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Des pistes d'amélioration de l'isolation des toitures.
Ways to improve roof insulation.
IIR document
A high efficiency rooftop air conditioning system using multi-speed compressors.
Development of a novel axi-symmetric non-rotating roof-top ventilator.
Computer simulation of various heat recovery systems in a rooftop unit and analysis of their performance.
Model predictive control of a hybrid rooftop unit system integrated with phase change material for load shifting.
Rooftop refrigeration unit performance.
Multiple packaged rooftop unit coordination for peak demand reduction.
Evaluation of flammable volume in the case of a catastrophic leak of R-32 from a rooftop unit.
An agent-based control implementation for the optimal coordination of multiple rooftop units.
Impact de l'isolation des toitures et du concept des toits refroidissants sur le confort thermique et les économies d'énergie dans les bâtiments en Tunisie.
Impact of the roof insulation and cool roofs concept on thermal comfort and energy savings in Tunisia-based buildings.
Laboratory assessment of a demand response controller for rooftop units.
Lab and field evaluation of fault detection and diagnostics for advanced roof top units.
A prediction method for overall economic value of fault detection and diagnostic tools for rooftop and split systems.
Impact analysis of transitioning to heat pump rooftop units for the U.S. commercial building stock.
Norma de ensayo PREN 17625 “roof top units—testing and rating at standard rating conditions and part load conditions for calculation of seasonal performance”.
Refrigeration sector monitoring
25 results
The rooftop unit market within the EMEA zone
The rooftop unit market accounts in 2014 for 67,000 sold units i.e. 12% higher than the previous year.
Solar panels on car’s roof to power the air conditioning system
Audi recently signed a Memorandum of Understanding (MoU) with the US solar cells specialist Alta. They plan to work together to integrate photovoltaic cells into the panoramic glass roofs of Audi models.
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.
Air conditioning systems in passenger cars
Annual global fitment of air-conditioning units to light vehicles is projected to rise by more than a third from an estimated 57.1 million units in 2013 to 76.1 million by 2018.
Nearly 500,000 German cars use 1234yf
Despite some German opposition to the new car air conditioning refrigerant R1234yf, around 500,000 cars have already been registered in the country with this gas.
R1234yf could be used in 3 million cars by the end of the year
DuPont expects refrigerant HFO1234yf will be used in the air-conditioning systems of nearly 3-million vehicles worldwide by the end of this year.
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.
Impact of failures on the performance of refrigeration systems
An Australian study assesses the impact of failures of different refrigeration systems on their performance. Various air conditioning systems, refrigerated display cabinets and walk-in cold rooms were put to the...
The Canadian HVAC Market.
According to the Heating, Refrigeration and Air Conditioning Institute of Canada (HRAI), residential air conditioning shipments increased by 3% between the 2nd quarter 2012 and the 2nd quarter 2013.
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.
The Canadian HVAC Market. First quarter 2014
According to the Heating, Refrigeration and Air Conditioning Institute of Canada (information provided by ReportLinker), air-handler sales showed the largest increase in the first quarter of 2014.
Restoration plans approved for Grimsby ice factory
In the UK, local council has approved plans to turn the derelict Grimsby Ice Factory into a multipurpose venue, while preserving the historical compressor room.
The global central air conditioning market is expected to reach USD 65.2 billion by 2034
A recent study forecasts that the global central air conditioning market will increase by 56.7% by 2034.
2018: a positive year for the French air-conditioning market
Residential and light commercial split units, as well as VRF systems, registered a strong growth.
Evaporative and thermoelectric cooling improve the efficiency of solar panels
Among several cooling methods reviewed in an article in Energies, evaporative and thermoelectric cooling offer substantial improvements in energy efficiency and a positive environmental footprint while...
IIR news
3 results
New IIR Informatory Note on automotive air conditioning
The latest IIR Informatory Note presents recent technological trends in automotive air conditioning, in particular for electric cars, and outlines the challenges in terms of energy efficiency and CO2...
IIR member news: Air Liquide joins the fight against the Covid-19 epidemic
To deal with the Covid-19 epidemic in France, the Air Liquide group, member of the IIR, has decided to produce 10,000 respirators in 50 days.
Member news: Latest news from Air Liquide
Air Liquid inaugurates a low-carbon hydrogen production unit and promotes the development of helium refrigeration.
Encyclopedia of Refrigeration
1 result
Hydrocarbon refrigerants
Hydrocarbons such as R290 (propane), R600a (isobutane) or R1270 (propene/propylene) are low GWP non-toxic natural refrigerants with excellent thermodynamic properties. They offer an...
