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Nuevos avances en expansión electrónica.

New progress in electronic expansion valves.

• Author(s) : SANZ F., OTTEN M., SAAR J., et al.
• Publication date: 2015/07
• Languages : Spanish
• Keywords : Thermostatic expansion valve, Generality, Electronic expansion valve, Development
• Source: Frío Calor Aire acondicionado - vol. 43 - n. 482
• Formats : PDF

Comparación del rendimiento térmico de una bomba de calor de expansión directa asistida por energía solar utilizando una válvula de expansión termostática y una válvula de expansión electrónica.

Comparison of the thermal performance of a solar-assisted direct expansion heat pump using a thermostatic expansion valve and an electronic expansion valve. 

• Author(s) : QUITIAQUEZ W., SIMBANA I., ISAZA ROLDAN C. A., NIETO-LONDOÑO C., QUITIAQUEZ P., TOPANTA RAMOS F.
• Publication date: 2020/11/11
• Languages : Spanish
• Keywords : Heat pump, Thermostatic expansion valve, R600a, Isobutane, Compression system, Testing, COP, Expérimentation, Electronic expansion valve
• Source: X Congreso Ibérico y VIII Congreso Iberoamericano de Ciencias y Técnicas del Frío, CYTEF 2020.
• Formats : PDF

IIR document

Modelling thermostatic expansion valves.

• Author(s) : EAMES I. W., MILAZZO A., MAIDMENT G. G.
• Publication date: 2014/02
• Languages : English
• Keywords : Thermostatic expansion valve, Software, Refrigerating system, Commercial application, Mechanical vapour compression, Simulation, Modelling
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 38
• Formats : PDF

IIR document

A control-oriented hybrid model for a direct expansion air conditioning system.

• Author(s) : WANG X., XU X.
• Publication date: 2015/08/16
• Languages : English
• Keywords : Operation, Direct expansion, Artificial neural network, Control (automatic), Performance, Modelling, Air conditioning
• Source: Proceedings of the 24th IIR International Congress of Refrigeration: Yokohama, Japan, August 16-22, 2015.
• Formats : PDF

A white-box modelling methodology for electronic expansion valve by considering choked flow.

• Author(s) : JIN Z., PARK N., LEE B. H., HWANG Y., CHIN S. W., OH S.
• Publication date: 2022
• Languages : English
• Keywords : Modelling, Expansion valve, Machine learning, Geometry, Thermodynamic property, Flow, Electronic expansion valve
• Source: 2022 Purdue Conferences. 19^th International Refrigeration and Air-Conditioning Conference at Purdue.
• Formats : PDF

IIR document

The influences of the operating characteristics of an Electronic Expansion Valve (EEV) on the operational stability of an EEV controlled direct expansion air conditioning system.

• Author(s) : XIA Y., DENG S.
• Publication date: 2016/09
• Languages : English
• Keywords : Electronic expansion valve, Direct expansion, Stability, Parameter, Expérimentation, Air conditioning
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 69
• Formats : PDF

Frequency distribution control for flow-induced noise mitigation near expansion device.

• Author(s) : ZHANG Y., ELBEL S.
• Publication date: 2022
• Languages : English
• Keywords : Expansion, Noise, Flow, Acoustics, Expérimentation
• Source: 2022 Purdue Conferences. 19^th International Refrigeration and Air-Conditioning Conference at Purdue.
• Formats : PDF

IIR document

Benefits investigation of electronic expansion valve in electric vehicle thermal system as compared to thermal expansion valve with shut-off valve.

• Author(s) : ZHANG R., STANKE E. J., ZHANG G., et al.
• Publication date: 2019/04
• Languages : English
• Keywords : Thermostatic expansion valve, Electronic expansion valve, Electric vehicle, Battery, Simulation, Expérimentation, Evaporator, Energy saving, Mobile air conditioning
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 100
• Formats : PDF

IIR document

An experimental comparison between performances of modular silicon expansion valve and thermal expansion valve in mobile ac system.

• Author(s) : ZHANG Z., ZHU J., LI W., et al.
• Publication date: 2015/08/16
• Languages : English
• Keywords : Car, Superheat, Silicon, Performance, Expérimentation, Evaporator, Expansion valve, Air conditioning, Thermal expansion
• Source: Proceedings of the 24th IIR International Congress of Refrigeration: Yokohama, Japan, August 16-22, 2015.
• Formats : PDF

Refrigerant flow through electronic expansion valve: experiment and neural network modeling.

• Author(s) : CAO X., LI Z. Y., SHAO L. L., et al.
• Publication date: 2016/01/05
• Languages : English
• Keywords : Electronic expansion valve, Artificial neural network, Modelling, Expérimentation, Flow, Refrigerant
• Source: Applied Thermal Engineering - vol. 92

Theoretical and experimental analysis of expansion devices for meso-scale cooling systems.

