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Ecological alternative for an air-water heat pump.

• Author(s) : TÂRLEA G. M., VINCERIUC M., TARLEA A., et al.
• Publication date: 2017/12/06
• Languages : English
• Keywords : TEWI, Air-water, Heat pump, GWP, Energy efficiency, Greenhouse effect, Refrigerant
• Source: 48^th International HVAC&R Congress and Exhibition.
• Formats : PDF, PowerPoint

IIR document

Maldistribution in air–water heat pump evaporators. 2. Economic analysis of counteracting technologies.

• Author(s) : MADER G., PALM B., ELMEGAARD B.
• Publication date: 2015/02
• Languages : English
• Keywords : Technology, Economy, Air-water, Heat pump, Performance, Evaporator, Distribution
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 50
• Formats : PDF

IIR document

Performance evaluation of a large capacity air-water heat pump using propane as refrigerant.

• Author(s) : XU T., SAWALHA S., MAZZOTI W., et al.
• Publication date: 2016/08/21
• Languages : English
• Keywords : Air-water, R290, Heat pump, Performance, Modelling, Expérimentation
• Source: 12^th IIR Gustav Lorentzen Conference on Natural Refrigerants (GL2016). Proceedings. Édimbourg, United Kingdom, August 21st-24th 2016.
• Formats : PDF

IIR document

Flow characteristics of air-water two phase flow in a plate heat exchanger.

• Author(s) : MAHMUD M. S., KAWAZOE A., MUSTAGHFIRIN M. A., et al.
• Publication date: 2015/08/16
• Languages : English
• Keywords : Two-phase flow, Air-water, Modelling, Flow, Heat exchanger, Plate exchanger
• Source: Proceedings of the 24th IIR International Congress of Refrigeration: Yokohama, Japan, August 16-22, 2015.
• Formats : PDF

IIR document

Development of high performance air-conditioning system combined liquid desiccant and R718 centrifugal heat pump.

• Author(s) : YABASE H., YAMAGUCHI S., SAITO K., et al.
• Publication date: 2018/06/18
• Languages : English
• Keywords : Liquid desiccant, R718, Simulation, Heat pump, Humidifier, Expérimentation, Energy saving, Air conditioning, Water
• Source: 13^th IIR Gustav Lorentzen Conference on Natural Refrigerants (GL2018). Proceedings. Valencia, Spain, June 18-20th 2018.
• Formats : PDF

Experimental analysis of an air-water heat pump with micro-channel heat exchanger.

• Author(s) : BRIGNOLI R., CECCHINATO L., ZILIO C.
• Publication date: 2013/01
• Languages : English
• Keywords : Frost, Finned tube, Microchannel, Air-water, Heat pump, Expérimentation, Evaporator, Heat exchanger
• Source: Applied Thermal Engineering - vol. 50 - n. 1

IIR document

Maldistribution in air–water heat pump evaporators. 1. Effects on evaporator, heat pump and system level.

• Author(s) : MADER G., PALM B., ELMEGAARD B.
• Publication date: 2015/02
• Languages : English
• Keywords : Refrigerating system, Air-water, Heat pump, Performance, Modelling, Evaporator, Distribution
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 50
• Formats : PDF

IIR document

Dynamic model and experimental study of an air–water heat pump for residential use.

• Author(s) : KOURY R. N. N., FARIA R. N., NUNES R. O., et al.
• Publication date: 2013/05
• Languages : English
• Keywords : Household application, Hot water, Air-water, Heat pump, Modelling, Expérimentation, Domestic water
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 36 - n. 3
• Formats : PDF

Concepts to increase the seasonal coefficient of performance of an air/water heat pump: comparison of costs and benefits.

