.
Passive radiative cooling: promising results for a polymer film
A new material using radiative cooling was tested by a team of researcher at Boulder, Colorado. The results show that is could become a viable solution for supplemental cooling for buildings.
Great potential for solar district cooling in Saudi Arabia
A recent modelling compares the performances of a two-stage and a single-stage absorption chiller in a solar district cooling system in Riyadh, Saudi Arabia.
Photovoltaic thermal system combined with adsorption cooling achieves 75% efficiency
Researchers from IBM Zurich research laboratory combined photovoltaic (PV) and solar thermal techniques in a high-concentration PV thermal (HCPVT) system to achieve efficient electrical cooling output without the need for extra cells.
China: record temperatures in Beijing increase cooling demand
In June 2023, Beijing recorded its hottest temperatures in 60 years, affecting electricity and cooling demand.
Europe: renewable cooling could provide close to 100% of cooling demand
A recent study performed by the German Öko-Institut e.V. on behalf of NL Agency of the Netherlands and funded by the Dutch government, claims that at least 50% of the cooling demand in Europe could be covered by renewable energy applications by 2050.
Cool like a butterfly wing
New study demonstrates that butterfly wings contain a network of living cells with specific thermodynamic and thermoregulatory properties. Butterfly wings cool down as a result of low solar absorption combined with efficient radiative heat...
Radiative cooling coatings that can adapt to the seasons
A novel material can be used as a coating on building’s rooftops or windows to provide radiative cooling in the summer without overcooling in the colder months.
IIR news
2 results
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...
Past events: The IIR around the world, August and September 2024
A look back at the IIR’s latest events during conferences (Gustav Lorentzen, Thermag, Compressors) and during sponsored vents (CHPC).
Encyclopedia of Refrigeration
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...
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...