• Author(s) : DE LARA J. F. P., MELO C., BOENG J.
• Publication date: 2016/07/11
• Languages : English
• Keywords : R134a, Capillary tube, Modelling, Mass, Expansion, Flow rate
• Source: 2016 Purdue Conferences. 16th International Refrigeration and Air-Conditioning Conference at Purdue.
• Formats : PDF

IIR document

Empirical correlation development of R245fa flow in electronic expansion valves.

• Author(s) : CHEN T., BAE J. K., KWON O. K.
• Publication date: 2018/04
• Languages : English
• Keywords : R245fa, Electronic expansion valve, Correlation, Heat pump, High temperature, Expérimentation, Flow
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 88
• Formats : PDF

Optimisation of expansion valve control in small refrigeration appliances under cyclic operation.

• Author(s) : BEEK M. van, JONG H. D.
• Publication date: 2016/07/11
• Languages : English
• Keywords : Commercial application, Control (automatic), Cooling capacity, Optimization, Energy efficiency, Expansion valve
• Source: 2016 Purdue Conferences. 16th International Refrigeration and Air-Conditioning Conference at Purdue.
• Formats : PDF

A modeling study on the operational stability of a variable speed direct expansion air conditioning system.

• Author(s) : XIA Y., DENG S.
• Publication date: 2016/07/11
• Languages : English
• Keywords : Operation, Sensor, Electronic expansion valve, Variable speed, Direct expansion, Stability, Air conditioning
• Source: 2016 Purdue Conferences. 16th International Refrigeration and Air-Conditioning Conference at Purdue.
• Formats : PDF

IIR document

Mass flow characteristics and empirical modeling of R744 flow through electronic expansion device.

• Author(s) : LIU C., ZHANG J., GUI Y., et al.
• Publication date: 2018/02
• Languages : English
• Keywords : Electronic expansion valve, Temperature, R744, Model, Pressure, Flow, CO2
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 86
• Formats : PDF

China: expanding electronic expansion valve market

Electronic expansion valves are mainly used in inverter air conditioners to automatically adjust refrigerant flow to achieve better energy-saving performance. This technology is one of the 30 key energy-saving technologies promoted by the Chinese...

• Publication date : 2011/06/08

Markets: Global AC expansion

AC shipments hid a record high of 70.6 million units in 2006. US growth was particularly marked: 9 million room air conditioners (RACs) were shipped, this being 11% more than in 2005. Japan shipped 7.5 million RACs (0.5% increase compared with...

• Publication date : 2007/11/20

DuPont develops a new foam expansion agent

FEA-1100, DuPont’s latest foam expansion agent, has an excellent environmental profile. It is characterized by zero ozone depletion potential and low global warming potential (9.4). DuPont indicates that FEA-1100 has a short atmospheric lifetime:...

• Publication date : 2011/06/08

High expansion potential for district cooling in Europe and in the Middle East

According to RESCUE, the small market share of district cooling (DC) in Europe (below 2%) represents the equivalent of less then 3 TWh of cooling energy, which clearly makes it a market with high expansion potential. With temperatures ranging...

• Publication date : 2013/04/19
• Subjects: Figures, economy

Expansion in Purdue University will house a “smart-buildings” lab

Purdue University is expanding the Ray W. Herrick Laboratories. The expanded labs will house the Center for High Performance Buildings, where research is focused on new equipment and operational technologies to develop an understanding of the...

• Publication date : 2011/08/17

A low charge direct expansion evaporator system configured to use less ammonia

A US-based meat processor operates a cold storage facility that uses just 1 kg approx ammonia per kW.

• Publication date : 2018/05/17

World's smallest electronic expansion valve

Danfoss recently presented a small electronic expansion valve, especially used for air conditioners with variable refrigerant flow.

• Publication date : 2020/07/01

The expansion of the data centre cooling market

As the data centre cooling market experiences rapid expansion, innovations in liquid cooling could have a significant impact on the industry.

• Publication date : 2018/08/08

Foam blowing agents: use of R1233zd(E) is expanding

Honeywell announced that TCL, one of China’s largest appliance manufacturers, selected HFO1233zd(E) as foam blowing agent in its domestic refrigerators.

• Publication date : 2017/12/18

Expansion of cold chain facilities in hot countries

Effective cold-chain logistics are essential for the economic growth of hot countries. In Africa, Asia, as well as the Middle East, various stakeholders are engaged in setting up cold storage refrigeration warehouses and temperature-controlled...

• Publication date : 2020/02/27
• Subjects: Developing country

History of the expansion of air conditioning in the United States

An article published in the Guardian goes through the history of air conditioning development in the United States.

• Publication date : 2019/09/30
• Subjects: General information

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...