• Author(s) : MADER G., TIEDEMANN T., PALM B.
• Publication date: 2013/06/16
• Languages : English
• Keywords : Profitability, Air-water, Heat pump, Performance, Optimization, COP
• Source: Clima 2013. 11th REHVA World Congress and 8th International Conference on Indoor Air Quality, Ventilation and Energy Conservation in Buildings.
• Formats : PDF

IIR document

Characterization of lubricating oil effects on the performance of reciprocating compressors in air–water heat pumps.

• Author(s) : AFSHARI F., COMAKLI O., LESANI A., et al.
• Publication date: 2017/02
• Languages : English
• Keywords : Viscosity, Lubricant, Efficiency, Air-water, Heat pump, Performance, Oil, Reciprocating compressor
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 74
• Formats : PDF

IIR document

Internal reversible ammonia air-to-water heat pump/chiller.

• Author(s) : NIELSEN G., RASMUSSEN C.
• Publication date: 2015/04/16
• Languages : English
• Keywords : Design, Reversibility, Chiller, Ammonia, Air-water, Heat pump, Norway
• Source: 6^th Conference on Ammonia and CO2 Refrigeration Technology. Proceedings: Ohrid, North Macedonia, April 16-18, 2015.
• Formats : PDF

IIR document

A new ground-coupled heat pump system integrated with multi-mode air-water heat exchanger to eliminate thermal imbalance.

• Author(s) : YOU T., SHI W., WU W., et al.
• Publication date: 2015/08/16
• Languages : English
• Keywords : Air-water, Ground, Simulation, Heat pump, Performance, Heat exchanger
• Source: Proceedings of the 24th IIR International Congress of Refrigeration: Yokohama, Japan, August 16-22, 2015.
• Formats : PDF

IIR document

Heat to cold: Relevance and application of thermally driven cooling for the transformation of the energy system.

• Author(s) : FÜLDNER G., VOLMER R., DA SILVA MOREIRA A., SCHNABEL L.
• Publication date: 2023/08/21
• Languages : English
• Keywords : Sorption system, Chiller, CO2 emission, Absorption system, Adsorption system, R718, Water, Air conditioning, Sublimation
• Source: Proceedings of the 26^th IIR International Congress of Refrigeration: Paris , France, August 21-25, 2023.
• Formats : PDF

Reversible air-to-water heat pumps: annual performances in residential buildings.

• Author(s) : MADONNA F., BAZZOCCHI F.
• Publication date: 2013/06/16
• Languages : English
• Keywords : Reversibility, Air-water, Heat pump, Performance, Model, Residential building
• Source: Clima 2013. 11th REHVA World Congress and 8th International Conference on Indoor Air Quality, Ventilation and Energy Conservation in Buildings.
• Formats : PDF

IIR document

Lubrication of R290 rotary compressor used in low-temperature air-water heat pumps.

• Author(s) : SHI H., LEI B., WU J.
• Publication date: 2022/12
• Languages : English
• Keywords : Propane, Expérimentation, Thermodynamic property, R290, Rotary compressor, Air-water, Heat pump, Low temperature, Lubricant, Modelling, Oil, Ambient condition, Viscosity, Solubility
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 144
• Formats : PDF

Saving water thanks to air conditioning

Two Houston Universities are tapping into the city’s air-conditioning (AC) systems to conserve water in the midst of a historic drought.

• Publication date : 2011/12/13

Global air-to-water heat-pump market figures

In 2010, global air-to-water (ATW) heat-pump market demand increased by 24% since the previous year.

• Publication date : 2011/12/14
• Subjects: Figures, economy

Solar panels and a "water battery" to provide chilled water for air conditioners in an Australian university

The University of the Sunshine Coast, in Australia, has announced plans to install a giant "water battery" run by 5,800 solar panels to provide chilled water for air conditioning.

• Publication date : 2018/07/09

World air-to water heat pumps market

A few figures from the JARN.

• Publication date : 2017/12/11

How to reuse the condensate water from air conditioners?

Review of the different uses of the condensate water rejected by air conditioners.

• Publication date : 2020/09/04
• Subjects: Developing country

An air conditioning system using cold ocean water in Mauritius

The Indian Ocean island of Mauritius has obtained a grant to install an air conditioning system for the inhabitants of its capital, Port Louis, which will use cold ocean water.

• Publication date : 2014/02/23

World’s largest seawater air-conditioning system commissioned in Tahiti

Thanks to this system, the cold waters of the deep will cool the French Polynesia Hospital Center, saving at least 2.5 million euros of electricity per year. 

• Publication date : 2021/11/29
• Subjects: Technology

Air conditioner wastewater purified for human consumption

In Ecuador, Panasonic developed ACH20, a filtering system that purifies air conditioner wastewater and makes it fit for human consumption.

• Publication date : 2015/09/03

Strong growth of the global ATW heat pump market in 2017

According to JARN, global air-to-water heat pump demand reached 2.66 million units in 2017, 14.8% more than in 2016.

• Publication date : 2018/09/20
• Subjects: Figures, economy

European heat pump market repartition by energy source

Air continues to be the main energy source (more than 85%) used in the European heat pump markets. The aerothermal heat pump segment is dominated by air/air (with heating functionality) and air/water units used for heating and hot water production.

• Publication date : 2016/02/03
• Subjects: Figures, economy

The German market for ventilation, air conditioning, refrigeration and heat pump technology

In 2012, 6,800 water coolers, 110,000 split systems and 37,400 air-to-water heat pumps were sold in Germany.

• Publication date : 2015/04/15
• Subjects: Figures, economy

How about refreshing Parisians with the Seine river water... (in French)

Following discussions between the Snefcca - French national trade union for refrigeration, professional cooking facilities and air conditioning companies) and the Paris City Hall (France), the project to use the non-drinking water network in order...

• Publication date : 2016/10/10

Air-conditioning and heat-pump market figures in France; January-April 2014.

From January to April 2014, air-to-air heat pumps showed signs of very slight growth (2 to 4 %) whereas air-to-water heat pump sales grew by 23 %.

• Publication date : 2015/02/11
• Subjects: Figures, economy

India is in urgent need of affordable, energy-efficient air-conditioning

With energy demand for cooling in India expected to increase eightfold by 2038, a recent study by the Council on Energy, Environment and Water (CEEW) discusses the country's...

• Publication date : 2022/08/22
• Subjects: Figures, economy, Developing country

Los Angeles grants new discounts on energy-efficient air conditioners

The Los Angeles Department of Water and Power offers low-income customers rebates on energy-efficient air conditioners.

• Publication date : 2022/11/14
• Subjects: General information

News from IIR members: Johnson Controls

Johnson Controls and Princess Noura bint Abdulrahman University are beating the record books with York CYK chillers. To construct what is claimed to be the world's largest chiller plant using air-cooled radiators, Johnson Controls is providing 26...

• Publication date : 2011/02/07

Conference update: Sydney

The 9th IIR Gustav Lorentzen Conference Natural Working Fluids will be held in Sydney, Australia, on April 12-14, 2010. The call for papers and first announcement are now available:

• Publication date : 2009/05/18

News from IIR members: Danfoss

A pleasant indoor climate and no energy costs. This is what it feels like to live in the Zero+ house - the first home in Denmark that produces more power than is actually consumed. The house supplies its own heating and electricity and generates...

• Publication date : 2011/02/04

Conference update: Ohrid

The 3rd IIR event in a series, Ammonia Refrigeration Technology was held on May 7-9, 2009, in Ohrid, Macedonia. With 95 participants from 24 countries and 32 papers presented, the event was very successful. A key focus of this series of...

• Publication date : 2009/05/27

New IIR Informatory Note on evaporative cooling

The latest IIR Informatory Note highlights that evaporative cooling is an energy-efficient technology that has many applications in air conditioning but also in short-term food storage. 