• Publication date : 2021/11/29

Indian LNG demand shows rapid growth due to high demand

The Indian Ministry of Petroleum and Natural Gas claims that LNG accounted for 41% of India’s total gas consumption in 2012 - 2013 and will account50% in 2013 – 2014: a 25% rise.

• Publication date : 2014/05/21

World HVAC equipment demand on the rise

The Asia/Pacific region was the largest market for HVAC equipment in 2013, with 54 % of the global total.

• Publication date : 2014/05/27
• Subjects: Figures, economy

North American geothermal heating and cooling markets

Geothermal heating and cooling technologies may hold the key for an increase in overall energy efficiency in non-residential buildings.

• Publication date : 2013/10/02

News from IIR members: Air Liquide: fast expansion in Turkey

Turkey has a dynamic economy with a growth rate of 9% in 2010. Its industries are developing and diversifying, and the petrochemical sector is expanding.Air Liquide recently signed a long-term contract with the Turkish petrochemical Group...

• Publication date : 2012/02/28

Member news : Danfoss launches thermostatic expansion valve for CO2

Danfoss has recently launched a thermostatic expansion valve for CO2, based on its TE2 valve. It is suitable for small to medium size remote refrigeration systems such as cold rooms and display...

• Publication date : 2022/10/27

Member news: Latest news from Danfoss

Danfoss is improving its range of electric expansion valves and has started construction of an energy-efficient supermarket. 

• Publication date : 2022/04/29

EPTA S.P.A. continues to grow in Germany with the acquisition of heifo refrigeration activities

The European expansion of one of the leading companies in commercial refrigeration continues with an increasingly capillary service for its customers in the north of Germany.

• Publication date : 2023/10/02
• Subjects: Technology

Ozone to Cool Zone: IIR Workshops at COP 28

Join the five IIR workshops at COP28 set to highlight innovative refrigeration solutions for a sustainable future.

• Publication date : 2023/11/24
• Subjects: Environment

New IIR Informatory Note on Liquefied Natural Gas

The latest IIR Informatory Note stresses that LNG is expected to play a major role in global energy strategies as it has many advantages and helps mitigate global warming when used instead of coal and...

• Publication date : 2023/06/28

Climespace

Who cools the Louvre, the French parliament, the Paris Opera House, the Bank of France, Chanel, Dior, Galeries Lafayette, several 5-star hotels and many other buildings? The answer is Climespace. With 475 customers, 5 million m² cooled and...

• Publication date : 2011/02/04

News from IIR members: Linde

Linde is older than the IIR! 125 Years of Linde, a fine document tracing the origins and subsequent expansion of the company, includes fascinating information on Carl von Linde and his first machines, brewery technology, air liquefaction, oxygen...

• Publication date : 2008/08/12

New IIR publications: Saving Energy in Refrigeration, Air-Conditioning and Heat-Pump Technology

The French version of the IIR guide Saving Energy in Refrigeration, Air-Conditioning and Heat-Pump Technology will be published in November 2009; the goal of this guide is to provide practical ways of minimizing the energy consumption of...

• Publication date : 2009/12/09

International events: Zurich

The IIR-co-sponsored 9th IEA Heat Pump Conference, held in Zurich, Switzerland, on May 20-22, 2008 was a great success. It brought together 450 people from 36 countries. Three Peter Ritter von Rittinger awards were presented to Prof. Eric Granryd,...

• Publication date : 2008/08/12

International events: Moscow

The 6th Cryogen-Expo took place in Moscow on November 13-16, 2007. Fifty-nine exhibitors from 10 countries took part, and a conference on Cryogenic Technologies and Equipment and Prospects of Development was staged on November 14-15. The IIR ran a...

• Publication date : 2008/02/12

New publications: Energy Savings

The IIR has published a new version of its guide Saving Energy in Refrigeration, Air-Conditioning and Heat-Pump Technology; the goal of this completely revised version prepared by Forbes Pearson and several IIR experts and launched during the Bali...

• Publication date : 2008/02/12

Editorial by Didier Coulomb

Energy is one of the main strategic challenges of this century, both in terms of the impact of energy consumption on the environment (greenhouse effect) and above all in terms of the risk of shortages with respect to our society's needs (limited...

• Publication date : 2006/11/14

IIR Working Group on the Cold Chain in Warm Countries appoints a new chairperson

Newly appointed chairperson, Halima Thraya, will oversee and coordinate the various efforts and projects carried out by the Working Group.

• Publication date : 2015/06/03

Member news: Mirai Intex releases new high capacity ultra-low temperature refrigeration system

Mirai Intex, corporate member of the IIR, has released a new ultra-low temperature (ULT) system based on air-cycle technology, offering high cooling capacity.

• Publication date : 2021/03/09
• Subjects: HFCs alternatives, Technology

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 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)