• Publication date : 2023/05/27

Corporate members: news

- During the IIAR's 2008 Ammonia Refrigeration and Conference, the first fundraising event, a golf tournament, was held in order to launch Ammonia Refrigeration Foundation actions. The recently formed foundation will promote charitable,...

• Publication date : 2008/05/13

IIR member news: Johnson Controls YORK chiller optimised for R1233zd(E)

The YORK YZ magnetic bearing centrifugal chiller, produced by Johnson Controls, is said to be the first chiller fully optimized for ultimate performance with the low-global warming potential refrigerant R1233zd(E).

• Publication date : 2019/01/31

News from IIR members: Star Refrigeration

Star Refrigeration has installed a highly efficient Azanechiller at a Scottish meat processing facility. The central pumped glycol system has a total cooling capacity of 365kW and includes pumps with variable speed drives, six ceiling...

• Publication date : 2011/08/04

New EU funded project began on October 1st, 2021: “SophiA - Sustainable off-grid solutions for pharmacies and hospitals in Africa”

With a budget of 8 million euros over four years, SophiA will develop containerized solutions for hospitals using natural refrigerants, solar thermal and photovoltaics to enable more and more African people to...

• Publication date : 2021/10/21
• Subjects: Developing country, Environment, HFCs alternatives, Technology

IIR member news: Daikin

From 2012 to March 2015, over 3 million units of Daikin’s residential and commercial air conditioners using the “mildly flammable” R32 have been sold in 43 countries.

• Publication date : 2015/10/11

News from IIR members: Mayekawa

Watch 3 videos on Mayekawa’s Web site: one deals with Mayekawa’s vision and philosophy, another covers activities at its Moriya plant, and the third one presents Mayekawa’s viewpoints on HCFC phase-out.Jan Boone describes the emphasis placed...

• Publication date : 2012/04/24

News from IIR members: Nestlé

Nestlé is conducting unique research with the Institute for Snow and Avalanche Research in Switzerland (SLF) with a view to identifying the main mechanisms that alter the texture and structure of ice cream.

• Publication date : 2012/06/25

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...

• Publication date : 2023/10/24

New IIR Informatory Note on passive cooling

The IIR’s latest Informatory Note demonstrates that passive cooling technologies can contribute significantly to reducing energy demand for air conditioning. 

• Publication date : 2022/04/29
• Subjects: Technology

Member news: Latest news from Air Liquide

Air Liquid inaugurates a low-carbon hydrogen production unit and promotes the development of helium refrigeration. 

• Publication date : 2021/02/23

Cryogenics in the pharmaceutical industry: drug design and bioavailability improvement

Research activities in the pharmaceutical sector focus primarily on developing novel drug formulations which can elicit the desired response upon being administered to the patient...

• Last update : 2023/03/10
• Langues : French, English
• Themes : Freeze-drying in biology and medicine, Cryobiology, cryomedicine: general information

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...

• Last update : 2023/11/07
• Langues : French, English
• Themes : Freezing of foodstuffs

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...

• Last update : 2023/06/23
• Langues : French, English
• Themes : LNG and LPG

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...

• Last update : 2022/09/07
• Langues : French, English
• Themes : Evaporators, condensers and other heat exchangers

Ice cream manufacturing, environmental impact and market data

From a physico-chemical point of view, ice cream is a complex, frozen multiphase mixture. The manufacturing process includes several stages of freezing which are described in this...

• Last update : 2023/06/30
• Langues : French, English
• Themes : Ice creams

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...

• Last update : 2022/06/22
• Langues : French, English
• Themes : Hydrocarbons, Containment, refrigerant charge reduction

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...

• Last update : 2022/09/16
• Langues : French, English
• Themes : Caloric cooling (magnetocaloric, electrocaloric, elastocaloric and barocaloric cooling)

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...

• Last update : 2022/06/17
• Langues : English, French
• Themes : Nanofluids